INTRA-MOLECULAR ENERGY MIGRATION AND TRANSFER IN MACROMOLECULES - FLUORESCENCE DEPOLARIZATION APPROACH

被引：15

作者：

MCINALLY, I

REID, RF

RUTHERFORD, H

SOUTAR, I

机构：

[1] Chemistry Department, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, Currie

来源：

EUROPEAN POLYMER JOURNAL | 1979年 / 15卷 / 08期

关键词：

D O I：

10.1016/0014-3057(79)90021-1

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Intramolecular energy migration and trapping by acceptor species which are an integral part of a macromolecule have been studied in three polymer systems using the techniques of fluorescence depolarization. The effect of energy migration produces depolarization of both donor and acceptor emissions. Copolymers of styrene with 1-vinylaphthalene or 2-phenyl-5-(p-vinyl)phenyloxazole have been studied. In addition, energy transfer to a terminal anthracene species has been studied in a polyvinyltoluene sample. When energy transfer occurs with unit efficiency, the depolarization of acceptor emission reflects the path length available to the migrating exciton. In cases of lesser transfer efficiency, the acceptor emission exhibits depolarization characteristics which reflect the distribution of migration lengths from the site of energy absorption. © 1979.

引用

页码：723 / 726

页数：4