Color tuning in polyfluorenes by copolymerization with low band gap comonomers

被引：52

作者：

Lee, JI ^{[1
]}

Klaerner, G ^{[1
]}

Davey, MH ^{[1
]}

Miller, RD ^{[1
]}

机构：

[1] IBM, Almaden Res Ctr, San Jose, CA 95120 USA

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

polyfluorenes; conjugated polymers; photoluminescence;

D O I：

10.1016/S0379-6779(98)01364-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Poly((9.9-dialkylfluorene-2,7-diyl) derivatives containing low band gap comonomers. have been synthesized through Ni(0) mediated Yamamoto polymerization. High molecular weight and thermally stable polymers were obtained which could be processed in common organic solvents. The absorption and fluorescence spectra of the new polymers were recorded. The fluorescence maxims of the copolymers red-shift as the band gap of the comonomer decreases. Although substituted fluorene homopolymers showed excimer emission after annealing at elevated temperature, excimer formation upon annealing was suppressed by incorporating low band gap comonomers into the fluorene main chain. In this paper, color tuning, exciton migration and trapping and the formation of excimers in poly(fluorene) derivatives is discussed.

引用

页码：1087 / 1088

页数：2

共 5 条

[1]

BRADLEY DDC, 1997, SPIE P, V3145, P254

[2] Thermally stable blue-light-emitting copolymers of poly(alkylfluorene) [J].