9位芳香基取代超支化聚芴的合成与表征

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 1023.

9位芳香基取代超支化聚芴的合成与表征

金佳¹, 武永刚¹, 巴信武¹, 薄志山²

1. 河北大学化学与环境科学学院, 保定 071002;
2. 中国科学院化学研究所高分子物理与化学国家重点实验室, 北京 100190

收稿日期:2009-09-16 出版日期:2010-05-10 发布日期:2010-05-10
通讯作者: 武永刚, 男, 博士, 讲师, 主要从事共轭聚合物的合成研究. E-mail: yonggangwu@iccas.ac.cn; 薄志山, 男, 博士, 研究员. 主要从事共轭聚合物的合成、发光和太阳能电池的研究. E-mail: zsbo@iccas.ac.cn
基金资助:
国家自然科学基(批准号: 200904008)和河北省教育厅基金(批准号: 2009307)资助.

Synthesis and Characterization of 9,9′-Diarylfluorene Hyperbranched Polymers

JIN Jia¹, WU Yong-Gang^1*, BA Xin-Wu¹, BO Zhi-Shan^2*

1. College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China;
2. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Received:2009-09-16 Online:2010-05-10 Published:2010-05-10
Contact: WU Yong-Gang. E-mail: yonggangwu@iccas.ac.cn; BO Zhi-Shan. E-mail: zsbo@iccas.ac.cn
Supported by:
国家自然科学基(批准号: 200904008)和河北省教育厅基金(批准号: 2009307)资助.

摘要/Abstract

摘要：

以2,7-二溴芴酮为起始原料, 在芴的9位引入芳香取代基代替传统的烷基取代基, 增加9位的稳定性, 并用AB+AB₂的方法, 用新单体合成了不同支化度的超支化聚合物, 新合成的超支化聚合物具有良好的热稳定性和发光稳定性. 聚合物的热分解温度都在400 ℃以上; 聚合物的薄膜在空气中于200 ℃加热2 h后没有出现绿光发射带, 发光稳定性和烷基聚芴相比得到明显的提高. DSC结果显示, 线性聚合物在170 ℃时有玻璃化转变, 超支化聚合物在300 ℃以内没有明显的相转变, 保持一种稳定的无定形态, 更有利于提高材料的发光效率.

关键词: 聚芴; 超支化聚合物; 绿光带

Abstract:

Starting from 2,7-dibromofluorene, two aryl substituents were introduced to the 9-position of fluorene to replace the commonly used alkyl groups so as to increase the stability of fluorene. New hyperbranched polymers that exhibited excellent thermal and luminescent stability were synthesized using newly designed monomers through the “AB₂+AB” approach. The decomposition temperatures of all hyperbranched polymers are above 400 ℃. The polymer films heated at 200 ℃ in air for 2 h were not observed green emission band. Compared with alkyl substituted polyfluorenes, the luminescence stability has a marked improvement. DSC results show that linear polymers have a glass transition at 170 ℃, but hyperbranched polymers do not have an obvious phase transition under 300 ℃, indicating hyperbranched polyfluorenes form amorphous films, which help to improve the efficiency of PLEDs.

Key words: Polyfluorene; Hyperbranched polymer; Green emission band

TrendMD:

金佳, 武永刚, 巴信武, 薄志山. 9位芳香基取代超支化聚芴的合成与表征. 高等学校化学学报, 2010, 31(5): 1023.

JIN Jia, WU Yong-Gang*, BA Xin-Wu, BO Zhi-Shan*. Synthesis and Characterization of 9,9′-Diarylfluorene Hyperbranched Polymers. Chem. J. Chinese Universities, 2010, 31(5): 1023.

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