Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions
- Autores
- Farias, Eliana Desiree; Passeggi, Mario Cesar Guillermo; Brunetti, Veronica
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- An effective tailoring of carbon surfaces functionalized with a first-generation amino-ended dendrons was achieved by a simple self-assembly strategy. The morphology, as well as the viscoelastic and electrical properties of the modified surfaces were characterized at a micro-nanoscale level, by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), Atomic Force Microscopy (AFM) and Kelvin Probe Force Microscopy (KPFM). Thermodynamic parameters of the adsorption were investigated by EIS, studying the blocking properties of the modified surfaces towards the redox conversion of [Fe(CN)6]3 −/[Fe(CN)6]4 −. AFM images were used to characterize the topography of the modified surfaces and also their viscoelastic properties by the acquisition of phase images. π-π stacking interactions between dendrons and the carbon surface control the aggregation at low coverages, while forces of intermolecular Hydrogen-bond among dendrons appear at high coverages leading to more compact regions. The implications of the amino-ended dendron layer on the electrical properties of the modified surface have been analyzed through KPFM in comparison with nitro-ended dendron films, showing a decrease of the local contact potential difference after the incorporation of molecules having electron-donor (− NH2) functional groups, in contrast with the increase showed for molecules with electron-acceptor (− NO2) ones.
Fil: Farias, Eliana Desiree. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Passeggi, Mario Cesar Guillermo. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Brunetti, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina - Materia
-
Dendronized Layers
Frumkin Adsorption
Impedimetric Determination
Kpfm
Substituent Effects - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/37990
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3498 |
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CONICET Digital (CONICET) |
spelling |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactionsFarias, Eliana DesireePasseggi, Mario Cesar GuillermoBrunetti, VeronicaDendronized LayersFrumkin AdsorptionImpedimetric DeterminationKpfmSubstituent Effectshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1An effective tailoring of carbon surfaces functionalized with a first-generation amino-ended dendrons was achieved by a simple self-assembly strategy. The morphology, as well as the viscoelastic and electrical properties of the modified surfaces were characterized at a micro-nanoscale level, by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), Atomic Force Microscopy (AFM) and Kelvin Probe Force Microscopy (KPFM). Thermodynamic parameters of the adsorption were investigated by EIS, studying the blocking properties of the modified surfaces towards the redox conversion of [Fe(CN)6]3 −/[Fe(CN)6]4 −. AFM images were used to characterize the topography of the modified surfaces and also their viscoelastic properties by the acquisition of phase images. π-π stacking interactions between dendrons and the carbon surface control the aggregation at low coverages, while forces of intermolecular Hydrogen-bond among dendrons appear at high coverages leading to more compact regions. The implications of the amino-ended dendron layer on the electrical properties of the modified surface have been analyzed through KPFM in comparison with nitro-ended dendron films, showing a decrease of the local contact potential difference after the incorporation of molecules having electron-donor (− NH2) functional groups, in contrast with the increase showed for molecules with electron-acceptor (− NO2) ones.Fil: Farias, Eliana Desiree. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Passeggi, Mario Cesar Guillermo. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Brunetti, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaElsevier Science Sa2017-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37990Farias, Eliana Desiree; Passeggi, Mario Cesar Guillermo; Brunetti, Veronica; Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions; Elsevier Science Sa; Thin Solid Films; 642; 11-2017; 339-3440040-6090CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040609017307484info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tsf.2017.10.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:37Zoai:ri.conicet.gov.ar:11336/37990instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:37.613CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
title |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
spellingShingle |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions Farias, Eliana Desiree Dendronized Layers Frumkin Adsorption Impedimetric Determination Kpfm Substituent Effects |
title_short |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
title_full |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
title_fullStr |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
title_full_unstemmed |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
title_sort |
Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions |
dc.creator.none.fl_str_mv |
Farias, Eliana Desiree Passeggi, Mario Cesar Guillermo Brunetti, Veronica |
author |
Farias, Eliana Desiree |
author_facet |
Farias, Eliana Desiree Passeggi, Mario Cesar Guillermo Brunetti, Veronica |
author_role |
author |
author2 |
Passeggi, Mario Cesar Guillermo Brunetti, Veronica |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Dendronized Layers Frumkin Adsorption Impedimetric Determination Kpfm Substituent Effects |
topic |
Dendronized Layers Frumkin Adsorption Impedimetric Determination Kpfm Substituent Effects |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
An effective tailoring of carbon surfaces functionalized with a first-generation amino-ended dendrons was achieved by a simple self-assembly strategy. The morphology, as well as the viscoelastic and electrical properties of the modified surfaces were characterized at a micro-nanoscale level, by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), Atomic Force Microscopy (AFM) and Kelvin Probe Force Microscopy (KPFM). Thermodynamic parameters of the adsorption were investigated by EIS, studying the blocking properties of the modified surfaces towards the redox conversion of [Fe(CN)6]3 −/[Fe(CN)6]4 −. AFM images were used to characterize the topography of the modified surfaces and also their viscoelastic properties by the acquisition of phase images. π-π stacking interactions between dendrons and the carbon surface control the aggregation at low coverages, while forces of intermolecular Hydrogen-bond among dendrons appear at high coverages leading to more compact regions. The implications of the amino-ended dendron layer on the electrical properties of the modified surface have been analyzed through KPFM in comparison with nitro-ended dendron films, showing a decrease of the local contact potential difference after the incorporation of molecules having electron-donor (− NH2) functional groups, in contrast with the increase showed for molecules with electron-acceptor (− NO2) ones. Fil: Farias, Eliana Desiree. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina Fil: Passeggi, Mario Cesar Guillermo. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina Fil: Brunetti, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina |
description |
An effective tailoring of carbon surfaces functionalized with a first-generation amino-ended dendrons was achieved by a simple self-assembly strategy. The morphology, as well as the viscoelastic and electrical properties of the modified surfaces were characterized at a micro-nanoscale level, by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), Atomic Force Microscopy (AFM) and Kelvin Probe Force Microscopy (KPFM). Thermodynamic parameters of the adsorption were investigated by EIS, studying the blocking properties of the modified surfaces towards the redox conversion of [Fe(CN)6]3 −/[Fe(CN)6]4 −. AFM images were used to characterize the topography of the modified surfaces and also their viscoelastic properties by the acquisition of phase images. π-π stacking interactions between dendrons and the carbon surface control the aggregation at low coverages, while forces of intermolecular Hydrogen-bond among dendrons appear at high coverages leading to more compact regions. The implications of the amino-ended dendron layer on the electrical properties of the modified surface have been analyzed through KPFM in comparison with nitro-ended dendron films, showing a decrease of the local contact potential difference after the incorporation of molecules having electron-donor (− NH2) functional groups, in contrast with the increase showed for molecules with electron-acceptor (− NO2) ones. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/37990 Farias, Eliana Desiree; Passeggi, Mario Cesar Guillermo; Brunetti, Veronica; Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions; Elsevier Science Sa; Thin Solid Films; 642; 11-2017; 339-344 0040-6090 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/37990 |
identifier_str_mv |
Farias, Eliana Desiree; Passeggi, Mario Cesar Guillermo; Brunetti, Veronica; Tuning properties of carbon surfaces functionalized with amino-ended dendron layers by exploring their supramolecular interactions; Elsevier Science Sa; Thin Solid Films; 642; 11-2017; 339-344 0040-6090 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040609017307484 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tsf.2017.10.005 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844613034102751232 |
score |
13.070432 |