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C. Garrido, T. Aguayo, E. Clavijo, J. S. Gómez-Jeria and M. M. Campos-Vallette The effect of the pH on the interaction of L-arginine with colloidal silver nanoparticles. A Raman and SERS study Journal of Raman Spectroscopy 44

Version of Record online: 4 JUN 2013 | DOI: 10.1002/jrs.4331

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A new methodology is proposed to obtain Raman and SERS spectral reproducibility for biological samples in solution. The arginine-silver nanoparticles interaction in aqueous solution is highly dependent on the pH. The UV-visible and zeta potential measurements allow evaluate the stability of the system Arg-AgNps at the different pH conditions studied. Theoretical calculations performed by using extended Hückel theory method for a structural model of the Arg-Ag layer interaction complete and support SERS results.

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