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Adsorption of l-alanine on the Cu{111} single crystal surface was investigated as a model system for interactions between small chiral modifier molecules and close-packed metal surfaces. Synchrotron-based X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy are used to determine the chemical state, bond coordination and out-of-plane orientation...
We apply modern synchrotron-based structural techniques to the study of serine adsorbed on the pure and Au-modified intrinsically chiral Cu{531} surface. XPS and NEXAFS data in combination with DFT show that on the pure surface both enantiomers adsorb in μ4 geometries (with de-protonated β-OH groups) at low coverage and in μ3 geometries at saturation coverage. Significantly larger enantiomeric differences...
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