Electronic Structure of 1,3,5,7-Cyclooctatetraene Chemisorbed on Si(001)-2×1 at 300 K Studied by PES, NEXAFS, and Resonant Valence Band Spectroscopy

Autor:	and J.-J. Gallet, Georges Dufour, L. Lozzi, Fausto Sirotti, Fabrice Bournel, François Rochet
Rok vydání:	2002
Předmět:	Photoemission spectroscopy Chemistry Electronic structure XANES Surfaces Coatings and Films law.invention Crystallography Chemisorption law Materials Chemistry Physical and Theoretical Chemistry Atomic physics Scanning tunneling microscope Spectroscopy Vicinal Surface states
Zdroj:	The Journal of Physical Chemistry B. 106:4967-4973
ISSN:	1520-5207 1520-6106
DOI:	10.1021/jp013780m
Popis:	The electronic structure of 1,3,5,7-cyclooctatetraene, an antiaromatic molecule, adsorbed on Si(001)-2×1 at 300 K has been investigated by a combination of core-level spectroscopies using synchrotron radiation. Si 2p and C 1s photoemission spectroscopy (PES) are used to follow the reaction of silicon surface states and the formation of Si−C bonds. C 1s near-edge X-ray absorption fine structure (NEXAFS) spectroscopy shows that p bonds survive after chemisorption. The orientational order of the free p bonds is deduced from the angular dependence of the NEXAFS spectra; performed on a single domain (vicinal) surface, this study indicates that multiple adsorption geometries are actually adopted by the chemisorbed molecules. Finally, resonant valence band spectroscopy gives the binding energy position of the occupied p band of the chemisorbates, information that may be useful for the interpretation of scanning tunneling microscopy images.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de2975b23a2da5655fa787d893fd6dd3 https://doi.org/10.1021/jp013780m Zobrazit plný text záznamu