Düsseldorf 2007 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 56: Poster: Femtosecond Spectroscopy
MO 56.11: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster A
Ultrafast IR-Spectroscopy on Flavin Systems — •Matthias Wolf1, Ruth Groß1, Christian Schumann1, Rolf Diller1, Britta Person2, and Joachim Heberle2 — 1Fachbereich Physik, TU Kaiserslautern, D-67663 Kaiserslautern — 2Fakultät für Chemie, Universität Bielefeld, D-33615 Bielefeld
The function of biological blue light receptors is based on the photochemistry of the diverse flavin chromophores in the respective protein environment.
Riboflavin and flavin-adenine-dinucleotide (FAD) in solution (DMSO) were studied by sub-picosecond time resolved infrared spectroscopy. The decay of the excited electronic state on the nanosecond timescale is preceeded by vibrational cooling within a few picoseconds. These dynamics allow the identification of S1 vibrational states as well as their spectral position.
In addition we present and discuss first measurements on the flavin mononucleotide binding LOV1 domain of the Phot1 protein from the green algae Chlamydomonas reinhardtii.