Dresden 2014 – scientific programme
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O: Fachverband Oberflächenphysik
O 97: Organic/bio Molecules on Metal Surfaces IV
O 97.4: Talk
Friday, April 4, 2014, 11:15–11:30, TRE Phy
Hydrogen-bonded networks of triarylamine molecules on noble metal surfaces — •Christian Steiner1, David Gessner1, Ute Meinhardt2, Bettina Gliemann2, Milan Kivala2, and Sabine Maier1 — 1Department of Physics, University of Erlangen-Nürnberg, Germany — 2Department of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Germany
Hydrogen bonding is a highly directional interaction that has successfully been applied towards the construction of complex supramolecular architectures both in bulk and on surfaces. Here, we present a low temperature scanning tunneling microscopy study of hydrogen-bonded networks on noble metal surfaces using triarylamine derivatives functionalized with diaminotriazine and carboxylic moieties as molecular building blocks. While on Au(111) extended hexagonal hydrogen-bonded networks with different pore-sizes are formed, the strong surface-molecule interaction leads to different hydrogen-bonded assemblies on Cu(111). In addition, we performed comparative STM measurements of the same triarylamine networks formed from solution on HOPG in ambient conditions and discuss their structure and stability. Such self-assembled organic nanostructures formed at room temperature and atmospheric pressure are highly appealing with respect to applications.