Adsorption of Aromatic Thiols on Gold Nanoparticle Surfaces Investigated by UV–vis Absorption Spectroscopy and Surface Enhanced Raman Scattering

A UV–vis absorption spectroscopy and surface-enhanced Raman scattering (SERS) study shows that benzyl mercaptan was found to be adsorbed faster than thiophenol on gold nanoparticle surfaces at a low bulk concentration of (almost equal)10^-7 M, whereas they appeared to exhibit almost identical spectral behaviors at high concentration of (almost equal)10^-5 M.