4.8 Article

X-ray Raman optical activity of chiral molecules

Journal

CHEMICAL SCIENCE
Volume 10, Issue 3, Pages 898-908

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc04120b

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Funding

  1. Chemical Sciences, Geosciences, and Biosciences division, Office of Basic Energy Sciences, Office of Science, U.S. Deparment of Energy [DE-FG02-04ER15571]
  2. National Science Foundation [CHE-1663822]
  3. DOE

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Resonant and off-resonant Raman Optical Activity signals in the X-ray regime (XROA) are predicted. XROA is a chiral-sensitive variant of the spontaneous Resonant Inelastic Scattering (RIXS) signal. Thanks to the highly localized nature of core excitations, these signals provide a direct probe of local chirality with high sensitivity to the molecular structure. We derive sum-over-states expressions for frequency domain XROA signals and apply them to tyrosine at the nitrogen and oxygen K-edges. Time-resolved extensions of ROA made possible by using additional pulses are briefly outlined.

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