Gas sensitivity of polypyrrole films to NO2
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 84 (5) , 1587-1592
- https://doi.org/10.1039/f19888401587
Abstract
We have shown that the gas sensitivity of electropolymerized polypyrrole films to NO2 in an N2 atmosphere at room temperature is enhanced by the elimination of dopant anions using an electrochemical reduction procedure. Fourier-transform infrared spectra of polypyrrole films which had been reduced and then exposed to NO2 showed that NO– 2 species were produced by the exposure to NO2, indicating that the gas sensitivity results mainly from chemical doping by NO2.Keywords
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