Enantioselective femtosecond laser photoionization spectrometry of limonene using photoelectron circular dichroism

Limonene is ionized by circularly polarized 420 nm femtosecond laser pulses. Ion mass and photoelectron energy spectra identify the dominant (2 + 1) multiphoton ionization mechanism, aided by TDDFT calculations of the Rydberg excitations. Photoelectron circular dichroism measurements on pure enantio...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2015-04, Vol.17 (14), p.8614-8617
Main Authors: Rafiee Fanood, Mohammad M, Janssen, Maurice H. M, Powis, Ivan
Format: Article
Language:English
Subjects:
Asymmetry
Circular Dichroism
Circularity
Cyclohexenes - chemistry
Dichroism
Excitation spectra
Femtosecond
Lasers
Photoelectrons
Photons
Spectrometry
Spectrophotometry
Stereoisomerism
Terpenes - chemistry
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Summary:Limonene is ionized by circularly polarized 420 nm femtosecond laser pulses. Ion mass and photoelectron energy spectra identify the dominant (2 + 1) multiphoton ionization mechanism, aided by TDDFT calculations of the Rydberg excitations. Photoelectron circular dichroism measurements on pure enantiomers reveal a chiral asymmetry of ±4 %. Circularly polarized, femtosecond laser multiphoton ionization can clearly distinguish between the enantiomers of limonene from a 4% chiral asymmetry in the photoelectron angular distribution.
ISSN:1463-9076
1463-9084
DOI:10.1039/c5cp00583c