Characterization of the polypyrrole film-piezoelectric sensor combination.
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.
Vigmond
S J
SJ
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 1A1, Canada.
Kallury
K M
KM
Ghaemmaghami
V
V
Thompson
M
M