Resonant two-photon ionization of chiral molecules

Anna Giardini-Guidoni; A. Latini; Mauro Satta; S. Piccirillo; T. M. Di Palma

doi:10.1117/12.378192

25 February 2000 Resonant two-photon ionization of chiral molecules

Anna Giardini-Guidoni, A. Latini, Mauro Satta, S. Piccirillo, T. M. Di Palma

Proceedings Volume 4070, ALT '99 International Conference on Advanced Laser Technologies; (2000) https://doi.org/10.1117/12.378192
Event: ALT'99 International Conference: Advanced Laser Technologies, 1999, Potenza-Lecce, Italy

Abstract

In the present investigation the properties and the structures of (R)-(+)-1-phenyl-1-propanol molecule (P_R), pure or clustered with chiral and non chiral molecules is reported. The studies have been accomplished in jet- cooled environment using mass selected R2PI excitation and ionization spectroscopy. It has been shown that this technique allows to study chiral molecules and to enantiodifferentiate the homo and heteroclusters. The different shift of the band origins of the molecular diasteroeomeric complexes relative to that of the bare P_R provides a means for spectroscopically discriminating the clusters. Measurements of threshold ionization and fragmentation spectra of the bare molecule and the clusters with chiral alcohols, n-butanol and H₂O allows to determine electronic ground state binding energy of these clusters and their ions. The analysis of the spectra, together with preliminary ab-initio calculations, gives information on the cluster structures. The calculations confirm that the difference in binding energy of these clusters depends on a balance between electrostatic and dispersive forces.

Citation Download Citation

Anna Giardini-Guidoni, A. Latini, Mauro Satta, S. Piccirillo, and T. M. Di Palma "Resonant two-photon ionization of chiral molecules", Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); https://doi.org/10.1117/12.378192

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