Metallofullerene and fullerene formation from condensing carbon gas under conditions of stellar outflows and implication to stardust
| Autor: | Christopher P. Ewels, Jean Joseph Adjizian, Harold W. Kroto, Gregory T. Blakney, Paul W. Dunk, Nathan K. Kaiser, Alan G. Marshall, John P. Quinn |
|---|---|
| Přispěvatelé: | Department of Chemistry and Biochemistry, Tallahassee (DCB), Florida State University [Tallahassee] (FSU), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN) |
| Rok vydání: | 2013 |
| Předmět: |
Astrochemistry
Fullerene Astrophysics::High Energy Astrophysical Phenomena chemistry.chemical_element Astrophysics::Cosmology and Extragalactic Astrophysics 010402 general chemistry 01 natural sciences 7. Clean energy Mass Spectrometry Astrobiology chemistry.chemical_compound Stars Celestial Nucleosynthesis 0103 physical sciences Organometallic Compounds Physics::Atomic and Molecular Clusters Astrophysics::Solar and Stellar Astrophysics Polycyclic Aromatic Hydrocarbons Ejecta 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Multidisciplinary Fourier Analysis Presolar grains Carbon 0104 chemical sciences Models Chemical chemistry Meteorite 13. Climate action Physical Sciences Metallofullerene [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Fullerenes Astrophysics::Earth and Planetary Astrophysics |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2013, 110 (45), pp.18081. ⟨10.1073/pnas.1315928110⟩ |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.1315928110 |
| Popis: | International audience; Carbonaceous presolar grains of supernovae origin have long been isolated and are determined to be the carrier of anomalous (22)Ne in ancient meteorites. That exotic (22)Ne is, in fact, the decay isotope of relatively short-lived (22)Na formed by explosive nucleosynthesis, and therefore, a selective and rapid Na physical trapping mechanism must take place during carbon condensation in supernova ejecta. Elucidation of the processes that trap Na and produce large carbon molecules should yield insight into carbon stardust enrichment and formation. Herein, we demonstrate that Na effectively nucleates formation of Na@C60 and other metallofullerenes during carbon condensation under highly energetic conditions in oxygen- and hydrogen-rich environments. Thus, fundamental carbon chemistry that leads to trapping of Na is revealed, and should be directly applicable to gas-phase chemistry involving stellar environments, such as supernova ejecta. The results indicate that, in addition to empty fullerenes, metallofullerenes should be constituents of stellar/circumstellar and interstellar space. In addition, gas-phase reactions of fullerenes with polycyclic aromatic hydrocarbons are investigated to probe "build-up" and formation of carbon stardust, and provide insight into fullerene astrochemistry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|