The method of making a pyrrolo bisthiazole homopolymer starts with dissolving a dibrominated pyrrolo[3,2-d:4,5-d']bisthiazole monomer having the formula:
where R is an alkyl group, in anhydrous tetrahydrofuran (THF). Then, the solvated monomer is treated with 1 equivalent of a Turbo-Grignard reagent complex having the formula iPrMgCl·LiCl at 0°C to form a reaction mixture. The reaction mixture is stirred for 1 hour at room temperature, and after stirring, the reaction mixture is refluxed for 24 hours. A conjugated homopolymer product having the formula:
where n is the number of repeating units of pyrrolo[3,2-d:4,5-d']bisthiazole, is recovered from the reaction mixture. The PBTz-based homopolymers showed broad absorption from 450 to 850 nm in thin film and excellent photochemical and thermal stability, making the polymers suitable for lightweight, low cost plastic electronic devices.
制造
吡咯双
噻唑均聚物的方法首先是溶解具有以下式子的二
溴化
吡咯并[3,2-d:4,5-d']双
噻唑单体:
其中 R 为烷基,溶于无
水四氢呋喃 (THF)。然后,在 0°C 下用 1 个等量的 Turbo-Grignard 试剂复合物处理溶解的单体,该试剂复合物的
化学式为 iPrMgCl-LiCl,形成反应混合物。反应混合物在室温下搅拌 1 小时,搅拌后回流 24 小时。共轭均聚物产物的
化学式为
其中 n 为
吡咯并[3,2-d:4,5-d']双
噻唑的重复单元数,从反应混合物中回收。基于 PBTz 的均聚物在薄膜中显示出 450 至 850 纳米的宽吸收范围,以及出色的光
化学和热稳定性,使这种聚合物适用于轻质、低成本的塑料电子设备。