Aqueous photochemistry of bisphenol E in the presence of β-cyclodextrin

被引：0
|
作者：
I. P. Pozdnyakov
L. Guo
E. M. Glebov
F. Wu
V. F. Plyusnin
V. P. Grivin
N. Deng
机构：
[1] Siberian Branch of Russian Academy of Sciences,Institute of Chemical Kinetics and Combustion
[2] Novosibirsk State University,Department of Environmental Science
[3] Wuhan University,undefined
来源：
High Energy Chemistry | 2011年 / 45卷
关键词：
Inclusion Complex; Fluorescence Quantum Yield; High Energy Chemistry; Laser Pulse Energy; Phenoxyl;
D O I：
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学科分类号：
摘要：
Nanosecond laser flash photolysis and time-resolved fluorescence were used to study photochemistry of bis(4-hydroxyphenyl)ethane (Bisphenol E, BPE) and complex of BPE with β-cyclodextrin (BPE-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 BPE in cyclodextrin cavity leads to the increase of photoionization and fluorescence quantum yield (from 0.009 to 0.16) as well as fluorescence lifetime (from 0.07 to 2.5 ns) due to decreasing of the quenching rate of the singlet excited state of complexed BPE by solvent molecules.
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页码：214 / 221
页数：7
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