title: Mobility of long-lived fullerene radical in solid state and nonlinear temperature dependence.
abstract: A singly bonded fullerene dimer [C60R]2 in the solid state thermally generates a pair of fullerene radicals C60R(•) that dissociate reversibly and irreversibly upon heating and cooling of the solid. The temperature dependence of the electron mobility of the solid shows striking nonlinearity, caused by the dissociation of a strongly interacting radical pair into two free radicals, which interact with the neighboring fullerene molecules to increase the mobility 10 times to a value of 1.5 × 10(-3) cm(2) V(-1) s(-1). The nonlinearity is due to the plastic crystalline nature of fullerene crystals.
authors.affiliation: Department of Chemistry, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 112-0033, Japan.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Abe
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Guo
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Eiichi
authors.initials: E
authors.lastname: Nakamura