Synthesis and photophysical properties of poly(aryleneethynylene)s bearing dialkylsilyl side substituents
Synthesis and photophysical properties of poly(aryleneethynylene)s bearing dialkylsilyl side substituents
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带有二烷基甲硅烷基侧取代基的聚(亚芳基乙炔基)的合成和光物理性能
DOI：
10.1016/j.eurpolymj.2009.01.010
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发表时间：
2009-04-01
影响因子：
6
通讯作者：
Li, Shuhong
中科院分区：
文献类型：
--
作者：
Fang, Lei;Li, Ying;Li, Shuhong
以1，4-二乙炔基-2，5-二(二烷基硅基)苯和二碘芳烃为原料，通过Sonogashira交叉偶联反应合成了一系列含二烷基硅基(-SiR2H)侧基的聚芳乙烯-S。研究了它们在溶液中的光物理性质。所有聚合物均表现出较强的荧光强度和较高的量子产率。与含对苯基的类似物相比，主链含有间苯基的聚合物在较短的波长有吸收和发射峰，而主链含有亚硫基团的聚合物则表现出红移的光谱。对于具有相同共轭主链的聚合物，硅基取代基对其光物理性质的影响可以忽略不计。(C)2009爱思唯尔有限公司。保留所有权利。
A series of poly(aryleneethynylene)s bearing dialkylsilyl (-SiR2H) side substituents has been synthesized by Sonogashira cross-coupling reactions of 1,4-diethynyl-2,5-bis(dialkylsilyl)benzene and diiodoarylene compounds. Their photophysical properties in solution have been studied. All of the polymers showed intense fluorescence with high quantum yield. Compared with their analogues containing para-phenylene units, the polymers with meta-phenylene units in the main chain showed absorption and emission maxima at shorter wavelengths, whereas the polymers having thiophenylene units in their backbones showed bathochromically shifted spectra. For polymers having the same conjugated parent backbone, silyl substituents have been found to exert negligible effect on their photophysical properties. (C) 2009 Elsevier Ltd. All rights reserved.