Kinetics and mechanism of photochromic transformations of a 2,3-diarylcyclopentenone

Kinetics and mechanism of photochromic transformations of a 2,3-diarylcyclopentenone Full article

Journal

Kinetics and Catalysis
ISSN: 1608-3210 , E-ISSN: 0023-1584

Output data

Year: 2015, Volume: 56, Number: 3, Pages: 316-322 Pages count : 7 DOI: 10.1134/s0023158415030180

Authors

Semionova V.V. ¹ , Glebov E.M. ^1,2 , Smolentsev A.B. ¹ , Korolev V.V. ¹ , Grivin V.P. ¹ , Plyusnin V.F. ^1,2 , Shirinian V.Z. ³

Affiliations

1	V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
2	Novosibirsk State University, Novosibirsk, 630090 Russia
3	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, 119991, Russia

Photochemistry of recently synthesized 2,3-bis-(2,5-dimethylthiophen-3-yl-cyclopent-2-en-1-one) (diarylcyclopentenone, 1A) as a characteristic representative of photochromic 2,3-diarylcyclopent-2-en-1-ones (DCPs) was examined by means of stationary an nanosecond laser flash photolysis. Quantum yields of forward and backward photochemical reactions and molar absorption coefficient of the closed form were measured. Contradictions in the literature values of these parameters were eliminated. In laser flash photolysis experiments the formation of the 1A open form triplet state was exhibited, and the rate constants of the reactions of its decay were measured. 1A demonstrates rather low fatigue resistance, as any of other DCPs. In spite of the triplet state formation, photodegradation of 1A is not caused by the reactions of singlet oxygen.

Semionova V.V. , Glebov E.M. , Smolentsev A.B. , Korolev V.V. , Grivin V.P. , Plyusnin V.F. , Shirinian V.Z.
Kinetics and mechanism of photochromic transformations of a 2,3-diarylcyclopentenone
Kinetics and Catalysis. 2015. V.56. N3. P.316-322. DOI: 10.1134/s0023158415030180 WOS Scopus OpenAlex

Web of science:	WOS:000356369200009
Scopus:	2-s2.0-84935032843
OpenAlex:	W569364877

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