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Published on: January 10, 2017
Synthesis of Semiconducting Polymers through Soluble Precursor Polymers with Thermally Removable Groups and Their
Taisuke Uemura1, Masashi Mamada1, Daisuke Kumaki1
1Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510 Japan.
Abstract:
Novel semiconducting polymers consisting of thiophene and anthracene units without alkyl groups were successfully synthesized through soluble precursor polymers and applied to the organic thin-film transistors (OTFTs). Thermal elimination of leaving groups from the precursor polymers by retro Diels-Alder reaction was proved by thermogravimetric analysis (TGA), FT-IR, and UV-vis spectroscopy. The resulting films of the semiconducting polymers showed good surface morphologies even after thermal elimination, resulting in good semiconducting behavior with mobility of 0.015 cm2 V-1 s-1 in the typical top-contact OTFT. In addition, the devices based on these polymers are stable under ambient conditions and maintained good transistor performance even after being stored in air for 2 months.
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