High-Performance Ambipolar Polymers Based on Electron-Withdrawing Group Substituted Bay-Annulated Indigo
作者:Jie Yang、Yaqian Jiang、Zeyi Tu、Zhiyuan Zhao、Jinyang Chen、Zhengran Yi、Yifan Li、Shuai Wang、Yuanping Yi、Yunlong Guo、Yunqi Liu
DOI:10.1002/adfm.201804839
日期:2019.2
an effective strategy to improve their electron mobilities by introducing electron‐withdrawing groups (EWGs, such as F, Cl, or CF3) into the polymer backbone. However, the introduction of different EWGs always requires a different synthetic approach, leading to additional arduous work. Here, an effective two‐step method is developed to obtain EWG substituted bay‐annulated indigo (BAI) units. This method
对于供体-受体共轭聚合物,通过将吸电子基团(EWG,例如F,Cl或CF 3)引入聚合物主链,是提高其电子迁移率的有效策略。但是,引入不同的EWG总是需要不同的综合方法,从而导致额外的艰巨工作。在这里,开发了一种有效的两步法来获得EWG取代的月季靛(BAI)单位。此方法可有效地将各种EWG(F,Cl或CF 3)引入BAI的不同取代位置。基于此方法,EWG取代了BAI受体,包括2FBAI,2ClBAI和2CF 3BAI,是首次报道。此外,还开发了PBAI-V,P2FBAI-V,P2ClBAI-V和P4OBAI-V四种聚合物。所有聚合物均显示出双极性传输性质。特别是,P2ClBAI-V表现出显着的空穴迁移率和电子迁移率,分别为4.04和1.46 cm 2 V -1 s -1。这些迁移率是基于BAI的聚合物的最高价值。