Alternating Tetrafluorobenzene and Thiophene Units by Direct Arylation for Organic Electronics
作者:Xiaoping Cui、Chengyi Xiao、Wei Jiang、Zhaohui Wang
DOI:10.1002/asia.201900163
日期:2019.5.2
Direct arylation represents an attractive alternative to the conventional cross‐coupling methods because of its step‐economic and eco‐friendly advantages. A set of simple D–A oligomeric molecules (F‐3, F‐5, and F‐7) by integrating thiophene (T) and tetrafluorobenzene (F4B) as alternating units through a direct arylation strategy is presented to obtain high‐performance charge‐transporting materials
直接芳基化代表了传统交叉耦合方法的一种有吸引力的替代方法,因为它具有步骤经济性和生态友好性的优点。通过直接芳基化策略,通过结合噻吩(T)和四氟苯(F4B)作为交替单元,提出了一组简单的D–A低聚物分子(F-3,F-5和F-7),以获得高性能电荷运输材料。单晶分析表明,它们的人字形排列是通过强烈的CH-⋅⋅⋅π相互作用驱动的。目睹了基于单晶微板/色带的出色的空穴传输效率,并且更大的π共轭和D–A组成赋予了更高的迁移率。因此,平均迁移率为1.31 cm 2 V-1 小号-1和2.44厘米的最大迁移2 V -1 小号-1为F-7分别实现,提供了通过设计简单d-A低聚系统,以获得高性能材料的有效途径。