Erlangen 2018 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 3: Photoelectron Spectroscopy

MO 3.4: Vortrag

Montag, 5. März 2018, 11:30–11:45, PA 2.150

Photoelectron spectroscopy of organic molecules in protic and aprotic solvents — •Evgenii Ikonnikov, Johan Hummert, Geert Reitsma, and Oleg Kornilov — Max Born Institute, Berlin, Germany

The environment of the molecules can cause changes in relaxation dynamics especially in protic solvents, where additional H bonds exist, which cannot be observed in vacuum. Here we use photoelectron spectroscopy in combination with a microliquid jet to study molecules in solution. The method allows us to measure binding energies, energies of excited states and lifetimes using a pump-probe technique. For these experiments we recently developed experimental beamline using HHG [1] to measure time-resolved photoelectron spectra of solvated molecules in water. In this report we present the first results for several solvents and solvated molecules using this technique. Specifically we extend our ex- periments to protic and non-protic solvents. In time-resolved experiments we use short XUV pulse (30 fs) as a probe pulse and visible 400 nm (30 fs) pulse as a pump-pulse. [1] M. Eckstein et al, Phys. Rev. Lett. 116, 163003 2016