title: Vinylene-Linked Oligothiophene-Difluorobenzothiadiazole Copolymer for Transistor Applications.
abstract: The synthesis of the novel donor-acceptor monomer 4,7-bis[(E)-2-(5-bromo-3-dodecylylthiophen-2-yl)ethenyl]-5,6-difluoro-2,1,3-benzothiadiazole (FBT-V2T2) is reported. Polymerization with 4,4'-ditetradecyl-5,5'-bistrimethylstannyl-2,2'-bithiophene afforded a highly crystalline polymer that aggregated strongly in solution. Polymer films were well ordered resulting in high performance field-effect transistors with low onset voltages, negligible hysteresis, high channel current on/off ratios, and peak hole mobilities of up to 0.5 cm2V-1s-1. Notably the transistors exhibited close to ideal behavior with extracted mobilities almost independent of gate of voltage.
authors.affiliation: Department of Chemistry and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Abby
authors.initials: A
authors.lastname: Casey
authors.affiliation: Department of Chemistry and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.|Department of Physics and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Yang
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Materials Science and Engineering, Monash University , Wellington Road, Clayton, VIC 3800, Australia.
authors.forename: Eliot
authors.initials: E
authors.lastname: Gann
authors.affiliation: Department of Chemistry and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Joshua P
authors.initials: JP
authors.lastname: Green
authors.affiliation: Department of Materials Science and Engineering, Monash University , Wellington Road, Clayton, VIC 3800, Australia.
authors.forename: Christopher R
authors.initials: CR
authors.lastname: McNeill
authors.affiliation: Department of Physics and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Anthopoulos
authors.affiliation: Department of Chemistry and Centre for Plastic Electronics, Imperial College London , London SW7 2AZ, U.K.
authors.forename: Martin
authors.initials: M
authors.lastname: Heeney
keywords: conjugated polymers; donor−acceptor copolymer; field-effect transistor; fluorination; organic semiconductors