3,6-Dithiophen-2-yl-diketopyrrolo[3,2-<i>b</i>]pyrrole (isoDPPT) as an Acceptor Building Block for Organic Opto-Electronics
作者:Shaofeng Lu、Martin Drees、Yan Yao、Damien Boudinet、He Yan、Hualong Pan、Jingqi Wang、Yuning Li、Hakan Usta、Antonio Facchetti
DOI:10.1021/ma400568b
日期:2013.5.28
The electron acceptor building block for π-conjugated copolymers, 3,6-dithiophen-2-yl-diketopyrrolo[3,2-b]pyrrole (isoDPPT), was synthesized following two routes. The comparison between isoDPPT and widely investigated 3,6-dithiophen-2-yl-diketopyrrolo[3,4-c]pyrrole (DPPT) in terms of molecular orbital computations, single crystal X-ray diffraction, optical absorption and cyclic voltammogram was utilized
通过两种途径合成了π-共轭共聚物3,6-二噻吩-2-基-二酮吡咯并[3,2- b ]吡咯(isoDPPT)的电子受体结构单元。isoDPPT与广泛研究的3,6-dithiophen-2-yl-diketopyrrolo [3,4- c]的比较就分子轨道计算,单晶X射线衍射,光吸收和循环伏安图而言,]吡咯(DPPT)用于阐明两个核之间的结构和电子结构差异。发现两个单元在固态都是平面的,表现出相似的LUMO能量,但是isoDPPT表现出更深的HOMO能量。通过将isoDPPT与以下结构单元共聚,合成了六种基于isoDPPT的聚合物,其光学带隙范围为1.44至1.76 eV:2,2'-联噻吩(对于P1而言),4,4'-双(2-乙基己基)-二噻吩并[ 3,2- b:2',3'- d ]甲硅烷基(对于P2),3,3′-二十二烷基四噻吩(对于P3),4,8-二十二烷基苯并[1,2- b:4,5-b ']二噻吩(对于P4),4