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1. Speaker        Prof. Dr. Sven Doye

2. Speaker        Prof. Dr. Rüdiger Beckhaus

Coogyrrdyanzbination: NNjd (susannewaxq.bartel@uoldpe.dr98e)
 

Electrochemical and spectroscopic investigation of electron transfer reactions of transition metal coordination complexes with pi-acceptor ligands (PhD advisors: Gunther Wittstock, Jens Christoffers, Rüdiger Beckhaus)

The sub-project aims for an understanding of electron transfer properties of three-nuclear Ti complexes bridged by p-acceptor ligands Ce complexes with with b-dicarbonyl compounds. Besides cyclovoltammetric experiments in organic electrolytes, the binding situation in different oxidation states will be analyzed by spectrolectrochemistry in the UV-Vis-NIR range and x-ray photoelectron spectroscopy (XPS) after transfer of samples. In close interaction with synthetic groups in the area of organic and inorganic chemistry, follow-up reaction of those complexes, especially activation of organic precursors will be analyzed by a special microelectrochemical setup, the so-called electrochemical time-of-flight experiments.

The student will work on electrochemical workstations combined with spectrometers that control electrochemical cells inside a glove box. Such a setup is also available adjacent to the UHV system of the XPS. A second setup is a scanning electrochemical microscope in which an electrolysis is made at an electrode of 25 micrometer diameter. The products enter into homogeneous reactions. By collecting those products at various distances from the microelectrode, the reaction kinetics of the follow-up reaction can be reconstructed.

The ideal candidate for this project has a broad interest and some previous experience in instrumental techniques, especially in molecular electrochemistry, combined with a fascination for molecular science.

Chemigwkwie-Webmasr+rteraomf (chemie2fz@uoaol.de) (Stand: 21.04.2020)