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https://hdl.handle.net/10119/9830
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| Title: | Intensification of surface enhanced Raman scattering of thiol-containing molecules using Ag@Au core@shell nanoparticles |
| Authors: | Singh, Prerna
Thuy, Nguyen, T. B.
Aoki, Yoshiya
Mott, Derrick
Maenosono, Shinya |
| Keywords: | Gold
Silver
Nanoparticle
Sensing
Raman |
| Issue Date: | 2011-05-02 |
| Publisher: | American Institute of Physics |
| Magazine name: | Journal of Applied Physics |
| Volume: | 109 |
| Number: | 9 |
| Start page: | 094301-1 |
| End page: | 094301-7 |
| DOI: | 10.1063/1.3579445 |
| Abstract: | In this paper, we study the relationship between nanoparticles’ structure/composition and the chemical nature of the molecules to be identified in surface enhanced Raman scattering (SERS) spectroscopy. Three types of nanoparticles (NPs) were synthesized, including Ag, Au, and silver coated by gold (Ag@Au), in order to study the resulting enhancement effects. When a rhodamine 6G dye molecule was used to assemble the NPs, it was found that Ag NPs exhibited the highest enhancement activity. However, when a thiol containing 3-amino-1,2,4-triazole-5-thiol molecule was used to assemble the NPs, it was found that the Ag@Au NPs exhibited high Raman activity as well as the Ag NPs. The results give insight into how the chemical properties of the molecules to be analyzed play an important role in the SERS detection. An additional parameter of the analysis reveals the relative stability of the three types of NP probes synthesized with regard to oxidation in the presence of different mediating molecules and varying salt concentrations. The results are of interest in designing and employing NP probes to detect biological molecules using colorimetric and SERS based approaches. |
| Rights: | Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Prerna Singh, Nguyen T. B. Thuy, Yoshiya Aoki, Derrick Mott, and Shinya Maenosono, Journal of Applied Physics, 109(9), 094301 (2011) and may be found at http://link.aip.org/link/doi/10.1063/1.3579445 |
| URI: | https://hdl.handle.net/10119/9830 |
| Material Type: | publisher |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
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