Assembly of Chiral Amino-Acids at Surfaces from a Single Molecule Perspective: Proline on Cu(110)

Matthew Forster, Matthew S Dyer, Mats Persson and Rasmita Raval
The Surface Science Research Centre, The University of Liverpool
Liverpool, L69 3BX, UK

Topics in Catalysis, 54 (2011) 13–19

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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