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Abstract In this study, conductive homopolymers of aniline and anthranilic acid were synthesized chemically and electrochemically in acidic solution and their properties were analyzed. Studies of chemical and electrochemical co-polymerization of aniline and anthranilic acid with carboxylic group were also performed. Chemical polymerization produces polymers in the form of powder while electrochemical polymerization leads to form homogeneous films. Chemical polymerization and doping process occurs concurrently in a single step. IR spectra and 1H NMR were taken in order to analyze the structural properties of the resulting polymers. The crystallinity of the samples was examined by powder X-ray diffraction technique. The obtained results reveal the amorphous nature of synthesized P(ANA-co-ANI) copolymer while PANI and PANA are semicrystalline in structure. The thermal properties of chemically prepared polymers were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Thermo gravimetric analysis results indicated that the decomposition of the two homopolymers and the copolymer of them involves three stages. The surface morphology of the resulting polymers was characterized by scanning electron microscope (SEM). The specific capacities (Sp.C) of the chemically prepared polymers were determined. Sp.C of the PANA-PANI co-polymer reaches up to 1856 Fg−1. The conductive polymers aniline and anthranilic acid were then synthesized electrochemically under a nitrogen atmosphere using a potentiostat. The conducting polymers were deposited electrochemically using cyclic voltammetry (CV). Initially, the oxidation potential values of these monomer solutions were determined by CV. The surface morphology of the resulting homo and co-polymer films was characterized by scanning electron microscope and the effect of monomers molar ratios on specific capacity were characterized using cyclic voltammetry in acidic and neutral solutions. Sp.C of the electrochemically prepared polymers were determined in both acidic and neutral medium. Based on the resulting specific capacity data, it was concluded that PANA has higher specific capacity than PANI. SEM images showed that the morphology of polymer films was homogeneous and the particle size in the range of 150-250 nanometers |