The Photochemistry of Amino Acids Produced on the Polar Cryovolcanic Regions of Titan

Gonçalves, Diogo; Hofmann, Florence; Wipf, Severin; Urso, Riccardo Giovanni; Bocková, Jana; Meinert, Cornelia; Rimmer, Paul Brandon; Stroscio, Gautam Dutta; Goldman, Nir; Elsaesser, Andreas; Pedras, Bruno; Martins, Zita

doi:10.1021/acsearthspacechem.4c00376

The Photochemistry of Amino Acids Produced on the Polar Cryovolcanic Regions of Titan

Journal Article · Sat Mar 08 00:00:00 EST 2025 · ACS Earth and Space Chemistry

DOI:https://doi.org/10.1021/acsearthspacechem.4c00376· OSTI ID:2527400

^[1]; Hofmann, Florence ^[2]; Wipf, Severin ^[2]; Urso, Riccardo Giovanni ^[3]; Bocková, Jana ^[4]; ^[4]; ^[5]; ^[6]; ^[7]; Elsaesser, Andreas ^[2]; Pedras, Bruno ^[1]; ^[1]

Universidade NOVA de Lisboa, Caparica (Portugal)
Freie Univ., Berlin (Germany)
Istituto Nazionale di Astrofisica (INAF), Catania (Italy)
Universite Cote d'Azur, Nice (France); Centre National de la Recherche Scientifique (CNRS) (France)
Univ. of Cambridge (United Kingdom). Cavendish Lab.
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States)

The cryovolcanic regions of Titan offer transient opportunities for prebiotic molecules to exist in water–ammonia solutions on the surface of the Saturnian moon. The upcoming NASA’s Dragonfly mission will search for high nitrogen concentrations and amino acids on Titan’s equatorial terrains. Cryovolcanic features, however, are most common on the polar regions. To mitigate the distance, bubble bursting may encapsulate the prebiotic molecules into aerosols, which Titan’s Hadley circulation would subsequently transport to the equator. Here we investigate whether alanine and glycine survive this meridional journey. Despite the unconstrained meridional wind velocities, our results suggest that the amino acids can survive the transport through the mesosphere. Dragonfly may find cryo-volcanogenic amino acids on Titan’s equator. Further, the interaction between the two amino acids increased 10-fold the photodegradation rate of glycine. We justify it based on changes in the environment polarity.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 2527400

Report Number(s):: LLNL--JRNL-2001591

Journal Information:: ACS Earth and Space Chemistry, Journal Name: ACS Earth and Space Chemistry Journal Issue: 3 Vol. 9; ISSN 2472-3452

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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The Photochemistry of Amino Acids Produced on the Polar Cryovolcanic Regions of Titan

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