title: High-performance electron-transporting polymers derived from a heteroaryl bis(trifluoroborate).
abstract: In this communication, we report that dipotassium aryl bis(trifluoroborate)s make stable and easy-to-purify yet reactive monomers under Suzuki polycondensation reactions. A bis(trifluoroborate) of 2-alkylbenzotriazole was prepared successfully and copolymerized with dibromobenzothiadiazole in the presence of a Pd catalyst and LiOH, yielding high molecular weight conjugated polymers. This polymer (P1) composed of all electron-accepting units shows excellent electron-transport properties (μ(e) = 0.02 cm(2) V(-1) s(-1)), which proves the value of the aryl bis(trifluoroborate) monomers and suggests that many other types of semiconducting polymers that could not be accessed previously can be synthesized using this approach.
authors.affiliation: Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA.
authors.forename: Jin-Kyun
authors.initials: JK
authors.lastname: Lee
authors.forename: Michael C
authors.initials: MC
authors.lastname: Gwinner
authors.forename: Reinhard
authors.initials: R
authors.lastname: Berger
authors.forename: Carol
authors.initials: C
authors.lastname: Newby
authors.forename: Rudolf
authors.initials: R
authors.lastname: Zentel
authors.forename: Richard H
authors.initials: RH
authors.lastname: Friend
authors.forename: Henning
authors.initials: H
authors.lastname: Sirringhaus
authors.forename: Christopher K
authors.initials: CK
authors.lastname: Ober
mesh_terms: D001881:Borates / Q000737:chemistry*; D004579:Electron Transport; D054879:Halogenation; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D014173:Transistors, Electronic; D014230:Triazoles / Q000737:chemistry
chemical_list: D001881:Borates; D011108:Polymers; D014230:Triazoles; C012771:benzotriazole