Mainz 2026 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 11: Poster – Chirality

MO 11.2: Poster

Dienstag, 3. März 2026, 17:00–19:00, Philo 1. OG

Towards the measurement of Photoelectron Circular Dichroism of (M)-[4] triangulane — •Tonio Rosen, Nicolas Ladda, Fabian Westmeier, Simon Ranecky, Sagnik Das, Sudheendran Vasudevan, Krishna Kant Singh, Hendrike Braun, Arne Senftleben, Jochen Mikosch, and Thomas Baumert — Universität Kassel

[n] Triangulanes are helically chiral molecules with structural helicity, providing a chiral scattering potential for electrons upon photoionization and a helical electron distribution in their highest occupied molecular orbital. Hence, these molecules are promising for investigating photoelectron circular dichroism (PECD) after resonance-enhanced multiphoton ionization in the gas phase. PECD is defined as a forward-backward asymmetry in photoelectron distribution with respect to the laser propagation direction in chiral molecules ionized with circularly polarized light. Using a velocity map imaging spectrometer, we aim to investigate the PECD of the smallest chiral triangulane, the [4] triangulane, in the 200- to 800 nm range. To this end, we want to employ gas chromatography, separating the enantiomers of a racemic mixture before their introduction into the experimental chamber. In this contribution, we will present the recent progress of this project.

Keywords: PECD; GC-VMI; REMPI