Solvent and concentration effects on fluorescence emission in MEH-PPV solution

被引：49

作者：

Quan, SY ^{[1
]}

Teng, F

Xu, Z

Qian, L

Hou, YB

Wang, YS

Xu, XR

机构：

[1] No Jiatong Univ, Inst Optoelect, Beijing 100044, Peoples R China

[2] Shen Yang Univ Technol, Changchun 130021, Peoples R China

[3] Zhong Huan San Jin Ltd, Postdoctoral Woking Stn, Tianjin 300191, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2006年 / 42卷 / 01期

基金：

中国国家自然科学基金;

关键词：

MEH-PPV; solvent effect; flourescence; aggregation;

D O I：

10.1016/j.eurpolymj.2005.06.025

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We systematically studied the excitation and the fluorescence steady-state spectroscopy of poly[2-methoxy-5-(2'-ethylhexoxy)-p-phenylene vinylene] (MEH-PPV) in two solvents and several concentrations. Fluorescence spectra were recorded for solutions in several concentrations (10(-5) mg/ml to 10(-3) mg/ml), showing that tetrahydrofuran (THF) and toluene solvate the polymer chain differently. Dilute solution (10(-5) mg/ml) in THF exhibit broader fluorescence spectra due to greater conformation disorder. The degree of the aggregation depends on both the solvent and the polymer concentration. Aggregation is promoted in toluene solution and hindered in THF solvent. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：228 / 233

页数：6

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