PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers

In situ polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) under potential control is used to study self-assembled layer-by-layer (LbL) poly(allylamine) (PAH) and poly(acrylic acid) (PAA) multilayers containing the hexacyanoferrate redox system on conductive substrates. T...

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Autores principales: Villalba, M., De Leo, L.P.M., Calvo, E.J.
Formato: JOUR
Materias:
Cyanide
Hexacyanoferrate
Infrared spectroscopy
Layer-by-layer
Self-assembly
Absorption spectroscopy
Cyanides
Iron compounds
Polyelectrolytes
Redox reactions
Self assembly
Spectroelectrochemistry
Surface treatment
Alternate immersions
Conductive substrates
Hexacyanoferrates
Layer by layer
Polyacrylic acids
Polyelectrolyte multilayer
Potential dependence
Self-assembled layers
Multilayers
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_21960216_v1_n1_p_Villalba
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_21960216_v1_n1_p_Villalba2023-10-03T16:40:24Z PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers Villalba, M. De Leo, L.P.M. Calvo, E.J. Cyanide Hexacyanoferrate Infrared spectroscopy Layer-by-layer Self-assembly Absorption spectroscopy Cyanides Infrared spectroscopy Iron compounds Polyelectrolytes Redox reactions Self assembly Spectroelectrochemistry Surface treatment Alternate immersions Conductive substrates Hexacyanoferrates Layer by layer Polyacrylic acids Polyelectrolyte multilayer Potential dependence Self-assembled layers Multilayers In situ polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) under potential control is used to study self-assembled layer-by-layer (LbL) poly(allylamine) (PAH) and poly(acrylic acid) (PAA) multilayers containing the hexacyanoferrate redox system on conductive substrates. Two systems were examined, which differ in the way the redox complex is entrapped in the LbL polyelectrolyte multilayer: In system I, the LbL polyelectrolyte multilayer, self-assembled by alternate immersion in PAH and PAA, was exchanged in a 2 mm K3Fe(CN)6 solution of pH 3.5 for 30 min and then thoroughly rinsed with water. In system II, the 2 mm K3Fe(CN)6 solution was complexed with PAA prior to self-assembly with PAA. PMIRRAS studies demonstrate the potential dependence of the vibrational modes of the polyelectrolyte backbones and the CN stretching modes, which are sensitive to the redox charge in the iron center. © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Fil:Villalba, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calvo, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_21960216_v1_n1_p_Villalba
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cyanide
Hexacyanoferrate
Infrared spectroscopy
Layer-by-layer
Self-assembly
Absorption spectroscopy
Cyanides
Infrared spectroscopy
Iron compounds
Polyelectrolytes
Redox reactions
Self assembly
Spectroelectrochemistry
Surface treatment
Alternate immersions
Conductive substrates
Hexacyanoferrates
Layer by layer
Polyacrylic acids
Polyelectrolyte multilayer
Potential dependence
Self-assembled layers
Multilayers
spellingShingle Cyanide
Hexacyanoferrate
Infrared spectroscopy
Layer-by-layer
Self-assembly
Absorption spectroscopy
Cyanides
Infrared spectroscopy
Iron compounds
Polyelectrolytes
Redox reactions
Self assembly
Spectroelectrochemistry
Surface treatment
Alternate immersions
Conductive substrates
Hexacyanoferrates
Layer by layer
Polyacrylic acids
Polyelectrolyte multilayer
Potential dependence
Self-assembled layers
Multilayers
Villalba, M.
De Leo, L.P.M.
Calvo, E.J.
PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
topic_facet Cyanide
Hexacyanoferrate
Infrared spectroscopy
Layer-by-layer
Self-assembly
Absorption spectroscopy
Cyanides
Infrared spectroscopy
Iron compounds
Polyelectrolytes
Redox reactions
Self assembly
Spectroelectrochemistry
Surface treatment
Alternate immersions
Conductive substrates
Hexacyanoferrates
Layer by layer
Polyacrylic acids
Polyelectrolyte multilayer
Potential dependence
Self-assembled layers
Multilayers
description In situ polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) under potential control is used to study self-assembled layer-by-layer (LbL) poly(allylamine) (PAH) and poly(acrylic acid) (PAA) multilayers containing the hexacyanoferrate redox system on conductive substrates. Two systems were examined, which differ in the way the redox complex is entrapped in the LbL polyelectrolyte multilayer: In system I, the LbL polyelectrolyte multilayer, self-assembled by alternate immersion in PAH and PAA, was exchanged in a 2 mm K3Fe(CN)6 solution of pH 3.5 for 30 min and then thoroughly rinsed with water. In system II, the 2 mm K3Fe(CN)6 solution was complexed with PAA prior to self-assembly with PAA. PMIRRAS studies demonstrate the potential dependence of the vibrational modes of the polyelectrolyte backbones and the CN stretching modes, which are sensitive to the redox charge in the iron center. © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
format JOUR
author Villalba, M.
De Leo, L.P.M.
Calvo, E.J.
author_facet Villalba, M.
De Leo, L.P.M.
Calvo, E.J.
author_sort Villalba, M.
title PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
title_short PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
title_full PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
title_fullStr PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
title_full_unstemmed PM-IRRA spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
title_sort pm-irra spectroelectrochemistry of hexacyanoferrate films in layer-by-layer polyelectrolyte multilayers
url http://hdl.handle.net/20.500.12110/paper_21960216_v1_n1_p_Villalba
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AT calvoej pmirraspectroelectrochemistryofhexacyanoferratefilmsinlayerbylayerpolyelectrolytemultilayers
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