title: A fluorinated phenylene unit as a building block for high-performance n-type semiconducting polymer.
abstract: Copolymers composed of diketopyrrolopyrrole and phenylene units with different numbers of fluorine subsitution are synthesized. When the effect of the number of fluorine substitution on the n-channel transporting property is investigated, the polymer with four fluorine substitutions exhibits the best n-type charge-transporting behavior with an electron mobility of 2.36 cm(2) V(-1) s(1).
authors.affiliation: Department of Materials Science and Engineering, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea.
authors.forename: Jung Ha
authors.initials: JH
authors.lastname: Park
authors.forename: Eui Hyuk
authors.initials: EH
authors.lastname: Jung
authors.forename: Jae Woong
authors.initials: JW
authors.lastname: Jung
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Jo