Hydrogen-Bond Induced Surface Core-Level Shift in Isonicotinic Acid
The Journal of Physical Chemistry B2001Vol. 105(10), pp. 1917–1920
Citations Over TimeTop 10% of 2001 papers
James N. O’Shea, Joachim Schnadt, P. A. Brühwiler, Hendrik Hillesheimer, N. Mårtensson, L. Patthey, Juraj Krempaský, Chuan‐Kui Wang, Yi Luo, Hans Ågren
Abstract
Intermolecular hydrogen-bonding in thick films of isonicotinic acid evaporated onto rutile TiO2(110) has been investigated with X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The rate of deposition is found to be a key factor in overcoming the kinetic barriers to extensive hydrogen-bond formation, which, when present, gives rise to large energy shifts between bulk and surface in both the N1s XPS and XAS. The origin of the surface core-level shift is attributed to the presence of non-hydrogen-bonded nitrogen atoms in the surface layer.
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