| dc.creator | Carro, Pilar | |
| dc.creator | Müller, Kathrin | |
| dc.creator | Lobo Maza, Flavia Emilia | |
| dc.creator | Vericat, Carolina | |
| dc.creator | Starke, Ulrich | |
| dc.creator | Kern, Klaus | |
| dc.creator | Salvarezza, Roberto Carlos | |
| dc.creator | Grumelli, Doris Elda | |
| dc.date | 2017-04 | |
| dc.date | 2020-06-18T13:17:43Z | |
| dc.date.accessioned | 2023-07-14T19:59:37Z | |
| dc.date.available | 2023-07-14T19:59:37Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/98478 | |
| dc.identifier | https://ri.conicet.gov.ar/11336/63302 | |
| dc.identifier | issn:1932-7447 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7437490 | |
| dc.description | Thiol molecules adsorbed on gold became a model system for molecular self-assembly on metal substrates long ago. In most cases the strong molecule-gold interaction is able to restructure the substrate, resulting in vacancy islands and steps. Today it is widely accepted that gold adatoms produced by this process form stable thiol-adatom complexes, usually termed "staples" (RS-Auad-SR or RS-Auad-SR-Auad-SR), which are the basic units of the self-assembled monolayers. Here we report on a different scenario for 6-mercaptopurine (6MP), a heterocyclic aromatic thiol, namely its adsorption on the Au(001)-(5 × 20) reconstructed surface. Our results show that 6MP lifts the reconstruction upon adsorption, thus ejecting a large excess of gold adatoms. Surprisingly, 6MP molecules prefer to arrange in highly ordered adatom-free domains in the bridging configuration, while the ejected adatoms form gold islands. Our investigation reveals that the formation of thiol-gold adatom complexes is not always a thermodynamically favored process but rather depends on the nature of the thiol molecule. | |
| dc.description | Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas | |
| dc.format | application/pdf | |
| dc.format | 8938-8943 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Química | |
| dc.subject | Self assembled monolayers | |
| dc.subject | 6 mercaptopurine | |
| dc.subject | Au 100 5x20 | |
| dc.subject | Stm_leed | |
| dc.title | 6-Mercaptopurine Self-Assembled Monolayers on Gold (001)-Hex: Revealing the Fate of Gold Adatoms | |
| dc.type | Articulo | |
| dc.type | Preprint | |
