Journal ArticleDOI
Quartz Crystal Microbalance Study: Ionic Motion Across Conducting Polymers
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TLDR
In situ monitoring of mass change was performed during electrochemical growth and redox cycling of a conducting polymer(polypyrrole) on a quartz crystal microbalance as mentioned in this paper, which showed both apparent anion and cation motion during the redox process.Abstract:
In situ monitoring of mass change was performed during electrochemical growth and redox cycling of a conducting polymer(polypyrrole) on a quartz crystal microbalance. For the polypyrrole films grown with large polymeric anions(poly(4-styrenesulfonate) and polyvinylsulfonate), mostly cations and solvent molecules were inserted and removed to compensate charge in polypyrrole. The films formed with medium-sized anions (tosylate) showed both apparent anion and cation motion during the redox process. The films prepared in the presence of small anions (ClO 4 − and BF 4 − ) showed mostly anion motion, but apparent cation motion also became significant for higher oxidation and/or reduction stateread more
Citations
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Organic mixed ionic-electronic conductors.
TL;DR: Current understanding of the processes occurring in organic mixed ionic–electronic conductors and their structure–property relations are described, and recent approaches that extend fundamental understanding and contribute to the advancement of materials are highlighted.
Journal ArticleDOI
Microfabrication of PPy microactuators and other conjugated polymer devices
TL;DR: In this paper, the procedures for doing this are described, focusing on the microfabrication of polypyrrole microactuators, and other methods for the deposition and patterning of conjugated polymers are reviewed.
Journal ArticleDOI
Volume Change in Polypyrrole Studied by Atomic Force Microscopy
TL;DR: In this paper, an atomic force microscopy was used to examine the expansion and contraction of films of polypyrrole doped with dodecylbenzenesulfonate, which revealed that the film thickness increased by over 35% in the reduced state compared to the oxidized state.
Journal ArticleDOI
Microactuators toward microvalves for responsive controlled drug delivery
TL;DR: In this paper, the authors demonstrate that it is possible to apply artificial muscle for the fabrication of microactuator valves for responsive controlled drug delivery, and demonstrate that the largest actuation was obtained for the blend consisting of polyaniline and poly(2-hydroxyethylmethacrylate)-poly(N-vinylpyrrolidinone).
Journal ArticleDOI
Electrochemical synthesis of polypyrrole in ionic liquids
Jennifer M. Pringle,John Efthimiadis,Patrick C. Howlett,Jim Efthimiadis,Douglas R. MacFarlane,Adrian B. Chaplin,Simon B. Hall,David L. Officer,Gordon G. Wallace,Maria Forsyth +9 more
TL;DR: In this paper, the use of ionic liquids as the growth medium for polypyrrole films has been investigated, which results in significantly altered film morphologies and improved electrochemical activities.
References
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A linear sweep voltammetry theory for irreversible electrode reactions with an order of one or higher. II, Experimental results
D. L. Piron,H. Kohler,N. Massé +2 more
TL;DR: In this paper, linear sweep voltammetry was used to determine the reaction order and the transfer coefficient for the oxidation reaction of to, using platinum and lead oxide as substrates.