Electrochemical formation of cation-exchanging polypyrrole films within various hydrophilic–hydrophobic domains
✍ Scribed by E. Shouji; Y. Okamoto; F. Ozaki; K. Naoi
- Book ID
- 102660030
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 539 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1042-7147
No coin nor oath required. For personal study only.
✦ Synopsis
The electrochemical polymerization technique has been successfully applied to produce conducting polymer film of controlled ion exchange properties. Polypyrrole films were prepared by electro-oxidative polymerization with doping some alkylsulfonates or Nafion. The ion exchange characteristics across polypyrrole films were examined by means of a novel electrochemical technique, namely, the in situ electrochemical quartz crystal microbalance (EQCM) method. According to EQCM measurements, exchanging ion species was found to be successfully controlled by changing the hydrophilic-hydrophobic balance of the incorporated sulfonated-based dopants. The film's characteristics became anion-to cation-exchanging as the dopants became more hydrophobic in nature. The polypyrrole-Nafon(poly(perfZuoroethy1ene sulfonate)) composite film became to be a complete cafion exchanger.