preparation and its catalytic applications

OP – 1 ENCAPSULATION OF ZINC-TETRAPHENYL PORPHYRIN ON AMINO FUNCTIONALISED SBA-15: PREPARATION AND ITS CATALYTIC APPLICATIONS Anjali K1, Nishana L.K, Christopher J2 and Sakthivel A1* 1

Department of Chemistry, Inorganic Materials & Catalysis Laboratory, 2

Central University of Kerala, Kasaragod, Kerala-671316, India Indian Oil Corporation Limited, R&D Division, Faridabad-121220

Amine functionalized mesoporous SBA-15 material was prepared by post-synthesis method and subsequently the zinc tetraphenylporphyrin (Zn TPP) macro-molecules was grafted into the functionalized material. The catalyst was prepared by multistep method. First SBA-15 and SBA-15AM were prepared as per the procedure described in the literature1,2,3. The synthesis of tetraphenyl porphyrin and metal incorporated porphyrin system were conducted by standard schlenk techniques prescribed in the literature.4,5 Grafting of Zn-TPP macromolecule on SBA-15-AM is achieved by the following method6,7. Zn-TPP is dissolved in particular solvent and was added to the round bottom flask containing pre-activated SBA-15-AM, which is subsequently allowed to reflux for 24 hours under inert atmosphere. Then the Zn-TPP encapsulated functional materials was collected by separating the solvent and the product was vacuum dried and denoted as Zn-TPP-SBA-15-AM. The resultant SBA-15-AM and Zn-TPP-SBA-15-AM materials were thoroughly characterized by various analytical and spectroscopic techniques such as, FT-IR, DRUV-Vis, TGA, powder XRD, 1H NMR, Mass, CHNS studies. The presence of organic linker group was confirmed by IR and NMR spectral studies. The coordination of Zn to TPP was evident from the NMR and UV-Visible spectral studies. Qualitative information was obtained from the thermal analysis. The resultant homogeneous (ZnTPP) and heterogenized homogeneous catalysts were utilized for for nitro aldol condensation of benzaldehyde under various reaction conditions. The preliminary studies revealed that Zn TPP grafted organo-functionalised SBA-15 shows promising catalytic activity for the nitro aldol condensation. The activity is limited to two cycles due to the leaching of considerable amount of Zn ions during the separation procedure. Further studies are in progress on stabilization of Zn-TPP under the reaction conditions.

International Conference on”Modern Trends in Chemical Sciences Including Green Chemistry – MTCSGC-2018”

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OP – 2 MAGNETIC SUSCEPTIBILITY TENSOR OBTAINABLE FROM CLASSICAL DIPOLE SECONDARY FIELDS AND THE QM AB INITIO VALUES OF NMR SHIELDING TENSORS S. Aravamudhan North eastern hill university, shillong 793022 meghalaya sarava mud han@hotma il.com

“Neighbour group susceptibility anisotropy effect” is the procedure known in experimental High Resolution (HR) NMR spectroscopy in liquids. This entails using a classical magnetic dipole model and the corresponding equation for the values of induced secondary field due to the magnetic susceptibility anisotropy of adjacent functional groups the electron circulations of which are not located at the specified proton centre. Similar approach is possible when it is a matter of full shielding tensor of protons determined by HR PMR in single crystalline solid specimen. It is possible to calculate the Proton Shielding Tensors by ab initio Quantum Mechanical formalisms. Then, with these Shielding Tensor Values obtained from QM methods, it should be possible to apply the classical dipole model equations to infer the corresponding susceptibility tensors. A perspective of this type was indicated in this author’s presentation (1) on an earlier occasion. With the help of the theoretical methods as available in Quantum Chemical software, the full shielding tensor is calculated for protons of hydrogen molecule placed at various distances in the neighbourhood of Benzene, it has been possible to infer the ring current effect at the hydrogen molecule. A quantitative estimate would be presented. For example an overall average value of 58.34 ◦ 10-6 cm3 mole-1 can be quoted for the isotropic magnetic susceptibility of benzene, from the results of the calculations to be presented. In actualities the symmetry of molecules play a role in applying the classical equations and in a hypothetical combination of benzene molecule and hydrogen molecule, deciding about which is the symmetry axis relevant for what aspect is an exercise that would benefit beginners and gain chemical intuitions by resolving such complications that arise by combining two molecules that have independent characteristic symmetry, but in the hypothetical combination system how does one reconcile for a symmetry of this combination as a whole. There have been efforts to obtain theoretical values and experimental values for the isotropic susceptibilities, and the effort is to obtain the full susceptibility tensor values in Principal Axis System. Even while presenting the detailed steps in these Quantum Mechanical NMR Shielding combined with classical dipole field equations for the determination of full susceptibility tensor evaluations, no review of the previous efforts would be included except possibly citing typical references. International Conference on”Modern Trends in Chemical Sciences Including Green Chemistry – MTCSGC-2018”

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OP – 3 ORGANIC NLO MATERIALS SP. Meenakshisundaram*, C. Balakrishnan, S. Sivaraman, M. Manonmani, R. Markkandan and RM. Sockalingam Department of Chemistry, Annamalai University, Annamalainagar-608 002, Tamilnadu, India. [email protected]

Nonlinear optics (NLO) is the study of interaction of intense electromagnetic fields with materials to produce modified fields that are different from input field in phase, frequency and amplitude. NLO materials manipulate the fundamental properties of laser light. It is a fascinating field and it plays a major role in photonics and optoelectronics. Growing organic crystals is a specific and challenging problem. Sustaining nonlinearity at the macro level is a challenging task. Synthesis, growth, structure and NLO characterization of some grown crystals will be discussed. Theoretical calculations are performed using DFT calculations and dipole moment, first-order hyperpolarizability are estimated. Hirshfeld surface analysis is used to quantify the intra- and intermolecular interactions. Effect of substituents on hyperpolarizability reveals many interesting features. Attempts, failures and rationalization of NLO response will be discussed.


23

OP – 4 NEW ROUTE FOR THE SYNTHESIS OF DIARYLSELENIDE – A CHALCOGENIDE OF VERSATILE CHEMICAL AND BIOLOGICAL APPLICATIONS Radha V Jayaram, Swetha Narasimhan, Anand Burange and Amber J Sahani Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai-400 019 [email protected] , [email protected]

Diarylselenides are extensively used as antioxidants, enzyme inhibitors, antitumor and antiinfective agents and immunomodulators. In addition, the reactions of oragno selenides produce catalytic materials for regio and chemo selective reactions. In the present work, coupling of diphenyldiselenides (dpds) and phenyltriethoxysilane was carried out to produce diphenylselenide derivatives. The diaryl selenides were synthesized using copper (I) complexes as homogenous catalysts. Reaction conditions were optimised and Kinetic parameters such as rate constant, and activation energy were determined. The value of the activation energy determined reveals that the reaction is kinetically controlled under the condition studied.


24

OP – 5 ANTI-INFLAMMATORY AND ANTI-MICROBIAL ACTIVITY STUDIES OF SOME NOVEL IMIDAZOLE DERIVATIVES Nefisath Pa, Prashantha Naikb, Annapoornab, Shashiprabhaa, Jagadeesh Prasad Dc* and Vishwanatha Pa a

PG Department of Chemistry, Sri Dharmasthala Manjunatheshwara College (Autonomous), Ujire,Karnataka – 574240 b Department of Bioscience, Mangalore University, Mangalagangotri, Karnataka-574199 c

Department of Chemistry, Mangalore University, Mangalagangotri, Karnataka-5741993b [email protected]

Fenobam is an anxiolytic drug1-3 and it has been re-investigated for many applications such as antidepressant, analgesic and anti-addictive effects4,5. Prompted by the thesis6, a series of benzylidene derivatives of fenobam were prepared. The present work summarizes the different derivatives of 1(Halophenyl)-3-(3-methyl-5-oxo-4H-imidazol-2-yl)urea

&

thiourea

with

their

chemistry,

characterization and biological evaluation. The compounds, 1-(3-halophenyl)-3-[(2E)-1-methyl-4oxoimidazolidin-2-ylidene]urea

and

1-(3-halophenyl)-3-[(2E)-1-methyl-4-oxoimidazolidin-2-

ylidene] thiourea were obtained by the condensation of corresponding phenyl isocyanates and isothiocyanates with creatinine. Further, title compounds were synthesized by treating above compounds with various substituted aldehydes. The compounds obtained were characterized by 1HNMR, Mass and IR spectral studies. All synthesized compounds were screened for their antiinflammatory and antimicrobial activities. O O NH X

O S

NH N

N

NH

R

NH N

N

R

X

Key words: Fenobam, anxiolytic, antidepressant, analgesic, antifungal and anti-microbial


25

OP – 6 WHOLE CELLS MEDIATED BIOCATALYTIC REDUCTION OF ETHYL-2SUBSTITUTED β-KETO ESTERS: INHIBITORS IMPROVE DIASTEREOSELECTIVITY Sowmyalakshmi Venkataramana,b* and Anju Chadhab,c a

Department of Pharmaceutical Chemistry & Analysis, School of Pharmaceutical Sciences,

b

Vels Institute of Science, Technology & Advanced Studies (VISTAS), Pallavaram, Chennai 600 117. Laboratory of Bioorganic Chemistry, Department of Biotechnology, c National Center for Catalysis Research, Indian Institute of Technology Madras, Chennai 600 036, India. Tel.: +91 44 22574106; : [email protected]; [email protected]

Biocatalytic preparation of optically pure secondary alcohols is one of the most preferred green methods for the preparation of optically pure secondary alcohols. The yeast, Candida parapsilosis ATCC 7330 has been established as a versatile biocatalyst to produce optically pure aryl/aliphatic secondary alcohols using two strategies namely, asymmetric reduction and deracemisation.1 In the present study, the asymmetric reduction of different 2-substituted β-keto esters, resulted in the formation of diastereomers as expected with good diastereoselectivity in much lesser time (4-5 h) as compared to earlier reports (4-120 h) (Scheme 1). In addition, pretreatment of the biocatalyst with different inhibitors enhanced the diastereomeric ratio of the products obtained. Details of the study will be presented.

Scheme 1 Asymmetric reduction of ethyl 2-substituted β-keto esters using Candida parapsilosis ATCC 7330


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OP – 7 MICROWAVE ASSISTED AND CONVENTIONAL METHOD SYNTHESES OF VARIOUS DERIVATIVES OF 2-OXO-AZETIDINES USING NITROGEN-SULFUR CONTAINING HETEROCYCLES AND THEIR ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES Savitri D. Srivastava and Santosh K. Srivastava Department of Chemistry, Dr. H. S. Gour Vishwavidyalaya (A Central University), Sagar-470003(MP)-India [email protected]

Microbes remain the major cause of death all over the world because of incomplete or partial therapy. Now-a-days it is very essential demand for a new class of antimicrobials with different mode of action. The structure diversity and biological importance of nitrogen and sulfur containing heterocycles have made them attractive synthetic targets for the last several years. Nitrogen and sulfur containing heterocycles particularly phenothiazine and its derivatives have found widespread use in the field of medicinal chemistry. 2-azetidinones, commonly called as β-lactam are well known heterocyclic compounds for organic and medicinal chemists useful in drugs. The biological significance of these class of heterocycles and important features of microwave assisted synthesis impelled us to synthesis some new derivatives of N-[(4-aryl-3-chloro-2-oxo-azetidineimino)acetyl/propyl] - phenothiazines starting from N - [(arylidenehydrazino) – acetyl/propyl] phenothiazines. Conventional method has also been adopted for their synthesis. The structures of all the newly synthesized compounds were confirmed by IR, 1HNMR, 13CNMR, FABMS and other routine techniques. The antibacterial activity were performed on E. coli and S. aureus and antifungal activity on A. flavus and C. albicans by the reported methods as given in the literature. MIC values were also determined. Some of the products were found to give satisfactory results. On the basis of SAR, the sequence of the activity containing the following groups were NO2 > Cl > Br > OCH3 > CH3.


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OP – 8 SYNTHESIS AND EVALUATION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF SOME (2,5-DIHYDROXYPHENYL)((1S,2S,3S,4R)-3(SUBSTITUTEDPHENYL) BICYCLO[2.2.1]HEPT-5-EN-2-YL)METHANONES Ganesamoorthy Thirunarayanan Department of Chemistry, Annamalai University, Annamalainagar-608002, India [email protected]; [email protected]

More than 85% yields of (2,5-dihydroxy phenyl) ((1S,2S,3S,4R)-3-(substituted phenyl) Bicyclo[2.2.1] hept-5-en-2-yl)methanones(I) were synthesized by Aqueous phase Diels-Alder reaction between substituted styryl 2,5-dihydroxyphenyl ketones and cyclopentadiene in presence of fly-ash:H2O catalyst under cooling condition. These methanones were characterized by their physical constants, micro analysis and spectral techniques. The antimicrobial activities of these methanones were evaluated using standard Bauer-Kirby disc diffusion method. There are three gram positive and three-gram negative microbes were used for evaluation of antibacterial activities. Four fungal microbes were utilized for measuring the antifungal activities. The halogen substituted methanones shows significant antibacterial activity. The methoxy and nitro substituted compounds showed significant antifungal activities. The anti-oxidant activity of these compounds were measured by DPPH radical scavenging activity measurement. From the experimental results, all ketones showed antioxidant activity. The hydroxy and methoxy substituted methanones shows significant activity.

