Journal Article

PUBDB-2026-01126

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Oxygen-specific photoelectron circular dichroism in gas-phase fenchone

Leroux, J.CFEL*Extern* ; Stemer, D.Extern* ; Credidio, B.Extern* ; Dudda, F.Extern* ; Heikura, E.Extern* ; Jose, A.Extern*DESY* ; Judt, A.XFEL.EU* ; Kuestner-Wetekam, C.Extern* ; Zander, M.Extern*DESY* ; Novikovskiy, N. M. ; Otto, T.XFEL.EU*DESY* ; Patil, P. R.DESY* ; Petersen, G.Extern*XFEL.EU* ; Savio, S.CFEL*Extern*XFEL.EU* ; Velasquez, N.Extern* ; Wieland, N.CFEL*Extern*XFEL.EU* ; Wülfing, L. ; Demekhin, P. (Corresponding author)Extern* ; Trinter, F. (Corresponding author)Extern*XFEL.EU* ; Ilchen, M. (Corresponding author)XFEL.EU*DESY*

2026
APS College Park, MD

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Please use a persistent id in citations: doi:10.1103/cgf3-cdpv  doi:10.3204/PUBDB-2026-01126

Abstract: Understanding the light-driven responses of chiral molecular systems at a fundamental level—electronically—via photoelectron circular dichroism (PECD) provides a pathway to unlock the intricate mechanisms governing the functionality of chiral molecules. The specific role of oxygen atoms in chiral compounds remains under-explored, despite their pivotal role in numerous functional systems. We report a joint experimental and theoretical study of the PECD of O 1⁢𝑠electrons from the randomly oriented chiral molecule fenchone (C10⁢H16⁡O)in the gas phase across a kinetic-energy range from 3 to 15 eV. We observe a substantial forward-backward asymmetry in the electron emission patterns across several eV, which is well reproduced by relaxed-core Hartree-Fock calculations. Our results provide a site-specific perspective on the chiral sensitivity of an oxygen atom directly connected to the stereocenter of a chiral molecule.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. X-ray Atto-Chirality (CFEL-XAC)
3. PETRA-S (FS-PETRA-S)
4. FLASH Photonen-Diagnose und Steuerungen (FS-FLASH-D)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Tiefe Einblicke in Materie (390715994) (390715994)
4. AQUACHIRAL - Chiral aqueous-phase chemistry (883759) (883759)
5. DFG project G:(GEPRIS)328961117 - SFB 1319: Extremes Licht zur Analyse und Kontrolle molekularer Chiralität (ELCH) (328961117) (328961117)
6. DFG project G:(GEPRIS)509471550 - Dynamik photoionisations-induzierter Prozesse in laser-präparierten Molekülen in der Gasphase und der wässrigen Phase (509471550) (509471550)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; ; ; ; Article Processing Charges ; Clarivate Analytics Master Journal List ; DOAJ Seal ; Emerging Sources Citation Index ; Fees ; IF < 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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