Amino acid gas phase circular dichroism and implications for the origin of biomolecular asymmetry

Autor: Cornelia Meinert, Adrien D. Garcia, Jérémie Topin, Nykola C. Jones, Mira Diekmann, Robert Berger, Laurent Nahon, Søren V. Hoffmann, Uwe J. Meierhenrich

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)

Chiroptical properties of amino acids are challenging to investigate in the gas phase due to the low vapor pressure of these molecules. Here the authors succeed in measuring circular dichroism active transitions and anisotropies in the ultraviolet ra

Externí odkaz: https://doaj.org/article/2dcdf39bf0444112a526e501556bde04

Processing of methane and acetylene ices by galactic cosmic rays and implications to the color diversity of Kuiper Belt objects

Autor: Chaojiang Zhang, Cheng Zhu, Andrew M. Turner, Ivan O. Antonov, Adrien D. Garcia, Cornelia Meinert, Leslie A. Young, David C. Jewitt, Ralf I. Kaiser

Publikováno v: Science Advances
Science Advances, 2023, 9 (22), pp.eadg6936. ⟨10.1126/sciadv.adg6936⟩

Kuiper Belt objects exhibit a wider color range than any other solar system population. The origin of this color diversity is unknown, but likely the result of the prolonged irradiation of organic materials by galactic cosmic rays (GCRs). Here, we co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8f6ec9e7f061d78c653cd00c31f888d
https://hal.science/hal-04112774

Resolution, quantification, and reliable determination of enantiomeric excess of proteinogenic and non‐proteinogenic amino acids by comprehensive two‐dimensional gas chromatography

Autor: Raphaël Pepino, Vanessa Leyva, Adrien D. Garcia, Jana Bocková, Cornelia Meinert

Publikováno v: Journal of Separation Science
Journal of Separation Science, 2022, 45 (24), pp.4416-4426. ⟨10.1002/jssc.202200606⟩

This work proposes a comprehensive two-dimensional gas chromatography method for the resolution and quantification of 27 amino acids, including 17 enantiomeric pairs, as stable N-trifluoroacetyl-O-methyl ester derivatives. The derivatization approach

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b6b6731fec56b773e3c836e42033989

Chiroptical activity of gas-phase propylene oxide predicting the handedness of interstellar circular polarization in the presolar nebula

Autor: Adrien D. Garcia, Jérémie Topin, Jana Bocková, Nykola C. Jones, Søren V. Hoffmann, Cornelia Meinert

Publikováno v: Garcia, A D, Topin, J, Bocková, J, Jones, N C, Hoffmann, S V & Meinert, C 2022, ' Chiroptical activity of gas-phase propylene oxide predicting the handedness of interstellar circular polarization in the presolar nebula ', Science Advances, vol. 8, no. 46, add4614 . https://doi.org/10.1126/sciadv.add4614
Science Advances
Science Advances, 2022, 8 (46), ⟨10.1126/sciadv.add4614⟩

International audience; Propylene oxide, the first chiral molecule recently detected in the interstellar medium, has once again raised the question whether biomolecular chirality might have cosmic origins. However, accurate chiroptical properties of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d38523ef4441f7ed4343c41fe2f55e27

Racemate Resolution of Alanine and Leucine on Homochiral Quartz, and Its Alteration by Strong Radiation Damage.

Autor: Garcia, Adrien D.¹ (AUTHOR) adrien.garcia@univ-cotedazur.fr, Meinert, Cornelia¹ (AUTHOR) cornelia.meinert@univ-cotedazur.fr, Finger, Friedrich² (AUTHOR) friedrich.finger@sbg.ac.at, Meierhenrich, Uwe J.¹ (AUTHOR), Hejl, Ewald³ (AUTHOR) cornelia.meinert@univ-cotedazur.fr

Publikováno v: Life (2075-1729). Nov2021, Vol. 11 Issue 11, p1222-1222. 1p.