Enhanced Electroactivity and Electrochromism in PEDOT Nanowires

Here, we report on an in situ study of the spectroelectrochemical behavior of template prepared poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires by UV-Vis-NIR spectroscopy. A comparative analysis between spectra measured on a PEDOT thin film and on nanowires (diameter: 80 nm, 30 nm) has been made....

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Bibliographic Details
Published in:Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Pa. : 2003), 2008-01, Vol.485 (1), p.835-842
Main Authors: Duvail, J. L., Long, Y., Rétho, P., Louarn, G., Dauginet De Pra, L., Demoustier-Champagne, S.
Format: Article
Language:English
Subjects:
Condensed Matter
electrochromism
Materials Science
nanowire
Physics
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Summary:Here, we report on an in situ study of the spectroelectrochemical behavior of template prepared poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires by UV-Vis-NIR spectroscopy. A comparative analysis between spectra measured on a PEDOT thin film and on nanowires (diameter: 80 nm, 30 nm) has been made. It gives evidence for - enhanced bipolaronic band in the oxidized state, and - more efficient dedoping in the reduced state, for the 30-nm nanowires. This result, analyzed in terms of higher (de)doping level during the redox process for the smaller diameter, demonstrates improved electroactivity and electrochromism, as required for sensors.
ISSN:1542-1406
1563-5287
1543-5318
DOI:10.1080/15421400801918260