Journal Article

PUBDB-2024-01291

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Water is a radiation protection agent for ionised pyrrole

Johny, M.CFEL*Extern*XFEL.EU* ; Schouder, C. A.CFEL*Extern* ; Al-Refaie, A.Extern* ; He, L.CFEL*Extern*XFEL.EU* ; Wiese, J.CFEL*Extern*XFEL.EU* ; Stapelfeldt, H.Extern*XFEL.EU* ; Trippel, S. (Corresponding author)CFEL*XFEL.EU*DESY* ; Küpper, J.CFEL*XFEL.EU*DESY*

2024
RSC Publ. Cambridge

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Please use a persistent id in citations: doi:10.1039/D3CP03471B  doi:10.3204/PUBDB-2024-01291

Report No.: arXiv:2010.00453

Abstract: Radiation-induced damage of biological matter is an ubiquitous problem in nature. The influence of the hydration environment is widely discussed, but its exact role remains elusive. Utilising well defined solvated-molecule aggregates, we experimentally observed a hydrogen-bonded water molecule acting as a radiation protection agent for ionised pyrrole, a prototypical aromatic biomolecule. Pure samples of pyrrole and pyrrole(H$_2$O) were outer-valence ionised and the subsequent damage and relaxation processes were studied. Bare pyrrole ions fragmented through the breaking of C$-$C or N$-$C covalent bonds. However, for pyrrole(H$_2$O)$^+$, we observed a strong protection of the pyrrole ring through the dissociative release of neutral water or by transferring an electron or proton across the hydrogen bond. Overall, a single water molecule strongly reduces the fragmentation probability and thus the persistent radiation damage of singly-ionised pyrrole.

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Contributing Institute(s):

1. CFEL-CMI (FS-CFEL-CMI)
2. beauftragt von UNI (UNI/CUI)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. MEDEA - Molecular Electron Dynamics investigated by IntensE Fields and Attosecond Pulses (641789) (641789)
3. COMOTION - Controlling the Motion of Complex Molecules and Particles (614507) (614507)
4. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
5. Ex-Net-0002-Phase2-3 - Advanced Imaging of Matter: Structure, Dynamics and Control on the Atomic Scale - AIM (2018_Ex-Net-0002-Phase2-3) (2018_Ex-Net-0002-Phase2-3)
6. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2024

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Johny, M. (First author)CFEL*DESY* ; Schouder, C. A. ; Al-Refaie, A.Extern*DESY* ; He, L.CFEL*DESY* ; Wiese, J.CFEL*DESY* ; Stapelfeldt, H. ; Trippel, S. (Corresponding author)CFEL*DESY* ; Küpper, J.CFEL*DESY*
Water is a radiation protection agent for ionised pyrrole
[10.3204/PUBDB-2020-04386]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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