Accessibility navigation


“Pop-on and pop-off” surface chemistry of alanine on Ni{111} under elevated hydrogen pressures

Nicklin, R. E. J., Shavorskiy, A., Aksoy Akgul, F., Liu, Z., Bennett, R. A. ORCID: https://orcid.org/0000-0001-6266-3510, Sacchi, M. and Held, G. (2018) “Pop-on and pop-off” surface chemistry of alanine on Ni{111} under elevated hydrogen pressures. The Journal of Physical Chemistry C, 122 (14). pp. 7720-7730. ISSN 1932-7447

[img]
Preview
Text - Accepted Version
· Please see our End User Agreement before downloading.

6MB
[img]
Preview
Text - Supplemental Material
· Please see our End User Agreement before downloading.

1MB
[img] Text - Supplemental Material
· Please see our End User Agreement before downloading.

6kB
[img] Text - Supplemental Material
· Please see our End User Agreement before downloading.

6kB

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1021/acs.jpcc.8b00186

Abstract/Summary

The co-adsorption of hydrogen with a simple chiral modifier, alanine, on Ni{111} was studied using Density Functional Theory in combination with ambient-pressure X-ray photoelectron spectros opy and X-ray absorption spectroscopy at temperatures of 300 K and above, which are representative of chiral hydrogenation reactions. Depending on the hydrogen pressure, the surface enables protons to ''pop on and off'' the modifier molecules, thus significantly altering the adsorption geometry and chemical nature of alanine from anionic tridentate in ultra-high vacuum to predominantly zwitterionic bidentate at hydrogen pressures above 0.1 Torr. This hydrogen-stabilised modifier geometry allows alternative mechanisms for proton transfer and the creation of enatioselective reaction environments.

Item Type:Article
Refereed:Yes
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:77042
Publisher:ACS Publications

Downloads

Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation