Photodegradation of 4,4-Bis(4-hydroxyphenyl)valeric acid and its inclusion complex with beta-cyclodextrin in aqueous solution

Victoria A. Salomatova, Ivan P. Pozdnyakov, Vadim V. Yanshole, Feng Wu, Vjacheslav P. Grivin, Nikolay M. Bazhin, Victor F. Plyusnin

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

9 Цитирования (Scopus)

Аннотация

Nanosecond laser flash photolysis and time-resolved fluorescence were used to study photochemistry of 4,4-Bis(4-hydroxyphenyl)valeric acid (diphenolic acid, DPA) and complex of DPA with beta-cyclodextrin (DPA-beta CD) in aqueous solutions. For both systems the primary photochemical process was found to be photoionization with the formation of a hydrated electron-phenoxyl radical pair. Inclusion of DPA in cyclodextrin cavity leads to the great increase of photoionization and fluorescence quantum yield (from 0.01 to 0.14) as well as fluorescence lifetime (from 0.17 to 2.9 ns) due to decreasing of the quenching rate of the singlet excited state of complexed DPA by solvent molecules. (C) 2013 Elsevier B.V. All rights reserved.

Язык оригиналаанглийский
Страницы (с-по)27-32
Число страниц6
ЖурналJournal of Photochemistry and Photobiology A: Chemistry
Том274
DOI
СостояниеОпубликовано - 30 янв 2014

Предметные области OECD FOS+WOS

  • 2.04 ХИМИЧЕСКИЕ ТЕХНОЛОГИИ
  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
  • 1.04 ХИМИЧЕСКИЕ НАУКИ

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