(I)


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OP – 9 ULTRASOUND MEDIATED FUNCTIONAL GROUP REDUCTION AND CHEMOSELECTIVE STUDIES BY DMANB Venkatesan Jayakumar1* and Mohammed Fakruddin Ali Ahamed2 1*

Department of Chemistry, Shri Vaishnav Institute of Science (SVIS), SVVV University, Indore, India. Author 2

Department of Chemistry, Debest College of Science & Research Centre, Accra, Ghana, West Africa. [email protected]

The current study emphasize about influence of ultrasound irradiation on moderately reactive N,N-Dimethyl aniline.borane (DMANB) towards reduction of organic substrates like carboxylic acids, amides, imine, amino acids, aldehydes, ketones and esters. DMANB conveniently reduces the functional group within 15-25 min., of sonication and it does not reduce the ester group even after 300 min., of ultrasound irradiation. Besides these reducing properties the DMANB displays chemoselectivity towards different functional group. The amalgamation of borane species from amine.borane and ultrasound irradiation provides ecofriendly and expeditious method for the reduction of functional groups. Boron reagents play a pivotal role in organic synthesis for hydroboration reaction1-4 as well as for functional group reduction5-8. Over the decades amine.borane complexes received great attention due to its wide scope, used in dye industry9, for various industrial applications

10-13

, in organic

synthesis as a reagent for functional group conversions14-16. These complexes were efficiently used in hydrogen (H2) storage fuel cells17-19 because of its stability and high gravimetric content of hydrogen. Jun Okuda et al20 recently reports triphenylborane (BPh3) able to catalyze the reduction of tertiary amides with hydrosilanes to give amines under mild condition with high chemoselectivity in the presence of ketones, esters, and imines21. Burnham prepared number of amine-borane complexes of aromatic, aliphatic and heterocyclic amine, and borane complex of α-amino acids, and nucleoside derivatives were reported to enchant wide range of biological activities22. The concept of frustrated lewis pairs (FLPs) on amine.borane was first accomplished and further used for dihydrogen activation by Repo etal23. Stubbs etal reports the preparation of first soluble polyamino boranes, by metal free hydrogen transfer from amine.borane complexes 24. Itsuno etal successfully synthesized and characterized polyaminoboranes via dehydro polymerization of primary amine.boranes25. Several tertiary amides were reduced by using one or two equivalents of various dialkylboranes, such as 9-borabicyclo [3.3.1] nonane (9-BBN), dicyclohexylborane (Chx2BH), disiamylborane (Sia2BH). But sterically hindered amine.borane complexes of (Chx2BH) and (Sia2BH) reduces tertiary amides to corresponding aldehydes26.


29

The potential utility of amine.borane complexes was limited due to its structural features, stability27 and lack of reactivity towards the functional groups28. The addition of acetic acid29, mineral acid30, and lewis acid31 is required to activate the stable amine.borane complexes like triethylamine.borane and pyridine.borane. Kanth etal reported that one set of amine.borane complexes derived from N,N-dialkyl anilines and N,N-dialkyl amines is significantly more reactive than most other amine.boranes31-33, this can be explained based on steric effects and electronic property of the groups attached to nitrogen atom which influence their reducing property26,30,31. Preparation of these amine.borane complexes were cumbersome and challenge involves alkylation of aniline or mono alkyl aniline, which is delicate and time consuming8,25,31. Rather attempt to prepare a new reactive amine.borane complex, we choose the novel technique like microwave irradiation38, ultrasound irradiation (sonication)37 to activate moderately reactive DMANB towards hydroboration and reduction of functional groups. The previous results reveals the synthetic potential of DMAB34,36,37 as a reagent for hydroboration and reduction reactions, under microwave16 and hydroboration reactions under ultrasound irradiation and further expand its utility as a hydride source, we undertook a series of compounds for the reduction of functional groups under sonication, on the other hand no report was available on the use of DMAB as a reducing reagent for different functional groups under sonication condition. It has been well known that the activation of various chemical reactions by ultrasound, is not only enhances the selectivity and product yield but also shorten the reaction time and minimize the undesired side products39. Furthermore, with the ease of recovery and recycling of N,N-Dimethyl aniline after the reaction makes amine.borane complex as an environmentally benign reagent.

Key words: DMANB, ultrasound irradiation (sonication), reduction, chemoselectivity


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OP – 10 EXTRACTION AND CHARACTERIZATION OF GLYCERIDES FROM OILSEED OF AZADIRACHTA INDICA PLANT FOUND IN MANIPUR Md. Abdul Halim Shah Department of Chemistry, Dhanamanjuri University, D.M. College of Science, Imphal, Manipur, India. [email protected]

Azadirachta indica (Margosa tree) locally called Neem tree in Manipuri belongs to Meliaceae family. It is native to Indian including Manipur, Myanmar, Bangladesh, Sri Lanka, Malaysia and Pakistan. Its fruit and seeds are the source of Neem oil. The white and the fragrance flowers are arranged in more or less drooping axillery penicles which are upto 25 cm long. The fruit was a smooth olive like drupe. The fruit skin is thin and the better-sweed pulp is yellowish-white and very fibrous. Oil was extracted from seed of Azadirachta indica by solvent extraction process. physiochemical parameters like acid value, refractive index, density, iodine value, saponification value, percentage of moisture and IR of the pure oil of Azadirachta indica seed oil were determined. Fatty acid methyl esters (FAME) composition of Azadirachta indica seed oil was determined by IR, NMR and GC-MS analysis. FAME from Azadirachta indica consist of 18.73 wt% of methyl palmitate (C16:0), 72.18 wt% of Methyl Linoleate (C18:2) and 9.09 wt% of methyl stearate (C18:0). Iodine value, saponification value and centane index of the FAME (biodiesel) from Azadirachta indica were theoretically calculated. The seed oil from this plant shows that the oil is not very much different from conventional and commercially useful seed oil. More over this oil is expected to work well in diesel engines.

Keywords: Neem tree, Azadirachta indica, transesterification, non-edible vegetable oils, Athia, Biodiesel .


31

OP – 11 EVALUATION OF ANTICANCER ACTIVITY OF SOME NOVEL 2, 5–DISUBSTITUTED 1, 3, 4 – OXADIAZOLE DRIVATIVES AGAINST COLO-205 AND EAC MOUSE TUMOUR MODELS FOLLOWED BY MOLECULAR DOCKING AGAINST TOPOISOMERASE I Asish Bhaumik*1, Raja Chakraborty2 and M. Chinna Eswaraiah3 1*

2

Research Scholar, Department of Pharmaceutical Sciences, Assam down town University, Gandhi Nagar, Panikhaiti, Guwahati- 781026, Assam, India.

Associate Professor, Department of Pharmaceutical Sciences, Assam down town University, Gandhi Nagar, Panikhaiti, Guwahati- 781026, Assam, India.

3

Professor, Department of Pharmacognosy, Anurag Pharmacy College, Ananthagiri, Kodad-508206, Suryapet (Dist.), Telangana, India. [email protected]

The main aim and objective of the present research work was the synthesis, spectral characterization and evaluation of in vitro anticancer as well as in vivo antitumour activity of some novel oxadiazole derivatives followed by docking studies against topoisomerase I enzyme. The structural confirmations of the synthesized compounds were assigned by IR, NMR and Mass spectral analysis. Molecular docking studies were carried out by AUTO DOCK programme. The in vitro anticancer activity of the synthesized compounds (AB1-AB8) was performed by SRB assay. An investigational study was designed to evaluate the in vivo antitumor activity of synthesized compounds and study was carried out with EAC cell line induced malignant ascites on mouse tumour models. In silico molecular docking studies displayed the binding energies (k.cal/ml) of synthesized compounds (AB1-AB8) -1.20, -0.92, -3.24, -1.83, -1.04, -3.28, -3.22, -3.29 which indicated that the compound had high binding affinity towards the target protein Topoisomerase I with PDB id 1A36 and inhibit the Topoisomerase I function in comparison with standard drug topotecan (TTN: -2.06 k. cal/ml). In vitro SRB assay displayed that all the synthesized compounds (AB1-AB8) had the potential ability to inhibit the proliferation of COLO-205 with the highest percentage of growth inhibition AB8 = 92.92±0.0305% > AB6 = 92.32±0.036% > AB7 = 91.74±0.025% > AB3 = 91.59±0.015% > AB4 = 90.89±0.045% > AB1 = 90.6±0.001% > AB5 = 89.23±0.321% > AB2 = 88.9±0.015% etc at dose 300 µg/ml and IC50 values of synthesized compounds (AB1-AB8) were found to be 3.89±0.095 µg/ml, 4.133±0.057 µg/ml, 3.233±0.208 µg/ml, 3.767±0.152 µg/ml, 3.39±0.441 µg/ml, 2.433±0.577 µg/ml, 2.767±0.152 µg/ml, 2.0203±0.095 µg/ml and standard drug topotecan (TTN): 94.64±0.01%) found to be 1.973±0.0152 µg/ml. In vivo experimental data displayed that the synthesized compounds AB1-AB8 (100 mg/kg) significantly increased the PILS. While 5-FU increased the life span of 95.65%, and the PILS of synthesized compounds were found


32

to be AB1= 52.17%, AB2= 45.65%, AB3= 65.21%, AB4= 56.52%, AB5= 50.00%, AB6= 82.60%, AB7= 77. 27% and AB8= 91. 30%.

Fig 1: Structure of Topoisomerase I

Key Words: Anticancer; molecular docking; SRB; malignant ascites and PILS etc.


33

OP – 12 HOW AN OPTO-ELECTRONIC CHEMORECEPTOR UNDERGOES DUAL CHANNEL SENSING OF BIOLOGICALLY UBIQUITOUS Cu2+ AND LETHAL CN- FROM AQUEOUS MEDIUM† Suparna Paulab, Pritam Ghosha±, Naresh Chandra Murmuab and Priyabrata Banerjeeab* a

Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India.

b

Academy of Scientific & Innovative Research (AcSIR) at CSIR-CMERI, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India. ±

Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa 3200008, Israel. [email protected] and [email protected]

Supramolecular Chemistry deals with non covalent host guest interaction leading to analyte recognition. Over the years this branch of Chemistry thrives with different approaches of analyte recognition from organic to aqueous medium. Starting from fundamental research to everyday usable materials has been developed by this wing of Chemistry. Therefore the designed synthesis of chemosensor towards specific recognition of aqueous phase analytes have become one of the emergent areas of its interest. As a part of our ongoing research activity in the domain of environmental and health related issues now a day’s attention has been levied towards development of ditopic chemosensor which is of tremendous impact owing to its high selectivity towards biologically relevant inorganic ions such as Cu2+ and CN- pertaining to their role in the environment. In its consequence a chromogenic and fluorogenic fused aromatic system based opto-electronic chemoreceptor (2-(benzo[d]thiazol-2-yl)-1-((pyren-8-yl)methylene)hydrazine) (TyM) has been developed that exhibits distinct optical responses (yellow to colorless in case of Cu2+ and yellow to bright red for CN-) in the nanomolar limit of detection. The binding efficiency of the host: guest has been affirmed by sophisticated analytical instrumentations like UV-Vis, Fluorescence, FT-IR, 1HNMR, 13C-NMR, and ESI-MS thereby deducing the plausible mechanistic course of interaction. The experimental evidences are further strengthened and fully corroborate with the Theoretical calculations. Interestingly the spectrophotometric response of the developed chemoreceptor TyM turns out to be reversible with incremental addition of stoichiometric amount of CN- and H+. In this relevance the optical recognition phenomenon has been used to mimic different molecular logic functions thas has been further synchronized and interfaced with molecular Logic Gate to molecular electronics primarily based on Boolean Algebra. In addition the tailor made ditopic chemoreceptor TyM exhibits cell permeability and therefore is capable of intracellular investigation of transition metals like Cu2+ from male microspores of seed plants (Bauhonia Nigalandra) and Monilia Albicans (diploid fungus), explicating the bio applicability of TyM towards Cu2+. This can make the chemoreceptor in the near future an impending candidate and would further escalate the practical applicability of the developed chemoreceptor TyM in the realm of Supramolecular Chemistry. International Conference on”Modern Trends in Chemical Sciences Including Green Chemistry – MTCSGC-2018”

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OP – 13 STRUCTURAL AND IONIC TRANSPORT STUDY OF NATURALLY PLASTICIZED NANO-POLYMER ELECTROLYTE FOR DEVICE APPLICATION Sharda Sundaram Sanjay1*, Nidhi Asthana2and Kamlesh Pandey2 1

Chemistry Department , Ewing Christian College, Allahabad-211003

2

National centre of Experimental Mineralogy and Petrology, University of Allahabad, Allahabad-211002. [email protected]

Polymer-electrolytes are providing an exciting base for newer technology for the development of

cost effective electrochemical devices and theirpotential applications such as in solid-state

batteries (fuel cells, solar cell, secondary batteries smart windows etc.).Poly(vinyl alcohol) (PVA) is one of the eco-friendly semicrystalline polymer which has inter- and intra-molecular hydrogen bonds, whose degree is greatly dependenton the texture of the polymer. We have synthesized a naturally plastisizednanopolymer electrolyte membrane with high ionic conductivity using PVA , aloe-vera pulp and lithium thiocynate.Aloe vera has an important outer fibrous vascular bundle layer and the inner colourless parenchymatic gel. Randomly interwoven nanofibrous structures are generally preferred for electrolyte systems due to their continuous structure.The use of nanofiller provided better polymerinterface as well as the high free volume size, through whichmolecules transport occurs in nanocomposite membranematrix.The advantage of a surface comprised of ultrafine, continuous nanofibers naturally becomes highly porous. The high porosity is the major responsive factor to enhance the ionic conductivity which was determined through impedance study in the temperature range 298-373 K. The structural behavior of the polymer electrolytes were investigated by XRD, optical microscopy and scanning electron microscopic technique.Polymer salt interactions were studied by the Bruker Alpha FTIR spectrophotometer in the wave number range 3500 cm-1 to 600 cm-1. XRD curve revealedamorphous nature of membrane, which is favourable for the better conduction as the conductivity-frequency plots showed the Universal power law. The asymmetric shape of the Dielectric relaxation plots given a strong evidence of low frequency dispersion and deviation from the pure Debye behavior.


