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MO: Fachverband Molekülphysik
MO 20: Poster – Molecular Spectroscopy and Dynamics
MO 20.10: Poster
Wednesday, March 12, 2025, 17:00–19:00, Tent
Toward understanding ultrafast dynamics of uracil and uraci-water clusters — •Aditi Pradhan1,2, Ivo S. Vinklárek1, Hubertus Bromberger1, Sebastian Trippel1,3, and Jochen Küpper1,2,3 — 1Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 2Department of Chemistry, Universität Hamburg, Germany — 3The Hamburg Center for Ultrafast Imaging (CUI), Universität Hamburg, Germany
The solute-solvent interactions in biomolecule-water clusters remain underexplored at ultrafast timescales with atomic scale precision. Studying solvated clusters at the same level of detail as single isolated molecules is a significant challenge. We propose a bottom-up approach to tackle this. The versatile transportable endstation for controlled molecule (eCOMO) [1] employs the electrostatic deflector in combination with velocity map imaging to study clusters in a size-selected fashion [2]. Examining systems with multiple water molecules attached to the building blocks of life, we aim to advance the understanding of ubiquitous interactions like hydrogen bonding. Preliminary experiments on uracil-water clusters reveal interesting dynamics following strong-field ionization. Further UV-photoinduced dynamics of these important model systems will be studied using short-pulse laser sources as well as short-wavelength facilities.
[1] Jin et int. (8 authors), Küpper, arXiv:2406.16491 [physics]
[2] Chang et int. (2 authors), Küpper, Int. Rev. Phys. Chem., 34, 1077838 (2015) arXiv:1505.05632 [physics]
Keywords: molecular dynamics; clusters; ultrafast imaging