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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/LG12003" target="_blank" >LG12003: Optická dráha materiálového výzkumu na synchrotronu Elettra v Terstu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

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Svazek periodika

117

Číslo periodika v rámci svazku

36

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

18423-18433

Kód UT WoS článku

000330162700017

EID výsledku v databázi Scopus

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