Author/Authors :
Schِll، نويسنده , , A and Hübner، نويسنده , , D and Schmidt، نويسنده , , Th and Urquhart، نويسنده , , S.G and Fink، نويسنده , , R and Umbach، نويسنده , , E، نويسنده ,
Abstract :
We present a high-resolution C K- and O K-NEXAFS study for the large aromatic molecule acenaphthenequinone (ANQ) in the condensed phase. This is the largest molecule for which a distinct vibronic fine structure at the O K-edge has been resolved so far. The most prominent results are the appearance of only one predominant vibrational mode, a C–H stretching mode, in the O 1s NEXAFS spectra and the analysis of the anharmonicity of the excited state potential.
