Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 191, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2021.109847
Keywords
Astrochemistry; Polycyclic aromatic hydrocarbons; X-ray irradiation; Low temperatures; Matrix isolation; FTIR spectroscopy
Funding
- Russian Scientific Foundation [21-13-00195]
- Russian Science Foundation [21-13-00195] Funding Source: Russian Science Foundation
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Researchers directly observed the radiation-induced assembling of the naphthalene molecule in an experiment involving X-ray irradiation of the isolated styrene-acetylene complex in a solid krypton matrix at 6K using FTIR spectroscopy. The presence of naphthalene radical cation in the observation suggests a cationic pathway in this reaction, leading to a potential new mechanism for the formation of polycyclic aromatic hydrocarbons in astrochemical ices.
The radiation-induced assembling of the naphthalene molecule was first directly observed under X-ray irradiation of the isolated styrene-acetylene complex in a solid krypton matrix at 6 K using FTIR spectroscopy. The observation of naphthalene radical cation in the presence of electron scavenger suggests a cationic pathway of this reaction. This finding makes it possible to propose a new mechanism for the formation of polycyclic aromatic hydrocarbons in astrochemical ices.
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