Single-molecule conformations probe free volume in polymers.
Single-molecule conformations probe free volume in polymers.
复制标题
单分子构象探测聚合物中的自由体积。
DOI:
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发表时间:
2004
影响因子:
15
通讯作者:
F. D. De Schryver
中科院分区:
文献类型:
--
作者:
R. Vallée;M. Cotlet;M. van der Auweraer;J. Hofkens;K. Müllen;F. D. De Schryver
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.