Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"

Palladium nanoparticles (Pd NPs) were formed by electrochemical reduction of Pd(NH3)43+ ions entrapped by ion exchange in poly(acrylic acid) (PAA) multilayer films grown by the Sharpless "click reaction." The alkyne (PAAalk) and azide (PAAaz) groups were covalently bound to the PAA, and th...

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Autores principales:	Villalba, Matias Ariel, Bossi, Mariano Luis, Calvo, Ernesto Julio
Publicado:	2016
Materias:	Absorption spectroscopy Carboxylic acids Copper Cyclic voltammetry Electrolytic reduction Gold Ion exchange Multilayer films Multilayers Nanoparticles Nanoreactors Organic acids Polyethylenes Quartz crystal microbalances Reduction Scanning electron microscopy Cathodic direction ELectrochemical methods Electrochemical quartz crystal microbalance Electrochemical reductions Palladium nanoparticles Polarization modulation infrared reflection absorption spectroscopy Poly(acrylic acid ) Polyacrylic acids Palladium
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v32_n27_p6836_Villalba http://hdl.handle.net/20.500.12110/paper_07437463_v32_n27_p6836_Villalba
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07437463_v32_n27_p6836_Villalba
record_format	dspace
spelling	paper:paper_07437463_v32_n27_p6836_Villalba2023-06-08T15:45:03Z Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry" Villalba, Matias Ariel Bossi, Mariano Luis Calvo, Ernesto Julio Absorption spectroscopy Carboxylic acids Copper Cyclic voltammetry Electrolytic reduction Gold Ion exchange Multilayer films Multilayers Nanoparticles Nanoreactors Organic acids Polyethylenes Quartz crystal microbalances Reduction Scanning electron microscopy Cathodic direction ELectrochemical methods Electrochemical quartz crystal microbalance Electrochemical reductions Palladium nanoparticles Polarization modulation infrared reflection absorption spectroscopy Poly(acrylic acid ) Polyacrylic acids Palladium Palladium nanoparticles (Pd NPs) were formed by electrochemical reduction of Pd(NH3)43+ ions entrapped by ion exchange in poly(acrylic acid) (PAA) multilayer films grown by the Sharpless "click reaction." The alkyne (PAAalk) and azide (PAAaz) groups were covalently bound to the PAA, and the catalyzed buildup of the multilayer film was performed by electrochemical reduction of Cu2+ to Cu+. The size of the Pd NPs formed in Au/(PAAalk)3(PAAaz)2 multilayer films by the click reaction, that is, 50 nm, is larger than that of similar Pd NPs formed in electrostatically bound Au/(PAA)3(PAH)2 nanoreactors, that is, 6-9 nm, under similar conditions. A combination of electrochemical methods and electrochemical quartz crystal microbalance, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), ellipsometry, and scanning electron microscopy has been used to follow these processes. Cyclic voltammetry of the resulting Pd NPs in a 0.1 M H2SO4 solution at 0.1 V·s-1 shows the PdO reduction peak at the same potential as that on the clean Pd surface unlike the NPs formed in electrostatically self-assembled Au/(PAA)3(PAH)2 nanoreactors with a 0.2 V shift in the cathodic direction most probably because of the strong adsorption of amino groups on the Pd NP surfaces. © 2016 American Chemical Society. Fil:Villalba, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bossi, 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. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v32_n27_p6836_Villalba http://hdl.handle.net/20.500.12110/paper_07437463_v32_n27_p6836_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	Absorption spectroscopy Carboxylic acids Copper Cyclic voltammetry Electrolytic reduction Gold Ion exchange Multilayer films Multilayers Nanoparticles Nanoreactors Organic acids Polyethylenes Quartz crystal microbalances Reduction Scanning electron microscopy Cathodic direction ELectrochemical methods Electrochemical quartz crystal microbalance Electrochemical reductions Palladium nanoparticles Polarization modulation infrared reflection absorption spectroscopy Poly(acrylic acid ) Polyacrylic acids Palladium
