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Synthesis, Characterization and Field-Effect Transistor Performance of Poly[2,6-bis(3-alkylthiophen-2-yl)benzo[1,2-b;4,5-b′]diselenophene]s

✍ Scribed by Mark A.M. Leenen; Fiona Vian; Fabio Cucinotta; Wojciech Pisula; Heiko Thiem; Ralf Anselmann; Luisa De Cola

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 309 KB
Volume: 211
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.201000447

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✦ Synopsis

Abstract

Benzo[1,2‐b:4,5‐b′]diselenophene (BDS) has been incorporated for the first time in a polymer. bis(Stannyl)‐functionalized BDS was copolymerized with 3,3′‐bis(alkyl)‐5,5′‐bithiophenes (dodecyl and tetradecyl side chains) through Stille copolymerization, to yield p‐type polymer semiconductors for organic field‐effect transistor application. The electronic and structural effect of the selenium atoms, compared to sulphur atoms in analogous copolymers, is described. The molecular weight has a decisive influence on the photophysical properties and supramolecular ordering, expressed in field‐effect transistor measurements. Saturation mobilities around 10^−2^ cm^2^ · V^−1^s^−1^ are obtained on standard silicon substrates. magnified image

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