Title | Enantiomeric electro-oxidation of D- and L-glucose on chiral gold single crystal surfaces |
Publication Type | Papers in Scientific Journals |
Year of Publication | 2003 |
Authors | Martins A., Ferreira V. C., Queirós A., Aroso I. M., Fernando Sousa Silva A., and Feliu J. |
Abstract | The enantioselectivity of the gold chiral surfaces towards the electrocatalytic oxidation of d- and l-glucose in neutral phosphate-buffered media is reported. Two enantiomorphic surfaces were used, Au{3 2 1}R and Au{3 2 1}S, and results obtained by cyclic voltammetry were compared with two non-chiral surfaces having the same terrace and step orientations, Au(1 1 1) and Au(2 1 1). An enantioselective effect is observed, Au{3 2 1}R exhibits a higher activity for d-glucose while Au{3 2 1}S exhibits a higher activity for l-glucose. The corresponding enantioselectivity factor was estimated to 10% for the process occurring at lower potential values and to 50% for the process at higher potential values. These results represent the first evidence that gold chiral surfaces are capable of enantiomeric discrimination. |
Journal | Electrochemistry Communications |
Volume | 5 |
Issue | 9 |
Pagination | 741-746 |
Date Published | 2003-09-01 |
Publisher | Elsevier |
ISSN | 1388-2481 |
DOI | 10.1016/S1388-2481(03)00182-6 |
URL | http://www.sciencedirect.com/science/article/pii/S1388248103001826 |
Keywords | Chiral surfaces, Enantioselectivity, Glucose electro-oxidation, Gold |
Rights | restrictedAccess |
Peer reviewed | yes |
Status | published |