Dresden 2014 – scientific programme
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O: Fachverband Oberflächenphysik
O 97: Organic/bio Molecules on Metal Surfaces IV
O 97.2: Talk
Friday, April 4, 2014, 10:45–11:00, TRE Phy
From terpyridine species to metal organic coordination networks — •Thomas Dienel1, Roland Widmer1, Ralph Koitz2, Marcella Iannuzzi2, A. Dieter Schlüter3, Jürg Hutter2, and Oliver Gröning1 — 1nanotech@surfaces Lab, Empa, Überlandstrasse 129, CH-8600 Dübendorf, Schweiz — 2Department of Chemistry, University of Zurich, CH-8057 Zürich, Schweiz — 3Department of Materials, Institute of Polymers, ETH Zürich, CH-8093 Zürich, Schweiz
Substrate-supported metal organic coordination networks offer the possibility to adjust electronic and magnetic properties on the nanometer scale and represent a step towards the realization of two-dimensional polymers [1]. Here, we report on the adsorption behavior of trifunctional terpyridine monomers on coinage metals by means of low-temperature scanning tunneling microscopy. On copper (Cu(111)), the orientation of the terpyridine molecules exhibits a pronounced anisotropy, while a similar behavior was not observed for silver and gold. This is analyzed by density functional theory, revealing specific registries between the monomers and the corresponding substrates. We discuss the impact of this registry on the formation of self-assembled metal organic coordination networks by copper or iron adatoms.
[1] T. Bauer, Z. Zheng, A. Renn, R. Enning, A. Stemmer, J. Sakamoto, A.D. Schlüter, Angewandte Chemie International Edition, 50, 7879-7884 (2011).