Iron(II) spin crossover films on Au(111): scanning probe microscopy and photoelectron spectroscopy

The growth of films of [H2B(pz)2]Fe(ii)(bpy) on Au(111) is characterized from the bilayer film to multilayer film regime. Scanning tunneling microscopy shows a transition from a well-ordered, uniform bilayer film to a poorly-ordered film at larger thicknesses. Previous local tunneling spectroscopy a...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2013-11, Vol.49 (89), p.10446-10452
Main Authors: Pronschinske, Alex, Bruce, Robert C, Lewis, Geoff, Chen, Yifeng, Calzolari, Arrigo, Buongiorno-Nardelli, Marco, Shultz, David A, You, Wei, Dougherty, Daniel B
Format: Article
Language:English
Subjects:
Crossovers
Morphology
Photoelectron spectroscopy
Pictures
Reduction
Scanning tunneling microscopy
Spectra
Thickness
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Summary:The growth of films of [H2B(pz)2]Fe(ii)(bpy) on Au(111) is characterized from the bilayer film to multilayer film regime. Scanning tunneling microscopy shows a transition from a well-ordered, uniform bilayer film to a poorly-ordered film at larger thicknesses. Previous local tunneling spectroscopy and conductance mapping in bilayer films permit the identification of coexisting molecular spin-states at all temperatures. New ultraviolet photoelectron spectroscopy is consistent with this picture and in agreement with the density of states calculated by density functional theory. In thicker films with a polycrystalline morphology, evidence for a more bulk-like change in spin composition as a function of temperature is obtained by observing the reduction in intensity of Fe 2p core level satellites in X-ray photoelectron spectra.
ISSN:1359-7345
1364-548X
DOI:10.1039/c3cc44904a