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Rostock 2019 – scientific programme

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MO: Fachverband Molekülphysik

MO 18: Posters 2: Time Resolved Spectroscopy

MO 18.12: Poster

Wednesday, March 13, 2019, 16:15–18:15, S Foyer LLM

Excited State Dynamics of the Amino Acid Tryptophan — •Pascal Engl, Janina Lebendig-Kuhla, and Andrea Lübcke — Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Berlin

The amino acid tryptophan is known to be involved in ultra-fast processes like energy and electron transfers in proteins. We investigate the excited state dynamics of tryptophan in solution and its chromophore indole in the gas phase by utilizing pump-probe time-resolved photoelectron spectroscopy (TRPES). This method allows us to follow photoreactions in both energy and time by mapping the molecule’s excited state dynamics onto the continuum. As pump and probe pulses we use fs UV-laser pulses with wavelengths of 200   nm and 266   nm. For the measurements in aqueous solution we employ the liquid microjet technique. We will describe our experimental setup, present our results and discuss the effects of the environment on the excited state dynamics.

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