https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37110 R surface. Although very little difference was observed in the molecular orientation of the two enantiomers as observed with near-edge X-ray absorption fine structure, a large variation in the sulfur bond scission energy was measured using a high-resolution X-ray photoelectron spectroscopy thermal annealing sequence. As a result of this scission process, enantiomers of cysteine molecules completely dissociate into alaninate at temperatures separated by as much as 16 K or 0.06 eV which is one of the largest stereo effects observed on chiral metal surfaces.]]> Tue 18 Aug 2020 13:18:42 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:22267 R surface. Very little enantioselectivity was observed in the HR-XPS thermal desorption; however, there was a large difference in the dissociation products left on the surface between the two enantiomers. NEXAFS spectroscopy also exhibited only minor differences in the molecular adsorption of the two enantiomer layers; however, low-energy electron diffraction (LEED) images revealed significant differences in the structure of the adsorbed layers. d-alanine forms a p(2 × 3) overlayer while l-alanine forms a combination of p(1 × 2) overlayer and faceted steps oriented in the [−110] direction. Intermolecular bonding and steric effects play a significant role in these stereoselective differences by maximizing the hydrogen bonding between the molecules. This study clearly shows that single chiral tests are not adequate to ascertain the true enantioselective properties of the given system.]]> Sat 24 Mar 2018 07:17:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34701 Mon 15 Apr 2019 09:12:07 AEST ]]>