Journal article
SERS intensity optimization by controlling the size and shape of faceted gold nanoparticles
Journal of Raman spectroscopy, v 39(1), pp 61-67
Jan 2008
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Abstract
In this work, we experimentally investigated the surface‐enhanced Raman spectroscopy (SERS) activity of faceted gold nanoparticles, which have been theoretically predicted to yield giant enhancements. Glycine was used to determine the SERS activity as a function of pH and ionic strength and to estimate the corresponding enhancement factor (EF). By optimizing the synthesis conditions of the flat prismatic nanoparticles, it was possible to control their size and shape. We demonstrate that the maximum SERS intensity increases with the edge length of the triangle, reaching a maximum EF of ∼1013 for 1.9 µm triangles (the largest tested). The corresponding glycine detection limit was as low as 10−12 M, close to the single‐molecule threshold. Copyright © 2007 John Wiley & Sons, Ltd.
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Details
- Title
- SERS intensity optimization by controlling the size and shape of faceted gold nanoparticles
- Creators
- Alia SaburMickael HavelYury Gogotsi
- Publication Details
- Journal of Raman spectroscopy, v 39(1), pp 61-67
- Publisher
- John Wiley & Sons, Ltd; Chichester, UK
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000253208000006
- Scopus ID
- 2-s2.0-38549147682
- Other Identifier
- 991014878191404721
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- Web of Science research areas
- Spectroscopy