Publication details

RADIKÁLOVÁ SYNTÉZA NUKLEOVÝCH BÁZÍ Z FORMAMIDU V IMPAKTNÍM PLAZMATU

Title in English RADICAL SYNTHESIS OF NUCLEIC ACID BASES FROM FORMAMIDE IN IMPACT PLASMA
Authors

FERUS Martin KNÍŽEK Antonín ŠPONER Jiří ŠPONEROVÁ Judit CIVIŠ Svatopluk

Year of publication 2015
Type Article in Periodical
Magazine / Source CHEMICKÉ LISTY
MU Faculty or unit

Central European Institute of Technology

Citation
Web http://www.chemicke-listy.cz/docs/full/2015_06_406-414.pdf
Field Physical chemistry and theoretical chemistry
Keywords formamide; laser-induced dielectric breakdown; nucleobases; origin of life
Description The end of the late heavy bombardment era coincides with the emergence of life on the Earth 4 billion years ago. This coincidence suggests that the impacts of extraterrestrial bodies might have contributed to the formation of the first molecules involved in early living structures. We have simulated a high-energy synthesis of nucleic acid bases from formamide in the impact of an extraterrestrial body. The high-power laser system PALS was employed in simulation of impact plasma by inducing a laser dielectric breakdown in formamide. In hot and dense plasma, formamide decomposed producing reactive radicals. The radicals reacted with formamide and nucleic acid bases were produced. Formamide was pretreated with laser plasma in the presence of catalysts. The products were analyzed by FTIR spectrometry and GC-MS. Time-resolved emission spectra of formamide discharge plasma were measured. Kinetic models and formation pathways for nucleic acid bases were calculated. The results show that the nucleic acid bases can be synthesized in impact plasma involving CN and NH radicals and formamide.