Results 151 to 160 of about 1,355 (182)
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Adenine adlayers on Cu(111): XPS and NEXAFS study
The Journal of Chemical Physics, 2015The adsorption of adenine on Cu(111) was studied by photoelectron and near edge x-ray absorption fine structure spectroscopy. Disordered molecular films were deposited by means of physical vapor deposition on the substrate at room temperature. Adenine chemisorbs on the Cu(111) surface with strong rehybridization of the molecular orbitals and the Cu 3d ...
Nataliya Tsud +5 more
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The nature of nitrate at the ice surface studied by XPS and NEXAFS
Physical Chemistry Chemical Physics, 2010Trace contaminants such as strong acids have been suggested to affect the thickness of the quasi-liquid layer at the ice/air interface, which is at the heart of heterogeneous chemical reactions between snowpacks or cirrus clouds and the surrounding air.
Krepelová A +4 more
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Temperature Dependence in the NEXAFS Spectra of n-Alkanes
The Journal of Physical Chemistry A, 2018The near edge X-ray absorption fine structure (NEXAFS) spectra of orthorhombic single crystals of n-octacosane ( n-C28H58), recorded at room temperature (298 K) and at cryogenic temperatures (93 K), show distinct differences. The characteristic carbon 1s → σ*C-H band in the NEXAFS spectrum of n-C28H58 is broader and has a lower-energy onset in its room
Sahan D. Perera +3 more
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Orientation of aromatic hydrocarbons on metal surfaces as determined by nexafs
Surface Science, 1987Near edge X-ray absorption spectroscopy (NEXAFS) using synchrotron radiation from the BESSY storage ring and a new plane grating monochromator has been applied to study the orientation of ordered layers of benze, naphthalene, anthracene, tetracene, perylene and coronene on Ag(111) and Cu(100) substrates. While the first three hydrocarbons were adsorbed
P. Yannoulis +3 more
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NEXAFS and SEXAFS studies of chemisorbed molecules
Applied Physics A Solids and Surfaces, 1985Near-edge x-ray absorption fine structure (NEXAFS) and surface extended x-ray absorption fine structure (SEXAFS) spectroscopies and their application to the determination of the adsorption geometry and bonding of low-Z molecules on surfaces are discussed.
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An experimental and theoretical investigation of XPS and NEXAFS of 5-halouracils
Physical Chemistry Chemical Physics, 2018Experimental and DFT-based theoretical studies of XPS and NEXAFS of 5-halouracils reveal the aromatic/conjugate properties of these molecules.
M. C. Castrovilli +5 more
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C KEdge NEXAFS of 6HSiC and 3CSiC Systems
Physica Scripta, 2005Silicon carbide polytipes 6H-SiC and 3C-SiC were characterized by optical absorption at the C K edge in the near edge absorption region. 3C-SiC and 6H-SiC showed similarities for energies about 15 eV above the edge. Marked differences were found in the near edge region.
M Pedio +9 more
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A NIXSW and NEXAFS investigation of thiophene on Cu(111)
Surface Science, 1998The local registry and geometry of thiophene at sub-monolayer coverages on Cu(111) has been probed with normal incidence X-ray standing wavefield absorption (NIXSW) and near edge X-ray absorption fine structure (NEXAFS). Thiophene was found to adopt a flat geometry on the surface with the sulphur atom in an atop position.
P Milligan +5 more
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Surface Crystallography by Means of SEXAFS and NEXAFS
1984The availability of high brightness (flux/unit area) monochromatized synchrotron radiation [10.1] has allowed the development of new experimental techniques which tune into specific surface atoms and probe their structural environment. Two such techniques, the subject of this chapter, are the surface extended X-ray absorption fine structure (SEXAFS ...
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