Sprecher
Yuichiro Ueno
(Science Tokyo, ELSI (Earth-Life Science Institute))
Beschreibung
Photochemistry is important for prebiotic synthesis on early Earth and early Mars. Formaldehyde (HCHO) has been known to be produced via CO by the UV chemistry of CO2 atmosphere, though the HCHO is not an only product. Our systematic experiments demonstrated that various organic compounds (aldehydes, sugars, sugar acids, hydroxy acids, keto acids, dicarboxylic acids and fatty acids) are produced by solar-like UV irradiation to CO and H2O without no obvious catalyst. Furthermore, the product mixture reacts with ammonia to form amino acids, imidazole and its derivatives. The bottleneck to yield various types of the molecues is three aldehydes (HCHO, (CHO)2, and CH3CHO: Troika) produced from CO in gas phase reaction.
