Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Excitation wavelength dependent surface enhanced Raman scattering of 4-aminothiophenol on gold nanorings

Excitation wavelength dependent surface enhanced Raman scattering of 4-aminothiophenol on gold... Detailed understanding of the underlying mechanisms of surface enhanced Raman scattering (SERS) remains challenging for different experimental conditions. We report on an excitation wavelength dependent SERS of 4-aminothiophenol molecules on gold nanorings. SERS and normal Raman spectra, combined with well-characterized surface morphology, optical spectroscopy and electromagnetic (EM) field simulations of gold nanoring substrates indicate that the EM enhancement occurs at all three excitation wavelengths (532, 633 and 785 nm) employed but at short wavelengths (532 and 633 nm) charge transfer (CT) results in additional strong enhancements of particular Raman transitions. These results pave the way to further understanding the origin of the SERS mechanism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nanoscale Royal Society of Chemistry

Excitation wavelength dependent surface enhanced Raman scattering of 4-aminothiophenol on gold nanorings

Loading next page...
 
/lp/royal-society-of-chemistry/excitation-wavelength-dependent-surface-enhanced-raman-scattering-of-4-sZRCPRPCSm

References (37)

Publisher
Royal Society of Chemistry
Copyright
This journal is © The Royal Society of Chemistry
ISSN
2040-3364
eISSN
2040-3372
DOI
10.1039/c2nr11805j
pmid
22297424
Publisher site
See Article on Publisher Site

Abstract

Detailed understanding of the underlying mechanisms of surface enhanced Raman scattering (SERS) remains challenging for different experimental conditions. We report on an excitation wavelength dependent SERS of 4-aminothiophenol molecules on gold nanorings. SERS and normal Raman spectra, combined with well-characterized surface morphology, optical spectroscopy and electromagnetic (EM) field simulations of gold nanoring substrates indicate that the EM enhancement occurs at all three excitation wavelengths (532, 633 and 785 nm) employed but at short wavelengths (532 and 633 nm) charge transfer (CT) results in additional strong enhancements of particular Raman transitions. These results pave the way to further understanding the origin of the SERS mechanism.

Journal

NanoscaleRoyal Society of Chemistry

Published: Feb 2, 2012

There are no references for this article.