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.
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Documento: |
Artículo
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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
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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
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Volumen: | 8
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Número: | 43
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Página de inicio: | 5086
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Página de fin: | 5095
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DOI: |
http://dx.doi.org/10.1039/b609341h |
Título revista: | Physical Chemistry Chemical Physics
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Título revista abreviado: | Phys. Chem. Chem. Phys.
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ISSN: | 14639076
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CODEN: | PPCPF
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CAS: | oxygen, 7782-44-7; Cations; Electrolytes; Ions; Oxygen, 7782-44-7; Solvents
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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