Abstract:
In contrast with the case of thiols, molecular level information regarding the binding of carbon to metals is very scarce. Motivated by the growing interest in the grafting of conducting surfaces and seeking a rationale to explain the differences in electron transfer rates measured in recent experiments, we apply density functional theory to shed light on the binding of carbon to gold. A comparative study between the C - Au(111) and the S - Au(111) bonds allows us to establish a thermodynamic, structural, and electronic description of the aromatic and aliphatic chemisorption. Enlightening insight emerges from the projected density of states, which delivers a natural interpretation of the difference in conductance observed for the two kind of linkages. © 2008 American Chemical Society.
Registro:
Documento: |
Artículo
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Título: | Binding between carbon and the Au(111) surface and what makes it different from the S-Au(111) bond |
Autor: | De La Llave, E.; Ricci, A.; Calvo, E.J.; Scherlis, D.A. |
Filiación: | Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, Pab. II, Buenos Aires, (C1428EHA), Argentina
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Palabras clave: | Chemisorption; Au(111); Au(111) surface; Comparative studies; Conducting surfaces; Electron transfer rates; Molecular levels; Natural interpretations; Projected density of states; Density functional theory |
Año: | 2008
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Volumen: | 112
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Número: | 45
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Página de inicio: | 17611
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Página de fin: | 17617
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DOI: |
http://dx.doi.org/10.1021/jp8036395 |
Título revista: | Journal of Physical Chemistry C
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Título revista abreviado: | J. Phys. Chem. C
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ISSN: | 19327447
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19327447_v112_n45_p17611_DeLaLlave |
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- We note here that both curves have been obtained with different DFT functionals: the calculations performed by Bilić et al. were based on the PW91 form of the generalized gradient approximation. Even so, we chose to exhibit both curves in the same graph to contrast the distinctive behaviour of the two radicals. A comparison of the binding energies of phenylthiol computed with the same simulation parameters is given in Table 1; Badia, A., Lennox, R.B., Reven, L., (2000) Acc. Chem. Res, 33, p. 475. , and references therein
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Citas:
---------- APA ----------
De La Llave, E., Ricci, A., Calvo, E.J. & Scherlis, D.A.
(2008)
. Binding between carbon and the Au(111) surface and what makes it different from the S-Au(111) bond. Journal of Physical Chemistry C, 112(45), 17611-17617.
http://dx.doi.org/10.1021/jp8036395---------- CHICAGO ----------
De La Llave, E., Ricci, A., Calvo, E.J., Scherlis, D.A.
"Binding between carbon and the Au(111) surface and what makes it different from the S-Au(111) bond"
. Journal of Physical Chemistry C 112, no. 45
(2008) : 17611-17617.
http://dx.doi.org/10.1021/jp8036395---------- MLA ----------
De La Llave, E., Ricci, A., Calvo, E.J., Scherlis, D.A.
"Binding between carbon and the Au(111) surface and what makes it different from the S-Au(111) bond"
. Journal of Physical Chemistry C, vol. 112, no. 45, 2008, pp. 17611-17617.
http://dx.doi.org/10.1021/jp8036395---------- VANCOUVER ----------
De La Llave, E., Ricci, A., Calvo, E.J., Scherlis, D.A. Binding between carbon and the Au(111) surface and what makes it different from the S-Au(111) bond. J. Phys. Chem. C. 2008;112(45):17611-17617.
http://dx.doi.org/10.1021/jp8036395