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Full-Text Articles in Physical Sciences and Mathematics
Radiolysis Of Solid-State Nitrogen Heterocycles Provides Clues To Their Abundance In The Early Solar System, Phillip G. Hammer, Ruiqin Yi, Isao Yoda, H. James Cleaves, Michael P. Callahan
Radiolysis Of Solid-State Nitrogen Heterocycles Provides Clues To Their Abundance In The Early Solar System, Phillip G. Hammer, Ruiqin Yi, Isao Yoda, H. James Cleaves, Michael P. Callahan
Chemistry and Biochemistry Faculty Publications and Presentations
We studied the radiolysis of a wide variety of N-heterocycles, including many of biological importance, and find that the majority are remarkably stable in the solid-state when subjected to large doses of ionizing gamma radiation from a 60Co source. Degradation of N-heterocycles as a function of dose rate and total dose was measured using high performance liquid chromatography with UV detection. Many N-heterocycles show little degradation when γ-irradiated up to a total dose of ~1 MGy, which approximates hundreds of millions of years’ worth of radiation emitted in meteorite parent bodies due to slow radionuclide decay. Extrapolation of …