Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.236001
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Funding
- U.S. Department of Energy, Office of Science, Basic Energy Science, Chemical Sciences, Geosciences and Biosciences Division [DE-AC02-06CH11357]
- U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES) [DE-AC02-06CH11357, DE-AC02-76SF00515]
- Laboratory Directed Research and Development (LDRD) - Argonne National Laboratory
- Swedish Science Council [2018-04088]
- European X-ray Free Electron Laser
- Singapore Ministry of Education [MOE2014-T2-2-052, RG105/17, RG109/18]
- CNRS GotoXFEL program
- Cluster of Excellence Advanced Imaging of Matter of the Deutsche Forschungsgemeinschaft (DFG)-EXC 2056 [390715994]
- Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-SC0019451]
- DTU Chemistry
- Independent Research Fund Denmark DFF-RP2 [7014-00258B]
- U.S. National Science Foundation [CHE-1856342]
- Hamburg Centre for Ultrafast Imaging
- Swedish Research Council [2018-04088] Funding Source: Swedish Research Council
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Resonant inelastic x-ray scattering (RIXS) provides remarkable opportunities to interrogate ultra-fast dynamics in liquids. Here we use RIXS to study the fundamentally and practically important hydroxyl radical in liquid water, OH(aq). Impulsive ionization of pure liquid water produced a short-lived population of OH(aq), which was probed using femtosecond x-rays from an x-ray free-electron laser. We find that RIXS reveals localized electronic transitions that are masked in the ultraviolet absorption spectrum by strong charge-transfer transitions-thus providing a means to investigate the evolving electronic structure and reactivity of the hydroxyl radical in aqueous and heterogeneous environments. First-principles calculations provide interpretation of the main spectral features.
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