Study of photoreduction kinetics of xanthene dyes with intersystem crossing from upper triplet states - art. no. 67272N

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: ICONO 2007 Conference; Minsk, BYELARUS; Minsk, BYELARUS

Год издания: 2007

Идентификатор DOI: 10.1117/12.752497

Ключевые слова: xanthene dyes, gelatin, photoreduction, four-level energy scheme, reverse intersystem crossing, upper triplet states, Four-level energy scheme, Gelatin, Photoreduction, Reverse intersystem crossing, Upper triplet states, Xanthene dyes, Concentration (process), Mathematical models, Photoexcitation, Photolysis, Reaction kinetics, Reduction, Four level energy schemes, Gelatins, Kinetic models, Polyatomic molecules, Reverse intersystem crossing, Xanthene dyes, Dyes

Аннотация: Modeling of kinetics of photoprocesses in polyatomic molecules based on four-level energy scheme is carried out. The model includes the processes in dye under cw photoexcitation and takes into account a reverse intersystem crossing and photochemical reaction from the upper triplet states. The analytical time-dependent relation for dye concentration of the initial form was obtained taking into account the contrast of rates of various photoprocesses and using of quasistationary approximation. It was shown that rate constant of photolysis correlates with probability of intersystem crossing of the dyes. For the xanthene dyes in gelatin it was shown that simple experimental method of cw laser photolysis combined with the kinetic model could be effective technique of study of upper excited states participation.

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Издание

Журнал: ICONO 2007: NONLINEAR LASER SPECTROSCOPY AND HIGH-PRECISION MEASUREMENTS; AND FUNDAMENTALS OF LASER CHEMISTRY AND BIOPHOTONICS

Выпуск журнала: Vol. 6727

Номера страниц: 7272-7272

ISSN журнала: 0277786X

Место издания: BELLINGHAM

Издатель: SPIE-INT SOC OPTICAL ENGINEERING

Авторы

  • Sizykh A. (Siberian Fed Univ, Inst Sci & Human, Dept Quantum Elect, Krasnoyarsk 660041, Russia)
  • Slyusareva E. (Siberian Fed Univ, Inst Sci & Human, Dept Quantum Elect, Krasnoyarsk 660041, Russia)
  • Tarbetskaya K. (Siberian Fed Univ, Inst Sci & Human, Dept Quantum Elect, Krasnoyarsk 660041, Russia)

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