Single-molecule conformations probe free volume in polymers

被引：55
作者：
Vallée, RAL
Cotlett, M
Van der Auweraer, M
Hofkens, J
Müllen, K
De Schryver, FC
机构：
[1] Katholieke Univ Leuven, Dept Chem, B-3001 Louvain, Belgium
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 08期
关键词：
D O I：
10.1021/ja031599g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this communication, we showed that the conformational dynamics of the tetraphenoxy?perylenetetracarboxy diimide single dye molecule embedded in different polymer matrixes allows a direct visualization of the local free volume. By monitoring the fluorescence lifetime of the dye molecule in time and at different locations in the matrix, different lifetimes were observed. Attributed to two distinct stable conformations of the dye molecule, the lifetime variations permitted characterization of the spatial distribution and temporal dynamics of free volume. Copyright © 2004 American Chemical Society.
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收藏
页码：2296 / 2297
页数：2
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