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NTH – School for Contacts in Nanosystems
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NTH – School for Contacts in Nanosystems
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25. Juni 2010 - NTH Colloquium - Prof. Dr. Dr. H.c. Klaus Wandelt

Organic monolayers at metal/electrolyte interfaces – Structure and reactivity

Prof. Dr. Dr. h.c. Klaus Wandelt

Institut für Physikalische und Theoretische Chemie
Universität Bonn

Freitag, 25. Juni 2010, 15:30 Uhr

Institut für Energieforschung und Physikalische Technologien
TU Clausthal


The symbiosis between organic chemistry and surface physics is a promising route in modern material science. Organic chemists are able to synthesize almost any kind of molecules desired. Surface physicists have a plethora of high resolution microscopic and spectroscopic methods at their disposal. Thus, the adsorption of organic molecules and layers enables the characterization of their physical and chemical properties with unprecedented precision. This, in turn, provides the basis for a rational design of low-dimensional functional materials. Thermally unstable organic molecules which are not intact volatile may be deposited from solution. The present lecture concentrates on the electrochemical deposition of two classes of molecules, porphyrins and viologens, on anion-modified copper single crystal electrodes. Mainly electrochemical scanning tunneling microscopy (EC-STM), but also electrochemical and optical methods are used to study the structure and reactivity of their adsorbed layers in situ.