Synthesis and Thin-Film Transistor Performance of Poly(4,8-didodecylbenzo[1,2-b:4,5-b‘]dithiophene)

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Abstract

The synthesis of novel regioregular poly(4,8-didodecylbenzo[1,2-b:4,5-b‘]dithiophene) and its use as a semiconductor in organic thin-film transistors (OTFTs) are described. The polymer was prepared from 2,6-dibromo-4,8-didodecylbenzo[1,2-b:4,5-b‘]dithiophene by a dehalogenative coupling polymerization. A field-effect mobility of ∼0.012 cm2 V-1 s-1 and a current on/off ratio of ∼2.5 × 105 have been obtained with OTFTs using this polymer semiconductor.

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