Electrical, electronic and thermal studies on poly[(aniline)co(<i>p</i>-methoxyanlline)] and poly [( <i>o</i>-toluidine)co(<i>p-</i>methoxyaniline)]

1423-1427It has been revealed that p-methoxyaniline units could be incorporated in the polyaniline as well as in the poly(o-toluidine) back bones. Copolymers show lower electrical conductivities than polyaniline due to the presence of -OCH3 and –CH3 groups attached to the phenyl units affecting the planarity of systems. Electronic and ESR spectra are in agreement with the electrical properties of the copolymers. ESR spectra reveal that the electrical conductivity of copolymers increase with increase in ΔHpp, decrease in a/b ratio and decrease in 'g' value. Poly[(aniline)co(p-methoxyaniline)] has been observed to be thermally more stable whereas poly(o-toluidine)co(p-methoxyaniline)] less stable than polyaniline