Redox Behavior and Electrochromic Properties of Polypyrrole Films in Aqueous Solutions
TLDR
In this article, the change in film color which occurs in the redox reaction of the film was investigated in detail as a function of electrode potential and the charge consumed in the reaction.Abstract:
Polypyrrole films prepared by anodic polymerization of pyrrole on Pt or SnO2-coated glass show redox behavior in aqueous electrolyte solutions containing a supporting electrolyte alone. Transfer of electrolyte anions into and from the film is involved in the redox reaction similarly with acetonitrile solutions already reported. Insertion of divalent anions into the film occurs in two steps but that of monovalent anions in one step, as judged from corresponding cyclic voltammograms. The change in film color which occurs in the redox reaction of the film was investigated in detail as a function of electrode potential and the charge consumed in the redox reaction. Polypyrrole is a promising material for electrochromic display devices.read more
Citations
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Studies on anion exchange membranes having permselectivity for specific anions in electrodialysis — effect of hydrophilicity of anion exchange membranes on permselectivity of anions
TL;DR: Permselectivity of specific anions through the anion exchange membranes is governed mainly by the balance of hydration energy of anions with hydrophilicity of the membranes, partially by hydrated ionic size of the anions, except the membranes having an oppositely charged layer on the membrane surface.
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Studies on cation-exchange membranes having permselectivity between cations in electrodialysis
TL;DR: Electrodialysis in the presence of chelate-forming agents is effective on the selective permeation of specific cations that have low complex formation constants with the agents through the membrane without any decrease in the current efficiency.
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A Nanocellulose Polypyrrole Composite Based on Microfibrillated Cellulose from Wood
TL;DR: The straightforwardness of the fabrication of the present nanocellulose composites should significantly facilitate industrial manufacturing of highly porous, electroactive conductive paper materials for applications including ion-exchange and paper-based energy storage devices.
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Charge-controllable polypyrrole/polyelectrolyte composite membranes
TL;DR: In this paper, an anionic polyelectrolyte (PE, an immobilized polymer dopant) incorporated in Pyrrole was not released from the PPy matrix even when PPy was reduced electrochemically.
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Preparation and electrocatalytic properties of conducting films of polypyrrole containing platinum microparticulates
Steven Holdcroft,B. Lionel Funt +1 more
TL;DR: In this article, metal particles were dispersed in electrically conducting polymer films in order to achieve multi-electron transfer processes in a three-dimensional matrix, and the electrocatalytic reduction of oxygen was investigated by rotating disk electrode studies with these films.
References
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Electrochemistry of conducting polypyrrole films
TL;DR: In this paper, the same authors showed that polypyrrole, poly-N-methylpyrron and poly-phenyl pyrrole polymers can be electrochemically driven between the oxidized (conducting) form and the neutral (insulating) form.
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