35

OP – 14 DOING GREEN CHEMISTRY WITH COMPUTATIONAL TECHNIQUE Rupa S Madyal Department of Chemistry, National Defence Academy, Khadakwasla, Pune, Maharashtra [email protected]

Green chemistry ideas have been gaining the ground for past more than two decades to turn industrial chemistry green. The term green chemistry coined by Paul T. Anastas is well acknowledged in both: chemical industries and academics. Though green chemistry is now fairly mature, it holds big challenges for the next generation chemist to tackle. Chemistry is diverse but it has dark side too. Undoing of damage caused to the environment due to innovation associated problems is not easy with existing pressure on environment. Since CO2 is perceived to be responsible for global warming and is the major contributor for the gradual increase in the temperature, development of CO2-specific adsorbent deserves more research attention. Extensive efforts are being directed to develop efficient technologies for CO2 sequestration, utilization and capture.1-7 This paper deals with development of adsorbent surface for selective take up of CO2 using Density Functional Theory, which is computational technique-proven to be a cleaner tool to screen the compounds towards selectivity of particular target without doing actual experiment with hazardous chemicals.

Keywords: CO2-specific adsorbent, Density functional theory, Amine-functionalised polymers.


36

OP – 15 EFFICIENT CARBOCATALYTIC AZIRIDINATION OF MORITA-BAYLIS-HILLMAN ADDUCT IN WATER Ankita Rai Assistant Professor, School of Physical Sciences, Jawaharlal Nehru University, New Delhi – 110067 [email protected]

The Graphite is multilayer of graphene monomer having hexagonal lattice with sp2hybridized carbon atom. Upon oxidation of graphite, Graphene oxide is formed which is single layered having number of defects, holes and functional groups. Due to presence of functional groups on the defected surface, edges of graphene oxide, graphene oxide act as efficient catalyst.Aziridine, a nitrogen containing heterocyclic compound shows highly regio- and stereoselective ring opening reactions which accommodate a suitable route to the stereoselective synthesis of functionalized amino compounds, other heterocycles and alkaloids. Aziridination of olefin is one of the best tools for the incorporation of nitrogen into organic compounds. This three membered aziridine ring is present in many bioactive natural products. Due to its large implications, scientists are trying to synthesize various aziridine derivatives of alkene through various synthetic methodology one of them using different nitrene sources from as PhINTs, Chloramine–T, Bromamine–T, Tosylcarbamates and organic azides. Out of these nitrene sources, PhINTs has advantages over other sources in terms of yield and less side products.The C–N bond formation is contemplated as tough task in organic syntheses. Nitrenes, exhibit property of insertion in double bond, and have been considered as a useful 2e– oxidant for C–N bond formation reaction. Among nitrene transfer synthetic methods of aziridine, catalytic induction of nitrene via transition metal complexes is the most suitable approach till-to-date. However, nowadays metal-free aziridination of alkenes has been interesting aspect among scientists due to its practical, economic and environmental goodness.In view of present context, and our interest in nitrene transfer reactions using PhINTs, we have explored the approach for aziridination of MBH adduct. The envisaged strategy involves a metal-free, efficient and selective aziridination of Baylis Hillman adduct in presence of I2 and PhINTs usingGO (graphene oxide)as catalyst in water with good to excellent yield of pure products (87-93 %). The reaction involves aziridination on double bond of Baylis Hillman adduct with conversion of hydroxyl group into ketonic group leaving other functional groups unaffected.


37

OP – 16 VISIBLE LIGHT INDUCED [3+2] CYCLOADDITION: AN EFFICIENT GREEN PROTOCOL FOR TETRAZOLES Vijai K. Rai Department of Chemistry, Guru Ghasidas Vishwavidyalaya (a Central University), Bilaspur, C.G. [email protected]

Due to eco-compatibility, easy availability, safe handling and everlasting abundance as non-conventional energy source for activation of reactions, visible light-induced synthetic strategies, especially photoredox catalysis, have emerged as state-of-art alternative of traditional conventional synthetic methods to advance the green chemistry program.A catalyst of renewable origin would be in accordance with green chemistry principle. The polymeric graphitic carbon nitride (g-C3N4) has interested earth abundant elements, which could be obtained by pyrolysis of nitrogen-rich containing precursors. Furthermore, metal-doped gC3N4, especially,Co@g-C3N4 shows extremelyhigh catalytic activity for general as well as photocatalytic organic reactions. Tetrazoles are an elite class of compounds being one of the most stable nitrogen-rich heterocycle.Interest in tetrazole chemistry has increased rapidly over the past few years due to its wide application ranging from pharmaceutical, biological, coordination and material to synthetic organic chemistry for generating a library of N-heterocycles.The classical approach for tetrazole synthesis involves two-component reaction of azide precursors and N-containing compounds via 1,3-dipolar cycloaddition of azide with organic nitrile in acidic environment. Herein, we are first to report visible-light driven unprecedented direct synthesis of tetrazole starting from aldehyde using Co@g-C3N4 as novel photocatalyst. Furthermore, structure of synthesized catalyst was confirmed by UV-visible, FT-IR, SEM, EDX, TEM, XRD, Raman and XPS analyses and the products were catalyzed by their 1H and

13

C NMR spectra. The cornerstone of the

envisaged method is application of NaN3 not only as three-nitrogen donor for 1,3-dipolar addition but also it converts aldehyde into in situ isocyanide as one-nitrogen source. Moreover, the developed methodology in entirely green as it involves visible-light catalysis at room temperature and essentially avoids hazardous chemicals for synthesis and purification of product.


38

OP – 17 POGIL: AN EFFECTIVE METHODOLOGY FOR LEARNING Maya Bhat, BarnaliSaha*and Riya Thomas* V.E.S. Institute of Technology, Mumbai 400074

POGIL (Process Oriented Guided Inquiry Learning) is student centered group learning instructional strategy to enhance the skills of the learner. This was initially used and adapted to chemistry class rooms by Rick Moog, Jim Spencer and John Farrell in mid 1990s [1]. This technique is practiced to learn various topics in many high schools, colleges and others. It has been supported by grants from National Science Foundation, US department of Education, Hach Scientific foundation and The TOYOTA U.S.A. Foundation [2]. It is verified that students attending POGIL sessions regularly obtain higher scores in standardized exams when compared with students attending lecture sessions on the same topic. According to the three hierarchical models to classify educational learning objectives structured in Bloom's taxonomy[3],cognitive skills is the primary domain to comprehend, grasp and critically think on a particular subject. POGIL is an interactive association where students and teachers can apply content knowledge to develop the cognitive skills. Most of the engineering institutions affiliated to Mumbai University offer the courses in Electronics, Electronics and Telecommunication, Computers, Instrumentation and Information Technology. Students studying in first year in these colleges do not give importance to one of the foundation subjects, Applied Chemistry. The basic reason is Applied Chemistry is discontinued from second year and this is falsely perceived as an irrelevant subject for further studies. As a result students score low grades in the semester exams. Hence, to generate interest, we have implemented POGIL for 120 students out of 240 first Year Engineering Students (testing students) in our institution. We have observed the improved performance of these 120 students in short test and final examination. The Box plot, cumulative graph, normal curve, Pie charts and Bar graphs generated from the data of the scores obtained highlight the improved potential of these students after attending POGIL.


39

OP – 18 SYNTHESIS OF SOME NEW SCAFFOLDS OF ISOXAZOLIDINE & ISOXAZOLINE DERIVATIVES USING NOVEL CLASS OF NITRONES VIA 1,3-DIPOLAR CYCLOADDITION REACTION USING GREENER CHEMISTRY PROTOCOL AND THEIR FURTHER APPLICATIONS INCLUDING BIOLOGICAL ACTIVITIES OF THE CYCLOADDUCTS Bhaskar Chakraborty Organic Chemistry laboratory, Sikkim Government College (Sikkim State University), Gangtok 737102, Sikkim, India

[email protected]

Some environment friendly greener methodologies have been described for the synthesis of new isoxazolidine and isoxazoline derivatives using new nitrones via 1,3-dipolar cycloaddition reactions. These also include synthesis of bisisoxazolidine and bisisoxazoline derivatives synthesized from glyoxal and terepthalaldehyde respectively. Few new spiro isoxazolidine derivatives have been also reported using new dipolarophiles. Furthermore, these new isoxazolidine and isoxazoline derivatives are found to have vast synthetic potential as they could be used as precursors for the synthesis of a variety of new organic molecules including peptides, 1,3-amino alcohols with potential biological activities. For the synthesis of peptides, it has been observed that CDMT (chloro dimethyl triazine) has found to be better coupling reagent than conventional DCC (dicyclohexyl carbodiamide) due to the formation of insoluble by-product (N,N-dicyclohexylurea) and purification becomes tedious.. The new nitrones reported are synthesized from dihydropyran, chlorohydrin, glyoxal, terepthalaldehyde and formamide respectively. Significant increase in the reaction rates, excellent yields, and high selectivity (diastereo and regioselectivity) are the important features observed in these cycloaddition reactions following greener methodologies. It has been observed that high diastereoselectivity in these cycloaddition reactions have been observed when the reactions are performed in water. Synthesis of aldehydes and ketones with new nitrones in atom efficient reactions are the most attractive features as they have future scopes in these reactions. The side products (enamines) obtained during the synthesis of aldehydes and ketones has been successfully utilized as new dipolarophiles in these cycloaddition reactions for the synthesis of spiro cycloadducts. Potential biological activities including cytotoxicity of the new molecules have made these new syntheses much more attractive and useful as well.

Keywords: Novel class of nitrones, cycloaddition reaction, diastereo and regioselectivity, novel isoxazolidine & isoxazolines, greener techniques, biological activity.


40

OP – 19 IMPROVED ACTIVITY OF A GRAPHENE/HAFNIUM OXIDE HYBRID ELECTRODE IN AN ELECTROCHEMICAL SUPERCAPACITOR M. Jayavel1, 2, N. Ramalakshmi 1* and J. Venkatachalam3 1 2

Department of Chemistry, Presidency College (Autonomous), Chennai 600005, Tamil Nadu, India.

Department of Chemistry, Meenakshi College of Engineering, Chennai 600078, Tamil Nadu, India. 3 Department of Physics, Meenakshi College of Engineering, Chennai 600078, Tamil Nadu, India. * [email protected]

This paper reports on the preparation of graphene modified with hafnium oxide nanoparticles composites by a simple mixing and their use as efficient electrode in electrochemical supercapacitors. The technique relies on simple mixing the aqueous solutions of hafnium oxide nanoparticlesand graphene at different ratios of graphene content (30, 40 and 50wt %). The morphological studies, chemical composition and electrochemical behavior of the resulting graphene/hafnium oxide nanocomposites were investigated by using UV/vis spectrometry, X-Ray Diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and electrochemical respectively. The electrochemical performance, including the capacitive behavior of the graphene/hafnium oxidenanocomposites were investigated by cyclic voltammetryand galvanostatic charge-discharge curves. The graphene/hafnium oxidenanocomposites (50wt %) ratio exhibited the best performance with a specific capacitance of 268 Fg-1at a scan rate 5 mVs-1 in 1 M H2SO4and it shows excellent long-term cycle stability.

Keywords: Hafnium Oxide (HfO2), Graphene, Supercapacitor, Cyclic Voltammetry.


41

OP – 20 KINETIC AND THERMODYNAMIC INVESTIGATIONS OF THE OXIDATION OF INDUSTRIALLY IMPORTANT SECONDARY CYCLIC ALCOHOLS BY INORGANIC OXIDANT, KIO3 Harichandra A. Parbat* and D. V. Prabhu Department of Chemistry, Wilson College (aff.University of Mumbai),Mumbai 400007 [email protected]

The oxidation of secondary cyclic alcohols, Cyclopentanol, Cyclohexanol and Cyclooctanol has been investigated using inorganic oxidant KIO3. Cyclopentanol is used in the manufacture of perfumes and pharmaceuticals and Cyclohexanol is an important feedstock in the manufacture of polymers especially nylons and plasticizers. Cyclooctanol is also used in the preparation of perfumes.The kinetics of oxidation of alcohols was studied under first order conditions with respect to the organic oxidant i.e. [KIO3] Cyclohexanol > Cyclooctanol The sequence has been discussed on the basis of the ring size, structures and isomeric characteristics of the alcohols under study.

Keywords: secondary cyclic alcohols, oxidation, kinetics, retardation of reaction, ionic strength, energy of activation, entropy of activation.


