Optical and Electrical Characterization of Polymers Obtained by Electro-Oxidation of [1] Benzothieno [3,2-b] Indole Derivatives

Abstract

New polymers have been produced by electrochemical oxidation of monomers derived from [1] benzothieno [3,2-b] indole. Acid-base equilibria involving heterocyclic nitrogen and protons produced by electrolysis have been detected. The spectra of polymer films deposited on ITO electrodes show bands in the visible and NIR regions. The electrical conductivity ranges from 10⁻⁶ to 10⁻⁴ S cm⁻¹, depending on the substance and the preparation conditions, and increases with the temperature.

Key Words:

• [1] benzothieno [3,2-b] indole
• electro-oxidation
• electropolymerization
• electrical conductivity
• absorption spectra.