Inhalt des Dokuments
Dr. Ingo Zebger
- © P. Dahl
M.Sc. in Chemistry (Diplom-Chemiker)
M.Sc. in Science communication and marketing
|since 08/2003||Senior staff scientist,
Institute of Chemistry – PC 14, Technical University of Berlin,
Germany (Prof. P.Hildebrandt’s
Professor, Department of Physical Chemistry, University of Århus,
Denmark (Prof. P.R. Ogilby’s
fellowship, Department of Physical Chemistry, University of Essen,
Germany (Prof. H.W. Siesler’s group)|
Department of Mechanical and Chemical Engineering, Hochschule Krefeld
(Niederrhein University of Applied Sciences), Germany (Prof. N.
associate (PhD thesis), Department of Physical Chemistry, University
of Essen, Germany (Prof. H.W. Siesler’s
spectroscopic investigations are a powerful tool to carry out
structure/function studies in proteins.
Especially in spectral regions of multiple band overlaps, (IR) Difference spectroscopy is suitable to follow specific changes in the structure and orientation of the protein backbone, as well as, the prosthetic group(s) under various external perturbation, such as potential variations or the irradiation with light of specific wavelength. This is done relative to a reference state in the static or time-resolved regime.
By monitoring IR-difference bands of specific secondary structural element, we can follow the response of the protein backbone relative to electron transfer dynamics of the prosthetic group e.g. in heme proteins immobilized onto SAM-coated Au-surfaces. Complementary information about the latter are obtained by SERRS and Electrochemistry
Oxygen tolerant [NiFe]-hydrogenases of Ralstonia species are of potential for bio-technological energy storage and conversion.
IR-spectroscopy is applied in combination with EPR and UV/Vis, Resonance Raman spectroscopy to unravel/elucidate the underlying reaction mechanism and the structural reason for this oxygen tolerance in comparison with anaerobic standard hydrogenases and to carry out initial functional studies for hydrogenase-based bioelectronic devices.
In this context IR-spectroscopy monitors the catalytic process and allows to identify the involved redox states via the spectral pattern of the CO/CN--ligands attached to the catalytic center.
measurements in the bulk (Transmission or Attenuated Total Reflectance
Surface Enhanced Infrared Absorption Spectroscopy
Institut für Chemie
Raum PC 307
Straße des 17. Juni 135