Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films - Laboratoire Interfaces et Systèmes Electrochimiques Accéder directement au contenu
Article Dans Une Revue Electrochimica Acta Année : 2015

Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films

Résumé

In dynamic intrinsically conducting films, counterions transfer and conformational movements stimulated by the electrochemical reactions affect the free water molecules transfer. Poly(3,4-ethylenedioxythiophene) or PEDOT is included in this category. Here, p-doping of PEDOT immersed in LiClO4 aqueous solution was explored by ac-electrogravimetry. Electrochemical impedance spectroscopy combined with mass impedance spectroscopy proves useful for species identification and kinetics. For PEDOT, new equations have been developed to analyze the ac -electrogravimetry response. Quantitatively, faster free water transfer and slower coupled View the MathML sourceClO4−/free water transfer were separated. Free water transfer plays a key role as a “fingerprint” of conformational movements. This might respond to fundamental questions about the mechanism of PEDOT as well as their implication in technological devices based on this polymer.
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Dates et versions

hal-01138530 , version 1 (02-04-2015)

Identifiants

Citer

Jéronimo Agrisuelas, Claude Gabrielli, J.J. García-Jareño, Hubert Perrot, Ozlem Sel, et al.. Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films. Electrochimica Acta, 2015, 164, pp.21-30. ⟨10.1016/j.electacta.2015.02.133⟩. ⟨hal-01138530⟩
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