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Title: | High-Energy Proton-Beam-Induced Polymerization/Oxygenation of Hydroxynaphthalenes on Meteorites and Nitrogen Transfer from Urea: Modeling Insoluble Organic Matter? | Authors: | Bizzarri, Bruno Mattia Manini, Paola Lino, Valeria d'Ischia, Marco Kapralov, Michail Krasavin, Eugene Mráziková, Klaudia Šponer, Jiří Šponer, Judit E. Di Mauro, Ernesto Saladino, Raffaele |
Journal: | CHEMISTRY-A EUROPEAN JOURNAL | Issue Date: | 2020 | Abstract: | Formation and structural modification of oxygenated polycyclic aromatic hydrocarbons (oxyPAHs) by UV irradiation on minerals have recently been proposed as a possible channel of PAH transformation in astrochemical and prebiotic scenarios of possible relevance for the origin of life. Herein, it is demonstrated that high-energy proton-beam irradiation in the presence of various meteorites, including stony iron, achondrite, and chondrite types, promotes the conversion of two representative oxyPAH compounds, 1-naphthol and 1,8-dihydroxynaphthalene, to complex mixtures of oxygenated and oligomeric derivatives. The main identified products include polyhydroxy derivatives, isomeric dimers encompassing benzofuran and benzopyran scaffolds, and, notably, a range of quinones and perylene derivatives. Addition of urea, a prebiotically relevant chemical precursor, expanded the range of identified species to include, among others, quinone diimines. Proton-beam irradiation of oxyPAH modulated by nitrogen-containing compounds such as urea is proposed as a possible contributory mechanism for the formation and processing of insoluble organic matter in meteorites and in prebiotic processes. |
URI: | http://hdl.handle.net/2067/46179 | ISSN: | 0947-6539 | DOI: | 10.1002/chem.202002318 | Rights: | Attribution-NonCommercial-NoDerivs 3.0 United States |
Appears in Collections: | A1. Articolo in rivista |
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