42

OP – 21 FERROCENIUM ION ENCAPSULATED ZSM-5 MODIFIED GLASSY CARBON ELECTRODE FOR THE DETECTION OF TRACE AMOUNT OF THIOUREA Rimki Bhattacharjya Pandu College, Guwahati-12, Assam

In recent years, there has been increasing interest in the electrochemical behaviour of thiourea and substituted thiourea at different metal electrodes due to their various applications as additives for metal electrodeposition and its ability to inhibit the corrosion process. Thiourea is widely used in rubber industry, photography and agriculture1. Thiourea is also used as a spectrophotometric reagent for the determination of several metals2. It is toxic due to its influence on the metabolism of carbohydrates and has carcinogenic activity3. There are a number of spectrophotometric, polarographic and chromatographic methods reported for the detection and determination of thiourea4. The major drawbacks of these are the interference from other organic molecules4. Ferrocene based voltammetric sensors have gained current research interest. Tarraga et al5 have reported synthesis of azaferrocenophene to detect Mg+2, Ca+2 and Ni+2; Oton et al6 reported coupling of heterodiatopic ligand with ferrocene through urea for the detection of H2PO4- ion; Beer et al7 reported synthesis of 1,1/-bis(alkyl-N-amido) ferrocene for anion recognition; Suteliffe et al8 reported oxazoline and imine substituted derivatives of ferrocene for metal cation. Synthesis of these receptor-spacer-detector motif sensors, generally involve complicated organic reactions. Self assembled Monolayer (SAM) on electrode surface has been studied extensively as sensor for a number of molecules and ions. SAM of 1,1/- bis(alkyl-N-amido) ferrocene has been reported to recognize anions7. In most of these SAM modified electrodes the mother electrode cannot be recovered by simple methods. Encapsulation of a probe inside a cast film on electrode surface shall make it easier to recover the mother electrode. The ZSM-5 (Na12Al12Si36O9644H2O(ZSM-5)) is an aluminosilicate with high silica and low aluminium content developed by Mobil Oil. Its structure is based on channels with insecting tunnels. The ZSM-5 zeolite is used as catalyst in petroleum industry for hydrocarbon interconversion. Zeolite modified electrode as electrochemical sensor is an area of rapid growth. In this paper it is observed that the cathodic and anodic peak currents of ferrocene encapsulated inside ZSM-5 modified Glassy Carbon electrode decreases with thiourea added at micro molar concentration in the electrolytic solution. The decrease in current has been proposed to be due to the formation of bridged complex between ferrocene and thiourea. The original cyclic voltammogram of ferrocene which disappears due to interaction with thiourea can be recovered using potassium ferricyanide solution. Key Words: Thiourea, Ferrocene, Cyclic Voltammogram, ZSM-5, Self assembled monolayer International Conference on”Modern Trends in Chemical Sciences Including Green Chemistry – MTCSGC-2018”

43

OP – 22 STUDIES ON Ni AND Mo DOPED ONTO N- S CARBON MATERIAL FOR THE ELECTROCHEMICAL BEHAVIOR IN ALKALINE MEDIUM Prajakta R. Parab1, Tejaswini Naik1 and Purnakala Samant1* 1

P.G. Department of Chemistry, Government College of Arts, Science and Commerce, Khandola, Marcela- Goa.

[email protected], [email protected]

Carbon as support materials finds wide application in the field of Catalysis, electrochemistry, fuel cells, capacitors, sensors etc. However these applications could be well exploited by appropriate tuning of its surface properties. Recent trend is towards development of insertion of heterogeneous metals such Nitrogen, Phosphorous and Suphur etc within carbon framework. Doped materials tend to modulate intrinsic properties of carbon material along with chemical and optical properties of the substrate. In the present investigation N-S is incorporated on carbon by simple chemical method. Sucrose and thiourea are mixed in appropriate proportion to produce carbon dots which arethen separated or isolated using biphasic medium at 180 0C. The obtained N-S carbon (N-SC) samples areused as support material. Ni and Mo will be impregnated on the N-S-C to obtain Ni/N-SC, Mo/N-SC and Ni-Mo/N-SC. These samples are characterized using various instrumental techniques such in situ FIIR, XRD, SEM etc. The samples are then coated onto platinum electrode using nafion. The cyclic voltammetric studies are performed in the potential window of -1.0 V to 1.5 V at the scan rate of 10mV/s. The distinct peaks are observed in cyclicvoltamogram of the synthesized sample indicating facile oxidation of the methanol in alkaline medium.


44

OP – 23 KINETIC ESTIMATION OF ALDOSUGARS BY ELECTRON TRANSFER INDICATOR REACTION WITH Mn(III) PYROPHOSPHATE Anand G.Fadnis Government (autonomous) Holkar Science College, Indore-452001 [email protected]

The Mn(III) in the form of pyrophosphate has been used in the present electron transfer indicator reaction with three aldosugarsviz D-glucose, D-xylose and D-erythrose for their kinetic estimations.The Mn(III) pyrophosphate complex reacts with aldosugar molecule to form a complex by displacing one of the pyrophosphate ligand which then disproportionate to produce lower aldosugar by free radical mechanism. The simplified general indicator reaction can be shown as: CHO(CHOH)n CH2OH + Mn(III) + H2O → CHO(CHOH)n-1 CH2OH +HCOOH + Mn(II) + 2H+ The rate data of present indicator reactions in the form of decreasing absorbance at 514nm(λ maxof

Mn(III) pyrophosphate complex) with time given for these aldosugar reactions have been used

for their respective estimation in simulated samples adopting (a) Rate constant, (b) variation of absorbance at fixedtime (c) variation of time at fixed absorbance of (d) One point and (e) Two point methods using respective calibration plots. The consistency and reproducibility of these results have clearly

showed

that

thesekinetic

estimations

of

aldo

sugars

like

earlier

reported

cerimetric/vanadimetric estimations of these aldosugars can also be used as an alternative/additional analytical method to the existing traditional estimation methods in the present day laboratory conditions and also as advance laboratory experiments


45

OP – 24 FACILE SYNTHESIS AND CHARACTERIZATION OF COPPER DOPED STRONTIUM M-HEXAGONAL FERRITES ITS PHOTO CATALYTIC AND ANTIBACTERIAL APPLICATIONS T.L Ajeesha1, Ashwini Anantharaman1, Jansi Rozario2 and Mary George1* 1&1*

Department of Chemistry, Stella Maris College, Chennai-600086, India

2

Department of Bioinformatics, Stella Maris College, Chennai-600086, India [email protected]

The organic sewage discharge from the industries to the water bodies leads problems to both human and nature. In this regard, the present study was focused on synthesis of copper doped strontium ferrites by co-precipitation method and the as synthesized materials were calcined at 650⁰C for 8 hours to form the corresponding ferrites Sr1-xCuxFe2O4(x=0,0.6,1). The spinel phase of the as synthesized nano material was calculated by X-ray diffractometer. The crystallite size varied from 15-47 nm. The particle distribution and micro structural was studied by Transmission Electron Microscopy. Surface characterization was done by using isothermal BET technique which showed high surface area for the synthesized nano material. The magnetic hysteresis curves were recorded at room temperature using vibrating sample magnetometry. The saturation magnetization value (Ms) and magneticcoercivity (Hc) increased upon Cu2+doping. The as synthesized photocatalyst was studied for its photo-fenton activity over organic Methylene Blue dye and found to have 94 % degradation. All the samples were subjected to dc electrical conductivity studies at room temperature.

Key words: spinel; co-precipitation; hexagonal ferrites; photocatalyst.


46

OP – 25 SYNTHESIS, STRUCTURAL INVESTIGATIONS AND BIOLOGICAL EVALUATION OF BISMUTH-DICLOFANAC AND MEFENAMATE COMPLEXES Beena K. Vernekar* Department of Chemistry, Govt college of Arts Science and Commerce, Khandola, Marcela Goa.

Bismuth complexes has been well documented to be the potential drug to combat infections of Helicobacter pylori a pathogen causing ulcers and and cancer of the stomach. Bismuth when complexed with carboxylate ligands forms insoluble coatings on the stomach wall from which BI(III) can be released slowly and act against the pathogens. In view of this fact four novel compounds of Bismuth(III) with the anti-inflammatory drugs like diclofenac and mefenamic acid have been synthesized in presence of coligands like substituted dimmines and pyridine derivatives. The complexes are structurally characterized with the help of Infrared spectroscooy, UV vis spectroscopy, Single crystal x ray diffraction analysis, Thermogravimetry etc.The synthesized complexes will be subjected to test their efficacy to antimicriobial and specificity for the cell line of Helicobacter pylori.


47

OP – 26 INVESTIGATION OF BIOACTIVE CONSTITUENTS BY GC-MS AND ITS COMPARATIVE STUDIES ON LEAF EXTRACTS OF PELTOPHORUM PTEROCARPUM N. Abirami1, R. Arulmozhi1, R. Siranjeevi1 and M. R. Ganesh2 1

Department of Chemistry, Faculty of Engineering and Technology, SRMIST, 2IIISM, SRMIST

[email protected]

Plants play an important role in treatment of various metabolic disorders such as Diabetes mellitus, cancer and other chronic diseases. The need of novel pharmaceutical products derived from plants with less side effect has attained a great interest in current research. Current study focuses on extraction of the leaves of Peltophorum pterocarpum using three different solvents such as ethanol, ethyl acetate and hexane of varying polarity by Soxhlet method. A comparative study were carried out on the phytochemicals present. Further to know about compound profile, TLC was also carried out for the three extracts. GC-MS and HPLC studies were carried out to find the most probable compounds present in all the three extracts. Finally, MTT assay was performed on human skin cancer cell lines (A-431) for the three extracts.

Key words: Diabetes mellitus, phytochemicals, GC MS, HPLC, cancer cell lines


48

OP – 27 SYNTHESIS OF NiO OXIDE USING PRECURSOR AND ITS PHOTOCATALYTIC ACTIVITY Jyoti V Sawant Department of chemistry, Govt. College of Arts, Science & Commerce, Sanquelim, Goa, 403505, India, [email protected]

Nickel oxide (NiO) was synthesized by the thermal decomposition of precursor obtained from reaction of NiCl2.6H2O with in situ generated sodium salt of 4-nitrobenzoates from the reaction of 4-nitro benzoic acid (4-nbaH) and NaHCO3. Thermal decomposition of the nickel carboxylate precursor resulted in the formation of green nickel oxide (NiO). NiO was characterized by the metal analysis and FT-IR analysis. The morphology of nickel oxide was determined by using SEM-EDS analysis. Photocatalytic degradation of organic pollutants by metal oxide can be considered as an efficient process for degradation. In the present study, photocatalytic degradation of organic dye on NiO has been analysed spectrophotometrically.

Keywords: NiO, decomposition, photocatalytic, SEM, dye.


49

OP – 28 DETECTION OF ORGANOCHLORINE PESTICIDES TYPHADOMINGENSISIN EUPHRATES RIVER/ MIDDLE OF IRAQ Amerah Imran. H. AL-Janabi Department of Biology/ College of Biotechnology / University of Al-Qassim green [email protected]

This study included investigate the Organochlorine pesticide in Typhadomingensis in Euphrates river middle of Iraq, whereas high percentage of Organochlorine compound in typhadomingensis in the site (5) for Endrin Ketone (25.058%) as compared with lowest percentage for TCMX Compound (0.385%) in the same site, While determination in site 4 the second highest percentage for Endrin Ketone compound (24.851%) followed the site 3, its percentage 24.825% then site 1, its percentage 24.794% and finally , the site 2 was recording the lowest percentage 24.557%. the results of present study demonstrate there is fluctuated difference between lowest and highest in most pesticide isolation from typhadomingensis in the site of study that recording the highest value except Endrin Ketone and Endrin aldehyde in site 2 while the lowest value in site 5. The highest concentration of compounds during seasons of year that Endrin Ketone and Endrin aldehyde were recording the highest concentration when compared with other pesticide whereas recording the highest seasonal average in site -2 for Endrin Ketone and Endrin aldehyde compounds (718.626 and 652.148)µg/kgm respectively when compared with lowest average in site-5 was reached to (309.633 and 280.860)µg/kgm


50

OP – 29 RADIATION INDUCED SYNTHESIS OF HEMA GRAFTED CHITOSAN: AN EFFICIENT ADSORBENT FOR ARSENIC (V) Vijayasri K and Alka Tiwari* Government.V.Y.T. PG Autonomous college, Durg, (Chhattishgarh) India

The removal of As (V) from aqueous solution was investigated with the grafted polymeric adsorbent (HEMA-g-chitosan) synthesized by using high energy 60Co gamma radiation as well as by conventional chemical method. The grafting parameters of grafted polymer, like radiation dose optimized. The swelling behavior of grafted polymer at different pH conditions and their kinetic studies were investigated. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the grafted polymer and the morphological structure was analyzed by Scanning Electron Microscope (SEM). The adsorption behavior of this sorbent was examined through pH, kinetics and equilibrium isotherm measurements. The removal of toxic As (V) ions was carried out by batch method using grafted sorbents synthesized by both gamma radiation and chemical grafting methods and it was observed that the adsorbent synthesized by the use of gamma radiation showed higher sorption capacity as compared to the chemically grafted polymer.

Keywords: Chitosan; HEMA; grafting; adsorption; arsenic (V); irradiation


51

OP – 30 STUDY OF URANIUM DISTRIBUTION AND ASSOCIATED WATER QUALITY PARAMETERS IN DRINKING WATER OF BHAGALPUR DISTRICT, BIHAR Subhash PD Singh*1, Palash Kumar Dutta1 and Ajay Kumar2 1

Department of Chemistry, A N College, Patna-800013

2

Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 * [email protected]

Uranium, a radioactive element is present in all matrices of environment such as rocks, soil, food, water and air. The major objective of the present investigation was to investigate the uranium concentration of groundwater being used for the drinking purposes. In the present study, 72 drinking water samples were collected from wide range of locations in Bhagalpur district (Bihar, India), using latitude-longitude as reference coordinates and analyzed for uranium using LED Fluorimeter. Seven in-situ water quality parameters such as pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Oxidation Reduction Potential (ORP), Salinity, Dissolved Oxygen (DO) and Temperature were measured using portable sensors in the field. The total hardness (TH) and total alkalinity (TA) of the water samples were measured by conventional titrimetric method. Other associated water quality parameters such as CO32-, HCO3-, NO3-, Cl-, F-, SO42- and PO43- were also analyzed using standard method. pH, EC, TDS and Salinity in the water samples were found to vary in the range of 6.7–7.6, 6.8–7.9; 534–3390 S/cm, 445–7629 S/cm; 267–1780 ppm, 221–3839 ppm; 250–1690 ppm, 220–3760 ppm, during pre- and post-monsoon respectively. The TDS level was found to be higher than the BIS acceptable limit of 500 ppm in 54.1% of water samples during pre-monsoon and in 40.3% of water samples during post-monsoon. Fluoride levels in 16.6% water samples during premonsoon and for 59.7% water samples in post-monsoon were found to be greater than BIS acceptable limit of 1. Chloride levels for 0.01% water sample in pre-monsoon and for 15.3% samples during post-monsoon were found to be greater than BIS acceptable limit of 250. Nitrate and Sulphate levels in the water samples in pre- and post-monsoon were found to be less than BIS acceptable limits of 45 and 200 ppm, respectively. Uranium levels in water were found within the safe limit varying from SDS > reetha for the single surfactant systems and in the case of mixed systems, the order was found to be TX100-reetha > CTAB-reetha > SDS-reetha. The solubilised PAH was further subjected to photocatalytic degradation using fly ash supported TiO2 as a photocatalyst. Studies on the interaction of the surfactants in the mixed t system and the effect of various reaction parameters on photo catalytic degradation are in progress.


