SAMOP 2023 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 6: Poster I

MO 6.6: Poster

Dienstag, 7. März 2023, 16:30–19:00, Empore Lichthof

Dependence of photoelectron circular dichroism on the distance between marker atom and stereocenter in chiral molecules — •Emilia Heikura¹, Florian Trinter², Lutz Marder¹, Catmarna Küstner-Wetekam¹, Dana Bloß¹, Nils Kiefer¹, Johannes Viehmann¹, Christina Zindel¹, Markus Ilchen², Andreas Hans¹, and Arno Ehresmann¹ — ¹Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany — ²Deutsches Elektronen-Synchrotron, DESY, Notkestraße 85, 22607 Hamburg, Germany

Photoelectron circular dichroism (PECD) is one of the most powerful methods to investigate molecular chirality in the gas phase. PECD arises from the asymmetry of the angular distribution of photoelectrons (probe electrons) scattered on the chiral backbone of the molecule even from randomly oriented molecules after interaction with circularly polarized light. One still unclear aspect of PECD is, how the distance between the probe electron emitter site and the center of a point-chiral molecule affects the magnitude of the PECD asymmetry. For detection of these forward-backward asymmetries of emitted photoelectrons a velocity map imaging (VMI) electron spectrometer was used. Measurements were performed on sec-butyl trimethylsilylether and its derivatives.