Synthesis and characterisation of π-conjugated polymer/silica hybrids containing regioregular ionic polythiophenes
作者:Sébastien Clément、Akim Tizit、Simon Desbief、Ahmad Mehdi、Julien De Winter、Pascal Gerbaux、Roberto Lazzaroni、Bruno Boury
DOI:10.1039/c0jm03598j
日期:——
Highly regioregular poly3-[n-(1-methylimidazolium-3-yl)alkyl]thiophene-2,5-diyl bromide} (n = 4, 6, 8) (10â12) has been prepared by reaction of poly[3-(n-bromoalkyl)thiophene-2,5-diyl] (n = 4, 6, 8) (7â9) with 1-methylimidazole. Acid-catalyzed hydrolysis and polycondensation of tetraethoxysilane (TEOS) were carried out in the presence of these polymers. The strong ionic interactions between the imidazolium moieties of the polythiophene and the charged silanol groups enabled the homogeneous dispersion of the polythiophene within silica. The resulting composite materials were characterised by SEM, TEM and tapping mode atomic force microscopy (TM-AFM). The optical and thermal properties were investigated by UV and TGA measurements.
通过聚3-[n-(1-甲基咪唑-3-基)烷基]噻吩-2,5-二基溴}(n = 4, 6, 8)(10â12)与 1-甲基咪唑的反应,制备出了高团聚聚3-[n-(1-甲基咪唑-3-基)烷基]噻吩-2,5-二基溴}(n = 4, 6, 8)(7â9)。在这些聚合物的存在下,四乙氧基硅烷(TEOS)发生了酸催化水解和缩聚反应。聚噻吩的咪唑基团与带电荷的硅醇基团之间强烈的离子相互作用使聚噻吩能够均匀地分散在二氧化硅中。扫描电子显微镜(SEM)、电子显微镜(TEM)和攻丝模式原子力显微镜(TM-AFM)对所制备的复合材料进行了表征。紫外线和热重分析测量了材料的光学和热学特性。