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Updated: Jan 12, 2026
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Excited State Assignment and State-Resolved Photoelectron Circular Dichroism in Chalcogen-Substituted Fenchones
Sudheendran Vasudevan1, Steffen M Giesen2, Simon T Ranecky1
1Institut für Physik and CINSaT, Universität Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany.
Abstract:
Excited electronic states of fenchone, thiofenchone, and selenofenchone are characterized and assigned with different gas-phase spectroscopic methods and ab initio quantum chemical calculations. With an increasing atomic number of the chalcogen, increasing bathochromic (red) shifts are observed, which vary in strength for Rydberg states, valence-excited states, and ionization energies. The spectroscopic insight is used to state-resolve the contributions in multiphoton photoelectron circular dichroism with femtosecond laser pulses. This is shown to be a sensitive observable of molecular chirality in all studied chalcogenofenchones. This work contributes new spectroscopic information, particularly on thiofenchone and selenofenchone. It may open a perspective for future coherent control experiments exploiting resonances in the visible and near-ultraviolet spectral regions.
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