Abstract
We present a molecule-by-molecule mapping of an amino-acid monolayer on a Cu(110) surface in which individual molecular configuration, bonding and adsorption footprints are identified. This detailed mapping provides direct evidence that the (4 × 2) structures of enantiopure and racemic proline are governed by a strict heterochiral adsorption footprint template. For the racemic system this has an interesting consequence, namely that it leads to a 2-D random solid solution, a situation that is rarely encountered in 3-D.
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Acknowledgments
R.R and M.F acknowledge the Engineering and Physical Sciences Research Council (EPSRC), EU seventh framework small scale collaborative project RESOLVE (NMP4-SL-2008-214340) and the University of Liverpool for equipment grants, funding and a studentship for M.F. M.P acknowledges the Swedish Research Council (VR) and the Marie Curie Research Training Network PRAIRIES, contract MRTN-CT-2006-035810. M.S.D acknowledges the University of Liverpool for funding of a postdoctoral fellowship and computational resources.
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Forster, M., Dyer, M.S., Persson, M. et al. Assembly of Chiral Amino-Acids at Surfaces from a Single Molecule Perspective: Proline on Cu(110). Top Catal 54, 13–19 (2011). https://doi.org/10.1007/s11244-011-9634-9
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DOI: https://doi.org/10.1007/s11244-011-9634-9