Thienoisoindigo-based copolymer with fused thieno[3,2-b]thiophene as a donor in thin film transistor applications with high performance†
Abstract
A new thienoisoindigo (TIG)-based copolymer with thieno[3,2-b]thiophene as a donor is synthesized. The copolymer with a short π–π stacking distance of 3.43 Å exhibits an excellent hole mobility up to 0.69 cm2 V−1 s−1 under optimum conditions. This performance is the record value among reported TIG-based transistors.