Real-time observation of a correlation-driven sub 3 fs charge migration in ionised adenine.
Journal
Communications chemistry
ISSN: 2399-3669
Titre abrégé: Commun Chem
Pays: England
ID NLM: 101725670
Informations de publication
Date de publication:
20 May 2021
20 May 2021
Historique:
received:
23
02
2021
accepted:
19
04
2021
entrez:
25
1
2023
pubmed:
20
5
2021
medline:
20
5
2021
Statut:
epublish
Résumé
Sudden ionisation of a relatively large molecule can initiate a correlation-driven process dubbed charge migration, where the electron density distribution is expected to rapidly move along the molecular backbone. Capturing this few-femtosecond or attosecond charge redistribution would represent the real-time observation of electron correlation in a molecule with the enticing prospect of following the energy flow from a single excited electron to the other coupled electrons in the system. Here, we report a time-resolved study of the correlation-driven charge migration process occurring in the nucleic-acid base adenine after ionisation with a 15-35 eV attosecond pulse. We find that the production of intact doubly charged adenine - via a shortly-delayed laser-induced second ionisation event - represents the signature of a charge inflation mechanism resulting from many-body excitation. This conclusion is supported by first-principles time-dependent simulations. These findings may contribute to the control of molecular reactivity at the electronic, few-femtosecond time scale.
Identifiants
pubmed: 36697766
doi: 10.1038/s42004-021-00510-5
pii: 10.1038/s42004-021-00510-5
pmc: PMC9814501
doi:
Types de publication
Journal Article
Langues
eng
Pagination
73Subventions
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 637756
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : 170620586
Informations de copyright
© 2021. The Author(s).
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