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SERS of acrylic acid and methyl derivatives on silver sols

✍ Scribed by J. F. Arenas; J. L. Castro; J. C. Otero; J. I. Marcos

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
267 KB
Volume
29
Category
Article
ISSN
0377-0486

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✦ Synopsis

The surface-enhanced Raman scattering (SERS) spectra on silver colloids of acrylic acid and three methyl derivatives crotonic (3-methylacrylic), methacrylic (2-methylacrylic) and 3,3-dimethylacrylic acid, were recorded and analysed at di †erent concentrations. At high concentrations the respective SERS spectra are explained as being due to the adsorption of the respective anionic forms via the p-ethylenic system or via the carboxylate group, except in the case acrylic acid, for which the presence of the propionate ion was also detected. The SERS of 3,3dimethylacrylate is not a †ected by the concentration of the adsorbate, whereas for the remaining acids the SERS obtained at low concentration show the same spectrum as the saturated monocarboxylic acids in dilute conditions.

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