Push-Pull Azo-Chromophores Containing Two Fused Pentatomic Heterocycles and Their Nonlinear Optical Properties
作者:Roberto Centore、Sandra Fusco、Andrea Peluso、Amedeo Capobianco、Matthias Stolte、Graziano Archetti、Hans-Georg Kuball
DOI:10.1002/ejoc.200900218
日期:2009.7
We have developed procedures for the synthesis of push–pull azo-chromophores containing the s-triazolo[3,4-b]thiadiazole heterocycle compatible with the presence of electron-acceptor groups (nitrophenyl group) as substituents on both the triazole and thiadiazole rings. The linear and non-linear optical properties of the synthesized chromophores have been characterized by the EFISH technique, electro-optical
我们开发了合成推拉偶氮发色团的方法,该发色团含有 s-三唑并 [3,4-b] 噻二唑杂环,与电子受体基团(硝基苯基)的存在相容,作为三唑和噻二唑环上的取代基. 合成生色团的线性和非线性光学特性已通过 EFISH 技术、电光吸收光谱和 DFT 计算进行表征。综合结果表明发色团性质的显着调节取决于杂环上的取代模式。观察到并表征了发色团周围 N=N 键的快速紫外驱动反式异构化和较慢的热驱动顺式反异构化。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)