在这项研究中,我们合成了三种二维(2-D)聚噻吩衍生物(PTs),即PTBPTPA,PTStTPA和PTCNStTPA,它们具有三个不同的共轭单元,即联苯(BP),二苯乙烯(St)和氰基苯乙烯(CNSt),分别在聚合物主链中,并在侧链上呈现共轭三苯胺/噻吩(TPATh)部分。此外,我们还合成了三种基于BP,St和CNSt的共轭主链型共轭聚合物(分别为PTBP,PTSt和PTCNSt)。将St和CNSt部分掺入聚合物主链中并附加TPATh单元会在聚合物的共轭骨架内引起高度的分子内电荷转移,从而导致较低的带隙能和最大UV-Vis吸收波长的红移。而且,基于BP,St和CNSt的主链型和2-D PT的最高占据分子轨道的能级低于P3HT,这表明它们可用于制备聚合物太阳能电池(PSC)具有更大的开路电压。由2-D PT和富勒烯衍生物PC的混合物制成的PSC的光伏性能61 BM优于基于主链型聚合物/ PC
Thieno[3,2-b]pyrrole is an effective nonconventional semiconducting building block that could be generated in gram quantities with relatively high overall yields. Three organic semiconductors containing thieno[3,2-b]pyrrole were synthesized in good yields without requiring time-consuming column purifications. The synthesis, optical and electrochemical properties were systematically investigated. 1