Abstract
The mass transport mechanism of polypyrrole (PPy) and poly(N-methylpyrrole) (PMPy) films in an acetonitrile (AN) solution has been investigated with the cyclic electrochemical quartz crystal microbalance (EQCM) technique. Cations as well as anions take part in ion transport during the redox reaction of PPy films, and the break-in process occurs in the first negative scan. On the other hand, anion transport is dominant during the redox reaction of PMPy films, and no break-in process is observed. Solvent transport takes place in the same direction as cation transport in the case of PPy films, whereas it occurs in the opposite direction to anion transport in the case of PMPy films.
Original language | English |
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Pages (from-to) | 104-109 |
Number of pages | 6 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 468 |
Issue number | 1 |
DOIs | |
State | Published - 17 Jun 1999 |
Event | Proceedings of the 1998 International Symposium on New Trends in Electroanalytical Chemistry - Seoul, S Kor Duration: 10 Sep 1998 → 12 Sep 1998 |
Bibliographical note
Funding Information:The authors are grateful to the Korea Advanced Institute of Science and Technology for financial support of this research.