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3 Conclusion In this Chapter, we have described several applications of the enhancement of resonance Raman scattering and molecular fluorescence toward the characterization of single molecules, monolayers, and thin solid films on metal-island films, colloidal metal nanoparticles, and nanocomposite films. While this review is by no means extensive, we believe it does serve to shed light on some of...
In this chapter the phenomenon of surface-enhanced fluorescence has been discussed. Beginning with the discovery of surface-enhanced Raman scattering in the late 1970’s, this review has shown SEF in the context of the broader surface-enhanced spectroscopies. The close relationship of SEF to SERS, due to their common EM enhancement mechanism, in particular, has been stressed. In order to provide a...
The solubility of humic substances (HS) increases with pH. However, when in the presence of appropriate concentrations of transition metals in solution, soluble HS flocculate as a consequence of the aggregation processes promoted by the metallic ions. This is of great environmental interest as HS can retain large amounts of metallic ions at low pH. They can also form soluble complexes with these metallic...
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