ELECTROCHEMICAL PROPERTIES OF DODECYLBENZENESULFONIC ACID - DOPED POLYANILINE FILM IN VARIOUS ORGANIC ELECTROLYTE-SOLUTIONS

The electrochemical characteristics of chemically dodecylbenzenesulfon ic acid-doped polyaniline film (PAn-DBSA) were investigated in various organic electrolyte solutions containing LiClO4 by cyclic voltammetry and AC impedance spectroscopy. The PAn-DBSA film electrode showed ele ctrochemical reversibility in the order of a mixture of propylene carb onate (PC)/1,2-dimethoxyethane (DME, by 50 % vol), a mixture of PC/eth ylene carbonate (EC, by 50 % mel.), and PC containing 1 M LiClO4. The viscosity and dielectric constant of the solvents were responsible for the different electrochemical reversibility. The electrochemical redo x process was proved to change the microstructure of PAn-DBSA film fro m partially crystalline to amorphous states.