Modulation of the interfacial electrochemistry of surfactant-functionalised polypyrrole chemical sensor systems

► In this study, the effects of anionic and neutral surfactants on the redox properties of electrochemically synthesized polypyrrole were investigated. ► These surfactants were observed to contribute towards electrochemical kinetics of polypyrrole. ► This observation was supported by calculating the rate constants and diffusion coefficients for the different systems under study. ► The values for rate constants and diffusion coefficients obtained from cyclic voltammetry and electrochemical impedance spectroscopy were in good agreement.