Erlangen 2018 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 5: X-Ray and XUV Spectroscopy (joint session MO/A)
MO 5.3: Vortrag
Montag, 5. März 2018, 14:45–15:00, PA 2.150
Hydrogen bond dissociation dynamics of indole-water clusters — •Melby Johny1, Thomas Kierspel1,2, Joss Wiese1,2, Jolijn Onvlee1, Helen Bieker1,2, Terry Mullins1,2, Andrea Trabattoni1, Ruth Livingstone1,2, Sebastian Trippel1,2, Jochen Küpper1,2,3, and and others1,2,3 — 1Center for Free Electron Laser Science (CFEL), Deutsches Elektronen Synchrotron (DESY), Hamburg, Germany — 2The Hamburg Center for Ultrafast Imaging, University of Hamburg, Germany — 3Department of Physics, University of Hamburg, Germany
The properties of atoms and molecules are strongly dependent on their local environment and hydrogen bonds are of universal importance in chemistry and biochemistry. Therefore, it is highly desirable to bridge the gap between single, isolated molecules and molecules in solvation. Photophysics of microsolvated indole is significantly relevant being strongest UV chromophore of tryptohan as well as the structure of singly hydrogen bonded indole-water cluster is known [1].
Here, we show our recent experiment performed at LCLS at SLAC for the investigation of hydrogen bond breaking dynamics of indole-water clusters via UV-pump (266 nm) and x-ray probe (2.5 nm) photo-electron-photoion-photoion-coincidence (PEPIPICO) imaging. Our preliminary analysis shows timedependent dissociation channels with distinguishable velocities for hydronium ions detected in coincidence with the photo-fragments of indole.
[1] Korter, Pratt, Küpper, J. Phys. Chem. A 1998, 102, 7211-7216