title: Structure-sensitive enantiospecific adsorption on naturally chiral Cu(hkl)R&Ssurfaces.
abstract: The desorption kinetics of a chiral compound, R-3-methylcyclohexanone (R-3MCHO), have been measured on both enantiomers of seven chiral Cu(hkl)R&Ssurfaces and on nine achiral Cu single crystal surfaces with surface structures that collectively span the various regions of the stereographic triangle. The naturally chiral surfaces have terrace-step-kink structures formed by all six possible combinations of the three low Miller index microfacets. The chirality of the kink sites is defined by the rotational orientation of the (1 1 1), (1 0 0) and (1 1 0) microfacets forming the kink. R-3MCHO adsorbs reversibly on these Cu surfaces and temperature programmed desorption has been used to measure its desorption energetics from the chiral kink sites. The desorption energies from the R- and S-kink sites are enantiospecific, [Formula: see text], on the chiral surfaces. The magnitude of the enantiospecificity is [Formula: see text]  ≈  1 kJ mol-1on all seven chiral surfaces. However, the values of [Formula: see text] are sensitive to elements of the surface structure other than just their sense of chirality as defined by the rotational orientation of the low Miller index microfacets forming the kinks; [Formula: see text] changes sign within the set of surfaces of a given chirality.
authors.affiliation: Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA. W.E. Scott Institute for Energy Innovation, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Gellman
authors.forename: Ye
authors.initials: Y
authors.lastname: Huang
authors.forename: Anjanette J
authors.initials: AJ
authors.lastname: Koritnik
authors.forename: Joshua D
authors.initials: JD
authors.lastname: Horvath