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EQCM measurements of the ion and solvent flux in thin poly(aniline)–poly(styrenesulfonate) films during redox switching

EQCM measurements of the ion and solvent flux in thin poly(aniline)–poly(styrenesulfonate) films during redox switching
EQCM measurements of the ion and solvent flux in thin poly(aniline)–poly(styrenesulfonate) films during redox switching
The ion and solvent movement accompanying redox cycling of thin (~1 ?m) films of poly(aniline)–poly(styrenesulfonate) were studied using the electrochemical quartz crystal microbalance and the transfer function method. The poly(aniline)–poly(styrenesulfonate) film was found to be acoustically rigid and smooth both during potentiodynamic deposition and during redox cycling in acid solution allowing the calculation of the changes in the mass directly from the variation in XL. We find that during redox cycling in 1 M perchloric or hydrochloric acid electroneutrality of the poly(aniline)–poly(styrenesulfonate) is maintained exclusively by the movement of protons. The oxidation or reduction of the polymer and proton motion causes, on a slower timescale, the movement of water into the film on oxidation and out of the film on reduction.
eqcm, poly(aniline)-poly(styrenesulfonate), ionic flux, cyclic voltammetry, redox switching, quartz-crystal microbalance, adenine-dinucleotide nadh, probe beamdeflection, conducting polymers, composite films, polyaniline films, poly(aniline)-coated electrodes, electrochemical reactions, artificialmuscles, coated electrodes
0013-4686
1537-1546
Bauermann, L.P.
15492c50-dd14-401d-a17f-83460a16e831
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Bauermann, L.P.
15492c50-dd14-401d-a17f-83460a16e831
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075

Bauermann, L.P. and Bartlett, P.N. (2005) EQCM measurements of the ion and solvent flux in thin poly(aniline)–poly(styrenesulfonate) films during redox switching. Electrochimica Acta, 50 (7-8), 1537-1546. (doi:10.1016/j.electacta.2004.10.011).

Record type: Article

Abstract

The ion and solvent movement accompanying redox cycling of thin (~1 ?m) films of poly(aniline)–poly(styrenesulfonate) were studied using the electrochemical quartz crystal microbalance and the transfer function method. The poly(aniline)–poly(styrenesulfonate) film was found to be acoustically rigid and smooth both during potentiodynamic deposition and during redox cycling in acid solution allowing the calculation of the changes in the mass directly from the variation in XL. We find that during redox cycling in 1 M perchloric or hydrochloric acid electroneutrality of the poly(aniline)–poly(styrenesulfonate) is maintained exclusively by the movement of protons. The oxidation or reduction of the polymer and proton motion causes, on a slower timescale, the movement of water into the film on oxidation and out of the film on reduction.

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More information

Published date: 15 February 2005
Keywords: eqcm, poly(aniline)-poly(styrenesulfonate), ionic flux, cyclic voltammetry, redox switching, quartz-crystal microbalance, adenine-dinucleotide nadh, probe beamdeflection, conducting polymers, composite films, polyaniline films, poly(aniline)-coated electrodes, electrochemical reactions, artificialmuscles, coated electrodes

Identifiers

Local EPrints ID: 20713
URI: http://eprints.soton.ac.uk/id/eprint/20713
ISSN: 0013-4686
PURE UUID: 7790787c-c9b3-4b7a-bab1-a07feeefd47e
ORCID for P.N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 01 Mar 2006
Last modified: 10 Dec 2019 01:56

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