Plasmonic photoluminescence for recovering native chemical information from surface-enhanced Raman scattering.

ABSTRACT: Surface-enhanced Raman scattering (SERS) spectroscopy has attracted tremendous interests as a highly sensitive label-free tool. The local field produced by the excitation of localized surface plasmon resonances (LSPRs) dominates the overall enhancement of SERS. Such an electromagnetic enhancement is unfortunately accompanied by a strong modification in the relative intensity of the original Raman spectra, which highly distorts spectral features providing chemical information. Here we propose a robust method to retrieve the fingerprint of intrinsic chemical information from the SERS spectra. The method is established based on the finding that the SERS background originates from the LSPR-modulated photoluminescence, which contains the local field information shared also by SERS. We validate

SUBMITTER: Lin KQ 

PROVIDER: S-EPMC5379060 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature