- Title
- Enantiospecific adsorption and decomposition of cysteine enantiomers on the chiral cu{421}R surface
- Creator
- Gladys, Michael J.; O'Donnell, Kane; Tadich, Anton; Yook, Hyunwoo; Han, Jeong Woo; Thomsen, Lars
- Relation
- Journal of Physical Chemistry C Vol. 123, Issue 34, p. 20829-20837
- Publisher Link
- http://dx.doi.org/10.1021/acs.jpcc.9b03373
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2019
- Description
- A detailed understanding of the bonding and molecular geometry characteristics of amino acids on chiral surfaces is vital toward discovering new pathways in chiral chemistry. Saturated layers of d- and l-cysteine amino acids were chemisorbed onto a chiral Cu{421}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.
- Subject
- molecular structure; peptides and proteins; adsorption; molecules
- Identifier
- http://hdl.handle.net/1959.13/1416737
- Identifier
- uon:37110
- Identifier
- ISSN:1932-7447
- Language
- eng
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