Electrochemical Synthesis and Characterization of Poly(o‐Anisidine)/Dextran Composite Film

ABSTRACT In this study, Poly(o‐anisidine)/dextran composite film was electrochemically synthesized on a platinum electrode using the cyclic voltammetry technique. Characterization of the synthesized composite film was conducted using FT‐IR (Fourier transform infrared) analysis, UV–Vis (Ultraviolet–visible) spectroscopy, 1 H‐NMR (nuclear magnetic resonance) spectroscopy, CV (cyclic voltammetry), and TG‐DTG (thermogravimetric analysis‐differential thermogravimetric analysis) techniques. Based on the spectroscopic analysis results, a possible chemical structure for the composite was proposed. The surface morphology of the composite film was examined using SEM (scanning electron microscope), which revealed that the composite film homogenously covered the surface of the platinum electrode. Solubility tests showed that the composite dissolved in common organic solvents, with DMSO (dimethyl sulfoxide) identified as the most effective. TG‐DTG analysis showed that the composite film exhibited good thermal stability and distinct thermal behavior compared to the poly(o‐anisidine) homopolymer. Furthermore, electrochemical studies demonstrated that the composite possessed high electrochemical stability, good redox behavior, and high electroactivity.