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Lecture Th. Wandlowski


01 July 2011 FWN-Building 5118.-152, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. Th. Wandlowski
Affiliation: University of Berne, Department of Chemistry and Biochemistry, Switzerland
Title: (Electro) chemical tuning of charge transport with single molecules and nanocrystals
Date: Fri Jul 1, 2011
Start: 11.00
Location: FWN-Building 5118.-152
Host: Kees Hummelen
Telephone: +31 50 363 5553


In this talk we will focus on single molecule conductance studies in Au│molecule (cluster)│Au junctions based on a STM configuration [3] in solution as well as under electrochemical conditions. We will discuss results with α,ω-substituted biphenyls with specific focus on the role of the terminal anchoring groups and the torsion angle between the two planar phenyl rings [4]. The concept of redox-mediated gating in symmetric and asymmetric molecular junctions will be illustrated in a case study with perylene tetracarboxylic bisimide derivatives [5]. The experimental data will be compared with simulations based on the phenomenological theory of electron transfer and quantum chemical up-initio calculations [3,6]. Finally, we will compare these single redox-molecule mediated transport experiments with multi-level gating studies employing immobilized

nanocrystal hybrid assemblies [7,8]. The talk will conclude with a perspective outlook.


Last modified:22 October 2012 2.31 p.m.