Regensburg 2013 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 35: Poster Session I (Metal, semiconductor and oxide substrates: structure and adsorbates; Graphene)
O 35.35: Poster
Dienstag, 12. März 2013, 18:15–21:45, Poster B1
Unraveling the adsorption geometry of a 2D metal-organic framework on Cu(111) — Manfred Matena1, Jonas Björk2, Kathrin Müller3, Jorge Lobo-Checa4, Lutz H. Gade5, Thomas A. Jung1, Mats Persson6, and •Meike Stöhr3 — 1University of Basel — 2University of Linköping — 3University of Groningen — 4DIPC, San Sebastian — 5University of Heidelberg — 6University of Liverpool
The interest in studying organic nanostructures on surfaces emerges from their prospective applications in nanoscale electronic or optoelectronic devices, in which the spatially addressable functional units are to be assembled on the molecular level. By making use of molecular recognition processes based on non-covalent interactions, well-ordered 1D and 2D molecular structures can be formed on surfaces. Especially, the understanding of the interplay of the underlying intermolecular and molecule substrate interactions are of great research interest since they are responsible for the structure formation and the resulting electronic properties. We report for the perylene derivative DPDI the formation of a nanoporous metal-organic framework (MOF) on Cu(111) upon annealing at 200°C. Scanning tunneling microscopy, low energy electron diffraction, photoemission spectroscopy and X-ray standing wave measurements as well as DFT calculations were carried out to obtain a thorough understanding of the involved interactions and observed (electronic) phenomena. By comparing these findings to similar metal-organic coordination networks common features and differences can be identified.