Diketopyrrolopyrrole-Based Low-Bandgap Conjugated Polymers with Siloxane Side Chains for Electrochromic Applications
作者:Zugui Shi、Wei Teng Neo、Hui Zhou、Jianwei Xu
DOI:10.1071/ch15738
日期:——
A series of conjugated copolymers P1–P3 were synthesized from 3,6-bis(5-bromothiophen-2-yl)-2,5-bis(6-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)hexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione and 2,5-bis(trimethylstannyl)-3,4-dialkoxythiophene or its analogue via Stille coupling reactions, with molecular weights in the range of 13000–18000 g mol–1 and polydispersity indexes of 1.4–1.7. This new type
由3,6-双(5-溴噻吩-2-基)-2,5-双(6-(1,1,1,3,5,5,5,5-七庚甲基三硅氧烷)合成一系列共轭共聚物P1 - P3 -3-基)己基)-2,5-二氢吡咯并[3,4- c ]吡咯-1,4-二酮和2,5-双(三甲基锡烷基)-3,4-二烷氧基噻吩或其类似物,通过Stille偶联反应,分子量范围为13000–18000 g mol –1和多分散指数为1.4-1.7。这种新型的供体-受体聚合物表现出合理的转换速度,有希望的氧化还原稳定性,高的光学对比度和着色效率。尽管在当前阶段,杂化的硅氧烷封端的侧链并未显着改善所得聚合物的整体性能,但硅氧烷基团的独特化学性质将为经过适当的聚合后处理提供交联的可能性,从而为将来微调电致变色膜形态的方法。