Adsorption of Cytosine and AZA Derivatives of Cytidine on Au Single Crystal Surfaces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10191889" target="_blank" >RIV/00216208:11320/13:10191889 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/jp404821t" target="_blank" >http://dx.doi.org/10.1021/jp404821t</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jp404821t" target="_blank" >10.1021/jp404821t</a>

Result language
angličtina
Original language name
Adsorption of Cytosine and AZA Derivatives of Cytidine on Au Single Crystal Surfaces
Original language description
The adsorption of cytosine on the Au(111) and Au(110) surfaces has been studied using both aqueous deposition and evaporation in vacuum to prepare the samples. Soft X-ray photoelectron spectroscopy (XPS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS) were used to determine the electronic structure and orientation of the adsorbates. In addition, three derivatives of cytosine, 6-azacytosine, 6-azacytidine, and 5-azacytidine, were studied. Monolayer films of the latter three samples were adsorbed on Au(111) from aqueous solution, and the nature of bonding was determined. Spectra have been interpreted in the light of published calculations of free cytosine molecules and new ab initio calculations of the other compounds. Surface core level shifts of Au 4f imply that all of these compounds are chemisorbed. Cytosine adsorbs as a single tautomer but in two chemical states with different surface-molecule bonding. For deposition in vacuum, a flat-lying molecular state bonded
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/LG12003" target="_blank" >LG12003: Materials science beamline at synchrotron Elettra in Trieste</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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