title: Alpha,omega-bis(quinquethienyl)alkanes as a pi-dimer model of polythiophene.
abstract: [structure: see text] A series of the title dimeric quinquethiophenes linked with a di- to hexamethylene spacer was synthesized and examined as a pi-dimer model of polythiophene. Upon two-electron oxidation with iron(III) chloride in dichloromethane, they readily form intramolecular pi-dimer species, except for the dimethylene-linked dimer that cannot be bent into a pi-stacked structure.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
authors.forename: Teizi
authors.initials: T
authors.lastname: Satou
authors.forename: Toyofumi
authors.initials: T
authors.lastname: Sakai
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kaikawa
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Otsubo
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Aso