57

OP – 35 WO3 QUANTUM DOTS DECORATED TIO2 NANOTUBES AS PHOTOCATALYST FOR THE DEGRADATION OF METHYLENEBLUE UNDER VISIBLE LIGHT ILLUMINATION M.Rebeca Sofiya Joice, T.Manovah David and P.Wilson* Department of Chemistry, Madras Christian College (Autonomous),Chennai–600059 [email protected]

A series of tungsten–titanium mixed oxides (WO3/TiO2) composite has been prepared, by coupling TiO2 nanotubes (TNT’s)synthesized via Rapid Breakdown Anodization with WO3, by means of incipient wetness procedure. Along with this, samplescontainingWO3/TiO2 nano particle (DegussaP-25) were synthesized for a comparative study. The present work is aimed at producing photocatalyst with minimized photo produced electron–hole pair recombination rate, band gap and also be activated by visible light with its effective ability for removal of organic dye methyleneblue by photo degradation process. The structure of WO3/TiO2 composite was examined by Powder X-ray diffraction (PXRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive Xray diffraction (EDX), High Resolution Transmission Electron Microscopy (HRTEM), UV-visible Diffuse Reflectance Spectroscopy(UV-DRS) and Photoluminescence (PL).The results reveal that WO3 and TiO2 were mainly present in monoclinic phase and anatase phase, respectively. In the composite, the TNT’s exist as bundle of nano tubes with its length, width and wall thickness were around5μm, 25nm and 4–5nm, and 3–4nm sized WO3 clusters were evenly dispersed overTiO2 surface without mutual aggregation. A reduced electron–hole pair recombination was observed with red shift is observed indicates the activity of the as-prepared catalyst invisible region. Moreover, during the course of the study, it was well understood that the loading concentration of WO3 over TiO2 played a vital role in defining the photo degradation activity.

Keywords: WO3/TiO2 composite, Rapid Breakdown Anodization, Incipient wetness, Photo degradation, Visible light


58

OP – 36 NOVEL GREEN REACTION MEDIUM FOR CATALYSIS- THREE PHASE MICROEMULSION Radha V. Jayaram, Saumyaranjan Mishra and Tushar S. Deore Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai-400 019

Microemulsions are thermodynamically stable dispersions of oil and water stabilized by a surfactant and sometimes with a cosurfactant. In this type of dispersions, either droplets of water are dispersed in oil or that of oil dispersed in a continuous water phase designated as water in oil (W/O) and oil in water (O/W) type. A unique bicontinuous microemulsion phase is also possible in which three liquid phases of excess water, excess oil and microemulsion coexist. The microemulsion in such cases is generally present as a middle phase. This present study is on the development of three phase microemulsions using a special class of surfactants whose counter ions are catalytic active. For this purpose, double chain cationic surfactants were synthesized and characterized by UV-Vis, IR and 1H NMR. The critical micelle concertation (cmc) of these surfactants were determined by dye micellization method. Formation of three phase microemulsion system with these double chain cationic surfactants was investigated by choosing suitable oil phase. Catalytic activity of the three phase microemulsions was investigated for selective oxidation of phenyl acetylene and styrene. Reusability of the surfactants was studied and it was found that the surfactants as well as the microemulsion system can be reused without any considerable loss in catalytic activity.


59

OP – 37 ASSESSMENT OF RURAL DRINKING WATER QUALITY USING STATISTICAL ANALYSIS & HEALTH SURVEY P. Lakshmi Ganapatia and P.V.S. Machirajub a

Department of Chemistry, National Institute of Technology, pedatadepalli-534102, A.P , India b

Department of Chemistry, Pragati Engineering College, Surampalem-533437, A.P, India [email protected] & [email protected]

The present study deals with the characterization of physico-chemical parameters, metal ions and Bacterial species of drinking water supplied from rural water supply schemes located in Devarapalle mandal head quarters in West Godavari District of Andhra Pradesh. As a part of research study, a survey on the people’s health also been carried out in the study area. An attempt has also been made to correlate the health issues of the people with the analytical data generated in respect of physicochemical parameters and bacterial species identified in the drinking water samples. The analytical results revealed that the water are with higher levels of EC, TH, TA, Calcium, Magnesium and the Microbial analysis revealed the presence of bacterial species like Enterobacter and Klebsiella in water indicating the bacterial contamination of water. High coefficient of variance indicates variability of physico-chemical parameters concentrations in drinking water. The descriptive statistical analysis was done beside Pearson correlation. In this statistical study, an appreciable significant positive correlation was found for TDS with TH; TDS with TH, Na+, F-, SO42and Cl- ; TH with K+ and Na+ ; Na+ with F-and Cl-. . The waters are to be treated by ultra and nano filtration techniques to reduce the total dissolved solids and disinfection and sterilization methods are to be applied for removing bacterial contamination before use of these waters for drinking and domestic purposes.

Keywords: Drinking water, Metal ion, Statistical analysis, Physico-chemical parameter, Biological contamination


60

OP – 38 MICROBIAL,PHYSICOCHEMICAL ANALYSIS OF SAGO INDUSTRY EFFLUENT AND NEARBY GROUND WATERS TO ASSESS THEIR IMPACTS OF EFFLUENT ON GROUND WATERS D.Rama Rao1, V.Siddaiah2 and P.V.S.Machiraju3 1&2

Department of Chemistry, Andhra University, Visakhapatnam-530003,AP Departments of Chemistry Pragati Engineering College, Surampalem-533437, AP [email protected]

3

Water sources near Industrial areas are generally exposed to pollution due to the effluents generated from the industrial units. Sago industry is a small scale industry and also a seasonal industry operating from September to March in East Godavari District. The washed residue of sago when released in to the nearby streams along with waste water can cause serious environmental problems. The present study is aimed to characterize the effluent and ground water for physicochemical parameters viz., pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS),Total Hardness(TH), Total Alkalinity(TA), Na+, K+, Ca2+, Mg2+,Chloride,Sulphate,Nitrate and Phosphate around the industry to assess the impact of effluent on ground water. The irrigation parameters like Percent Sodium (%Na), Sodium Adsorption Ratio (SAR), Residual Sodium Carbonate (RSC), Kellys’s Ratio (KR) and Magnesium hazard MH are determined to assess the suitability of waters for irrigation purposes.Metal ions viz.,Li,Be,Al,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Se,Rb, Sr, Ag, Cd,Cs,Ba and Pb are characterized to assess the metal ion contamination .The higher values of EC,TDS,TA,Na, Chloride indicate the contamination of ground waters in the study area. Higher values of Magnesium Hardness indicate the (MH)of water which in turn deplete the quality of soil and consequently the crop yield will be reduced, if the waters are used for irrigation purposes. The lower metal ion concentrations indicate that the waters are free from metal toxicity. The water samples are also tested for MPN count and analyzed for identifying the bacterial species. Presence of pathogenic bacterial species viz., E.Coli ,Enterobacter, Klebsiella and Pseudomonas indicate the bacterial contamination of waters and the waters can cause concern on human health, if consumed for drinking purposes. The waters are to be treated properly to protect the health of the public residing in the nearby habitations of the sago industry who consume these waters for drinking and domestic purposes. Key words: Sago effluent, ground water, bacteria, metal ion, parameter


61

OP – 39 DETERMINATION OF FLUORIDE CONTENT IN SOUTHERN PART OF NALGONDA DISTRICT (TELANGANA, INDIA): Sunder Kumar Kolli*1, Srisailam Gogula2, Mohammed Vaseem2 and David Wilson Narisinga2 1*

Department of Chemistry, Annamacharya Institute of Technology & Sciences, Hyderabad 2

Department of Chemistry, Govt. City College, Hyderabad, Telangana-500008 [email protected]

Water is an essential natural resource for sustaining life; ground water is an important resource for drinking, domestic and agricultural use. Water quality of available ground water is depending upon the nature of the soil and environment (pollutants). Harmful ingredients containing water is not good to use for drinking and domestic purpose. Natural water gives good quality of minerals, as the ground contamination arises it reduces water quality and gives abnormal quantities of minerals such as high levels of fluoride. Several regions of India, groundwater was contaminated with Fluoride beyond permissible limit of 1.5 mg/L (BIS Standards). Fluoride is found to be an important trace element playing a key role in the dental and skeletal formation in humans, it is generally believed that including human being consume fluoride largely from drinking water sources and the total daily intake of fluoride by individuals from water and other sources varies from place to place depending on the amount of fluoride availability in water. In the present study, fluoride levels were estimated in different areas Devarakonda, Chandampata and Dindi (Gundlapally) Mandals of Nalgonda District, Telangana, India. Fluoride levels in these areas ranged from 0.32 mg/L to 2.43 mg/L with a mean value 1.37 mg/L. Highest levels of fluoride was seen in Tatikole, Kondabeemanapally, Chandampeta, Mududandla, Cherkupally and Reddipalem of Devarakonda, Chandampata and Dindi Mandals respectively.

Keywords: Natural water, Fluoride, drinking water, Dindi and BIS standards.


62

OP – 40 STUDY ON THE EFFECT OFALCCOFINE IN COCONUT SHELL CONCRETE AND BONDING USING INVERTED METALLURGIC MICROSCOPE V.R.Prasath Kumar1 and K.Gunasekaran2 *

Department of Civil Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India- 603203 *[email protected],[email protected]

The use of natural resources in concrete production makes the environmental fret. One of the possible solution to save the natural resources is to use of different generated solid waste. Coconut shell is one of the agriculture waste which is been tried recently as coarse aggregate in the production of concrete. The emission of carbon dioxide (CO2) due to cement production is also one of the cause for global warming. Hence, in this study alccofine is used as partial replacement for cement. The alccofine was replaced from 5 to 25% in the increment of 5%both in coconut shell and conventional concrete for the target strength of M25. Compressive strength of all these mixes were conducted at 3, 7, 28, 56, 90, 180 and 365 days for optimization percentage of alccofine. It was observed that 10% replacement of alccofine gives higher strength comparing to other percentage level. However, 20% replacement had also achieved the targeted compressive strength, which confirms the better percentage level to replace cement and confirms the optimized percentage level. The other properties say, split tensile, flexural and impact strength were done using the optimized level for 3, 7 and 28 days of curing period. In addition, the microstructure study and phase composition of the formed hydrates were examined through X-Ray diffraction (XRD) and scanning electron microscope (SEM). The inverted metallurgical microscope (IMM) was used to inspect the bonding layer thickness between aggregates and cement mortar, which confirms and the bonding layer is inversely proportional to its age.

Keywords: Coconut Shell concrete, Alccofine, Optimization, Properties, X-Ray diffraction (XRD), Scanning Electron Microscope (SEM), Inverted Metallurgic Microscope (IMM) .


63

OP – 41 SYNTHESIS OF TAPE-LIKE ZINC OXIDE NANOSTRUCTURES FOR USE AS CATALYST IN ORGANIC REACTIONS Md. Harunar Rashid Department of Chemistry, Rajiv Gandhi University, Rono Hills, Doimukh 791 112,Arunachal Pradesh, India [email protected]

Nanostructures of metal oxide such as ZnO exhibit interesting size and shape-dependent optoelectronic and physico-chemical properties. As a result, ZnO nanostructures find potential applications in different fields such solar cells, sensors, catalysis, photocatalysis etc. which motivated the researchers to develop the simpler and inexpensive techniques to produce size and shape tunable metal oxide nanostructures for such technological applications. The synthesis of ZnO nanostructures using green chemical method is always eco-friendly and attractive. The current study focuses on the generation of tape-like ZnO nanostructures of different sizes by alkaline hydrolysis of metal salts using bio-active molecules present in plant extract as additives. Microscopic results indicated that varying the concentration of additive or the metal salts, size of ZnO nanostructures could be tuned. In the absence of additive, mostly aggregated larger sized tape-like structures are formed that confirmed the key role of bio-additives played during the growth of ZnO nanostructures. These ZnO nanostructures are crystalline as confirmed from X-ray diffraction and electron diffraction study. The applicability of the ZnO nanostructures in catalysis was tested in ipso-hydroxylation reaction under ambient conditions. Further, these nanostructures are reusable upto several batches of reaction without much losing their morphology.


64

OP – 42 NANO-Gd2WO6 INCORPORATED ZnO / BENTONITE COMPOSITE FOR THE PHOTO CATALYTIC DEGRADATION OF CIPROFLOXACIN K. Selvakumar1, A. Raja2, M. Arunpandian1, M. Thiruppathi1, P. Sami3 and M. Swaminathan1* 1

Nanomaterials Laboratory, Department of Chemistry, International Research Centre, Kalasalingam Academy of

Research and Education (Deemed to be University),Krishnankoil – 626126, Tamilnadu, India. Multifunctional Materials Laboratory, Department of Physics, International Research Centre, Kalasalingam Academy of

2

3

Research and Education (Deemed to be University), Krishnankoil – 626126, Tamilnadu, India. Department of Chemistry, V.H.N. Senthikumara Nadar College (Autonomous), Virudhunagar-626 001, Tamilnadu,India.

