Berlin 2008 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 18: Poster Session I - MA 141/144 (Atomic Wires; Size-Selected Clusters; Nanostructures; Metal Substrates: Clean Surfaces+Adsorption of Organic / Bio Molecules+Solid-Liquid Interfaces+Adsorption of O and/or H; Surface or Interface Magnetism; Oxides and Insulators: Clean Surfaces)
O 18.54: Poster
Montag, 25. Februar 2008, 18:30–19:30, Poster F
Fundamental concepts for the structure formation of metalorganic networks based on oligopyridines and copper — •Achim Breitruck1, Harry E. Hoster1, Christoph Meier2, Ulrich Ziener2, and R. Jürgen Behm1 — 1Institute of Surface Chemistry and Catalysis, Ulm University, D-89069 Ulm — 2Institute of Organic Chemistry III, Ulm University, D-89069 Ulm
We studied the structures of metalorganic coordination networks formed by Cu co-deposited with Bis-terpyridine (BTP) molecules on graphite (HOPG). BTP molecules have been shown to form highly ordered adlayers stabilized by C-H···N type hydrogen bonds.[1] Using these adlayers as precursors, subsequent deposition of Cu leads to a partial lift of the hydrogen bonds to allow for the formation of even more stable Cu···N-pyridine interactions.[2] Depending on the deposited amount of Cu and BTP and also on the sample temperature during and after Cu deposition we find a high variety of ordered metalorganic 2D structures. Despite this large variety, similar characteristic building blocks were observed, in which Cu centers are surrounded by BTP molecules to form chiral units like CunBTPm (n = 1, 2; m= 3, 4)[2] out of achiral BTP’s.
[1] H.E. Hoster, M. Roos, A. Breitruck, C. Meier, K. Tonigold, T. Waldmann, U. Ziener, K. Landfester, R.J. Behm, Langmuir 23, 11570-11579 (2007)
[2] A. Breitruck, H.E. Hoster, C. Meier, U. Ziener, R.J. Behm, Surf. Sci. 601, 4200-4205 (2007)