Mapping Complex Chiral Adlayers: A Truly Random 2-D Solid Solution of (RS)-3-Pyrroline-2-Carboxylic Acid on Cu(110)
Artikel i övriga tidskrifter, 2011

The characterization of chiral molecular adlayers remains a considerable challenge, ultimately requiring detailed knowledge of the molecular chirality, the chemical form, molecular orientation, and interaction with the surface for each molecule within the assembly. In this work, we show that the (4 x 2) organization of a racemic mixture of the amino acid derivative 3-pyrroline-2-carboxylic acid (PCA) on Cu(110) may be analyzed at the single-molecule level in which the molecular chirality and adsorption footprints of each molecule are identified. Such a detailed mapping reveals the surprising outcome that within the racemic (4 x 2) organization the adlayer does not form either the 2-D racemic compound or racemic conglomerate. Instead, both the molecular chirality and adsorption footprints are randomly distributed, creating a truly random solid solution in which both molecular chirality and footprint chirality are scrambled.

asymmetric hydrogenation

metal-surfaces

enantiopure alanine

adsorption footprints

single-molecule level

electronic-structure

platinum

amino

glycine

local-structure

Författare

M. Forster

University of Liverpool

M. S. Dyer

University of Liverpool

S. D. Barrett

University of Liverpool

Mats Persson

Chalmers, Teknisk fysik, Material- och ytteori

R. Raval

University of Liverpool

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 115 1180-1185

Ämneskategorier

Materialteknik

Kemi

DOI

10.1021/jp1065314