Studies on polycarbazole-modified electrode and its applications in the development of solid-state potassium and copper(II) ion sensors

Abstract

The electrochemical synthesis of polycarbazole, having better stability and electrochromic activity, in dichloromethane containing 0.1 M tetrabutyl ammonium perchlorate (TBAP), is studied. The polycarbazole matrix obtained by the potentiostatic and potentiodynamic modes of electropolymerization is characterized based on scanning electron microscopy, differential calorimetry, and infrared spectroscopy. De-doping of the polymer by electrochemical reduction in TBAP-free dichloromethane followed by incubation of the polymer film in 1 M aqueous KCl solution for 24 h is studied.