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EnglishThe adsorption of a bi-functional organic molecule like phenol on Si(100)2 x 1 has been investigated by synchrotron radiation-induced photoemission in the valence band, Si 2p, C 1s and O 1s core-level regions. Experiments have been carried out as a function of phenol exposure at room temperature. Phenol adsorbs on Si(100)2 x 1 through a dissociative mechanism at room temperature, interacting with the surface by its alcoholic functionality. The line-shape analysis of Si 2p spectra indicates the formation of Si-O and Si-H bonds, as a consequence of the cleavage of the C6H5O-H bond and the binding of the fragments (C6H5O-group and H atom) to the Si(100)2 x 1 surface dimers. The progressive quenching of the silicon surface dimer atoms and the corresponding intensity increase of the Si-OC6H5 and Si-H components have been observed as a function of phenol exposure. The presence of the phenoxide (C6H5O-) group on the silicon surface has been evidenced also by the C 1s spectrum, consisting of two components in a 1:5 intensity ratio, energy splitted by 1.5 eV, which can be assigned to carbon atom linked to oxygen (C-O group) and carbon atoms of the aromatic ring, respectively. (c) 2005 Elsevier B.V. All rights reserved.
Casaletto, M P, Carbone, M., Piancastelli, M.N., Horn, K., Weiss, K., et al. (2005). A high resolution photoemission study of phenol adsorption on Si(100)2 x 1. SURFACE SCIENCE, 582(2009/03/01), 42-48.
| Tipologia: | Articolo su rivista | |
| Citazione: | Casaletto, M P, Carbone, M., Piancastelli, M.N., Horn, K., Weiss, K., et al. (2005). A high resolution photoemission study of phenol adsorption on Si(100)2 x 1. SURFACE SCIENCE, 582(2009/03/01), 42-48. | |
| IF: | Con Impact Factor ISI | |
| Lingua: | English | |
| Settore Scientifico Disciplinare: | Settore CHIM/03 - Chimica Generale e Inorganica Settore CHIM/02 - Chimica Fisica | |
| Revisione (peer review): | Sì, ma tipo non specificato | |
| Tipo: | Articolo | |
| Rilevanza: | Rilevanza internazionale | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.susc.2005.03.004 | |
| Stato di pubblicazione: | Pubblicato | |
| Data di pubblicazione: | 2005 | |
| Titolo: | A high resolution photoemission study of phenol adsorption on Si(100)2 x 1 | |
| Autori: | ||
| Autori: | Casaletto; M P; Carbone, M; Piancastelli, M N; Horn, K; Weiss, K; Zanoni, R | |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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