title: Characterization of the polypyrrole film-piezoelectric sensor combination.
abstract: Polymerization of pyrrole onto the electrode surfaces of thickness-shear-mode acoustic wave sensors at various levels of oxidation has been performed with electrochemical methods. The resulting films of polypyrrole have been characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. Frequency decreases for the polypyrrole-coated sensors exposed to methanol, toluene and ammonia have been evaluated in terms of the various interactions occurring at the polymer surface.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 1A1, Canada.
authors.forename: S J
authors.initials: SJ
authors.lastname: Vigmond
authors.forename: K M
authors.initials: KM
authors.lastname: Kallury
authors.forename: V
authors.initials: V
authors.lastname: Ghaemmaghami
authors.forename: M
authors.initials: M
authors.lastname: Thompson