Journal
LANGMUIR
Volume 25, Issue 10, Pages 5661-5666Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la804251a
Keywords
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Funding
- ANPCyT (Argentina) [PICT06-621, PAE 22711]
- Ministeri de Ciencia e Innovacion, (Spain) [CTQ 2008-06017/BQU]
- Guggenheim Foundation
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Degradation of thiolate self-assembled monolayers (SAMs) in ambient conditions and liquid environments seriously limits the fabrication of thiol-based devices. Here, we demonstrate that nanostructured gold exhibits higher resistance to SAM degradation and increased electrochemical stability against thiolate desorption in relation to polycrystalline preferred oriented Au(111). The increased stability call be related to the presence of a large number of defects, Such its adatoms, vacancies, and steps where the thiolate binding energy is stronger than at terraces. The nanostructured An is all interesting platform because it call be easily prepared, has surface enhanced Raman spectroscopy (SERS) activity, and exhibits a high signal/noise ratio for amperometric detection because of its large real surface area.
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