Synthesis and characterization of poly(aniline-co-o-toluidine) copolymer

Poly(aniline-co-o-toluidine) copolymer has been synthesized by two techniques — chemical and electrochemical copolymerization of aniline with o-toluidine monomer. This copolymer is soluble in common organic solvents like N-methyl pyrrolidinone (NMP), chloroform, tetrahydrofuran (THF), dimethylformamide (DMF) and dimethylsulphoxide (DMSO), etc. The conductivity of copolymer is found to be in a range (e.g., when doped with 1.0 M HCl) ranging from ca. 10 S/cm for homopolymer of aniline to ca. 0.1 S/cm for o-toluidine. The characterization of copolymer has been carried out using cyclic voltametry, FTIR and UV–VIS techniques.