π‐Extended Thiazole‐Containing Polymer Semiconductor for Balanced Charge–Carrier Mobilities.

A low‐band gap semiconducting polymer with an acceptor–donor–acceptor architecture is newly designed and synthesized by incorporating a π‐extended thiazole–vinylene–thiazole unit. The resulting thiazole‐containing diketopyrrolopyrrole copolymer exhibits well‐balanced ambipolar characteristics with hole mobility of up to 0.11 cm2 V−1 s−1 and electron mobility of up to 0.30 cm2 V−1 s−1, which are suitable for applications in polymer electronics. [ABSTRACT FROM AUTHOR]