Surface‐enhanced Raman spectroscopy with ultraviolet excitation

Abstract

Surface-enhanced Raman scattering (SERS) spectroscopy excited with a UV laser was successfully developed and the UV-SER spectra of various adsorbates, including pyridine and SCN-, on different transition metal electrodes were obtained. The experimental requirements for obtaining UV-SERS in an electrochemical system are given. The surface enhancement factor of a roughened Rh electrode covered with thiocyanate as a model molecule was estimated to be about two orders of magnitude in the UV region, consistent with our preliminary theoretical calculation based on the electromagnetic model. The investigation of SERS in the UV region will improve the understanding of the SERS enhancement mechanism and broaden the research field of SERS in areas such as surface science and the life sciences. Copyright (c) 2005 John Wiley & Sons, Ltd

Evaluation of Colloids and Activation Agents for Determination of Melamine Using UV-SERS

“…This behavior is in good agreement with the few studies 16−19,21 about UV-SERS, published in the last years. Interestingly, behind these two Pt and Pd particles, Ag70 and Au5, which are more typical for visible or NIR SERS excitation wavelengths, showed the best UV-SERS activity.…”

SERS and DFT investigation of the adsorption behavior of 4-mercaptobenzoic acid on silver colloids

“…Applications using SERS as the research tool can be found in the fields of analytical chemistry, surface science, and biomedical studies [4][5][6][7][8][9]. Most of the SERS studies have been carried out with molecules adsorbed on the surfaces of transition metals [10][11][12][13], particularly Ag and Au. To a lesser extent, semiconductor materials [14][15][16] have also been reported to be SERS-active.…”

Super Absorbing Ultraviolet Metasurface

“…However, due to the lack of effective optical confinement and localization strategies, the enhancement factors (EF) for most previously reported transition metal-based UV SERS substrates (e.g. Pd/Pt [24], Ru [25], Rh [24], [25], Co [25], Al [26], etc.) were only on the order of ∼10 2 [27].…”