Research Group Prof. Dr. G. Friedrichs

Reaction Kinetics & Laser Spectroscopy

Current research projects of the research group Friedrichs are in the field of environmental interface chemistry, combustion chemistry, and the development of quantitative laser based detection methods.

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Laser spectroscopic techniques such as surface sensitive VSFG as well as ultrasensitive NIR/IR cw/ew/sat- CRDS spectroscopy are applied with a focus on the marine system. For example, VSFG is used to investigate the composition, structure, and reactivity of the organic nanolayer, which is prevalent at natural water-air interfaces, as well as to perform systematic studies on monolayer oxidation and photochemistry. Other optical lab-based and field-deployable sensors are developed for sensitive, isotope selective detection of trace gases using high resolution absorption spectroscopy based on long-path, cavity enhanced, and modulation detection schemes.

For example, selective-saturation-CRDS is currently advanced as a method to overcome cross-sensitivity issues that are inherent for all absorption based methods. Other projects are related to high temperature kinetics of combustion relevant reactions and are performed by time-resolved UV laser absorption and frequency modulation spectroscopy (FMS) in a photolysis shock tube setup. Present investigations are concerned with elementary reactions of key species for modeling NOx formation in hydrocarbon flames. Moreover, a mid-IR-FM spectrometer is currently implemented that will also allow us to detect reactive species in particle forming environments such as dusty plasmas to better constrain reactive gas phase - surface interactions.The experimental work is complemented by theoretical analyses based on quantum-chemical methods and molecular dynamics simulations.  

Prof. Dr. Gernot Friedrichs
Institute of Physical Chemestry
Kiel University
Max-Eyth-Str. 1 (Room 006)
D-24118 Kiel                                                          
Germany

phone: + 49 (0) 431 880 7742
FAX: + 49 (0) 431 880 7743<br />
e-mail: friedrichs@phc.uni-kiel.de

 

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