期刊
SCIENTIFIC REPORTS
卷 6, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/srep35605
关键词
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资金
- TUBITAK-2219 Abroad Post-Doctoral Research Funding Programme [1059B191301289]
- Belgian Fund for Scientific Research (FRS-FNRS) under FRFC [2.4577.11]
- Vienna Scientific Cluster
- Austrian Science Fund (FWF) [P 28322-N36, M 1497-N19]
- Greek General Secretariat for Research and Technology
- European Commission through the European Fund for Regional Development
- NSRF action Development of Research Centers - KPHPiISigma (POLYNANO)
- European Commission under contract CALIPSO Transnational Access
- Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH
- Canada Foundation for Innovation
- Natural Sciences and Engineering Research Council of Canada
- National Research Council Canada
- Canadian Institutes of Health Research
- Government of Saskatchewan
- Western Economic Diversification Canada
- University of Saskatchewan
- Director of the Office of Science, Department of Energy [DE-AC02-05CH11231]
- [642742]
- [612577]
- [226716]
- [312284]
- Austrian Science Fund (FWF) [P28322] Funding Source: Austrian Science Fund (FWF)
C-60 fullerene crystals may serve as important catalysts for interstellar organic chemistry. To explore this possibility, the electronic structures of free-standing powders of C-60 and (C59N)(2) azafullerenes are characterized using X-ray microscopy with near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy, closely coupled with density functional theory (DFT) calculations. This is supported with X-ray photoelectron spectroscopy (XPS) measurements and associated core-level shift DFT calculations. We compare the oxygen 1s spectra from oxygen impurities in C-60 and C59N, and calculate a range of possible oxidized and hydroxylated structures and associated formation barriers. These results allow us to propose a model for the oxygen present in these samples, notably the importance of water surface adsorption and possible ice formation. Water adsorption on C-60 crystal surfaces may prove important for astrobiological studies of interstellar amino acid formation.
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