Abstract
Surface-enhanced Raman Scattering (SERS) investigations on a cyanine dye in photographic silver halide emulsions with various photographically relevant additives are reported. In addition to an electromagnetic enhancement due to silver particles of suitable size and shape a chemical enhancement which is directly connected with the thiosulfate digestion of the emulsion, i.e. the formation of Ag 2S, plays an important role. In photographic emulsions sensitivity centres and SERS active sites are identical. A strong influence of the additives (stabilizers and antifogging agents) on the chemical SERS enhancement was found.
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