Trends in the Carbonyl Core (C 1S, O 1S) → π*C=O Transition in the Near-Edge X-ray Absorption Fine Structure Spectra of Organic Molecules

By A. Urquhart, H. Ade. 2002

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The origin of organic matter in the solar system: Evidence from the interplanetary dust particles (2003, background): “The 288.5 eV absorption feature detected by C-XANES and the 532 eV absorption feature detected by O-XANES are both consistent with carbonyl (Urquhart and Ade, 2002), but could be due to carboxyl as well.”
Titanium Carbide Derived Nanoporous Carbon for Energy-Related Applications (2006, background): “position of the π*C=O-related peak depends on the specific environment of the carbon atoms in the double bonds (see, for example, [20]).”
X-ray absorption near-edge structure (XANES) spectroscopy (2014, methodology): “Currently, the C K-edge is widely utilized for discriminating the nature of carbon compounds in soils (Jokic et al. 2003; Solomon et al. 2005, 2012), amino acids (Kaznacheyev et al. 2002), and carbonyl compounds (Urquhart and Ade 2002).”
Quantitative organic and light‐element analysis of comet 81P/Wild 2 particles using C‐, N‐, and O‐μ‐XANES (2008, background): “Carbon substitution with more electronegative atoms, e.g., N and O, results in shifts to higher excitation energies, e.g., 288.5 eV in the case of carboxyl 1s-π* transitions (Urquhart and Ade 2002).”