Journal Article

PUBDB-2018-03687

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Attosecond Pump–Probe Spectroscopy of Charge Dynamics in Tryptophan

Lara-Astiaso, M. ; Galli, M.CFEL* ; Trabattoni, A.CFEL*DESY* ; Palacios, A. ; Ayuso, D. ; Frassetto, F. ; Poletto, L. ; De Camillis, S. ; Greenwood, J. ; Decleva, P. ; Tavernelli, I. ; Calegari, F. (Corresponding author)DESY* ; Nisoli, M. (Corresponding author) ; Martín, F. (Corresponding author)

2018
ACS Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.jpclett.8b01786  doi:10.3204/PUBDB-2018-03687

Abstract: Attosecond pump–probe experiments performed in small molecules have allowed tracking charge dynamics in the natural time scale of electron motion. That this is also possible in biologically relevant molecules is still a matter of debate, because the large number of available nuclear degrees of freedom might destroy the coherent charge dynamics induced by the attosecond pulse. Here we investigate extreme ultraviolet-induced charge dynamics in the amino acid tryptophan. We find that, although nuclear motion and nonadiabatic effects introduce some decoherence in the moving electron wave packet, these do not significantly modify the coherence induced by the attosecond pulse during the early stages of the dynamics, at least for molecules in their equilibrium geometry. Our conclusions are based on elaborate theoretical calculations and the experimental observation of sub-4 fs dynamics, which can only be reasonably assigned to electronic motion. Hence, attosecond pump–probe spectroscopy appears as a promising approach to induce and image charge dynamics in complex molecules.

Note: © American Chemical Society; Post referee fulltext in progress; Embargo 12 months from publication

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)
2. STARLIGHT - Steering attosecond electron dynamics in biomolecules with UV-XUV LIGHT pulses (637756) (637756)
3. LASERLAB-EUROPE - The Integrated Initiative of European Laser Research Infrastructures III (284464) (284464)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2018

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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