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-A
FM)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。