Aug 13, 2015 - for 6-bromo-2,4-dichloroquinazoline is larger than that of the weaker Csp2-Br bond .... observed for the chloro-chloro or chloro-bromo substituted quinazolines ...... See review by Mphahlele, M.J.; Maluleka, M.M. Advances in ...
Dec 31, 2013 - With the aim of developing new molecular devices having long-range electron ..... electronic structures of anthracene derivatives are perturbed.
Dec 31, 2013 - Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private ... With the aim of developing new molecular devices having long-range electron ...... contemporary developments,â Journal of Chemical Educ
Jun 15, 2014 - spectroscopy (e.g. INDO/S model, fitted to reproduce UVevis ab- ...... [10] Karton-Lifshin N, Albertazzi L, Bendikov M, Baran PS, Shabat D.
Nov 30, 2016 - The authors express sincere thanks for a Grant-in-Aid Priority. Research from Japan ... G. N. Pandian and H. Sugiyama, Bull. Chem. Soc.
areas including DNA nanotechnology and biotechnology.1421. With regard to the fluorescent nucleobases, challenging tasks include the design and synthesis ...
Mar 5, 2013 - ... Yamagata 992-8510, Japan,. Department of Chemistry, The University of Hull, Hull HU6 7RX, U.K., and ..... Ï-conjugated by CdN bond.
Oct 11, 2011 - dioxane/water. The final yields were from 70 to 96%. 2-[4'-(N-4,6-Dichloro-1,3,5-triazin-2-yl)-2'-hydroxy phenyl] benzoxazole (3a). Yield: 70%; ...
solution showed absorption peaks at 270 - 280 nm with shoulder peaks at around 380 nm ... chloroform solutions of the copolymers showed broad emission peaks at 415 - 425 nm. ..... [3] Kim, H.K., Ryu, M.K. and Lee, S.M. (1997) Novel Silicon-Containing
phthalocyanines of potential use in photodynamic therapy ... The synthesis, photophysical properties and singlet oxygen yields of a range of polyether substituted metallo and ..... copper phthalocyanines were also formed, and were eluted after.
poration of nearly all metals in the periodic table into the Pc core. ...... 6.3. POClTBC(13). 5.5. 6.7. 3.6 Ã 103. 4.4. 1kF is the rate constant for fluorescence. Values ...
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Production and hosting by Elsevier B.V. All rights reserved. Introduction ... the synthesis of new Alq3 derivatives and studying their photo- luminescence (PL) and ...
Jun 19, 2015 - 2,30-bipyridinato-N,C4)iridium(III) and (20,60-difluoro-4-O-alkyl- ... ligand with electron-withdrawing and electron-donating group substitutions ...
Feb 28, 2017 - Single-crystal X-ray analysis revealed that the complexes belong ... differential thermal analysis (DTA) measurements showed their excellent ...
through bond electron transfer mechanism is preferred, although the distance ..... many aspects of my life at the Center much easier. ...... length of the lens).
Sep 30, 2011 - Evans, I.P.; Spencer, A.; Wilkinson, G. Dichlorotetrakis(dimethyl sulphoxide) ruthenium(II) and its use as a source material for some new ...
Kai-Lun Kuo, Chiung-Cheng Huang and Ying-Chih Lin*. Received 29th ...... Soc., 2002, 124, 11576â11577; (b) W.-L. Yu, J. Pei, W. Huang and A. J. Heeger ...
Mar 17, 2006 - A new triad based on pyrazolino[60]fullerene and a conju- gated dimethylaniline group has been synthesize
Six different isomers were calculated for 4 to study the effect of changing the ... where T(Z) is the normalized transmittance of the sample, I00 is the intensity of ... the Q and B bands of Gouterman's 4-orbital model,[10] while blue diamonds are us
in a medium of pyridine and lithium chloride. These polymers were ... tion of molecular structure of a polymer can dramatically influence performance and ...
The MALDI-MS ana- lyses for 3 ..... B3LYP/3-21G(*) methods with the GAUSSIAN 03 software package ... orbitals were gener
C60 dyads.9 The first ionization potentials (IPs) for ferrocene and ruthenocene are .... Scheme 1 (i) 4-Nitrophenylhydra
Mar 17, 2010 - Bowling Green, Ohio 43403, and Angstrom Technologies, Inc., Florence, Kentucky .... (DCM), acetonitrile (ACN), and tetrahydrofuran (THF) are.
4542
J. Phys. Chem. A 2010, 114, 4542–4549
Aromatic Fumaronitrile Core-Based Donor-Linker-Acceptor-Linker-Donor (D-π-A-π-D) Compounds: Synthesis and Photophysical Properties Krishna Panthi,† Ravi M. Adhikari,‡ and Thomas H. Kinstle*,† Department of Chemistry, Center for Photochemical Sciences, Bowling Green State UniVersity, Bowling Green, Ohio 43403, and Angstrom Technologies, Inc., Florence, Kentucky 41042 ReceiVed: December 5, 2009; ReVised Manuscript ReceiVed: February 18, 2010
A new class of aromatic fumaronitrile core-based compounds with different donors and linkers has been synthesized and well characterized. Compounds 1 and 2 have indole and 2-phenylindole groups as electron donors, respectively. Compounds 3 and 4 have a diphenylamino group as the electron donor, and compound 5 has a 3,6-di-tert-butylcarbazole group as an electron donor. These compounds absorb in the blue-to-green region and emit in the blue-to-red region depending on the electron donor, linker, and solvents. The quantum yields of fluorescence of these compounds in solution are measured and found to be moderate, but in solid states, they are high. These compounds display strong emission solvatochromism that is reflected by a large shift in their fluorescence emission maxima on changing the solvents. This change is accompanied by a successive decrease in fluorescence intensity. The fluorescence lifetimes of these compounds are measured in different solvent and found to vary from
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