N-Acetylalanine Monolayers at the Silver Surface Investigated by Surface Enhanced Raman Scattering Spectroscopy and X-ray Photoelectron Spectroscopy: Effect of Metallic Ions

Abstract

Surface-enhanced Raman scattering (SERS) spectroscopy was applied to observe the process and structure of N-acetylalanine molecules self-assembled at the silver surface. SERS data show that the N-acetylalanine molecules adsorb at the silver surface through the amino group and the entire carboxyl group in a perpendicular way after a self-reorganization. Results of SERS and X-ray photoelectron spectroscopic experiments indicate that the Ce 3+ affects the structure of monolayers because of the binding reaction between the Ce 3+ and the carbonyl along with the amino groups in N-acetylalanine. The Ce 3+ capped by N-acetylalanine monolayers can be removed by adding EDTA solution and the original structure of monolayers is recovered. However, the impact of K + on the structure of N-acetylalanine monolayers is slight and can be ignored.

Effect of Pb2+ on L‐glutathione monolayers on a silver surface investigated by surface‐enhanced Raman scattering spectroscopy

“…[42] ) is introduced to observe its effect on the L-Glut(R) monolayers. Figure 3(b) displays the SERS spectrum recorded from L-Glut(R) monolayers after addition of 0.1 mM Pb(NO 3 ) 2 solution.…”

Enhanced Protein Immobilization Efficiency on a TiO2 Surface Modified with a Hydroxyl Functional Group

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pH‐dependent surface‐enhanced Raman scattering observation of sulfanilamide on the silver surface

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