Abstract

Three novel benzodipyrrolinone–bithiophene based donor-acceptor polymers are synthesized and used as p-type semiconductors in organic thin-film transistors (OTFTs). Hole mobility of up to 0.03 cm2 V−1 s−1 is achieved. A new acetal-type branched substituent is introduced to significantly improve the solubility of the resulting polymer.

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