M. Munizmiranda et al., HALIDE ANION EFFECT ON SURFACE-ENHANCED RAMAN-SCATTERING OF 2-AMINO,5-NITROPYRIDINE ADSORBED ON SILVER SOLS, Journal of molecular structure, 348, 1995, pp. 261-264
2-Amino, 5-nitropiridine (ANP) can be adsorbed on silver sols as neutr
al molecule or ANP(-) anion, as detected by SERS. The adsorption of th
e ANP(-) is related to the presence of hydroxide ions on the metal sur
face. Strongly adsorbed halide anions are able to remove hydroxide ion
s from the silver surface, inducing the adsorption of ANP as neutral m
olecule.