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Accueil > Équipes scientifiques > Surfaces, Interfaces, Molecules & 2D Materials (SIM2D) > Chimie de surface & électrons lents, 0-50 eV > Electron-induced processes on mixed molecular ices

Electron-induced processes on mixed molecular ices

par Amiaud Lionel - 17 juillet 2015

Electron-induced processes on CH_<i>3</i>COOD:NH_3 mixed ice

Synthèse de la glycine induite par électrons lents

One of the team’s previous researches focused on the simplest amino acid - Glycine. On a mixed ice of acetic acid and ammonia, low-energy electon irradiation was performed and formation of glycine was subsequently observed. This study was able to show that low-energy electrons play a role in interstellar media especially in enrichment mechanisms of complex chemical compounds.

The HREEL spectra is shown on the left for ices of NH_3 (blue curve), CH_3COOD (black curve), and mixed CH_<i>3</i>COOD:NH_3 (red curve). After irradiation of the mixed ice using 20 eV electrons, the purple spectrum was obtained showing characteristic peaks (and therefore, formation) of glycine. (PCCP (8), 2006, 5564 - 5568)

Other publications from this laboratory along this theme :

- Chemistry induced by low-energy electrons in condensed multilayers of ammonia and carbon dioxide.
M. Bertin, I. Martin, F. Duvernay, P. Theule, J.B. Bossa, F. Borget, E. Illenberger, A. Lafosse, T. Chiavassa and R. Azria. Phys. Chem. Chem. Phys. 11 (2009) 1838–1845.

- Chemistry induced by low-energy electrons in condensed multilayers of pure small organic acids.
I. Martin, M. Bertin, A. Domaracka, R. Azria, E. Illenberger, and A. Lafosse
Int. J. Mass Spectrom. 277 (2008) 262-268

- High-resolution vibrational electron-energy-loss spectroscopy of gaseous and solid glycine.
E. Burean, R. Abouaf, A. Lafosse, R. Azria and P. Swiderek
J. Phys. Chem. C 112 (2008) 9405-9411

- Electron stimulated Desorption of H- ions from condensed acetic acid.
M. Bertin, D. Cáceres, M.P. Davis, R. Balog, A. Lafosse, N.J. Mason, E. Illenberger, and R. Azria
Chem. Phys. Lett. 433 (2007) 292

- Reactivity induced at 25 K by low-energy electron irradiation of condensed NH_3-CH_3COOD (1:1) mixture
A. Lafosse, M. Bertin, A. Domaracka, D. Pliszka, E. Illenberger, and R. Azria
Phys. Chem. Chem. Phys. 8 (2006) 5564

- Low-energy electrons in interstellar ice systems produce complexbiomolecules. Amino acids in space. Highlighted in Chemical Science 4(2) (2007) C10 and Chemistry World 4(2) (2007)

- Le milieu interstellaire, berceau de la vie. Plein Sud, Le magazine d’information de l’université Paris-Sud juin-juillet 2007, numéro 66, p21.

- Reactions in nanofilms of trifluoroacetic acid (CF_3COOH) driven by low energy electrons.
M. Orzol, T. Sedlacko, R. Balog, J. Langer, A. Lafosse, M. Bertin, A. Domaracka, R. Azria, G.P. Karwasz, and E. Illenberger
Int. J. Mass Spectrometry 254 (2006) 63

- Reactions in condensed formic acid (HCOOH) induced by low energy (<20 eV) electrons
T. Sedlacko, R. Balog, A. Lafosse, M. Stano, S. Matejcik, R. Azria, and E. Illenberger. Phys. Chem. Chem. Phys.7 (6), 1277 – 1282 (2005).