Organic photovoltaic materials incorporating either chlorine atoms or ester groups have been studied as replacement strategy for fluorinated compounds. However, the characteristics of such materials when used in organic field-effect transistors (OFETs) remain unclear. The present work synthesized three polymers via the copolymerization of diketopyrrolopyrrole (DPP) with monothiophene units having no substituents or incorporating either chlorine atoms or ester groups. All three materials were found to have similar photophysical and electrochemical properties even though their repeating units had different substituents. The maximum hole mobility values for the polymer specimens were determined to be 0.37 cm² V⁻¹ s⁻¹. The introduction of chlorine into the DPP-based polymer generated an amorphous semiconductor material that makes it a very promising candidate for commercial OFETs since its properties are independent of fabrication conditions. The new polymeric semiconductors demonstrated herein suggest the viability of such materials with regard to incorporation in organic field-effect transistors.

已经研究了结合氯原子或酯基团的有机光伏材料作为氟化化合物的替代策略。然而，这些材料在用于有机场效应晶体管 (OFET) 时的特性仍不清楚。目前的工作通过二酮吡咯并吡咯 (DPP) 与没有取代基或引入氯原子或酯基团的单噻吩单元共聚合成了三种聚合物。发现所有三种材料都具有相似的光物理和电化学性质，即使它们的重复单元具有不同的取代基。聚合物样品的最大空穴迁移率值确定为 0.37 cm ²  V ^-1  s ^-1. 将氯引入基于 DPP 的聚合物中会产生一种非晶半导体材料，这使其成为商业 OFET 的非常有希望的候选者，因为其性质与制造条件无关。此处展示的新型聚合物半导体表明此类材料在纳入有机场效应晶体管方面的可行性。