Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers

Ellipsometric parameters of layer-by-layer self-assembled osmium complex-derivatized poly(allylamine) and glucose oxidase multilayers, (PAH-Os)n(GOx)n, were measured at different wavelengths during oxidation-reduction cycles. Data were analyzed using an isotropic single layer model for the enzyme fi...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Forzani, E.S., Pérez, M.A., Teijelo, M.L., Calvo, E.J.
Formato: JOUR
Materias:
Cyclic voltammetry
Ellipsometry
Enzymes
Ion exchange
Negative ions
Osmium
Oxidation
Polyelectrolytes
Reduction
Refractive index
Self assembly
Swelling
Glucose oxidase
Isotropic single layer model
Polyallylamine
Redox driven swelling
Redox modulation
Multilayers
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07437463_v18_n25_p9867_Forzani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07437463_v18_n25_p9867_Forzani
record_format dspace
spelling todo:paper_07437463_v18_n25_p9867_Forzani2023-10-03T15:38:33Z Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers Forzani, E.S. Pérez, M.A. Teijelo, M.L. Calvo, E.J. Cyclic voltammetry Ellipsometry Enzymes Ion exchange Negative ions Osmium Oxidation Polyelectrolytes Reduction Refractive index Self assembly Swelling Glucose oxidase Isotropic single layer model Polyallylamine Redox driven swelling Redox modulation Multilayers Ellipsometric parameters of layer-by-layer self-assembled osmium complex-derivatized poly(allylamine) and glucose oxidase multilayers, (PAH-Os)n(GOx)n, were measured at different wavelengths during oxidation-reduction cycles. Data were analyzed using an isotropic single layer model for the enzyme films. The changes in film thickness and refractive index during cyclic voltammetry and potential square wave experiments arise from redox modulation causing film swelling due to the exchange of anions and solvent with the bathing electrolyte. These changes correlate well with the fraction of oxidized PAH-Os(III) in the film. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07437463_v18_n25_p9867_Forzani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cyclic voltammetry
Ellipsometry
Enzymes
Ion exchange
Negative ions
Osmium
Oxidation
Polyelectrolytes
Reduction
Refractive index
Self assembly
Swelling
Glucose oxidase
Isotropic single layer model
Polyallylamine
Redox driven swelling
Redox modulation
Multilayers
spellingShingle Cyclic voltammetry
Ellipsometry
Enzymes
Ion exchange
Negative ions
Osmium
Oxidation
Polyelectrolytes
Reduction
Refractive index
Self assembly
Swelling
Glucose oxidase
Isotropic single layer model
Polyallylamine
Redox driven swelling
Redox modulation
Multilayers
Forzani, E.S.
Pérez, M.A.
Teijelo, M.L.
Calvo, E.J.
Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
topic_facet Cyclic voltammetry
Ellipsometry
Enzymes
Ion exchange
Negative ions
Osmium
Oxidation
Polyelectrolytes
Reduction
Refractive index
Self assembly
Swelling
Glucose oxidase
Isotropic single layer model
Polyallylamine
Redox driven swelling
Redox modulation
Multilayers
description Ellipsometric parameters of layer-by-layer self-assembled osmium complex-derivatized poly(allylamine) and glucose oxidase multilayers, (PAH-Os)n(GOx)n, were measured at different wavelengths during oxidation-reduction cycles. Data were analyzed using an isotropic single layer model for the enzyme films. The changes in film thickness and refractive index during cyclic voltammetry and potential square wave experiments arise from redox modulation causing film swelling due to the exchange of anions and solvent with the bathing electrolyte. These changes correlate well with the fraction of oxidized PAH-Os(III) in the film.
format JOUR
author Forzani, E.S.
Pérez, M.A.
Teijelo, M.L.
Calvo, E.J.
author_facet Forzani, E.S.
Pérez, M.A.
Teijelo, M.L.
Calvo, E.J.
author_sort Forzani, E.S.
title Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
title_short Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
title_full Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
title_fullStr Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
title_full_unstemmed Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
title_sort redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers
url http://hdl.handle.net/20.500.12110/paper_07437463_v18_n25_p9867_Forzani
work_keys_str_mv AT forzanies redoxdrivenswellingoflayerbylayerenzymepolyelectrolytemultilayers
AT perezma redoxdrivenswellingoflayerbylayerenzymepolyelectrolytemultilayers
AT teijeloml redoxdrivenswellingoflayerbylayerenzymepolyelectrolytemultilayers
AT calvoej redoxdrivenswellingoflayerbylayerenzymepolyelectrolytemultilayers
_version_ 1782029235282509824

Ejemplares similares