title: Benzotrithiophene--a planar, electron-rich building block for organic semiconductors.
abstract: Several functionalized benzo[1,2-b:3,4-b':5,6-d'']trithiophenes have been synthesized and characterized. The fully planar and highly electron-rich material shows great promise as the donor constituent in donor-acceptor type copolymers for use in organic electronics. As a proof of concept, a copolymer with the electron acceptor, 2,1,3-benzothiadiazole, has been prepared. Side-chain modifications have been employed to adjust both the electron-rich character of the monomer and the solubility and processability of the polymer.
authors.affiliation: Department of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, UK. c.nielsen@imperial.ac.uk
authors.forename: Christian B
authors.initials: CB
authors.lastname: Nielsen
authors.forename: Jamie M
authors.initials: JM
authors.lastname: Fraser
authors.forename: Bob C
authors.initials: BC
authors.lastname: Schroeder
authors.forename: Junping
authors.initials: J
authors.lastname: Du
authors.forename: Andrew J P
authors.initials: AJ
authors.lastname: White
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhang
authors.forename: Iain
authors.initials: I
authors.lastname: McCulloch