Nanomechanics of bidentate thiolate ligands of gold surfaces
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...
| Autores: | ; ; |
|---|---|
| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 2015 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositório: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/132993 |
| Acesso em linha: | https://hdl.handle.net/2445/132993 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | Nanotecnologia Àtoms Nanotechnology Atoms |
| _version_ | 1878732444635496449 |
|---|---|
| author | Zoloff Michoff, Martin E. |
| author2 | Ribas Ariño, Jordi Marx, Dominik |
| author2_role | author author |
| author_browse | Marx, Dominik Ribas Ariño, Jordi Zoloff Michoff, Martin E. |
| author_facet | Zoloff Michoff, Martin E. Ribas Ariño, Jordi Marx, Dominik |
| author_role | author |
| collection | Recercat. Dipósit de la Recerca de Catalunya |
| description | 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_4320e92f61188c01ecf5de6481cfaa4e |
| institution | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:recercat.cat:2445/132993 |
| publishDate | 2015 |
| publishDateSort | 2015 |
| publisher | American Physical Society |
| publisherStr | American Physical Society |
| reponame_str | Recercat. Dipósit de la Recerca de Catalunya |
| spelling | Nanomechanics of bidentate thiolate ligands of gold surfaces Zoloff Michoff, Martin E. Ribas Ariño, Jordi Marx, Dominik Nanotecnologia Àtoms Nanotechnology Atoms 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. American Physical Society https://hdl.handle.net/2445/132993 |
| spellingShingle | Nanomechanics of bidentate thiolate ligands of gold surfaces Zoloff Michoff, Martin E. Nanotecnologia Àtoms Nanotechnology Atoms |
| status_str | publishedVersion |
| title | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| title_full | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| title_fullStr | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| title_full_unstemmed | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| title_short | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| title_sort | Nanomechanics of bidentate thiolate ligands of gold surfaces |
| topic | Nanotecnologia Àtoms Nanotechnology Atoms |
| topic_facet | Nanotecnologia Àtoms Nanotechnology Atoms |
| url | https://hdl.handle.net/2445/132993 |