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Journal articles
Ultrafast Nonadiabatic Cascade and Subsequent Photofragmentation of Extreme Ultraviolet Excited Caffeine Molecule
A. Marciniak
1
K. Yamazaki
2
S. Maeda
3
M. Reduzzi
4
V. Despre
1
M. Herve
1
M. Meziane
1
T. A. Niehaus
1
Vincent Loriot
1
A. I. Kuleff
5, 6
B. Schindler
1
I. Compagnon
1
G. Sansone
4, 7
Franck Lepine
1
G. Sansone 4, 7
Author
Franck Lepine 1
Author
1
ILM - Institut Lumière Matière [Villeurbanne] (UMR5306 CNRS Université Claude Bernard Lyon 1 Domaine Scientifique de La Doua Bâtiment Kastler, 10 rue Ada Byron 69622 Villeurbanne CEDEX, Franc - France)
- UCBL - Université Claude Bernard Lyon 1 (43, boulevard du 11 novembre 1918, 69622 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5306 (France)
2
Institute for Materials Research, Tohoku University (Aoba Ku, Sendai, Miyagi 9808577 - Japan)
- Tohoku University [Sendai] (2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan - Japan)
3
Hokkaido University [Sapporo, Japan] (5 Chome Kita 8 Jōnishi, Kita Ward, Sapporo, Hokkaido Prefecture 060-0808, Japon
- Japan)
4
POLIMI - Politecnico di Milano [Milan] (Piazza Leonardo da Vinci, 32 20133 Milano - Italy)
5
Universität Heidelberg [Heidelberg] ( Seminarstraße 2, 69117 Heidelberg - Germany)
6
ELI-ALPS (Szeged H-6720 - Hungary)
7
Albert-Ludwigs-Universität Freiburg (Georges-Köhler Allee 51 79110 Freiburg im Breisgau (Germany) - Germany)
Abstract : Ultrafast XUV chemistry is offering new opportunities to decipher the complex dynamics taking place in highly excited molecular states and thus better understand fundamental natural phenomena as molecule formation in interstellar media. We used ultrashort XUV light pulses to perform XUV pump–IR probe experiments in caffeine as a model of prebiotic molecule. We observed a 40 fs decay of excited cationic states. Guided by quantum calculations, this time scale is interpreted in terms of a nonadiabatic cascade through a large number of highly correlated states. This shows that the correlation driven nonadiabatic relaxation seems to be a general process for highly excited states, which might impact our understanding of molecular processing in interstellar media.
Document type :
Journal articles
Complete list of metadatas
https://hal-univ-lyon1.archives-ouvertes.fr/hal-02290286
Contributor : Depot 3 Lyon 1 <>
Submitted on : Tuesday, September 17, 2019 - 3:14:48 PM
Last modification on : Thursday, October 15, 2020 - 8:54:04 AM
Contributor : Depot 3 Lyon 1 <>
Submitted on : Tuesday, September 17, 2019 - 3:14:48 PM
Last modification on : Thursday, October 15, 2020 - 8:54:04 AM
Identifiers
- HAL Id : hal-02290286, version 1
- DOI : 10.1021/acs.jpclett.8b02964
Collections
UNIV-LYON1 | CNRS | ILM | UDL
Citation
A. Marciniak, K. Yamazaki, S. Maeda, M. Reduzzi, V. Despre, et al.. Ultrafast Nonadiabatic Cascade and Subsequent Photofragmentation of Extreme Ultraviolet Excited Caffeine Molecule. Journal of Physical Chemistry Letters, American Chemical Society, 2018, 9 (24), pp.6927-6933. ⟨10.1021/acs.jpclett.8b02964⟩. ⟨hal-02290286⟩
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