Long‐Term Stable Silver Subsurface Ion‐Exchanged Glasses for SERS Applications |
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| Authors: | Anne Simo Virginia Joseph Robert Fenger Prof. Dr. Janina Kneipp Prof. Dr. Klaus Rademann |
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| Affiliation: | 1. Department of Chemistry, Humboldt‐Universit?t zu Berlin, Brook‐Taylor‐Str. 2, 12489 Berlin (Germany), Fax: (+49)?30‐2093‐5559;2. BAM Federal Institute of Materials Research and Testing, Richard‐Willst?tter‐Str. 11, 12489 Berlin (Germany) |
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| Abstract: | We report on the formation of silver subsurface ion‐exchanged metal oxide (silver SIMO) glasses and their surface‐enhanced Raman scattering (SERS) activity. The samples were prepared by a combined thermal and chemical three‐step methodology and characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), environmental electron scanning microscopy (ESEM), and UV/Vis spectroscopy. This unique method provides SERS substrates with protection against contamination and strong, reliable and reproducible SERS enhancement. The Raman enhancement factors of the long‐term stable SIMO glasses were estimated to approximately 107. |
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| Keywords: | AFM/TEM/SEM ion‐exchange nanoparticles glasses surface‐enhanced Raman scattering |
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