Synthesis and Characterization of Conducting Graft Copolymers Based on Oligophenols

Oligo‐2‐aminophenol (OAF) was synthesized with oxidative polycondensation of 2‐aminophenol and hydrogen peroxide in an aqueous alkaline medium at 80°C. Oligo‐2‐aminophenol with thiophene side groups (TOAF) was obtained by the reaction of OAF and thiophene‐3‐acetic acid. Graft copolymers of TOAF and pyrrole were synthesized by electrochemical polymerization in p‐toluene sulfonic acid (PTSA)/water medium. Characterization of the graft copolymer (TOAF‐g‐Py), was carried out by combination of techniques including thermal gravimetry (TGA), cyclic voltametry, size‐exclusion chromatography, 1H‐NMR and FTIR. The conductivities were measured by the four‐probe technique.