Hyperbranched polymer-cored star polyfluorenes as blue light-emitting materials

被引：10
|
作者：
Han Yang
Sun MingHao
Fei ZhuPing
Bo ZhiShan [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2008年 / 53卷 / 18期
基金：
中国国家自然科学基金;
关键词：
hyperbranched polymer; light-emitting diodes (LED); polyfluorenes; star polymer; Suzuki polycondensation;
D O I：
10.1007/s11434-008-0356-8
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Hyperbranched polymer-cored star polyfluorenes with high molecular weights and narrow molecular weight distribution were prepared by palladium-catalyzed one-pot Suzuki polycondensation of multi-functional cores and an AB-type monomer. The optical, electrochemical and thermal properties of the hyperbranched polymer-cored star polymers were investigated. These polymers exhibited good thermal and color stability in solid state, and there was no significant blue-green emission after the polymers had been annealed in air for 2.5 h. Their three-dimensional hyperbranched structures could effectively reduce the aggregation of the peripheral rigid linear conjugated polyfluorene chains.
引用
收藏
页码：2770 / 2776
页数：7
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