Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films
- Autores
- Arisnabarreta, Nicolás; Paredes Olivera, Patricia; Cometto, Fernando Pablo; Patrito, Eduardo Martin
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We investigated the conversion of electrochemically grown CuO into copper-alkanethiolate lamellar structures supported on a Cu substrate upon immersion in solutions of n-alkanethiols. After considering different preparation conditions (alkyl chain length, thiol concentration, and type of solvent), we found that the oxide can be rapidly converted into compact and highly passivating lamellar layers in 1-octanethiolate/0.1 M NaOH forming solutions. Alkaline forming solutions play a key role in favoring the conversion of CuO into the lamellar compound vs the competing mechanism in which the oxide is reduced and the thiolates are oxidized to disulfides. The oxide conversion into the layered structure is incomplete for both short and long alkanethiols, and it is almost complete in the case of 1-octanethiol. The use of less polar solvents such as ethanol or n-hexane is much less effective in producing layered Cu-thiolates. Spectroscopic ellipsometry measurements showed that 10-nm-thick CuO is converted into a 100-nm-thick lamellar compound, which corresponds to around 40 lamellae. After the breakage of the layers during O2 evolution at high anodic potentials, a healing behavior was observed: The copper surface became passivated again after exposure of the broken layer in the air for a few minutes. The layered compound was extensively characterized by X-ray photoelectron spectroscopy and Raman spectroscopy. The decrease of O 1s/Cu 3p ratio and the increase of S 2p/Cu 3p and C 1s/Cu 3p ratios clearly showed the conversion of CuO into a copper-thiolate complex. The Raman spectrum of the Cu-octanethiolate compound shows a considerable enhancement of all bands as compared to a self-assembled monolayer. The sharpness of the most prominent peaks indicates the high crystallinity of the alkyl chains in the layered compound. Density functional theory calculations showed that the alkyl chains lie nearly perpendicular to the layer of Cu atoms. The calculation of Raman vibrational frequencies using density functional perturbation theory allowed an unambiguous assignment of experimental Raman peaks.
Fil: Arisnabarreta, Nicolás. 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
Fil: Paredes Olivera, Patricia. 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
Fil: Cometto, Fernando Pablo. 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
Fil: Patrito, Eduardo Martin. 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
-
ALKANETHIOLS
CU
LAMELLAR STRUCTURES
ELECTROCHEMISTRY - 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:11336/124514
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Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide FilmsArisnabarreta, NicolásParedes Olivera, PatriciaCometto, Fernando PabloPatrito, Eduardo MartinALKANETHIOLSCULAMELLAR STRUCTURESELECTROCHEMISTRYhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We investigated the conversion of electrochemically grown CuO into copper-alkanethiolate lamellar structures supported on a Cu substrate upon immersion in solutions of n-alkanethiols. After considering different preparation conditions (alkyl chain length, thiol concentration, and type of solvent), we found that the oxide can be rapidly converted into compact and highly passivating lamellar layers in 1-octanethiolate/0.1 M NaOH forming solutions. Alkaline forming solutions play a key role in favoring the conversion of CuO into the lamellar compound vs the competing mechanism in which the oxide is reduced and the thiolates are oxidized to disulfides. The oxide conversion into the layered structure is incomplete for both short and long alkanethiols, and it is almost complete in the case of 1-octanethiol. The use of less polar solvents such as ethanol or n-hexane is much less effective in producing layered Cu-thiolates. Spectroscopic ellipsometry measurements showed that 10-nm-thick CuO is converted into a 100-nm-thick lamellar compound, which corresponds to around 40 lamellae. After the breakage of the layers during O2 evolution at high anodic potentials, a healing behavior was observed: The copper surface became passivated again after exposure of the broken layer in the air for a few minutes. The layered compound was extensively characterized by X-ray photoelectron spectroscopy and Raman spectroscopy. The decrease of O 1s/Cu 3p ratio and the increase of S 2p/Cu 3p and C 1s/Cu 3p ratios clearly showed the conversion of CuO into a copper-thiolate complex. The Raman spectrum of the Cu-octanethiolate compound shows a considerable enhancement of all bands as compared to a self-assembled monolayer. The sharpness of the most prominent peaks indicates the high crystallinity of the alkyl chains in the layered compound. Density functional theory calculations showed that the alkyl chains lie nearly perpendicular to the layer of Cu atoms. The calculation of Raman vibrational frequencies using density functional perturbation theory allowed an unambiguous assignment of experimental Raman peaks.Fil: Arisnabarreta, Nicolás. 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; ArgentinaFil: Paredes Olivera, Patricia. 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; ArgentinaFil: Cometto, Fernando Pablo. 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; ArgentinaFil: Patrito, Eduardo Martin. 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; ArgentinaAmerican Chemical Society2019-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/124514Arisnabarreta, Nicolás; Paredes Olivera, Patricia; Cometto, Fernando Pablo; Patrito, Eduardo Martin; Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films; American Chemical Society; Journal of Physical Chemistry C; 123; 28; 6-2019; 17283-172951932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.9b03264info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpcc.9b03264info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:04:50Zoai:ri.conicet.gov.ar:11336/124514instacron: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 10:04:50.484CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
title |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
spellingShingle |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films Arisnabarreta, Nicolás ALKANETHIOLS CU LAMELLAR STRUCTURES ELECTROCHEMISTRY |
title_short |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
