Dresden 2014 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 62: Posters: Surface Reactions and Dynamics, Nanostructures

O 62.30: Poster

Mittwoch, 2. April 2014, 17:30–21:00, P1

First Steps Towards Anchoring Large Functional Organic Molecules on MgO(100) — •Quratulain Tariq, Michael Röckert, Matthias Franke, Hans-Peter Steinrück, and Ole Lytken — Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, 91058 Erlangen, Egerlandstraße 3, Germany

The emerging field of organic/oxide interfaces has a huge scientific and technological potential in molecular electronics, solar energy conversion, catalysis or sensor development. At the microscopic level, however, oxide bonding sites, interaction mechanisms, bonding geometries and structure formation processes at organic/oxide interfaces are among the most poorly understood and least controlled aspects of such systems. Controlled growth of nanostructured films requires selective bonding between particular linker groups and specific surface sites. Such linkers may also generate a defined molecular contact to larger functional molecular entities such as porphyrins or fullerenes. By an appropriate choice of the linker groups, the bonding sites, orientation, density and ordering of such systems could in principle be controlled. In present study, we will be investigating the surface interactions, thermal stability and transformations of the benzonitrile (C6H5-CN) and catechol (C6H4(OH)2) on MgO(100) thin films on Ag(100) as a function of temperature and coverage, by means of x-ray photoemission spectroscopy (XPS) and temperature programmed desorption (TPD).