title: Synthesis, properties, and OFET characteristics of 5,5'-di(2-azulenyl)-2,2'-bithiophene (DAzBT) and 2,5-di(2-azulenyl)-thieno[3,2-b]thiophene (DAzTT).
abstract: Two azulene-based π-conjugated systems, 5,5'-di(2-azulenyl)-2,2'-bithiophene and 2,5-di(2-azulenyl)-thieno[3,2-b]thiophene, were constructed via Suzuki-Miyaura cross-coupling reactions. The crystal structures of both revealed an edge-to-face orientation in a well-defined herringbone packing. The molecules stood nearly perpendicular to the substrate in the film form, with features of an organic field-effect transistor at hole mobilities of up to 5.0 × 10(-2) cm(2) V(-1) s(-1).
authors.affiliation: Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Yamaguchi
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Maruya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Katagiri
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Nakayama
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Ohba