Artículo
Nanomechanics of bidentate thiolate ligands on gold surfaces
Fecha de publicación:
02/2015
Editorial:
American Physical Society
Revista:
Physical Review Letters
ISSN:
0031-9007
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effect of the chain length separating sulfur atoms in bidentate thiols attached to defective gold surfaces on the rupture of the respective molecule-gold junctions has been studied computationally. Thermal desorption always yields cyclic disulfides. In contrast, mechanochemical desorption leads to cyclic gold complexes, where metal atoms are extracted from the surface and kept in tweezer-like arrangements by the sulfur atoms. This phenomenon is rationalized in terms of directional mechanical manipulation of Au-Au bonds and Au-S coordination numbers. Moreover, the flexibility of the chain is shown to crucially impact on the mechanical strength of the junction.
Palabras clave:
Mechanical Properties
,
Dft
,
Thermal Desorption
,
Bidentate Thiols
Archivos asociados
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Identificadores
Colecciones
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Zoloff Michoff, Martin Eduardo; Ribas Arino, Jordi; Marx, Dominik; Nanomechanics of bidentate thiolate ligands on gold surfaces; American Physical Society; Physical Review Letters; 114; 7; 2-2015
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