Aggregated states of luminescent conjugated polymers in solutions

被引：59

作者：

Chang, R

Hsu, JH

Fann, WS

Yu, J

Lin, SH

Lee, YZ

Chen, SA

机构：

[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[3] Natl Kaohsiung Normal Univ, Dept Chem, Kaohsiung, Taiwan

[4] Natl Tsing Hwa Univ, Dept Chem Engn, Hsinchu, Taiwan

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 317卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(99)01357-3

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：

In order to study the electronic properties of the interchain state in light-emitting polymers, we have performed spectroscopic experiments for 2,5-dioctyloxy PPV (DOO-PPV) in both good (chloroform) and poor (2-methyl-tetrahydro-furan) solvents. The concentration-dependent absorption, photoluminescence (PL) spectra and dynamics of time-resolved pi, can be explained by the coexistence of an intrachain and one kind of aggregated states in poor solution. The estimated lifetime and transition moment of the aggregated state lead to significant quantum efficiency of pi, which is about 0.75 times that of the intrachain state. The PL spectrum for the aggregated state resembles that of a thin film, implying that the emissive species in thin film is more likely to be an aggregated state. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：153 / 158

页数：6

共 23 条

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ASKARI SH, 1989, SYN MET, V29

[2]

BUM PL, 1992, NATURE, V356, P47

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