XPS studies of some chemically synthesized polypyrrole-organic acceptor complexes

Abstract

X-ray photoelectron spectroscopy (XPS) studies have been performed on polypyrrole-2,3-dichloro-5,6-dicyano-p-benzoquinone (PPY-DDQ) and polypyrrole-tetrachloro-o-benzoquinone (PPY-chloranil) complexes prepared via the simultaneous chemical polymerization and oxidation of pyrrole by the respective acceptor. XPS data suggested that the charge transfer interactions both complexes probably proceeded further than the pure formation of a molecular complex. The negative charges of both organic anions were mainly localized on the oxygen and the chlorine atoms and to some extent on the nitrogen of DDQ.