6533b85cfe1ef96bd12bd510
RESEARCH PRODUCT
Electrochemically induced free solvent transfer in thin poly(3,4-ethylenedioxythiophene) films
José Juan García-jareñoOzlem SelOzlem SelClaude GabrielliClaude GabrielliFrancisco VicenteHubert PerrotHubert PerrotJerónimo Agrisuelassubject
Materials scienceGeneral Chemical EngineeringAnalytical chemistry02 engineering and technology010402 general chemistryElectrochemistry01 natural scienceschemistry.chemical_compoundPEDOT:PSSac-ElectrogravimetryElectrochemistryMoleculeElectrochemical quartz crystal microbalance[CHIM]Chemical SciencesElectrochemically induced conformational changeschemistry.chemical_classificationAqueous solutionPolymerPoly(3021001 nanoscience & nanotechnology0104 chemical sciencesDielectric spectroscopychemistryChemical engineeringCounterion4-ethylenedioxythiophene)0210 nano-technology[CHIM.OTHE]Chemical Sciences/OtherElectrochemical impedance spectroscopyPoly(34-ethylenedioxythiophene)description
International audience; 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-05-01 |