Alkylated selenophene-based ladder-type monomers via a facile route for high performance thin-film transistor applications

We report the synthesis of two new selenophene containing ladder-type monomers, cyclopentadiselenophene and (CDS) and indacenodiselenophene (IDSe), via a facile route. Co-polymers with benzothiadiazole (BT) were prepared in high yield by Suzuki polymerization to afford co-polymers which exhibited excellent solubility in a range of non-chlorinated solvents.Thin-film transistors were fabricated using environmentally benign, non-chlorinated solvents with the CDS and IDSe co-polymers exhibiting hole mobility up to 0.15 and 6.4 cm²/Vs, respectively.

本研究报道了通过简便合成路线制备两种新型含硒吩（selenophene）的梯型单体：环戊二硒吩（cyclopentadiselenophene，缩写CDS）与茚并二硒吩（indacenodiselenophene，缩写IDSe）。采用铃木聚合（Suzuki polymerization）反应，以高产率制备得到与苯并噻二唑（benzothiadiazole，缩写BT）的共聚物，该类共聚物在多种非氯代溶剂中展现出优异的溶解性。本研究采用环境友好的非氯代溶剂制备薄膜晶体管，其中基于CDS与IDSe的共聚物分别展现出最高达0.15与6.4 cm²/(V·s)的空穴迁移率。