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Abstract:

Electrodes modified layer-by-layer by self-assembly of redox active polyelectrolytes comprised of osmium bipyridine-pyridine derivatized poly(allyl-amine) and poly(vinyl) sulfonate have been studied by EQCM, ellipsometry, cyclic voltammetry and electrochemical impedance spectroscopy in aqueous solutions of different anions and cations. Redox driven swelling by solvent exchange during oxidation, in excess to the hydration number, occurs by perturbation of the equilibrium between the osmotic and elastic forces as a result of the electrochemical injection of charge into the film. The exchanged mass and volume change during redox switching strongly depends on the nature of the anion under anion Donnan permselectivity conditions. © the Owner Societies 2006.

Registro:

Documento: Artículo
Título:Nanostructured modified electrodes: Role of ions and solvent flux in redox active polyelectrolyte multilayer films
Autor:Tagliazucchi, M.; Grumelli, D.; Calvo, E.J.
Filiación:INQUIMAE, Departamento de Química Inorgánica, Analítica Y Química Física, Universidad de Buenos Aires, Buenos Aires, C1428EHA, Argentina
INIFTA, cc. 16, suc 4, 1900 La Plata, Argentina
Palabras clave:cation; electrolyte; ion; nanomaterial; oxygen; solvent; article; chemical model; chemistry; electrochemistry; electrode; methodology; nanotechnology; oxidation reduction reaction; physical chemistry; surface property; time; Cations; Chemistry, Physical; Electrochemistry; Electrodes; Electrolytes; Ions; Models, Chemical; Nanostructures; Nanotechnology; Oxidation-Reduction; Oxygen; Solvents; Surface Properties; Time Factors
Año:2006
Volumen:8
Número:43
Página de inicio:5086
Página de fin:5095
DOI: http://dx.doi.org/10.1039/b609341h
Título revista:Physical Chemistry Chemical Physics
Título revista abreviado:Phys. Chem. Chem. Phys.
ISSN:14639076
CODEN:PPCPF
CAS:oxygen, 7782-44-7; Cations; Electrolytes; Ions; Oxygen, 7782-44-7; Solvents
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v8_n43_p5086_Tagliazucchi

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Citas:

---------- APA ----------
Tagliazucchi, M., Grumelli, D. & Calvo, E.J. (2006) . Nanostructured modified electrodes: Role of ions and solvent flux in redox active polyelectrolyte multilayer films. Physical Chemistry Chemical Physics, 8(43), 5086-5095.
http://dx.doi.org/10.1039/b609341h
---------- CHICAGO ----------
Tagliazucchi, M., Grumelli, D., Calvo, E.J. "Nanostructured modified electrodes: Role of ions and solvent flux in redox active polyelectrolyte multilayer films" . Physical Chemistry Chemical Physics 8, no. 43 (2006) : 5086-5095.
http://dx.doi.org/10.1039/b609341h
---------- MLA ----------
Tagliazucchi, M., Grumelli, D., Calvo, E.J. "Nanostructured modified electrodes: Role of ions and solvent flux in redox active polyelectrolyte multilayer films" . Physical Chemistry Chemical Physics, vol. 8, no. 43, 2006, pp. 5086-5095.
http://dx.doi.org/10.1039/b609341h
---------- VANCOUVER ----------
Tagliazucchi, M., Grumelli, D., Calvo, E.J. Nanostructured modified electrodes: Role of ions and solvent flux in redox active polyelectrolyte multilayer films. Phys. Chem. Chem. Phys. 2006;8(43):5086-5095.
http://dx.doi.org/10.1039/b609341h