title_full |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
title_fullStr |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
title_full_unstemmed |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
title_sort |
Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films |
dc.creator.none.fl_str_mv |
Arisnabarreta, Nicolás Paredes Olivera, Patricia Cometto, Fernando Pablo Patrito, Eduardo Martin |
author |
Arisnabarreta, Nicolás |
author_facet |
Arisnabarreta, Nicolás Paredes Olivera, Patricia Cometto, Fernando Pablo Patrito, Eduardo Martin |
author_role |
author |
author2 |
Paredes Olivera, Patricia Cometto, Fernando Pablo Patrito, Eduardo Martin |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
ALKANETHIOLS CU LAMELLAR STRUCTURES ELECTROCHEMISTRY |
topic |
ALKANETHIOLS CU LAMELLAR STRUCTURES ELECTROCHEMISTRY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We investigated the conversion of electrochemically grown CuO into copper-alkanethiolate lamellar structures supported on a Cu substrate upon immersion in solutions of n-alkanethiols. After considering different preparation conditions (alkyl chain length, thiol concentration, and type of solvent), we found that the oxide can be rapidly converted into compact and highly passivating lamellar layers in 1-octanethiolate/0.1 M NaOH forming solutions. Alkaline forming solutions play a key role in favoring the conversion of CuO into the lamellar compound vs the competing mechanism in which the oxide is reduced and the thiolates are oxidized to disulfides. The oxide conversion into the layered structure is incomplete for both short and long alkanethiols, and it is almost complete in the case of 1-octanethiol. The use of less polar solvents such as ethanol or n-hexane is much less effective in producing layered Cu-thiolates. Spectroscopic ellipsometry measurements showed that 10-nm-thick CuO is converted into a 100-nm-thick lamellar compound, which corresponds to around 40 lamellae. After the breakage of the layers during O2 evolution at high anodic potentials, a healing behavior was observed: The copper surface became passivated again after exposure of the broken layer in the air for a few minutes. The layered compound was extensively characterized by X-ray photoelectron spectroscopy and Raman spectroscopy. The decrease of O 1s/Cu 3p ratio and the increase of S 2p/Cu 3p and C 1s/Cu 3p ratios clearly showed the conversion of CuO into a copper-thiolate complex. The Raman spectrum of the Cu-octanethiolate compound shows a considerable enhancement of all bands as compared to a self-assembled monolayer. The sharpness of the most prominent peaks indicates the high crystallinity of the alkyl chains in the layered compound. Density functional theory calculations showed that the alkyl chains lie nearly perpendicular to the layer of Cu atoms. The calculation of Raman vibrational frequencies using density functional perturbation theory allowed an unambiguous assignment of experimental Raman peaks. Fil: Arisnabarreta, Nicolás. 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 Fil: Paredes Olivera, Patricia. 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 Fil: Cometto, Fernando Pablo. 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 Fil: Patrito, Eduardo Martin. 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 |
We investigated the conversion of electrochemically grown CuO into copper-alkanethiolate lamellar structures supported on a Cu substrate upon immersion in solutions of n-alkanethiols. After considering different preparation conditions (alkyl chain length, thiol concentration, and type of solvent), we found that the oxide can be rapidly converted into compact and highly passivating lamellar layers in 1-octanethiolate/0.1 M NaOH forming solutions. Alkaline forming solutions play a key role in favoring the conversion of CuO into the lamellar compound vs the competing mechanism in which the oxide is reduced and the thiolates are oxidized to disulfides. The oxide conversion into the layered structure is incomplete for both short and long alkanethiols, and it is almost complete in the case of 1-octanethiol. The use of less polar solvents such as ethanol or n-hexane is much less effective in producing layered Cu-thiolates. Spectroscopic ellipsometry measurements showed that 10-nm-thick CuO is converted into a 100-nm-thick lamellar compound, which corresponds to around 40 lamellae. After the breakage of the layers during O2 evolution at high anodic potentials, a healing behavior was observed: The copper surface became passivated again after exposure of the broken layer in the air for a few minutes. The layered compound was extensively characterized by X-ray photoelectron spectroscopy and Raman spectroscopy. The decrease of O 1s/Cu 3p ratio and the increase of S 2p/Cu 3p and C 1s/Cu 3p ratios clearly showed the conversion of CuO into a copper-thiolate complex. The Raman spectrum of the Cu-octanethiolate compound shows a considerable enhancement of all bands as compared to a self-assembled monolayer. The sharpness of the most prominent peaks indicates the high crystallinity of the alkyl chains in the layered compound. Density functional theory calculations showed that the alkyl chains lie nearly perpendicular to the layer of Cu atoms. The calculation of Raman vibrational frequencies using density functional perturbation theory allowed an unambiguous assignment of experimental Raman peaks. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-06 |
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/11336/124514 Arisnabarreta, Nicolás; Paredes Olivera, Patricia; Cometto, Fernando Pablo; Patrito, Eduardo Martin; Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films; American Chemical Society; Journal of Physical Chemistry C; 123; 28; 6-2019; 17283-17295 1932-7447 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/124514 |
identifier_str_mv |
Arisnabarreta, Nicolás; Paredes Olivera, Patricia; Cometto, Fernando Pablo; Patrito, Eduardo Martin; Growth of Layered Copper-Alkanethiolate Frameworks from Thin Anodic Copper Oxide Films; American Chemical Society; Journal of Physical Chemistry C; 123; 28; 6-2019; 17283-17295 1932-7447 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.9b03264 info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jpcc.9b03264 |
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 |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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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 |
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13.070432 |