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Probing the surface-enhanced Raman scattering properties of Au-Ag nanocages at two different excitation wavelengths.
Phys Chem Chem Phys. 2009 Jul 28; 11(28):5903-8.PC

Abstract

The surface-enhanced Raman scattering (SERS) properties of bimetallic Au-Ag nanocages has been thoroughly investigated by changing the nanocage composition, localized surface plasmon resonance (LSPR) peak position and excitation wavelength. We found a significant dependency on excitation wavelength for the Au-Ag nanocages, independent of the underlying LSPR, which can be extended to other bimetallic SERS substrates. While it is well-understood that plasmon damping can occur for Au nanoparticles when their LSPR peaks are close to interband transition frequencies and thereby attenuate SERS intensities, this study probes an additional aspect and shows that SERS intensities are reduced when the excitation light source is near interband transition frequencies regardless of the LSPR location.

Authors+Show Affiliations

Department of Biomedical Engineering, Washington University, St. Louis, Missouri, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

19588011

Citation

Rycenga, Matthew, et al. "Probing the Surface-enhanced Raman Scattering Properties of Au-Ag Nanocages at Two Different Excitation Wavelengths." Physical Chemistry Chemical Physics : PCCP, vol. 11, no. 28, 2009, pp. 5903-8.
Rycenga M, Hou KK, Cobley CM, et al. Probing the surface-enhanced Raman scattering properties of Au-Ag nanocages at two different excitation wavelengths. Phys Chem Chem Phys. 2009;11(28):5903-8.
Rycenga, M., Hou, K. K., Cobley, C. M., Schwartz, A. G., Camargo, P. H., & Xia, Y. (2009). Probing the surface-enhanced Raman scattering properties of Au-Ag nanocages at two different excitation wavelengths. Physical Chemistry Chemical Physics : PCCP, 11(28), 5903-8. https://doi.org/10.1039/b903533h
Rycenga M, et al. Probing the Surface-enhanced Raman Scattering Properties of Au-Ag Nanocages at Two Different Excitation Wavelengths. Phys Chem Chem Phys. 2009 Jul 28;11(28):5903-8. PubMed PMID: 19588011.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Probing the surface-enhanced Raman scattering properties of Au-Ag nanocages at two different excitation wavelengths. AU - Rycenga,Matthew, AU - Hou,Kirk K, AU - Cobley,Claire M, AU - Schwartz,Andrea G, AU - Camargo,Pedro H C, AU - Xia,Younan, Y1 - 2009/04/23/ PY - 2009/7/10/entrez PY - 2009/7/10/pubmed PY - 2009/10/27/medline SP - 5903 EP - 8 JF - Physical chemistry chemical physics : PCCP JO - Phys Chem Chem Phys VL - 11 IS - 28 N2 - The surface-enhanced Raman scattering (SERS) properties of bimetallic Au-Ag nanocages has been thoroughly investigated by changing the nanocage composition, localized surface plasmon resonance (LSPR) peak position and excitation wavelength. We found a significant dependency on excitation wavelength for the Au-Ag nanocages, independent of the underlying LSPR, which can be extended to other bimetallic SERS substrates. While it is well-understood that plasmon damping can occur for Au nanoparticles when their LSPR peaks are close to interband transition frequencies and thereby attenuate SERS intensities, this study probes an additional aspect and shows that SERS intensities are reduced when the excitation light source is near interband transition frequencies regardless of the LSPR location. SN - 1463-9076 UR - https://www.unboundmedicine.com/medline/citation/19588011/Probing_the_surface_enhanced_Raman_scattering_properties_of_Au_Ag_nanocages_at_two_different_excitation_wavelengths_ L2 - https://doi.org/10.1039/b903533h DB - PRIME DP - Unbound Medicine ER -