title: Polymers containing rigid benzodithiophene repeating unit with extended electron delocalization.
abstract: Polymers containing a fused benzodithiophene core with phenylethynyl substituents were prepared. The parent poly[4,8-bis(4-pentylphenylethynyl)benzo[1,2-b:4,5-b']dithiophene] was prepared by a Stille coupling. Copolymers with the new core were also obtained by Stille coupling with dibrominated fluorene and carbazole monomers. The obtained polymers had a lower band gap as compared to the related benzodithiophene cores due to the extended electron conjugation. The polymers were also highly fluorescent as observed by high quantum yields.
authors.affiliation: Department of Chemistry, University of Texas at Dallas, MS BE26, Richardson, Texas 75083, USA.
authors.forename: Nadia
authors.initials: N
authors.lastname: Hundt
authors.forename: Kumaranand
authors.initials: K
authors.lastname: Palaniappan
authors.forename: John
authors.initials: J
authors.lastname: Servello
authors.forename: Daniel K
authors.initials: DK
authors.lastname: Dei
authors.forename: Mihaela C
authors.initials: MC
authors.lastname: Stefan
authors.forename: Michael C
authors.initials: MC
authors.lastname: Biewer