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TitleSynthesis and optical properties of NLO chromophores containing an indoline donor and azo linker
Publication TypeJournal Article
Year of Publication2012
AuthorsAshraf, M., Teshome A., Kay A.J., Gainsford G.J., Bhuiyan M.D.H., Asselberghs I., and Clays K.
JournalDyes and Pigments
Pagination455 - 464
Date Published2012
ISSN01437208 (ISSN)
KeywordsAzo dyes, Chromophore synthesis, Chromophores, First hyperpolarizabilities, High yield, Hyper-polarizability, NLO-chromophore, nonlinear optical chromophore, Nonlinear optics, Optical properties, Solvatochromisms, Target compound
AbstractA suite of new nonlinear optical chromophores containing an indoline donor and azo linker has been synthesized in high yields. The methodology used allows for the incorporation of various acceptor systems, the ready isolation of the target compounds and access to materials with excellent thermal stabilities (viz = T d 220-270 °C). The first hyperpolarizabilities of the compounds were measured by hyper-Raleigh scattering and all were found to have an excellent response. The highest value measured was 1640 × 10 -30 esu in DMF at 800 nm for a chromophore containing the well-known TCF acceptor system. Based on data obtained in this and other studies, there is evidence that chromophores containing indoline donors are capable of providing compounds with molecular NLO responses higher than those containing donors derived from N,N-disubstituted anilines. © 2012 Elsevier Ltd. All rights reserved.

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