β-phase formation in a crosslinkable poly(9,9-dihexylfluorene)

被引：12

作者：

Kuehne, Alexander J. C. ^{[1
]}

Mackintosh, Allan R. ^{[1
]}

Pethrick, Richard A. ^{[1
]}

机构：

[1] Univ Strathclyde, Dept Pure & Appl Chem, WestCHEM, Glasgow G1 1XL, Lanark, Scotland

来源：

POLYMER | 2011年 / 52卷 / 24期

基金：

英国工程与自然科学研究理事会;

关键词：

Polyfluorene; Morphology; Amplified spontaneous emission; AMPLIFIED SPONTANEOUS EMISSION; OPTICAL-PROPERTIES; MORPHOLOGY; FILMS;

D O I：

10.1016/j.polymer.2011.09.044

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The synthesis of a crosslinkable poly(9,9-dihexylfluorene) derivative is reported. Vinyl ether moieties allow for photolithographic patterning, resulting in an immiscible polyfluorene network, which enables subsequent wet thin-film processing. The metastable beta-phase morphology, inherent to most polyfluorene homopolymers, can be induced in this crosslinkable polymer. This is verified by optical spectroscopy, X-ray diffraction and by thermal analysis. The beta-phase in polyfluorenes is of interest due to its superior optical and electrical characteristics compared to the amorphous phase. Here, amplified stimulated emission is studied. Surprisingly, the beta-phase polymer exhibits higher emission thresholds than the amorphous analogue. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5538 / 5542

页数：5

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