A pH dependent surface-enhanced Raman sc
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Joydeep Chowdhury; Kana M. Mukherjee; T. N. Misra
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Article
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2000
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John Wiley and Sons
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English
β 89 KB
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Surface-enhanced Raman scattering (SERS) of hypoxanthine (HX) molecule on silver colloid confirms that the molecule in the surface adsorbed state exists as [keto-N9 H9] form at acidic and normal pH but as [enol-O6 H1, N9 H9] form at alkaline pH. It is substantiated by the appearance of an intense ca