Substitution Effects on Bipolarons in Alkoxy Derivatives of Poly(1,4-Phenylene-Vinylene)

摘要

Interest in conducting polymers originated from the discovery that theirelectrical conductivity can be varied from an initially insulating state to a highly conducting state through either p-type or n-type doping. Conduction in these systems exhibits quasi-one-dimensional behavior in which the charged excitations of the pi-electron band strongly couple to be polymer backbone. These nonlinear excitations are in the form of confined soliton pairs (polarons and bipolarons) in systems which have a nondegenerate ground state.