Magnetic-Field-Induced Deactivation of Polypyrrole Films in Repeated Redox Cycles Magnetic-Field-Induced Deactivation of Polypyrrole Films in Repeated Rodox Cycles
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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/ClO<sub>4</sub><sup>−</sup> and PPy/Cl<sup>−</sup> 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/<i>p</i>-toluenesulfonate films, which means a current decrease in the voltammograms, was not affected by the magnetic field of 5 T.
- Bulletin of the Chemical Society of Japan
Bulletin of the Chemical Society of Japan 70(9), 2337-2340, 1997-09-15
The Chemical Society of Japan