Effect of the Dopant Nature on the Response of Sensor Arrays Based on Polypyrrole |
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| Authors: | O Yu Posudievskii N V Konoshchuk A L Kukla A S Pavlyuchenko V D Pokhodenko |
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| Institution: | (1) L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauky 31, 03028 Kyiv, Ukraine;(2) V. E. Lashkarev Institute of the Physics of Semiconductors, National Academy of Sciences of Ukraine, Prospekt Nauky 41, 03028 Kyiv, Ukraine |
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| Abstract: | The effect of the nature of the dopant on the response of a sensor array based on films of polypyrrole under the influence
of the vapor of various organic solvents was studied. It was found the electric conductivity of the polymer can both increase
and decrease during the action of analytes on electropolymerized films of polypyrrole. It is suggested that the main factors
determining the response of polypyrrole are the morphology of the films and the type of charge carriers in the polymer, which
depend on the nature of the dopant anion, and also the polarity and nucleophilicity/electrophilicity of the analyte. The responses
of polypyrrole and polyaniline are compared, and the effect of the nature of the conducting polymer on them is analyzed.
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Translated from Teoreticheskaya i Eksperimental'naya Khimiya, Vol. 41, No. 5, pp. 265–271, September–October, 2005. |
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| Keywords: | sensor array conducting polymers polypyrrole polyaniline dopant |
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