Simple technique for measuring Fourier transform surface-enhanced Raman spectra of organic compounds

Abstract

A silver surface, suitable for Fourier transform surface enhanced Raman scattering (FT-SERS) has been prepared by subjecting a polished silver surface to an oxidation-reduction cycle in an electrochemical cell with KC1 solution as the electrolyte. After removal from the cell, the surface is washed and dried, and organic compounds applied directly to the surface as solutions in aqueous or organic solvents. Typically, good quality FT-SERS spectra are obtained from 0. l-2g of sample, after evaporation of the solvent.

Probing the Ag, Au, and Cu electrode/pyridine-α-hydroxymethyl biphenyl phosphine oxide isomer interface with SERS

“…1.a). The pause at the negative and positive potentials was 30 and 10 s, respectively [31]. The Au electrode was electrochemically cleaned in a 0.5 M H 2 SO 4 aqueous solution, according to the following procedure.…”

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“…We also anticipate that fractal-metallic surfaces for metal-enhanced fluorescence will find widespread use in medical diagnostics and biotechnology, in an analogous manner to the widespread use of roughened silver electrodes and surfaces for SERS [4,5]. Top: constant-current apparatus for silver fractal growth.…”

“…Roughened silver electrodes are widely used for surface-enhanced Raman scattering (SERS) [4,5]. Although the large increases in Raman signals observed with roughened silver electrodes are thought to be due to surface-contact interactions, we questioned their use in metal-enhanced fluorescence, given that metal-enhanced fluorescence is thought to be a through-space phenomenon.…”