A1 Refereed original research article in a scientific journal
Adsorption of 3,4-ethylenedioxythiophene (EDOT) on noble metal surfaces: A photoemission and X-ray absorption study
Authors: Pasquali L, Terzi F, Montecchi M, Doyle BP, Lukkari J, Zanfrognini B, Seeber R, Nannarone S
Publisher: ELSEVIER SCIENCE BV
Publication year: 2009
Journal:Journal of Electron Spectroscopy and Related Phenomena
Journal name in sourceJOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
Journal acronym: J ELECTRON SPECTROSC
Volume: 172
Issue: 1-3
First page : 114
Last page: 119
Number of pages: 6
ISSN: 0368-2048
DOI: https://doi.org/10.1016/j.elspec.2009.03.014
Abstract
The adsorption of 3,4-ethylenedioxythiophene (EDOT) on Au and Pt surfaces is studied by core level and valence band photoemission using synchrotron radiation and by near edge X-ray absorption spectroscopy. To closer simulate real applications, the films are grown from aqueous solution at room temperature and are compared to an 'ideal' film prepared by dosing the molecules from the vapour phase on a clean Au(1 1 1) single crystal. The S 2p. C 1s and O 1s levels show multiple components which are associated to molecular fragmentation. NEXAFS confirms that fragmentation takes place at the surface. Thiophene species as well as alkyl chains and S(n) species are identified as the most probable fragmentation products. (C) 2009 Elsevier B.V. All rights reserved.
The adsorption of 3,4-ethylenedioxythiophene (EDOT) on Au and Pt surfaces is studied by core level and valence band photoemission using synchrotron radiation and by near edge X-ray absorption spectroscopy. To closer simulate real applications, the films are grown from aqueous solution at room temperature and are compared to an 'ideal' film prepared by dosing the molecules from the vapour phase on a clean Au(1 1 1) single crystal. The S 2p. C 1s and O 1s levels show multiple components which are associated to molecular fragmentation. NEXAFS confirms that fragmentation takes place at the surface. Thiophene species as well as alkyl chains and S(n) species are identified as the most probable fragmentation products. (C) 2009 Elsevier B.V. All rights reserved.
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