Synthesis and properties of carbazole-based hyperbranched conjugated polymers

被引：33
作者：
Qu, Jinqing
Shiotsuki, Masashi
Kobayashi, Norihisa
Sanda, Fumio
Masuda, Toshio
机构：
[1] Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6158510, Japan
[2] Chiba Univ, Dept Informat & Image Sci, Chiba 2638522, Japan
来源：
POLYMER | 2007年 / 48卷 / 22期
关键词：
carbazole; conjugated polymer; hyperbranched polymer;
D O I：
10.1016/j.polymer.2007.09.011
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Carbazole-based novel hyperbranched conjugated polymers linked with triphenylamine and benzene moieties were synthesized by Sonogashira coupling polycondensation of N-octadecyl- and N-octyl-3,6-diethynylcarbazoles with tris(4-iodophenyl)amine and 1,3,5-tribromobenzene. Solvent-soluble polymers with number-average molecular weights in the range of 3500-21,000 were obtained in 48-66% yields. The UV-vis absorption bands of the polymers were red-shifted compared to that of carbazole, indicating the extension of conjugation length. The polymers emitted blue-green fluorescence with high quantum yields up to 67% in CHCl3. Poly(1/3) containing triphenylamine units emits visible light and shows unique solvatochromism. The polymers were electrochemically redox-active. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6481 / 6490
页数：10
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