Structural study of adsorption of isonicotinic acid and related molecules on rutile TiO2(110). I: XAS and STM

Content Provider	Semantic Scholar
Author	Schnadt, Joachim Schiessling, Joachim O'Shea, James N. Gray, Struan Patthey, Luc Johansson, Mikael Krempaský, Juraj Åhlund, John Karlsson, Patrik G. Persson, Petter Mårtensson, Nils Brühwiler, Paul A.
Copyright Year	2003
Abstract	The adsorption of monolayers of the pyridine-carboxylic acid monomers (isonicotinic acid, nicotinic acid, and picolinic acid) on rutile TiO2(1 1 0) has been studied by means of X-ray photoemission spectroscopy. An investigation of the O 1s spectra shows that the molecular carboxylic groups are deprotonated and, hence, that the molecules bind to the surface in a bidentate mode. Moreover, the binding energy of those core levels that are related to the pyridine ring atoms shift as a function of molecule relative to the substrate O 1s and Ti 3p levels, while the position of the core levels related to emission from the carboxylic group are constant relative to the substrate levels. The molecule-dependent shifts are attributed to local intermolecular interactions that determine the proximity of adjacent molecular rings and thus the core-hole screening response of the neighbouring molecules. We propose a simple molecular arrangement for each case which satisfies the known constraints. (C) 2003 Elsevier B.V. All rights reserved. (Less)
Starting Page	39
Ending Page	54
Page Count	16
File Format	PDF HTM / HTML
DOI	10.1016/S0039-6028(03)00827-6
Volume Number	540
Alternate Webpage(s)	https://www.nottingham.ac.uk/~ppzstm/pdfs/papers/2003/schnadt_structural2.pdf
Alternate Webpage(s)	https://doi.org/10.1016/S0039-6028%2803%2900827-6
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article