A high-mobility terselenophene and diketopyrrolopyrrole containing copolymer in solution-processed thin film transistorsElectronic supplementary information (ESI) available: Synthetic procedures, NMR, GPC, CV, device fabrication etc. See DOI: 10.1039/c3cc43742f

A new diketopyrrolopyrrole (DPP)-based -conjugated copolymer containing terselenophene units has been successfully synthesized. Its hole mobility reaches around 5.0 cm 2 V 1 s 1 in thin film transistors made from thermally annealed films. This proves that a longer terselenophene unit induced excellent charge transport properties. A new diketopyrrolopyrrole (DPP)-based -conjugated copolymer containing terselenophene units has been successfully synthesized.