title: Quinoidal naphtho[1,2-b:5,6-b']dithiophenes for solution-processed n-channel organic field-effect transistors.
abstract: A series of new quinoidal naphthodithiophenes, 2,7-bis(α,α-dicyanomethylene)-2,7-dihydronaphtho[1,2-b:5,6-b']dithiophenes, in which all the four fused aromatic rings are incorporated into the quinoidal system, were synthesized and evaluated as an n-channel organic semiconductor. Solution-processed field-effect transistors exhibited typical n-channel transistor characteristics with the mobility as high as 0.1 cm(2) V(-1) s(-1), which is higher by more than 1 order of magnitude than those reported for isomeric quinoidal naphthodithiophenes having a naphthoquinoidal structure.
authors.affiliation: Emergent Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.
authors.forename: Takamichi
authors.initials: T
authors.lastname: Mori
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Yanai
authors.forename: Itaru
authors.initials: I
authors.lastname: Osaka
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya