Correlation between electron spin resonance and dc conductivity data of polypyrrole, poly(N-methyl pyrrole-pyrrole), and poly(N-methyl pyrrole)

Abstract

The dc conductivity, dielectric constant, and electron spin resonance measurements have been performed on samples of polypyrrole, poly(N-methyl pyrrole-pyrrole), and poly(N-methyl pyrrole) having different BF4− concentrations in the temperature range 77–350 K. Different parameters evaluated from these measurements support the existence of Mott’s variable range hopping mechanism in these systems.