Vulcanized Aniline Black. Its Electrical Conductivity and Catalysis upon the Decomposition of Hydrogen Peroxide

Abstract

Abstract New semiconductive polymers have been prepared by the vulcanization of the oxidative condensation products of aniline. The polymers vulcanized are infusible black or black-violet powders insoluble in any organic solvent. The spin concentrations of the polymer vulcanized are about 1.5–2.5×1019 spins/g., about ten as much as those of the oxidative condensation products of aniline. The electrical conductivity increases with the increase in the sulfur content; the electrical resistivity at 20°C is 106–109 ohm-cm., and the activation energy is 0.68–1.18eV. The polymers vulcanized have catalytic effects on the decomposition of hydrogen peroxide at 30°C. The catalytic effects of phenothiazine and the oxidative condensation products of aniline are, however, extremely slight. The catalytic ability depends not only on the structure of the polymer vulcanized, but also to some extent on its electrical conductivity.