A novel tellurophene-containing conjugated polymer with a dithiophenyl diketopyrrolopyrrole unit for use in organic thin film transistors

A new tellurophene-based π-conjugated polymer, PDTDPPTe, was synthesized. PDTDPPTe exhibits a smaller optical band gap (Egopt = 1.25 eV) than thiophene-based PDTDPPT (Egopt = 1.30 eV). Thin-film transistors comprising PDTDPPTe displayed outstanding performance (μmax = 1.78 cm2 V−1 s−1, Ion/Ioff = 105–6).