Effect of Cyano Substituents on Electron Affinity and Electron-Transporting Properties of Conjugated Polymers
作者:Michelle S. Liu、Xuezhong Jiang、Sen Liu、Petra Herguth、Alex K.-Y. Jen
DOI:10.1021/ma011790f
日期:2002.4.1
study the effect of cyano substituents on the redox behaviors of conjugated molecules. By introducing the electron-withdrawing functional groups (cyano and dicyanovinyl) onto the phenylene ring, both electron affinity and electrochemical stability of the resulting distyrylbenzenes are greatly enhanced. The results enabled us to design and synthesize a new class of highly electron affinitive, fluorene-based
合成了一系列含氰基的二苯乙烯基苯作为模型化合物,系统地研究了氰基取代基对共轭分子氧化还原行为的影响。通过将吸电子官能团(氰基和二氰基乙烯基)引入亚苯基环,所得二苯乙烯基苯的电子亲和力和电化学稳定性均得到大大提高。结果使我们能够设计和合成一类新型的具有高度电子亲和性的芴基共聚物,这些共聚物含有这些含氰基发色团作为共聚单体。还研究了受体强度和侧链对这些聚合物的电子传输性能的影响。通过适当调整共聚物的组成,可以在统计共聚物中实现高电子亲和力和迁移率的组合,聚(芴基苯并噻二唑-氰基亚苯基亚乙烯基)(PFB-CNPV)。外部量子效率高达0.88%,亮度高达4730 cd / m在使用PFB-CNPV作为发射层的双层发光二极管(LED)中实现了2个目标。