Studies of the Adsorption of Photographic Sensitizing and Desensitizing Dyes to Silver Bromide Grains on the Basis of Their Visible and Infrared Spectra

Abstract

Nature of the interaction between silver bromide grains and photographic sensitizing and desensitizing dye molecules was examined on the basis of visible and infrared absorption spectra of adsorbed dyes on silver bromide grains. And, it has been found that photographic dyes interact with the surface of silver bromide grains by van der Waals' forces and the electrostatic force. Then, the experimental method was designed to examine the influence of imperfections of silver bromide grains on the energy or electron transfer from excited dye molecules to silver bromide grains, i.e., spectral sensitization in photography. And, in this work, no evidence was obtained for the presence of the influence of imperfections of silver bromide grains on spectral sensitization of the photographic process.