Mobility of long-lived fullerene radical in solid state and nonlinear temperature dependence

Yoko Abe; Hideyuki Tanaka; Yunlong Guo; Yutaka Matsuo; Eiichi Nakamura

doi:10.1021/ja500340f

Mobility of long-lived fullerene radical in solid state and nonlinear temperature dependence

J Am Chem Soc. 2014 Mar 5;136(9):3366-9. doi: 10.1021/ja500340f. Epub 2014 Feb 25.

Authors

Yoko Abe¹, Hideyuki Tanaka, Yunlong Guo, Yutaka Matsuo, Eiichi Nakamura

Affiliation

¹ Department of Chemistry, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 112-0033, Japan.

PMID: 24533464
DOI: 10.1021/ja500340f

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.