*[email protected]

The Gd2WO6 / ZnO / bentonite (GWZB) nanocomposite was prepared by hydrothermal process and characterized. The DRS-UV spectrum shows the band gap decrease by the addition of bentonite. Photoluminescence spectra of GWZ and GWZB reveals that emission intensity of GWZ photocatalyst is higher than the GWZB photocatalyst. Therefore photocatalytic activity of GWZB is higher than GWZ. From SEM and EDX analysis, it is found that the entire catalyst surface has clustered microsponge-like structure with more number of cavities. Further, the nano composite was characterized by FT-IR, XPS and TEM analysis. The photocatalytic activity was studied in the degradation of ciprofloxacin in aqueous medium using visible light. Under irradiation for 60 min, the photodegradation efficiency of CF over 20 mg of GWZB is as high as 97.9 % .Optimum parameters such as catalyst dosage, CF concentration, and pH have been determined. The catalyst was found to be stable and reusable.


65

OP – 43 REGIONAL ALGORITHM DEVELOPMENT FOR CHLOROPHYLL-A AND SUSPENDED SEDIMENT CONCENTRATION USING REMOTE SENSING AND FIELD DATA IN MUTHUPET LAGOON, TAMIL NADU, INDIA R. Nagalaskhmi1, P.M. Rameshwaran2, G.Kokila priya2 G.Hemalatha2 Justus Reymond1 and G.Premkumar1 1 Civil Engineering Department, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India 2 Civil Engineering Department, SRM Institute of science and Technology, Ramapuram, Tamil Nadu, India

In the ocean fishery potential depends on two primary water quality parameters such as chlorophyll-a and suspended sediment concentration. High concentration of chlorophyll indicates nutrients contents have high in any types of water bodies and is not good for its ecosystem. Analysis of water quality parameters are very difficult in in-situ measurement and have high expensive but advanced remote sensing technology can do with cost effective manner and used for regular monitoring. The main objective of this study has developed bio-optical algorithm in Muthupet lagoon, Vedaranniyam located in Nagapattinam district of Tamil Nadu, summer and monsoon season using IRS-P4 OCM sensor data and in-situ measurement for this the water samples have been collected in twelve locations when satellite overpass.

Keywords: lagoon, OCM sensor, chlorophyll-a, suspended sediments, regular monitoring; biooptical algorithm


66

OP – 44 ANTIMICROBIAL STUDIES OF SOL-GEL ROUTE SYNTHESISED IRON DOPED CeO2 NANOPARTICLES R.Kavitha1 and Revathy Rajagopal1* 1*

Department of Chemistry, Stella Maris College (Autonomous), Chennai- 600086.

Cerium oxide (CeO2) and iron oxide are a technologically important material due to their properties and applications in several areas that range from engineering to biological sciences. At lower temperatures these oxides show antimicrobial activity against several bacteria destroying micro-organisms cell walls by probable action of reactive oxygen species. Hence a combination of these oxides as in iron doped CeO2 is expected to show good antimicrobial activity. In this work, iron doped cerium oxide nanoparticles were synthesized by the citrate-nitrate sol-gel method.

The

reduction in iron doped CeO2band gap energy with incremental levels of Fe loading maintained the nanoparticle crystalline structure in spite of homogeneous Fedistribution (demonstrated by XRD, SEM-DEAX, Solid UV-V and IR ). Their structural and morphological characteristics were studied by X-ray diffraction (XRD), EDAX-SEM, infrared spectroscopy (IR) and ultra-violet spectroscopic techniques. The X-ray powder data of the synthesised oxides matched well with that reported in literature and is found to have size less than 100nm.Photochemical studies showed that band gap energy was reciprocally tuned proportional to the Fe content. Antibacterial activity increased with ROS production with a decrease in band gap energy of oxide. Thesefindings demonstrate the importance of band gap energy inthe anti-bacterialactivity of synthesised oxide.


67

OP – 45 STRONTIUM INCORPORATED HYDROXY APATITE/REDUCED GRAPHENE OXIDE NANOCOMPOSITE FOR POTENTIAL BIOMEDICAL APPLICATION Keerthi Satheesh, Nimmy Edwin and P.Wilson* Department of Chemistry, Madras Christian College (Autonomous), Chennai-600059, Tamilnadu, India. [email protected]

Hydroxyapatite (HA) /reduced grapheme oxide (rGO) composites with 0, 50 and 100 mol % of strontium in HA and 1 wt% of GO were synthesized through a green hydrothermal reduction method. Strontium incorporation onto the crystal structure of HA in the synthesized composites has been substantiated using XRD and FTIR. The coordination between hydroxyl apatite and reduced grapheme oxide was established from P-31NMR studies. HRTEM studies point out the contribution of grapheme oxide in directing the nucleation points resulting in dispersed hydroxyl apatite. The in vitro cytocompatibility of the SHA/rGO composites (SHAG) has been evaluated using cell proliferation tests with MG-63 cells, under a wider range of concentrations (1000-7.8μg/mL). This work also discusses a possible role of surface and pore characteristics on the in vitro cytocompatibility. Strontium rich samples having a combination of mesopores and macropores find varied biomedical applications. These results suggest that the SHAG composites will be a promising material for biomedical applications.

Keywords: Strontium, Hydroxyapatite, Reduced Graphene oxide, hydrothermal reduction, Cytocompatibility.


68

OP – 46 THIOL CAPPED CdTe QUANTUM DOT BASED FLUORESCENCE NANO-SENSOR FOR SENSITIVE DETECTION OF COBALT (II) Lakshita Dewangan and Manmohan L. Satnami* School of Studies in Chemistry, Pt. RavishankarShukla University, Raipur (C. G.), India- 492010 [email protected]

Synthesis of CdTe quantum dots capped with different thiol based biological molecules and drugs,

such

as

cysteine(I),

glutathione(II),

thioglycolic

acid(III),

sodium

2-

mercaptoethanesulphonate (mesna)(IV) and Sodium (N- mercaptopropionyl) glycine(V) are becoming progressively more important due to the growing body of knowledge about their essential role in numerous biological pathways.Cobalt (Co2+) is a hazardous elementcan cause asthma attacks with shortness of breath, wheezing, cough, chest tightness. Cobalt may affect the heart, thyroid, liver and kidney etc. Herein, we reported L-Cysteine capped CdTe Quantum dot based optical sensor for the fluorometric detection of cobalt (II) ion. The method is based on fluorescence quenching of quantum dot with the addition of cobalt ion that caused the reduction in fluorescence intensity due to strong interaction between Co2+ and L-Cysteine to form Co(Cys)2. Synthesized Quantum dot were characterised by UV Chemilumination, UV-Visible spectra, fluorescence measurements, and TEM. The feasibility of the sensor has been analyzed by checking the interference of common metal ions available in real water sample such as K+ , Zn2+ , Na+ , Pb2+ , Fe3+ , Cu2+ , Mn2+ . Keywords : CdTe QDs. Detection of Co2+ . Fluorescence Nano-Sensor.


69

OP – 47 INFLUENCE OF IRON NANO CO-POLYMER CATALYSTS ON THE LIQUID HYDROCARBONS PRODUCTION OF FISCHER TROPSCH REACTION Abdulqadier Hussien Al khazraji Department of Chemistry, College of Education for Pure Science, University of Diyala, Iraq. [email protected]

In this paper the synthesized composites were used in theFischer Tropsch reaction which compared the catalytic activity of catalysts based on Co-polymer (COP) such Styrene Butadiene Rubber (SBR)) and Polyethylene terephthalate (PET)) with catalysts. The COPS were supported within polypropylene (PP) in the system nano Fe – Paraffin-polymer. The behavior of Co-polymers gave significant effects in the creation of nano catalysts by stabilizing the nanoparticles, and producing new active sites for synthesized hydrocarbons from CO and H2as sources of energy. Catalytic materials shows sensitivity and selectivity in the Fischer-Tropsch process with three phase slurry reactors. The greatest conversion of CO was obtained in 66%, which forming hydrocarbons liquid reach to 60g/m3for catalysts copolymer(SBR) , whilst using catalyst with PP reduce the conversion of CO to 50% which also forming 38g/m3ofhydrocarbons. The iron nano particles were characterized by AFM technique and XRD in the polymer-paraffin matrix.

Keywords: Fischer–Tropsch (FT), three phase, slurry reactor, polymers.


70

OP – 48 WASTE TO WEALTH CONVERSION USING GREEN NANOTECHNOLOGY Banti Ganguly Department of Chemistry, Bir Bikram Memorial College, Agartala, Tripura, India

Green Nanotechnology has been recognised as one of the powerful weapon for invading science into technology by clean, organic and eco-friendly manner. Green waste can be converted into inexpensive waste using green nanotechnology. Silver nanoparticles have been synthesized using waste material. The antifungal and antibacterial effects of such nanoparticles were studied in vitro. The biosynthesis of metal nanoparticles has said to in consistent with the principles of green chemistry. In this article, the fast and simple synthesis of silver nanoparticles was performed using a waste material. The antibacterial and antifungal were determined. The cytotoxicity effect of the Green synthesized nanoparticles is discussed.

Keywords: Waste material, Green Nanoparticles, antifungal, antibacterial


71

OP – 49 HYDROPHILIC ‘Co-SPINEL/AMINO ACID -FUNCTIONALIZED GRAPHENE’ FOR ELECTROCATALYTIC REDUCTION OF METRONIDAZOLE Manorama Singh Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Bilaspur (C.G.)-495009

Till date, numerous chemical modifications of graphene are reported in literature, which not only ruptures the graphene-sheet (unsuitable for electro-/chemical catalysis) but also utilize huge amount of hazardous chemicalsnot favorable for environment. Alternatively, functionalization of graphene with different naturally occurring substances through bio-covalent interactions is a great dimension in this area to develop ‘bio-covalent modified graphene’ (BCMG) in consonance with sustainable chemistry program. ‘Amino acids’ (or zwitterions) be full of a quite number of amine (–NH2) and carboxylic (– COOH) groups both and are vital organic constituents. Furthermore, using amino acids for the functionalization of graphene has received a significant attention owing to their unique contribution in peeling off functionalized graphene sheets layer by layer.Threonine (Thr), an immune enhancing essential nutrient), has ample active functional groups (-NH2, -COOH, -OH) to functionalize the surface of graphene and helps graphene sheets to be dispersible in aqueous medium. These unique properties of Threonine triggered our interest to functionalize the graphene sheet with threonine followed by Co-spinel. Moreover, functionalization of graphene with Threonine and Co-spinel was confirmed by UV-Vis spectra, FTIR, XRD, Raman, High resolution Transmission electron microscopy (HRTEM), Scanning electron microscopy (SEM) and Cyclic voltammetry.Also, the Co3O4/Thr-G was immobilized in Nafion on glassy carbon electrode for drug sensing and it was gratifying to report that this prepared sensing probe worked successfully.The determination of a drug ‘Metronidazole’ was recorded with Differential pulse voltammetry (DPV). Furthermore, the synthesized bio-material reduces -NO2 group into -NH2efficiently towards drug sensing as an electrochemical probe.Selectivity test was performed by addition of 100-fold concentrations of some interfering substances such as glucose, l-cystine, ascorbic acid and caffeine. The detection limit was found to be 3.9 nM in the linear range of 2.5 µM to 240 µM in 0.1 M pH 6.0 at ambient reaction conditions.


72

OP – 50 TUNING CO-OPERATIVE EFFECT OF TITANATE NANOTUBE SURFACE FUNCTIONALIZED ORGANOCATALYST; SYNTHESIS OF 1,4-BIS((1H-INDOL-3YL)(MORPHOLINO)METHYL)BENZENE VIA MANNICH TYPE REACTION Muthusamy Vijayachandrasekar*a and M.Sivakamia 1

Department of Chemistry, SRMIST, Faculty of Engineering and Technology, Kattankulathur-603203, Tamil Nadu, India [email protected]

A bifunctional ionic liquid immobilized mesoporous TNT has been developed by reacting organo functionalized Im-TNT-Im via a post grafting method. The heterogeneous catalyst was employed for the first time for the synthesis of 1,4-bis((1H-indol-3-yl)(morpholino)methyl)benzene at mild condition yields excellently in short reaction time. The synthesized catalysts were meticulously characterized by FTIR, solid state 1H &

13

C NMR, single crystal XRD and Mass spectrum .This

eminent organo functionalized catalyst was further characterized by low angle XRD, nitrogen sorption, SEM, HRTEM for their morphogically assets. Further the thermal stability and number of active sites were analysed by TGA. The advantage of this methodology is operationally simple and the desired products obtained from the reaction mixture involves without purification addition to their good functional group tolerance with broad substrate scope.The substituent effects were governed by the Hammett equation by repeated controlled experiments and GC methods. the Hammett study involved a series of indole resulted in a negative slope and revealed a positive charge in the transition state. Notably, an interface catalyst under tightening environmental legislation procedure has been reused up to seven times and maintains high catalytic activity.

Key words: Synergic Effects, Ordered MesoporousBifunctional Im-TNT-Tm, Recyclable Catalyst, Hammett Kinetic Study and Physico-chemical characterisation of Im-TNT-Im.


