Photochemical Properties of Supramolecular Covalently Bound Dyad Based on 8-Hydroxy-2-styrylquinoline

Autor:	Mikhayl F. Budyka, V. M. Li, S. A. Dozmorov, T. N. Gavrishova
Rok vydání:	2019
Předmět:	010302 applied physics 010304 chemical physics Photoisomerization Chemistry Covalent bond Intramolecular force 0103 physical sciences Supramolecular chemistry Physical and Theoretical Chemistry Photochemistry Excimer 01 natural sciences Reversible reaction
Zdroj:	High Energy Chemistry. 53:5-12
ISSN:	1608-3148 0018-1439
DOI:	10.1134/s0018143919010028
Popis:	Spectral and photochemical properties of bichromophoric dyad with two styrylquinoline (SQ) photochromes bridged by the decamethylene group have been investigated. According to stationary spectrophotometry data, there is no substantial interaction between the two SQ units of the dyad in the ground (S0) state. Under irradiation, two competitive reversible reactions occur: trans-cis photoisomerization of the SQ photochrome and intramolecular [2+2] photocycloaddition between two SQ photochromes, indicating the transient formation of excimer. A comparison with results of model studies and earlier obtained data leads to the assumption that the excimer formation is facilitated by covalent bridging of the SQ photochromes by the decamethylene chain, whereas π-staking between the two SQ photochromes does not seem to play a substantial role.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fbaf34a33a5e1c9837b6f984a262717f https://doi.org/10.1134/s0018143919010028 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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