AC properties of aniline-1,4-phenylenediamine copolymers

The joint chemical oxidation of aniline with various phenylenediamines yiel ds polyaniline-like materials, electrical properties of which can be contro lled on a submolecular level by the composition of reaction mixture. The de pendence of the complex permittivity as well as of the dielectric modulus o f aniline-1,4-phenylenediamine copolymers on temperature and frequency were measured on samples with various aniline contents. On the basis of experim ental data, a typical energy corresponding to inter-bundle hopping barriers for various copolymer compositions has been estimated. The dependence of a conducting bundle size on composition has also been evaluated.