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dc.contributor.author
Arisnabarreta, Nicolás
dc.contributor.author
Ruano Sandoval, Gustavo Daniel
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Lingenfelder, Magalí Alejandra
dc.contributor.author
Patrito, Eduardo Martin
dc.contributor.author
Cometto, Fernando Pablo
dc.date.available
2018-03-06T18:13:34Z
dc.date.issued
2017-12
dc.identifier.citation
Arisnabarreta, Nicolás; Ruano Sandoval, Gustavo Daniel; Lingenfelder, Magalí Alejandra; Patrito, Eduardo Martin; Cometto, Fernando Pablo; Comparative Study of the Adsorption of Thiols and Selenols on Au(111) and Au(100); American Chemical Society; Langmuir; 33; 48; 12-2017; 13733-13739
dc.identifier.issn
0743-7463
dc.identifier.uri
http://hdl.handle.net/11336/37975
dc.description.abstract
The effect of the Au crystalline plane on the adsorption of different thiols and selenols is studied via reductive desorption (RD) and X-ray photoelectron spectroscopy (XPS) measurements. Self-assembled monolayers (SAMs) using aliphatic (ATs) and aromatic thiols (ArTs) on both Au(111) and Au(100) were prepared. The electrochemical stability of these SAMs on both surfaces is evaluated by comparing the position of the RD peaks. The longer the AT chain the more stable the SAM on Au(100) when compared to Au(111). By means of XPS measurements, we determine that the binding energy (BE) of the S 2p signal corresponding to the S atoms at the thiol/Au interface, commonly assigned at 162.0 eV, shifts 0.2 eV from Au(111) to Au(100) for SAMs prepared using thiols with the C∗ (C atom bonded to S) in sp3 hybridization, such as ATs. However, when the thiol presents the C∗ with an sp2 hybridization, such as in the case of ArTs, the BE remains at 162.0 eV regardless of the surface plane. Selenol-based SAMs were characterized comparatively on both Au(100) and Au(111). Our results show that selenol SAMs become even more electrochemically stable on Au(100) with respect to Au(111) than the analogue sulfur-based SAM. According to our results, we suggest that the electronic distribution around the Au-S/Se bond could be responsible for the different structural arrangements reported in the literature (gold adatoms, etc.), which should be dependent on the crystalline face (Au(hkl)-S) and the chemical nature of the environment of the adsorbates (sp3-C∗ vs sp2-C∗ and Au-SR vs Au-SeR).
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/embargoedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Sam
dc.subject
Thiols
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Selenols
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Xps
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Cva
dc.subject
Electrochemical Stability
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Comparative Study of the Adsorption of Thiols and Selenols on Au(111) and Au(100)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-05T20:45:50Z
dc.journal.volume
33
dc.journal.number
48
dc.journal.pagination
13733-13739
dc.journal.pais
Estados Unidos
dc.description.fil
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
dc.description.fil
Fil: Ruano Sandoval, Gustavo Daniel. 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
dc.description.fil
Fil: Lingenfelder, Magalí Alejandra. Max Planck-EPFL Laboratory for Molecular Nanoscience; Suiza
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Langmuir
dc.rights.embargoDate
2018-06-01
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/10.1021/acs.langmuir.7b03038
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.langmuir.7b03038
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