73

OP – 51 rGO- BiVO4-ZnO NANOCOMPOSITE FOR ENHANCED PHOTOCATALYTIC DEGRADATION OF CIPROFLOXACIN UNDER VISIBLE LIGHT A.Raja1, K. Selvakumar2, S. Asath Bahadur1* and M. Swaminathan2* 1

Multifunctional Materials Laboratory, Department of Physics, International Research Centre, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil – 626126, Tamilnadu, India. 2

Nanomaterials Laboratory, Department of Chemistry, International Research Centre, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil – 626126, Tamilnadu, India. [email protected], [email protected]

A highly effective rGO-BiVO4-ZnO photocatalyst was synthesied by hydrothermal method and characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy, high resolution transmission electron microscopy (HRTEM), X-ray photo electron microscopy (XPS), photoluminescence spectroscopy (PL), Fourier transform Raman spectroscopy (FT-Raman), UV-Vis diffuse reflectance spectroscopy. The powder XRD analysis confirmed presence of hexagonal wurtzite structure of ZnO. HR-SEM image shows cubic structure of ZnO and rod like structure of BiVO4 .HR-TEM image reveals the pristine structure of BiVO4, and cubic structure of ZnO. The rGO-BiVO4-ZnO nanocomposite exhibits the highest ciprofloxacin degradation (98%) in 60 min, which is greater than that of ZnO and BiVO 4-ZnO under visible light. rGO-BiVO4-ZnO is stable and reusable for ciprofloxacin degradation. A possible photocatalytic mechanism of rGO-BiVO4-ZnO nanocomposite for the enhanced degradation of ciprofloxacin under visible light irradiation is proposed.


74

OP – 52 SYNTHESIS, CHARACTERIZATION AND CATECHOLASE ACTIVITY OF COBALT (II) COMPLEX WITH PHENOL BASED N2O2 CHELATING LIGAND Debdas Mandal* Department of Chemistry, Sidho- Kanho- Birsha University, Purulia, W.B. 723104 [email protected]

A wide variety of cobalt(II) complexes are known to bind dioxygen more or less reversibly and are therefore frequently studied as model compounds for natural oxygen carriers and for O 2 storage.1In the last decade, significant attention has been focused on these synthetic oxygen transport systems. The aim is that these carriers mimic the biological systems in fixation, release, storage and activation of dioxygen.2-3 These complexes have been used as models to understand how the proteins behave. Two mononuclear Co(II) complexes have been synthesised using H2L (N,N’-dimethyl-N,N’bi(2-hydroxy-3,5-dichlorobenzyl)-ethylenediamine) as a facially coordinating sterically constrained N2O2 ligand. Both cobalt(II) complexes [Co(H2L)(PhCOO)2] 1. and [Co(H2L)(C8H4O4Na)2] 2. have been characterized by various spectroscopic techniques. Complex 1 catalyzes the oxidation of 3,5-ditert-butylcatechol (3,5-DTBC) to 3,5-di-tert-butylbenzoquinone (3,5-DTBQ) with molecular oxygen in methanol at 25°C.

Keywords : Co (II) complex ; Synthesis ; Characterization ; Properties; Catecholase activity

.


75

OP – 53 COMPARATIVE STUDY FOR REMOVAL OF Zn (II) IONS FROM AQUEOUS SOLUTION BY USING PRETREATED LOW COST ADSORBENTS Savita Rani 1,2,3, Seema Sharma4 and Manjeet Bansal5 1

Department of YCOE, Punjabi University Guru Kashi Campus, Talwandi Sabo, Punjab, India. 2

Research Scholar, I.K.G. Punjab Technical University, Jalandhar, Punjab, India. Applied Chemistry and Polymer Science Laboratory, Giani Zail Singh Campus College of Engineering and

3

4

Technology,MRSPTU, Bathinda, Punjab, India. Department of Applied Chemistry, Giani Zail Singh Campus College of Engineering and Technology, MRSPTU,

5

Bathinda, Punjab, India. Department of Civil Engineering, Giani Zail Singh Campus College of Engineering and Technology, MRSPTU, Bathinda, Punjab, India. [email protected]

Water bodies are increasingly being polluted due to discharge of untreated water by industries globally. Heavy metals are among the major pollutants of waste water. Of these, zinc is the heavy metal used in many industries mainly smelting, refining, galvanization, batteries, paint, polymer stabilizers, fertilizers and pesticides etc. Being non-biodegradable, it gets bioaccumulated in human beings through food chain. It has serious health impacts not only on humans but plants and other organisms also. Intake of Zn causes depression, lethargy and increased thirst. Excess amount of Zn leads to zinc toxicity resulting in vomiting, diarrhoea, kidney and liver damage. Various methods have been employed for removal of Zn (II) like coagulation, membrane filtration, precipitation, ionexchange and adsorption. Of these methods, adsorption using biosorbents has been observed as costeffective method for the treatment of water containing Zn (II) ions. Sawdust, a timber industry waste is found to be low cost and environment-friendly adsorbent for treatment of waste water containing heavy metals. The present study is comparison of adsorption efficiency of boiled and formaldehyde treated sawdust for removal of Zn (II) ions from aqueous solution. The study involves effect of variation of various parameters on the removal efficiency of adsorbents for Zn(II) ions from aqueous solution for both the adsorbents in batch mode.

Keywords- Zn (II), Sawdust, adsorption, adsorption efficiency.


76

OP – 54 DUAL EXTRACTION AND DETERMINATION OF LEAD IN GASOLINE Quasim Koya Technical Institute Koya, Erbil, Iraq

In this research article, lead (TEL and TML) was extracted and then, determined from gasoline by dual extraction apparatus. Gasoline, gas oil and iodine monochloride solution in acidic media used for extraction. The extraction was accomplished in 45 minutes in acidity of PH 6, followed by titration with EDTA solution. The results showed various lead content in commercial gasoline of (0.01822 – 0.29623) gm/L, TEL of (0.01875 – 0.27981) gm/L and TML of (0.01099 – 0.18876) gm/L. The research octane number (RON), motor octane number (MON) and anti-knocking index (AKI) for all samples were estimated.


77

OP – 55 CONCEPT PROGRESSION IN LEARNING SCIENCE AND MATHS VIA NON CONVENTIONAL PEDAGOGY BY STUDENTS IN A RURAL SETTING: A CRITICAL ASSESSMENT Smriti Mukherjee, DavidS.M, R.VijaySolomon, D.Reuben Jonathan and P.Wilson* Department of Chemistry, Madras Christian College(Autonomous),Chennai–600059 [email protected]

Currency for the 21st century has been described in terms of education and innovation and to be specific, science education of the country sows the seeds for the future economy of the country. This can be realized through popularizing Science by setting out from school through novel pedagogical modus operandi so as to appeal to even students of rural context. The Service Learning Programme (SLP) is a yearly initiative of the Madras Christian College (MCC) that aims to foster science communication to school children through Science camp. While the program aims to alleviate the aversion to Science in school children with an array of non-conventional methods of teaching, it prompts leadership qualities and activates career planning in the teaching volunteers. A group of 36 student volunteers and 5Staff Members of MCC held a four-day camp in the Kings and Queens Residential School, Arakkonam, Tamilnadu. An empirical investigation of the prior and post knowledge of 120 Students belonging to Classes 8th – 10th in Science and Mathematics has been made using questionnaires in each subject based on modified Bloom’s Taxonomy by offering instructions on the same domains using non-conventional pedagogy in small groups. This paper endeavours a quantitative and critical evaluation of the significant rise in overall performance of the students with a special reference to the augmented concept progression of the boys to that of the girls as a function of non conventional pedagogy, character traits of the mentor and in formal setting.

Keywords: Non-conventional pedagogy, concept progression, character traits of mentor, Bloom’s taxonomy, Service learning.


78

OP – 56 SYNTHESIS AND DIAGNOSIS OF HETERO CYCLIC COMPOUNDS PYRIMIDINE AND OXAZEPINE FROM ALCLOFENAC DRUG WITH EVALUATING OF ITS BIOLOGICAL ACTIVITY Fatimah Ali Husssein, Hala Shkyiar Lihimes and Luma Ahamed Mohammed Ali University of Babylon, College of Science, Chemistry Department, Hilla, Iraq [email protected]

This work comprises preparation of the derivative of pyrimidine by three steps and the using of well-known reaction called Biginelli reaction in the last step Compound (A3) was prepared by in three successive steps. One step: Formation compounds (A1a), (A1b) and (B) Using coupling reagent by using N,N’-dicyclohexylcarbodiimide (DCC) and 1-hydroxy benzotriazole (HOBt)/ The second step:

Compounds was prepared (A2a,A2b) comprises (-CH3) group oxidation in the

compound (A1a) and (A1b) and converting it into aldehyde group using oxidizing agent (SiO2). Third step: Compound (A3a,A3b)was prepared by classical method calling Biginelli method in which involves cyclo condensation of the compound (A2a) ethylacetoacetate and urea. Then it was prepared of the derivative of N-Arylhydrazine and oxazepine to form compound (a3a,A3b) then reacted with hydrazine hydrate 99% in ethanol to yield hydrazide derivative compound (a4a,A4b). The Schiff base (A5a,A5b) prepared from the corresponding aryl aldehydes. Oxazepine derivatives (A6a,A6b) were synthesized by reaction of compound spectroscopic methods, H1NMR and FT-IR and C,H, N analysis. Keywords: Pyrimidine, Hydrazones, hyrazide, Biginelli


79

OP – 57 ASSESSMENT OF SURFACE AND SUBSURFACE WATER IN AND AROUND ST.THOMAS MOUNT BLOCK BY WATER QUALITY INDEX R.Kokila Priya, G.Hemalatha and P.M. Rameshwaran Department of Civil, SRM Institute of Science and Technology, Ramapuram, Chennai- 89. Tamil nadu

In developing countries like India rapid industrialization result in the voluminous production of waste. Most often due to improper disposal practices especially in India causes serious environmental degradation viz, ground water contamination, modification of soil properties etc. Ground water is an important source for drinking and irrigation purpose. Increasing problems have arisen due to ground water contamination. But the ultimate fate of the pollutant and its impact on the environment are directly dependent on the soil type.St.Thomas mount block in Kancheepuram District is known for its tanning operations. The disposal of tannery effluents in those blocks have contaminated not only the ground water but also affected the soil behaviour. If this scenario persists, the ground water will become totally unfit for drinking and soil bonding will become too weak to lay foundation for civil structure. The present study monitors the ground water quality which relates to land use/ land cover for study area. The suitability of water for drinking purpose was found using Water quality index (WQI). Finally WQI map was prepared using spatial interpolation techniques. The water quality index map is interpolated with respect to the Land use land cover. The water quality map shows that, the ground water in the study area is fall into very poor category, so it is unfit for drinking purpose.


80

OP – 58 CRUSHED STEEL SLAG AS A REPLACEMENT OF RIVER SAND M. Jothilingam1, R. Premalatha2, Nirmal Manickam3 and Abins Aziz4 1,4

Assistant Professors, Dept. of Civil Engg., SRMIST, Ramapuram, Chennai – 89

2,3

PG & UG students, Dept. of Civil Engg., SRMIST, Ramapuram, Chennai – 89

This research work aims at the studying the properties of concrete by replacing the natural river sand by the industrial waste material, crushed steel slag from the steel industry. The physical and chemical properties of crushed steel slag were studied and from the experimental investigation results, it is observed that, it is found suitable for alternate to river sand. The test specimens were prepared and laboratory tests were conducted for mechanical and durability properties. The concrete is tested for its basic strength properties and durability properties. The results of the concrete prepared with crushed steel slag are comparable with the conventional concrete based on river sand.

Keywords: Concrete, Steel slag, Compressive strength, Flexural strength, Durability


81

OP – 59 AN EXPERIMENTAL INVESTIGATION ON PARTIAL REPLACEMENT OF SAND BY CERAMIC GRAINS IN COCONUT SHELL CONCRETE S.Prakash chandar, K.Gunasekaran, V.Kalpana priya and N.Ganapathyramasamy Department of Civil, SRM Institute of Science and Technology, Kattankulathur, Chennai. [email protected]

In this work to find some alternative replacement for fine aggregate to save natural resource. The fine aggregate is partially replaced by ceramic waste in various portion (10%, 20%, 30%, 40% and 50%) in coconut shell concrete. In this developing world, the alternation of construction materials has become a necessity due to the increasing demand for natural construction materials for rapid utilization. The sources of natural sand and aggregate are reducing day by day and these are becoming consequently costlier as their demand also increases every day. Meanwhile, industrial wastes from manufacturing units are also increasing. Thus with the aim of utilization of waste to minimize the construction cost. For example, ceramic wastes are waste products which are directly released into the environmental and can cause pollution, so using such materials as a substitute in fine aggregate can also reduce the disposal problems associated with these materials. In this study we will be finding out the compression strength test, split tensile strength, flexural strength and Failure analysis of RCC beams after 3 days, 7 days and 28 days on replacement of river sand by ceramic waste in the coconut shell concrete.

Keywords: SEM analysis, XRD analysis, coconut shell, ceramic waste, compression strength, split tensile strength, flexural strength


82

OP – 60 MECHANICAL AND DURABILITY PROPERTIES OF DOLACHAR AS A REPLACEMENT FOR COARSE AGGREGATE M. Jothilingam1, N. Raja kumar2, Sriram Sudhan3 and Abins Aziz4 1,4

Assistant Professors, Dept. of Civil Engg., SRMIST, Ramapuram, Chennai – 89 PG & UG students, Dept. of Civil Engg., SRMIST, Ramapuram, Chennai – 89

2,3

This research aims at replacing the coarse aggregate with steel industrial waste, Dolachar for the production of concrete. Dolachar is obtained from sponge iron plant size varying from 6 mm to 20mm. The iron ore and coal is mixed in proportion and burnt at a temperature of more than 1200° C to get around of 80% of the cast iron and 20 % of waste combined with Dolachar and burnt ash. It consists of quartz, Free lime, Ferrous particles, and Calcium or Magnesium oxide. Sponge iron industry produces about 1050 MT of solid waste/dust daily. After studying the physical and chemical properties of Dolachar, it is found suitable to consider for alternate to conventional coarse aggregate. The concrete specimens were tested for mechanical properties and durability properties like RCPT and the results are comparable with reference concrete.

