Quenching of fluorescence of conjugated poly(p-phenylene) polymers by benzil and dimethylaminobenzil molecules

被引：1

作者：

Bagnich S.A. ^{[1
]}

Knyukshto V.N. ^{[1
]}

机构：

[1] Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, Minsk 220072

来源：

Journal of Applied Spectroscopy | 2006年 / 73卷 / 6期

关键词：

Conjugated polymer; Energy transfer; Exciplex; Fluorescence;

D O I：

10.1007/s10812-006-0165-2

中图分类号：

学科分类号：

摘要：

We have studied the mechanisms for quenching of the fluorescence of conjugated poly(p-phenylene) polymers by benzil and dimethylaminobenzil molecules. We have shown that molecules in the diketone series are quenching agents for the fluorescence of the indicated polymers, and can serve as singlet-triplet converters capable of populating the triplet state of the polymer. We have observed that the efficiency of quenching of the fluorescence of the studied polymers depends considerably on the presence of bulky side groups in the polymer or in the activator molecules. Based on analysis of the data obtained, we conclude that in the case of a rigid planar structure for the polymer, a significant contribution to quenching of its fluorescence comes from not only singlet-singlet energy transfer but also charge transfer, leading to formation of intermolecular complexes (exciplexes). © Springer Science+Business Media, Inc. 2006.

引用

页码：846 / 853

页数：7

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