spellingShingle	Absorption spectroscopy Carboxylic acids Copper Cyclic voltammetry Electrolytic reduction Gold Ion exchange Multilayer films Multilayers Nanoparticles Nanoreactors Organic acids Polyethylenes Quartz crystal microbalances Reduction Scanning electron microscopy Cathodic direction ELectrochemical methods Electrochemical quartz crystal microbalance Electrochemical reductions Palladium nanoparticles Polarization modulation infrared reflection absorption spectroscopy Poly(acrylic acid ) Polyacrylic acids Palladium Villalba, Matias Ariel Bossi, Mariano Luis Calvo, Ernesto Julio Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
topic_facet	Absorption spectroscopy Carboxylic acids Copper Cyclic voltammetry Electrolytic reduction Gold Ion exchange Multilayer films Multilayers Nanoparticles Nanoreactors Organic acids Polyethylenes Quartz crystal microbalances Reduction Scanning electron microscopy Cathodic direction ELectrochemical methods Electrochemical quartz crystal microbalance Electrochemical reductions Palladium nanoparticles Polarization modulation infrared reflection absorption spectroscopy Poly(acrylic acid ) Polyacrylic acids Palladium
description	Palladium nanoparticles (Pd NPs) were formed by electrochemical reduction of Pd(NH3)43+ ions entrapped by ion exchange in poly(acrylic acid) (PAA) multilayer films grown by the Sharpless "click reaction." The alkyne (PAAalk) and azide (PAAaz) groups were covalently bound to the PAA, and the catalyzed buildup of the multilayer film was performed by electrochemical reduction of Cu2+ to Cu+. The size of the Pd NPs formed in Au/(PAAalk)3(PAAaz)2 multilayer films by the click reaction, that is, 50 nm, is larger than that of similar Pd NPs formed in electrostatically bound Au/(PAA)3(PAH)2 nanoreactors, that is, 6-9 nm, under similar conditions. A combination of electrochemical methods and electrochemical quartz crystal microbalance, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), ellipsometry, and scanning electron microscopy has been used to follow these processes. Cyclic voltammetry of the resulting Pd NPs in a 0.1 M H2SO4 solution at 0.1 V·s-1 shows the PdO reduction peak at the same potential as that on the clean Pd surface unlike the NPs formed in electrostatically self-assembled Au/(PAA)3(PAH)2 nanoreactors with a 0.2 V shift in the cathodic direction most probably because of the strong adsorption of amino groups on the Pd NP surfaces. © 2016 American Chemical Society.
author	Villalba, Matias Ariel Bossi, Mariano Luis Calvo, Ernesto Julio
author_facet	Villalba, Matias Ariel Bossi, Mariano Luis Calvo, Ernesto Julio
author_sort	Villalba, Matias Ariel
title	Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
title_short	Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
title_full	Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
title_fullStr	Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
title_full_unstemmed	Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"
title_sort	palladium nanoparticles embedded in a layer-by-layer nanoreactor built with poly(acrylic acid) using "electro-click chemistry"
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v32_n27_p6836_Villalba http://hdl.handle.net/20.500.12110/paper_07437463_v32_n27_p6836_Villalba
work_keys_str_mv	AT villalbamatiasariel palladiumnanoparticlesembeddedinalayerbylayernanoreactorbuiltwithpolyacrylicacidusingelectroclickchemistry AT bossimarianoluis palladiumnanoparticlesembeddedinalayerbylayernanoreactorbuiltwithpolyacrylicacidusingelectroclickchemistry AT calvoernestojulio palladiumnanoparticlesembeddedinalayerbylayernanoreactorbuiltwithpolyacrylicacidusingelectroclickchemistry
_version_	1768544507683405824

Palladium Nanoparticles Embedded in a Layer-by-Layer Nanoreactor Built with Poly(Acrylic Acid) Using "electro-Click Chemistry"

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