Heteropolyacid/m-cresol system as a primary/secondary dopant combination for polyaniline

The method for the preparation of soluble polyaniline PAn doped with heteropolyacid (HPA), using 12-phosphomolybdic acid (PMA) as an example, was proposed. It is established that new spectral and electrophysical properties of the PAn·PMA are the consequence of secondary doping of PAn with m-cresol. The solubility of the PAn·PMA enables the preparation of conducting composite films with dielectric polymers that allows the variation in conductivity value and the improvement of the mechanical properties of the conducting material.