Keywords: Concrete, Dolochar, Compressive strength, Durability


83

OP – 61 KINETICS AND SETTLING STUDIES USING NATURAL COAGULANT ON SEWAGE WATER TREATMENT Ritika Kediaa and S.Vishali* Department of Chemical Engineering, SRMIST, Kattankulathur, India, 603 203 *

[email protected]

This study was focused on the evaluation of the settling behavior of flocs formed during the treatment of sewage water using a green coagulant Strychnos potatorum. The batch mode coagulation –flocculation studies were carried out in the conventional jar test apparatus with six stirrer arrangement and base floc illuminator. The effect of experimental parameters such as eluent type, eluent concentration, coagulant dose, coagulant-eluate volume and initial effluent pH were examined. The proposed case to treat a litre of sewage water was 800 mL of eluate made from 1 % (wt/vol) of Strychnos potatorum and 4 N NaCl, at its own initial pH (6.8-7.4). The outcome was 93.67% (colour) and 92.34% (turbidity). The presence of protein, an active component, responsible for coagulation was confirmed by SDS-page method. The results were contrasted with chemical coagulant alum. The kinetic studies suggested the suitability of the natural coagulant for the pollutant removal, heterogeneity behavior and the non-occurrence of chemisorption reaction. The final sludge volume produced was 35 mL/L (S. potatorum) and 430 ml/L (alum). The sludge volume index (SVI) was found to be 64.85 mL/g which indicated that the sludge has very good settling properties. The dry weight of the sludge was found to be 4.17 g. For S.potatorum the hindered settling velocity was found to be 0.0032 m/min. Based on the higher removal efficiency and lower sludge volume, and being an eco-friendly, biodegradable, low cost natural coagulant, S. potatorum could act as a better substitute for chemical coagulant in the sewage water treatment.

Keywords: Sewage water, S. potatorum, Coagulation, settling, kinetics


84

OP – 62 EFFECTS OF ELECTRONIC WASTE IN MANUFACTURING OF BUILDING MASONRY AND PAVING COMPONENTS S.Prakash chandar, N.Nasurudeen Sha and S.Manikandaprabhu Department of Civil, SRM Institute of Science and Technology, Kattankulathur, Chennai. [email protected]

This study focus to reduce the usage of cement in the construction projects. During the production of cement, the CO2 emission is maximum and polluting the environment in huge. For to control this problem, the Electronic wastes collected from Electronic waste plant is used to replacement for cement in the construction of building components. In this work, the impact of Electronic waste on compressive strength of building parts were studied. The compressive strength parameter was performed on the preparation of Interlocking block, Cement bricks and Solid blocks with various mix proportions of cement replaced by 10% and 20% of Electronic waste. From the compressive strength test results of electronic waste replaced specimens are compared with control mix sample in interlocking block, solid block and cement bricks. Reduction in cost due to OPC replaced by electronic waste materials and reduce the environmental problems during the cement manufacturing. The utilization of blocks using Electronic waste decrease the cost of construction of the building and also save the natural resources by replacing of waste in construction projects and reduce the environmental hazards when compare to the

usage

of conventional materials in

construction projects.

Keywords: Electronic waste, Structural building components, Sustainable materials, Bricks, Interlocking blocks, Solid blocks, Compressive strength.


85

OP – 63 STUDY ON STRENGTH CHARACTERISTICS OF HEMPCRETE M. Jothilingam1, Pratheeba Paul2 and Nithish Narayanan3 Assistant Professor, Dept. of Civil Engg., SRMIST, Chennai – 600 089

1

Professor, Dept. of Civil Engg., HITS, Chennai – 603 103 UG student, Dept. of Civil Engg., SRMIST, Ramapuram, Chennai – 600 089 2

3

Hemp (Cannabis sativa) is an agricultural crop that can be used as a building material in combination with lime and cement. A composite building material that combines a cementitious binder (building limes and cement) with hemp fibers, generally referred to as hempcrete. It has many advantages as a building material but it is not load-bearing and must be used in combination with a load-bearing wooden or steel frame. The aim of this project was to elucidate the feasibility of using hemp fibers in Hempcrete to determine an optimal mix of the different binding agents and to investigate if adding silica fumes to the mix and using Meta-kaolin as a binder would improve mechanical strength of the material. The effects on compressive strength of pre-mixing the binder or creating perforations in the test Specimens were also investigated. Cube specimens were cured for 24 hours in a carbonation chamber (with pure CO2) were tested for mechanical properties and electrical resistance. lncluding more hydrated lime or silica fumes in the mix did not significantly affect mechanical strength, whereas adding more Meta-kaolin to the mix increased mechanical strength and as a binder gave mechanical properties of the same magnitude of a contemporary HC. Pre-mixing the binder created a more homogeneous material but it did not seem to play an important role in final mechanical properties. The specimens that have hemp fibers, lime and meta-kaolin showed better results.

Key words: Hempcrete, Fibre, Lime, Meta-kaolin, Silica fume, Carbonation, Compressive strength


86

OP – 64 AN EXPERIMENTAL STUDY OF CONCRETE MIXED WITH COCONUT SHELL HUSK AS PARTIAL REPLACEMENT OF FINE AGGREGATE S.Prakash chandar , K.Gunasekaran, S.Saravanan and R.Ramasubramani Department of Civil, SRM Institute of Science and Technology, Kattankulathur, Chennai. [email protected]

This study focuses on study on concrete mixed with coconut husk as partial replacement for fine aggregatethe study includes on the properties of compressive strength , split tensile strength , flexural strength and impact resistance of concrete by using the coconut husk in range of 10% , 20% ,30% , 40% , 50% of volume in conventional concrete . Coconut husk volume is optimized as 40% in control concrete for the replacement of river sand to achieve the strength. For the optimized percentage of coconut husk introduced in conventional concrete, mechanical properties such as flexural strength, split tensile strength and impact strength tests were conducted and reported

Keywords : SEM Analysis, XRD analysis, coconut shell, compressive strength, split tensile strength, flexural strength.


87

OP – 65 EFFECT OF BINDERS ON HEMP CONCRETE G. Nityambigai, F. Stella Mary and S. G. Uma Department of Civil, SRM Institute of Science and Technology, Ramapuram, Chennai- 89. Tamil nadu [email protected], [email protected], [email protected]

In the last decade, society has been looking at sustainability of construction. The pressure for improved construction methods also leads to the search for new materials. One possible material with suitable technical properties based on renewable resources is hemp fibre concrete – hempcrete. Hemp (Cannabis sativa) is an agricultural crop that can be used as a building material in combination with lime and cement. Hemp-lime concrete is a sustainable and carbon negative construction material. A building material that combines a cementitious binder (building limes and cement) with hemp fibers, generally referred to as hemp concrete (HC). This paper investigates the effect of binder type on mechanical strength of hemp concrete. It compares hemp concretes made with a hydrated lime, Meta-kaolin and cement. Cubes of size 150mm x 150mm x 150mm were casted with various proportions of lime, meta-kaolin and cement with hemp. Compressive strength for both carbonated and non-carbonated concrete and Electrical resistivity for carbonated concrete of various proportions were compared. Cube specimens were cured for 24 hours in a carbonation chamber (4.5 vol% Carbon dioxide) were tested for mechanical properties and electrical resistance. The specimens that have hemp fibers, lime and meta-kaolin showed better results. Also, the carbonated cubes fared better than the non-carbonated cubes since carbon di oxide filled the pores of cubes during carbonation process making them stronger than the non-carbonated cubes. The composition with hemp and hydrated lime shows the higher value and refers that more voids are filled after carbonation. The specimen that contains hemp, lime and cement shows high resistance to electricity. However in both carbonated and non-carbonated, the specimen with hemp and lime binders obtained the maximum compressive strength.


88

OP – 66 AN EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF CONCRETE WITH GGBS AND QUARRY DUST USING HYBRID STEEL FIBRES K. Anand 1, S.Manikandaprabhu1*, P.M. Rameswaran2, M.B.Sridhar1 and R.Kokila Priya2 1- Department of Civil, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 2- Department of Civil, SRM Institute of Science and Technology, Ramapuram, Chennai- 89. Tamil nadu

This paper deals with Experimental investigation for M35 grade of Concrete with GGBS and Quarry Dust to study the Mechanical properties behaviours like Compressive Strength, Flexure Strength and Split Tensile Strength of Steel fibre reinforced Concrete (SFRC) containing Hybrid Steel fibres of type Hooked end and Crimped with same Aspect Ratio 50 in the Volume fractions of 1%, 2% and 3%. The objective of this study is to understand the influence in mechanical properties of Shapes/Types of Steel fibres (Hooked end – Fig.1 & Crimped – Fig.2) in the concrete and increase strength behaviours. The Concrete mixes has designed as per IS 10262 : 2009, In which reference and all the mixes has got 20% partial replacement of Cement with GGBS and 30% partial replacement of River Sand with Quarry Dust. The Combinations of blending of Steel Fibre are as like 100% Crimp: 0% Hooked, 25% Crimp: 75% Hooked, 75% Crimp: 25 Hooked and 0% Crimp: 100% Hooked end. Totally 13 Nos. of trials are carried out in different combinations including reference mix. The workability of Concrete in all the mixes are maintained 60 – 70 mm slump by addition of PCE based Chemical Admixture 0.25% to 0.4%. The dosage is incremented 0.05% while increasing 1% of Steel Fibre so as to manage equal workability. Specimens were examined as per their relevant IS Code directives at 28 Days of curing, Compression tests are carried out in 7, 14 & 28 days to know the growth in strength as GGBS is partially replaced for Cement. A result data obtained has been analysed and compared with a control specimen (Conventional without fibre). A relationship between Compressive Strength Vs Percentage of Fibres, Flexure Strength Vs Percentage of Fibres, and Split Tensile Strength Vs Percentage of Fibres are represented graphically. Result data are clearly shows percentage of increase in 28 days Mechanical properties like Compressive, Flexure and Split Tensile strengths for M35 grade Concrete.


89

OP – 67 ANTICANCER, BIOCIDAL AND DNA BINDING STUDIES OF BIS(TETRATHIOTUNGSTATE) COMPLEXES OF Pt (II), Pd (II) AND Ni(II) OF BIOINORGANIC RELEVANCE V.K. Srivastava Chemical Research Laboratory, Faculty of Science, Department of Chemistry D.S. College, Aligarh 202001 (U.P.) India [email protected]

The chemistry of compounds containing Transition metals bound to sulfur containing ligands has been actively studied. Interest in these compounds arises from the identification of the biological importance of Iron-sulfur containing proteins as well as the unusual behaviour of several types of synthetic metal – sulfur complexes. Bis (tetrathiotungstate) complexes of Pt (II), Pd (II) and Ni (II) of Bioinorganic relevance were investigated. The complexes [M(M'S4)2]2- were prepared with high yield and purity as salts of the variety of organic cations. The diamagnetism and spectroscopic properties of these complexes confirmed that their structures are essentially equivalent with two bidentate M ' S42  ligands coordinated to the central d8 metal in a square planer geometry. The electro chemical

properties of the [M(M'S4)2]2- dianions in CH3CN and DMF have been determined by cyclic voltametry. The interaction of the complexes with CT-DNA was studied by using absorption, emission, spectral methods, thermal denaturation and viscometry studies. Results showed that metal complexes increase DNA's relative viscosity and quench the fluorescence intensity of EB bound to DNA. In antimicrobial activities all complexes showed good antimicrobial activity higher than ligand against gram positive, gram negative bacteria and Fungi. The antitumor properties have been tested in vitro against two tumor human cell lines, Hela (derived from cervical cancer) and MCF-7 (derived from breast cancer) using a metabolic activity tests. Results showed that the complexes are promising chemotherapeutic alternatives in the search of anticancer agents.

Complex Structure

Metals in Biology

Biocidal activity

DNA Binding

Apoptosis


90

OP – 68 KINETIC AND THERMODYNAMIC INVESTIGATIONS OF THE OXIDATION OF CINNAMYL ALCOHOL BY SOME ORGANIC OXIDANTS D V Prabhu1* and ChetanaRana2 1

Department of Chemistry,Wilson College, Mumbai 400007,India

2

Department of Chemistry,N B Mehta Science College, Bordi 401701, Palghar District, Maharashtra State, India * [email protected]

Cinnamyl alcohol is a naturally occurring unsaturated primary alcohol found in the bark of cinnamon trees and is extensively used in perfumery and deodorant formulations. The first order kinetics of the oxidation of Cinnamyl alcohol to Cinnamaldehyde was studied with respect to the organic oxidants ,Sodium-N-chloro-p-toluenesulphonylamide (Chloramine T)in alkaline medium and N-Bromosuccinimide in alkaline medium.The progress of the oxidation was monitored by iodometric estimation of the unreacted oxidants at regular time intervals during the course of the reaction. The effects of 1) concentrations of alcohol and oxidant,2)ionic strength and 3) temperature (303318K) on the rate of oxidation of Cinnamyl alcohol was studied. For both oxidants, the oxidation rate of alcohol increased with [alc.] but decreased with oxidant concentration. In dilute solution, the oxidation was found to be independent of ionic strength(K2SO4). From the variation of oxidation rate with temperature, the energy of activation and other thermodynamic activation parameters were evaluated and interpreted in terms of the reaction mechanism. The oxidation was accompanied by decrease in entropy of activation ∆S*. Using steady state treatment , rate law equations have been derived for the oxidation of Cinnamyl alcohol and suitable reaction mechanisms have been suggested. For the unsaturated alcohol under study, N-Bromosuccinimide was found to be a more efficient oxidizing agent than Chloramine T in alkaline medium.

Keywords:Cinnamyl alcohol, oxidation. Kinetics, ionic strength, steady state treatment, rate law equations ,entropy of activation.


91

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