Spectral narrowing phenomena in the emission from a conjugated polymer

被引：46

作者：

Long, X

Grell, M

Malinowski, A

Bradley, DDC ^{[1
]}

Inbasekaran, M

Woo, EP

机构：

[1] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[2] Univ Sheffield, Ctr Mol Mat, Sheffield S3 7RH, S Yorkshire, England

[3] Dow Chem Co, Midland, MI 48674 USA

来源：

OPTICAL MATERIALS | 1998年 / 9卷 / 1-4期

基金：

英国工程与自然科学研究理事会;

关键词：

spectral narrowing; conjugated polymer; film morphology; interchain interaction;

D O I：

10.1016/S0925-3467(97)00157-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a study of the morphology dependent emission properties of a liquid crystalline polyfluorene in solid thin films. Spectral narrowing (SN) is observed in spin coated films, but after thermal treatment of the same films the SN is no longer observed. For films which are spin coated on a rubbed polyimide alignment layer, the situation is different. There is then no influence of thermal treatment on the observation of SN. However, specific combinations of the pump polarization direction, film alignment direction and the long axis of the rectangular excitation res now play an important role. The spectral location of SN peaks also varies with film morphology and for different regions of the same sample. The occurrence of SN is strongly dependent on film morphology and the excitation configuration. (C) 1998 Elsevier Science B.V.

引用

页码：70 / 76

页数：7

共 13 条

[1] Photoluminescence in pyridine-based polymers: Role of aggregates [J].