title: Synthesis and structural analysis of thiophene-pyrrole-based S,N-heteroacenes.
abstract: Fused S,N-heterohexacene 4 was synthesized by applying Pd-catalyzed tandem Buchwald-Hartwig coupling and further functionalized to corresponding acceptor-capped derivatives 5 and 6 showing bond length equalization in the π-conjugated backbone and intense optical transitions. Organic thin film transistors (OTFTs) based on a vacuum-deposited film of 6 exhibit p-channel charge-carrier mobilities as high as 0.021 cm(2) V(-1) s(-1) and current on/off ratios of 10(5).
authors.affiliation: Institut für Organische Chemie II und Neue Materialien, Universität Ulm , Albert-Einstein-Allee 11, 89081 Ulm, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Wetzel
authors.forename: Amaresh
authors.initials: A
authors.lastname: Mishra
authors.forename: Elena
authors.initials: E
authors.lastname: Mena-Osteritz
authors.forename: Andreas
authors.initials: A
authors.lastname: Liess
authors.forename: Matthias
authors.initials: M
authors.lastname: Stolte
authors.forename: Frank
authors.initials: F
authors.lastname: Würthner
authors.forename: Peter
authors.initials: P
authors.lastname: Bäuerle