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Orientation and stability of a bi-functional aromatic organic molecular adsorbate on silicon

O'Donnell, KM; Hedgeland, H; Moore, G; Suleman, A; Siegl, M; Thomsen, L; Warschkow, O; (2016) Orientation and stability of a bi-functional aromatic organic molecular adsorbate on silicon. Physical Chemistry Chemical Physics , 18 (39) pp. 27290-27299. 10.1039/c6cp04328c. Green open access

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Abstract

In this work we combine scanning tunneling microscopy, near-edge X-ray absorption fine structure spectroscopy, X-ray photoemission spectroscopy and density functional theory to resolve a long-standing confusion regarding the adsorption behaviour of benzonitrile on Si(001) at room temperature. We find that a trough-bridging structure is sufficient to explain adsorption at low coverages. At higher coverages when steric hindrance prevents the phenyl ring lying flat on the surface, the 2+2 cycloaddition structure dominates.

Type: Article
Title: Orientation and stability of a bi-functional aromatic organic molecular adsorbate on silicon
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c6cp04328c
Publisher version: http://dx.doi.org/10.1039/c6cp04328c
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Keywords: Science & Technology, Physical Sciences, Chemistry, Physical, Physics, Atomic, Molecular & Chemical, Chemistry, Physics, SI(100)-2 X-1, AUSTRALIAN SYNCHROTRON, ADSORPTION, BENZONITRILE, ABSORPTION, DEVICES, BINDING, SURFACE, NEXAFS, FILMS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1529616
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