Magnetic-Field-Induced Deactivation of Polypyrrole Films in Repeated Redox Cycles
- 1 September 1997
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 70 (9) , 2337-2340
- https://doi.org/10.1246/bcsj.70.2337
Abstract
Magnetic field effects on the durability of anion-doped polypyrrole (PPy/anion) films were studied by measuring successive cyclic voltammograms in a cryocooler-cooled superconducting magnet. The deactivation, which means positive shifts of the anodic peak potential, was observed in PPy/ClO4− and PPy/Cl− films under the magnetic fields of 2 and 5 T. This magnetic-field-induced deactivation has a novel aspect that is an accumulative effect of the magnetic fields. On the other hand, the degradation of PPy/p-toluenesulfonate films, which means a current decrease in the voltammograms, was not affected by the magnetic field of 5 T.Keywords
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