TiO2-catalyzed synthesis of sugars from formaldehyde in extraterrestrial impacts on the early Earth

Varování

Publikace nespadá pod Filozofickou fakultu, ale pod Středoevropský technologický institut. Oficiální stránka publikace je na webu muni.cz.

Autoři	CIVIŠ Svatopluk SZABLA Rafal Kazimierz SZYJA Bartłomiej M. SMYKOWSKI Daniel IVANEK Ondřej KNÍŽEK Antonín KUBELÍK Petr ŠPONER Jiří FERUS Martin ŠPONEROVÁ Judit
Rok publikování	2016
Druh	Článek v odborném periodiku
Časopis / Zdroj	Scientific Reports
Fakulta / Pracoviště MU	Středoevropský technologický institut
Citace
www	http://www.nature.com/articles/srep23199
Doi	http://dx.doi.org/10.1038/srep23199
Obor	Fyzikální chemie a teoretická chemie
Klíčová slova	HIGH-ENERGY CHEMISTRY; CARBONACEOUS METEORITES; CHEMICAL-COMPOSITION; PREBIOTIC CONDITIONS; NUCLEOBASE FORMATION; MECHANISM; FORMAMIDE; GLYCOLALDEHYDE; COMETARY; SURFACE
Popis	Recent synthetic efforts aimed at reconstructing the beginning of life on our planet point at the plausibility of scenarios fueled by extraterrestrial energy sources. In the current work we show that beyond nucleobases the sugar components of the first informational polymers can be synthesized in this way. We demonstrate that a laser-induced high-energy chemistry combined with TiO2 catalysis readily produces a mixture of pentoses, among them ribose, arabinose and xylose. This chemistry might be highly relevant to the Late Heavy Bombardment period of Earth's history about 4-3.85 billion years ago. In addition, we present an in-depth theoretical analysis of the most challenging step of the reaction pathway, i.e., the TiO2-catalyzed dimerization of formaldehyde leading to glycolaldehyde.
Související projekty:	CEITEC 2020