Mainz 2026 – scientific programme

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MO: Fachverband Molekülphysik

MO 9: Chirality II

MO 9.2: Talk

Tuesday, March 3, 2026, 11:30–11:45, P 110

Photoelectron Circular Dichroism in the Photodetachment of Deprotonated 1-Phenylethanol — •Viktoria Katharina Brandt, André Fielicke, Gerard Meijer, and Mallory Lee Green — Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany

Photoelectron Circular Dichroism (PECD) is a chiroptical effect revealed in the angle-dependent photoemission of an electron from a chiral molecule, upon irradiation by circularly polarized light. PECD can provide insight into our understanding of electron dynamics, as this effect is acutely sensitive to the state of the molecule and the emission conditions of the electron. PECD within the photodetachment of anions has historically been understudied. Past studies of PECD in the photodetachment of anions have reported PECD effects averaged across multiple overlapping electron detachment channels represented by energetically similar tautomers, conformers, and electronic states. In such cases, the sensitivity of PECD to electron dynamics is a double-edged sword: PECD studies can only offer a wealth of information if one can disentangle the individual contributions to the overall measured PECD. Within this study, we measure the PECD effect in the photodetachment of a single electronic state of a single conformer of deprotonated 1-phenylethanol anion to explore the explicit effects of electron kinetic energy and vibrational state on the chiroptical effect within this photoemission regime.

Keywords: Photoelectron Circular Dichroism (PECD); Anion Photoelectron Spectroscopy; Anion Photoelectron Circular Dichroism (PECD); Electron Dynamics