Molecular Modification of 2,6-Diphenylbenzo[1,2-b:4,5-b′]dichalcogenophenes by Introduction of Strong Electron-withdrawing Groups: Conversion from p- to n-Channel OFET Materials
摘要:
2,6-Diphenylbenzo[1,2-b:4,5-b′]dithiophene (DPh-BDT) 和 -diselenophene (DPh-BDS) 作为 p 沟道半导体材料,通过在所附苯基中引入氟基、氰基或三氟甲基进行了改性。在对使用这些改性化合物制造的有机场效应晶体管进行检查时发现,三氟甲基取代的 DPh-BDT 和 BDS 衍生物可用作 n 沟道半导体,电子迁移率分别高达 0.044 和 0.10 cm2 V-1 s-1。
Benzodichalcogenophenes with Perfluoroarene Termini
作者:Yongfeng Wang、Sean R. Parkin、Mark D Watson
DOI:10.1021/ol801569m
日期:2008.10.16
Benzodichalcogenophenes are functionalized at their termini via SNAr reactions of their bismetalates with perfluoroarenes. The identities of X, Y, and W are varied to study the effects on LUMO energy levels and crystallization motif. X-ray crystallography reveals that nearly all new derivatives crystallize with coplanar ring systems within slipped 1D or 2D pi-stacks.