Journal article
X-ray absorption spectroscopy of the chiral molecules fenchone, alpha-pinene, limonene and carvone in the C1s excitation region



Publication Details
Authors:
Ozga, C.; Jänkälä, K.; Schmidt, P.; Hans, A.; Reiss, P.; Ehresmann, A.; Knie, A.
Publisher:
ELSEVIER SCIENCE BV
Publication year:
2016
Journal:
Journal of Electron Spectroscopy and Related Phenomena
Pages range:
34-37
Volume number:
207
Start page:
34
End page:
37
Number of pages:
4
ISSN:
0368-2048

Abstract
Relative ionization cross sections and fluorescence intensities as functions of the exciting-photon energy were recorded for the chiral molecules carvone, alpha-pinene, limonene and fenchone after excitation by monochromatized synchrotron radiation with energies of the exciting-photons between 284 eV and 289 eV. At selected exciting-photon energies dispersed fragment fluorescence spectra in the wavelength range between 365 nm and 505 nm were obtained. Time dependent density functional theory (TD-DFT) computations were performed to analyze the experimentally observed resonance-structures. Comparison of the computed and recorded spectra demonstrates the possibility of a predominant or even specific excitation of one particular stereocenter site in a molecule with more than one stereocenter. (C) 2015 Elsevier B.V. All rights reserved.


Keywords
Absorption, Chirality, Fluorescence spectroscopy, Synchrotron radiation, TD-DFT

Last updated on 2019-25-07 at 18:47