Photochrome conversions of a copolymer of styrene with indolinospiropyran

Autor:	P. P. Kisilitsa, G. M. Chernov, V. D. Arsenov, M. I. Cherkashin, V. D. Ermakova, A. V. Vannikov, E. I. Merkulov
Rok vydání:	1975
Předmět:	Photoexcitation chemistry.chemical_compound Chemistry Absorption band Kinetics Copolymer Merocyanine General Chemistry Absorption (chemistry) Optical density Photochemistry Styrene
Zdroj:	Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 24:2374-2377
ISSN:	1573-9171 0568-5230
DOI:	10.1007/bf00921650
Popis:	1. In the pulsed photoexcitation of a solution of a copolymer of indolinospiropyran with styrene, various stereoisomers of the merocyanine form are formed. 2. The proposed scheme of photoconversions of the copolymer includes a step of formation of a cis-cisoid isomer (∼490 nm), which is rapidly converted to three interconvertible stereoisomers with maximum of the absorption bands at ∼560, ∼600, and ∼640 nm. 3. The kinetics of dark bleaching at a time >0.1 sec is determined by the decrease in the optical density of the most stable isomer with λmax ≈ 600 nm.
Databáze:	OpenAIRE
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