Orientation of Benzene and Phenoxy on the Polar ZnO(0001)−Zn Surface

Autor:	A. Gutiérrez Sosa, and C. T. Campbell, S. C. Parker, T. M. Evans, Geoff Thornton
Rok vydání:	2001
Předmět:	Chemistry Photochemistry XANES Surfaces Coatings and Films Metal Crystallography chemistry.chemical_compound Adsorption Tilt (optics) visual_art Materials Chemistry visual_art.visual_art_medium Polar Physical and Theoretical Chemistry Absorption (chemistry) Benzene Spectroscopy
Zdroj:	The Journal of Physical Chemistry B. 105:3783-3785
ISSN:	1520-5207 1520-6106
DOI:	10.1021/jp0034123
Popis:	Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy at the C K-edge has been used to investigate the orientation of benzene and phenoxy on the Zn-terminated basal face of ZnO. From these results, we deduce that benzene is oriented more or less parallel to the surface, bonding through its π orbitals, whereas the phenoxy formed on exposure to phenol is bonded through O atop Zn. Benzene has an apparent tilt angle of the ring plane with respect to the surface of 11 ± 5°, whereas exposure to phenol results in a tilt angle of 35 ± 5°. These tilt angles are similar to those obtained after adsorption on metal surfaces. The data are consistent with a stabilization mechanism of this polar surface which does not involve a substantial reconstruction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f6a0e4d8e715dcb06e47c5f359ae9d79 https://doi.org/10.1021/jp0034123 Zobrazit plný text záznamu