The effect of intermolecular donor-acceptor energy transfer on emission anisotropy in uniaxially oriented polymer films

被引：10

作者：

Sadownik, M ^{[1
]}

Bojarski, P ^{[1
]}

机构：

[1] Univ Gdansk, Inst Expt Phys, PL-80952 Gdansk, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 396卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.08.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Excitation energy transport between donors and acceptors is studied for uniaxially stretched and unstretched poly(vinyl) alcohol films. Donor emission anisotropy courses versus acceptor concentration as well as donor-acceptor emission anisotropy spectra occurred quite different in stretched and unstretched films. Upon donor excitation the total emission anisotropy rapidly decreases when passing from the donor to the acceptor fluorescence band in disordered systems. However, such a pronounced effect has not been found in partly ordered films. Donors and acceptors exhibit highly preferential mutual orientation in strongly ordered films resulting in the preservation of acceptor emission anisotropy. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：293 / 297

页数：5

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