Nanomechanics of bidentate thiolate ligands on 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...
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| Veröffentlicht in: | Physical review letters 2015-02, Vol.114 (7), p.075501-075501, Article 075501 |
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| container_title | Physical review letters |
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| creator | Zoloff Michoff, Martin E Ribas-Arino, Jordi Marx, Dominik |
| 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. |
| doi_str_mv | 10.1103/PhysRevLett.114.075501 |
| format | Article |
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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. 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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.</description><subject>Atoms</subject><subject>Chains</subject><subject>Coordination numbers</subject><subject>Desorption</subject><subject>Flexibility</subject><subject>Gold</subject><subject>Lead (metal)</subject><subject>Ligands</subject><subject>Nanotechnology</subject><subject>Nanotecnologia</subject><subject>Sulfur</subject><subject>Àtoms</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>XX2</sourceid><recordid>eNqFUclOwzAQtRCIlsIvVDlySRkvsROJC0JsUgUIwdly7XEblKXECVL_Hlcty43DaMZv5nme5hEypTCjFPjF82oTXvBzjn0fATEDlWVAD8iYgipSFaFDMgbgNC0A1IichPAOAJTJ_JiMWKYkLyQbk8tH07Q12pVpShuS1ieL0mHTmx6TflW21baoyqVpXOw2ybKtXBKGzhuL4ZQceVMFPNvnCXm7vXm9vk_nT3cP11fz1Aou-lRIKZxAJhSARcesdRalNw695W6Rc7XIMw8eWZGDwBgs81J5rhxjtuB8QujuXxsGqzu02FnT69aUv49tMFBM8yxTDCLnfMdZd-3HgKHXdRksVpVpsB2CpqrgLIvXEv-PRv2MciG3SuReSdeG0KHX666sTbfRFPTWGP3HmAgIvTMmEqf7HcOiRvdD-3aCfwFCCYvY</recordid><startdate>20150220</startdate><enddate>20150220</enddate><creator>Zoloff Michoff, Martin E</creator><creator>Ribas-Arino, Jordi</creator><creator>Marx, Dominik</creator><general>American Physical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>XX2</scope></search><sort><creationdate>20150220</creationdate><title>Nanomechanics of bidentate thiolate ligands on gold surfaces</title><author>Zoloff Michoff, Martin E ; Ribas-Arino, Jordi ; Marx, Dominik</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c434t-4664d4e24700ced2ccdce6fadefc3db837b85f0fe29804e80425f67f37d22c933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Atoms</topic><topic>Chains</topic><topic>Coordination numbers</topic><topic>Desorption</topic><topic>Flexibility</topic><topic>Gold</topic><topic>Lead (metal)</topic><topic>Ligands</topic><topic>Nanotechnology</topic><topic>Nanotecnologia</topic><topic>Sulfur</topic><topic>Àtoms</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zoloff Michoff, Martin E</creatorcontrib><creatorcontrib>Ribas-Arino, Jordi</creatorcontrib><creatorcontrib>Marx, Dominik</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Recercat</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zoloff Michoff, Martin E</au><au>Ribas-Arino, Jordi</au><au>Marx, Dominik</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nanomechanics of bidentate thiolate ligands on gold surfaces</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2015-02-20</date><risdate>2015</risdate><volume>114</volume><issue>7</issue><spage>075501</spage><epage>075501</epage><pages>075501-075501</pages><artnum>075501</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>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. 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| ispartof | Physical review letters, 2015-02, Vol.114 (7), p.075501-075501, Article 075501 |
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| source | Recercat; American Physical Society Journals |
| subjects | Atoms Chains Coordination numbers Desorption Flexibility Gold Lead (metal) Ligands Nanotechnology Nanotecnologia Sulfur Àtoms |
| title | Nanomechanics of bidentate thiolate ligands on gold surfaces |
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