Multi-layered type hybrid glass/polypyrrole composite

Multilayer organic xerogel-polypyrrole composites have been prepared by alternate successive treatments of a glass substrate with a siloxane functionalized pyrrole, pyrrole, oxidant, and a sol precursor of the xerogel. An increase of the conductivity is seen upon the first depositions, but increasing the deposit numbers over three fourfold layers does not lead to a further improvement of the conductivity. The loss of conductivity upon aging in air of the composites is weaker than in the case of ordinary unprotected polypyrrole. (C) 1998 Published by Elsevier Science S.A. All rights reserved.