Role of singlet and triplet states in thermal cis—trans isomerization of azo dyes with dihydroquinoline and tetrazole moieties

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2025-09-12 DOI:10.1007/s11172-025-4730-3

V. V. Kuzmin, G. V. Golovina, A. E. Egorov, E. N. Timokhina, T. Yu. Astakhova, T. D. Nekipelova

引用次数: 0

Abstract

Cis—trans isomerization of dihydroquinolylazotetrazole dyes via thermally induced excited triplet state was experimentally proved. The isomerization kinetics was studied in the presence of tetrabutylammonium iodide (TBAI) and iodobenzene (PhI), compounds with the heavy atom. The simultaneous participation of two routes, singlet and thermally induced triplet states, in the rotation mechanism of cis—trans isomerization of azo dyes has been shown for the first time. Special attention is given to differences in the mechanism of action of TBAI and PhI.

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单线态和三重态在含二氢喹啉和四氮唑偶氮染料热顺反异构化中的作用

实验证明了热致激发态对二氢喹啉偶氮四唑染料的顺反异构化反应。研究了含重原子的四丁基碘化铵（TBAI）和碘苯（PhI）存在下的异构化动力学。偶氮染料顺反异构化的旋转机制中首次发现了单线态和热诱导三重态两种途径同时参与。特别注意TBAI和PhI在作用机制上的差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.