Designing Thermally Stable Conjugated Polymers with Balanced Ambipolar Field-Effect Mobilities by Incorporating Cyanovinylene Linker Unit
作者:Jun-Mo Park、Sang Kyu Park、Won Sik Yoon、Jin Hong Kim、Dong Won Kim、Tae-Lim Choi、Soo Young Park
DOI:10.1021/acs.macromol.5b02761
日期:2016.4.26
We present a developed highly balanced and thermally stable ambipolar semiconducting polymer PBCDC consisting of diketopyrrolo[3,4-c]pyrrole and benzo[1,2-b:4,5-b′]dithiophene building blocks connected by a cyanovinylene linker unit. Stabilization of the frontier molecular orbitals and delocalization of the LUMO on the whole structural unit were realized by introducing the strong electron-withdrawing
我们提出了一个开发高度平衡和热稳定的双极半导体聚合物PBCDC选自二酮吡咯并[3,4-的Ç ]吡咯和苯并[1,2- b:4,5- b′]通过噻吩基亚乙烯基接头单元连接的二噻吩结构单元。通过引入强吸电子的氰基亚乙烯基连接基,可以实现前沿分子轨道的稳定和LUMO在整个结构单元上的离域。除了这种电子效应外,还通过氰基亚乙烯基连接基的存在来显着控制聚合物膜的分子堆积和结晶度,该连接基在不同的退火温度下均保持不变。由于氰基亚乙烯基的这些电子和结构作用的结果,基于该有机场效应晶体管PBCDC表现出高度平衡孔和μ的电子迁移率小时,最大〜0.2厘米2 V -1小号-1和μe ,max〜0.2 cm 2 V –1 s –1,它们实际上与80-250°C范围内的退火温度无关。