Spectra of the S 2 electronic transition of rhodamine dyes adsorbed at submonolayer coverages on a fused silica substrate have been obtained by resonant second-harmonic generation. Polarization dependences
LBL-12003Second harmonic generation is shown to be sensitive enough to deteet molecular monolayers adsorbed on a silver surface. Adsorption of AgCt and pyridine on silver during and after an electrolytic cycle can be easily observed,
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