Chromophores with quinoxaline core in π-bridge and aniline or carbazole donor moiety: synthesis and comparison of their linear and nonlinear optical properties.

Autor: Kalinin, A. A., Sharipova, S. M., Islamova, L. N., Fazleeva, G. M., Busyurova, D. N., Sharipova, A. V., Fominykh, O. D., Balakina, M. Yu.
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Zdroj: Russian Chemical Bulletin; May2022, Vol. 71 Issue 5, p1009-1018, 10p
Abstrakt: Two new D—π—A chromophores with the tricyanofuranyl acceptor (A), an amphi-divinyl quinoxaline π-electron conjugated bridge, and the carbazole or aniline donor moiety (D) bearing the tert-butyldimethylsilyl group were synthesized. Their photophysical and molecular nonlinear optical properties were investigated. It is found that both D—π—A chromophores absorb in the visible region and are transparent at 850 nm. They exhibit a noticeable solvatochromic shift and inversion of solvatochromism on going from dioxane to chloroform and, then, to acetonitrile. According to theoretical estimates, the chromophores have high values of the first hyperpolarizability. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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