Surface-enhanced Raman scattering from crystal violet adsorbed on a silver electrode |
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| Authors: | Tadashi Watanabe Bruno Pettinger |
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| Institution: | Department of Synthetic Chemistry, Faculty of Engineering, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;Fritz-Haber-Institut der Max-Planck-Gesellschaft, 1000 Berlin 33, West Germany |
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| Abstract: | SERS from crystal violet (CV) on a Ag electrode was investigated under preresonance and resonance conditions. The excitation profile of the chemisorbed species is like that of dissolved molecules but intensities are ≈ 1000 times larger. The Raman enhancement is ≈ 108 and exhibits a specific potential dependence even in the absence of adsorption-desorption process. At potentials where reduction of CV occurs leuco crystal violet was detected. |
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