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Multifunctional fluorescent diarylethene: time-resolved study of photochemistry.
Semionova, Veronica V; Pozdnyakov, Ivan P; Grivin, Vjacheslav P; Plyusnin, Victor F; Tsentalovich, Yuri P; Shirinian, Valerii Z; Melnikov, Alexei A; Chekalin, Sergei V; Lvov, Andrey G; Glebov, Evgeni M.
Afiliación
  • Semionova VV; V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. glebov@kinetics.nsc.ru.
  • Pozdnyakov IP; V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. glebov@kinetics.nsc.ru.
  • Grivin VP; V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. glebov@kinetics.nsc.ru.
  • Plyusnin VF; V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. glebov@kinetics.nsc.ru.
  • Tsentalovich YP; Novosibirsk State University, Novosibirsk, Russia.
  • Shirinian VZ; International Tomography Center, Siberian Branch of the Russian Academy of Sciences Novosibirsk, Russia.
  • Melnikov AA; N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia.
  • Chekalin SV; Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russia.
  • Lvov AG; Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russia.
  • Glebov EM; A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia. lvov-andre@yandex.ru.
Phys Chem Chem Phys ; 25(20): 14179-14192, 2023 May 24.
Article en En | MEDLINE | ID: mdl-37165694
A study of luminescence and photochromic properties of (E)-2,3-bis(2,5-dimethylthiophen-3-yl)-5-(4-(pyrrolidin-1-yl)benzylidene)cyclopent-2-en-1-one, which is a diarylethene with a push-pull system between carbonyl and dimethylamino groups, was performed using time-resolved methods. The intramolecular charge transfer (ICT) process as well as 6π-electrocyclization and E-/Z-isomerization contribute to the complex light-induced properties of this molecule. Formation of unexpected short-lived intermediates was detected in the time range from 100 fs to 100 µs. A model based on two processes (additional photocyclization and interconversion between conformers) was proposed to rationalize this result. The key intermediates existing in the picosecond time domain are so-called precursors, which are proposed for both parallel (p) and anti-parallel (ap) isomers of the open form. In general, fast light-induced processes for the fluorescent diarylcyclopentenones are much more complicated than for the parent cyclopentenone-based DAE.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Rusia Pais de publicación: Reino Unido