Fluorine-Rich Planetary Environments as Possible Habitats for Life
AbstractIn polar aprotic organic solvents, fluorine might be an element of choice for life that uses selected fluorinated building blocks as monomers of choice for self-assembling of its catalytic polymers. Organofluorine compounds are extremely rare in the chemistry of life as we know it. Biomolecules, when fluorinated such as peptides or proteins, exhibit a “fluorous effect”, i.e., they are fluorophilic (neither hydrophilic nor lipophilic). Such polymers, capable of creating self-sorting assemblies, resist denaturation by organic solvents by exclusion of fluorocarbon side chains from the organic phase. Fluorous cores consist of a compact interior, which is shielded from the surrounding solvent. Thus, we can anticipate that fluorine-containing “teflon”-like or “non-sticking” building blocks might be monomers of choice for the synthesis of organized polymeric structures in fluorine-rich planetary environments. Although no fluorine-rich planetary environment is known, theoretical considerations might help us to define chemistries that might support life in such environments. For example, one scenario is that all molecular oxygen may be used up by oxidation reactions on a planetary surface and fluorine gas could be released from F-rich magma later in the history of a planetary body to result in a fluorine-rich planetary environment.
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Budisa, N.; Kubyshkin, V.; Schulze-Makuch, D. Fluorine-Rich Planetary Environments as Possible Habitats for Life. Life 2014, 4, 374-385.
Budisa N, Kubyshkin V, Schulze-Makuch D. Fluorine-Rich Planetary Environments as Possible Habitats for Life. Life. 2014; 4(3):374-385.Chicago/Turabian Style
Budisa, Nediljko; Kubyshkin, Vladimir; Schulze-Makuch, Dirk. 2014. "Fluorine-Rich Planetary Environments as Possible Habitats for Life." Life 4, no. 3: 374-385.