Composites of Electronically Conductive Polyaniline with Poly acrylate - Silica Hybrid Sol-Gel Materials

Abstract

A series of new composite materials that consist of electronically conducting polyaniline and polyacrylate-silica hybrid sol-gel network have been prepared via the sol-gel reactions of the precursor polymer, polyfmethyl methaciylate-co-3-(trimethoxysilyl)propyl methacrylate], in the presence of camphorsulfonic acid-doped polyaniline in m-cresol solution. These materials as coatings can be tailored by varying the composition to have an excellent adhesion to inorganic substrates such as silica glass and indium-tin oxide and a reasonably high conductivity. The adhesion and durability of the new composites as the electroactive coatings on indium-tin oxide electrode are much superior to those of the conventional polyaniline system under repeated electric potential cycling conditions. The modulus of the composite films was also found to be relatively greater than that of the polyaniline films. © 1995, American Chemical Society. All rights reserved.