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功能高分子学报:2011,24(1):-
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9位含空穴型材料的芳基取代芴及其聚合物的合成与表征
(1.河北大学化学与环境科学学院,河北 保定 071002;2.河北大学化学与环境科学学院,河北 保定 071003;3.河北大学化学与环境科学学院,河北 保定 071004)
Synthesis and Characterization of P Type Moiety-Containing 9,9’-Diarylfluorene Polymers
(1.College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei, China;2.College of Chemistry and Environmental Science, Hebei University, Baoding 071003, Hebei, China;3.College of Chemistry and Environmental Science, Hebei University, Baoding 071004, Hebei, China)
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中文摘要: 以2,7-二溴芴酮为原料,在芴的9位引入三苯胺等芳香取代基代替烷基取代基,增加9位的稳定性。用该新单体合成了线性聚合物,同时用AB+AB2的方法合成了不同支化度的超支化聚合物。合成的聚合物具有良好的热稳定性和发光稳定性,热分解温度在400 °C以上;聚合物的薄膜在空气中200 °C加热2 h后没有出现绿光带发射,其发光稳定性与烷基聚芴相比得到明显提高。DSC结果显示,线性聚合物和超支化聚合物在300 °C以内没有明显的相转变,其稳定的无定形态,有利于提高发光效率。
中文关键词: 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 to increase the stability of fluorene. New polymers with 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 °C. No green emission band was observed after polymer films heated at 200 °C in air for 2 h. Compared with alkyl substituted polyfluorenes, the luminescent stability has a marked improvement. DSC results show that linear polymer and hyperbranched polymers don’t have an obvious phase transition within 300 °C, indicating formation of hyperbranched polyfluorenes amorphous films, which help to improve the emitting efficiency of polyflorenes in film.
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基金项目:国家自然科学基金项目(20904008);教育部博士点基金(20091301120004)
引用本文:
潘鑫鑫,李冬至,武永刚.9位含空穴型材料的芳基取代芴及其聚合物的合成与表征[J].功能高分子学报,2011,24(1):.
PAN Xin-xin,LI Dong-zhi,WU Yong-gang.Synthesis and Characterization of P Type Moiety-Containing 9,9’-Diarylfluorene Polymers[J].Journal of Functional Polymers,2011,24(1):.