Photophysical process of MEH-PPV solution

被引：72

作者：

Zheng, M ^{[1
]}

Bai, GL ^{[1
]}

Zhu, DB ^{[1
]}

机构：

[1] Chinese Acad Sci, Lab Organ Solids, Beijing 100080, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1998年 / 116卷 / 02期

关键词：

MEH-PPV; energy transfer; aggregate state; interchain interaction;

D O I：

10.1016/S1010-6030(98)00285-8

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：

The solvent, temperature and concentration-dependent fluorescences of MEH-PPV solutions were examined. The aliphatic and aromatic solvents have different effects on the emission spectra of MEH-PPV solutions because of the different interaction mechanisms between MEH-PPV and different solvents at excited states. With the increase of the polarity of the solvents, the emission spectra show blue and red shift at 77 K and room temperature, respectively. With the decrease of the temperature, the emission spectra of MEH-PPV in xylene show red-shift and the fluorescence intensities increase. The concentration-dependent emission spectra remarkably changed with the increase of the concentration because of the existence of the aggregate states and the interchain interactions in concentrated solutions. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：143 / 145

页数：3

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