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Aromatic interactions in the close packing of phenyl-imides at Cu(110) surfaces

Davies, Philip Rosser, Edwards, Dyfan and Richards, Darran 2004. Aromatic interactions in the close packing of phenyl-imides at Cu(110) surfaces. Surface Science 573 (2) , pp. 284-290. 10.1016/j.susc.2004.09.039

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The oxidation of aniline at Cu(1 1 0) surfaces at 290 K has been studied by XPS and STM. A single chemisorbed product, assigned to a phenyl imide (C6H5N(a)), is formed together with water which desorbs. Reaction with preadsorbed oxygen results in a maximum surface concentration of phenyl imide of 2.8 × 1014 mol cm−2 and a surface dominated by domains of three structures described by , and unit meshes. However, concentrations of phenyl imide of up to 3.3 × 1014 mol cm−2 were obtained from the coadsorption of aniline and dioxygen (300:1 mixture) resulting in a highly ordered biphasic structure with and domains. Comparison of the STM and XPS data shows that only half the phenyl imides at the surface are imaged. Pi-stacking of the phenyl rings is proposed to account for this observation.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: X-ray photoelectron spectroscopy; Scanning tunneling microscopy; Chemisorption; Surface structure, morphology, roughness, and topography; Copper; Aromatics; Low index single crystal surfaces
Publisher: Elsevier
ISSN: 0039-6028
Last Modified: 17 Jun 2017 03:04

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