Soft X-ray emission spectroscopy of polycyclic aromatic hydrocarbons

High-resolution C K X-ray emission spectra of polycyclic aromatic hydrocarbons (PAH) were measured using synchrotron radiation. The main peak energies in the PAH X-ray spectra shifted to a higher energy region as the ratio of hydrogenated outer carbon atoms to the non-hydrogenated inner carbon atoms...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 2004-07, Vol.137, p.823-826
Main Authors: Muramatsu, Yasuji, Tomizawa, Kana, Denlinger, Jonathan D, Perera, Rupert C.C
Format: Article
Language:English
Subjects:
Carbon
Polycyclic aromatic hydrocarbons
Soft X-rays
Synchrotron radiation
X-ray emission
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Summary:High-resolution C K X-ray emission spectra of polycyclic aromatic hydrocarbons (PAH) were measured using synchrotron radiation. The main peak energies in the PAH X-ray spectra shifted to a higher energy region as the ratio of hydrogenated outer carbon atoms to the non-hydrogenated inner carbon atoms increased. Discrete variational (DV)-Xα molecular orbital calculations provided theoretical confirmation that the spectral features depend on the ratio of hydrogenated/non-hydrogenated carbon atoms, which suggests that the features around the main peaks provide the information of the degree of hydrogenation in PAH compounds.
ISSN:0368-2048
1873-2526
DOI:10.1016/j.elspec.2004.02.006