E. M. Glebov, I. P. Pozdnyakov, V. V. Semionova, D. V. Lonshakov, A. G. Lvov, V. Z. Shirinian, A. A. Melnikov, S. V. Chekalin, “Primary processes in photochemistry of 2,3-bis(2,5-dimethylthiophen-3-yl)cyclopent-2-enone”, Mendeleev Commun., 2020, Volume 30, Issue 1,Pages <nobr>61–63</nobr>

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Mendeleev Commun., 2020 Volume 30, Issue 1, Pages 61–63 (Mi mendc1101)

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Communications

Primary processes in photochemistry of 2,3-bis(2,5-dimethylthiophen-3-yl)cyclopent-2-enone

E. M. Glebov^ab, I. P. Pozdnyakov^ab, V. V. Semionova^a, D. V. Lonshakov^c, A. G. Lvov^c, V. Z. Shirinian^c, A. A. Melnikov^de, S. V. Chekalin^d

^a V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
^b Novosibirsk State University, Novosibirsk, Russian Federation
^c N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
^d Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russian Federation
^e National Research University Higher School of Economics (HSE University), Moscow, Russian Federation

Abstract: Early processes in photochemistry of 2,3-bis(2,5-dimethylthiophen-3-yl)cyclopent-2-enone were explored using the ultrafast pump-probe spectroscopy. The photocyclization occurs from the antiparallel conformation of an open form on a time scale of 7 ps, while the parallel conformation exhibits an intersystem crossing within 130 ps. The mechanism and timescales were revealed as typical of other thiophene-containing diarylethenes.

Keywords: diarylethenes, 2,3-diarylcyclopentenones, photochemistry, photophysics, ultrafast pump-probe spectroscopy.

Language: English

DOI: 10.1016/j.mencom.2020.01.020

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