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Intramolecular energy migration and transfer in macromolecules. A fluorescence depolarization approach

✍ Scribed by I. McInally; R.F. Reid; H. Rutherford; I. Soutar

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
366 KB
Volume
15
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet--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 accep(or emissions. Copolymers of styrene with l-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.

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