Dynamic Diastereomerism on Chiral Surfaces.


Type
Article
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Abstract

Adsorption of chiral molecules on chiral surfaces implies diastereomerism, evident in the adoption of distinct adsorption geometries. We show here that this diastereomerism produces a signature in the motion of chiral molecules desorbing from a chiral surface. The rotations of S- and R-alanine molecules are analyzed upon desorption from R-Cu{531} using first-principles molecular dynamics simulations. S-Ala molecules exhibit a larger angular momentum, with a clear preference for one rotational sense, whereas no such preference is observed for R-Ala molecules upon desorption from this surface. These trends would be reversed for desorption from the S-Cu{531} surface. Possible applications include chiral separation techniques and enantiospecific sensors.

Description
Keywords
3403 Macromolecular and Materials Chemistry, 34 Chemical Sciences, 3406 Physical Chemistry
Journal Title
J Phys Chem C Nanomater Interfaces
Conference Name
Journal ISSN
1932-7447
1932-7455
Volume Title
Publisher
American Chemical Society (ACS)
Sponsorship
EPSRC (2112388)
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