Abstract
Surface enhanced (resonance) Raman scattering [SE(R)RS| has been used to obtain the first molecular spectra ever observed for an organic molecule within a photographic matrix containing gelatin. The molecule, l,l'-diethyl-2,2'-cyanine, is a well-known model spectral sensitizer dye. The experiment uses partial development of a photographic film to create the necessary combination of conditions favorable to SE(R)RS and fluorescence quenching that discriminate the vibrational spectrum of the dye from the background. Under these conditions, Raman signals from gelatin are not observed. Enhancement factors and detection limits are determined with the use of photographic films and several model SE(R)RS-active substrates. Electron microscopy and model substrates are used to further characterize the SE(R)RS-active sites in a photographic film.
Get full access to this article
View all access options for this article.