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Title: Energy-dispersive X-ray emission spectroscopy using an X-ray free-electron laser in a shot-by-shot mode

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
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  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Technische Univ. Berlin (Germany)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stockholm Univ., Stockholm (Sweden)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States); Technische Univ. Berlin (Germany)
  7. Umea Univ., Umea (Sweden)
  8. European Synchrotron Radiation Facility, Grenoble Cedex (France)

The ultrabright femtosecond X-ray pulses provided by X-ray free-electron lasers open capabilities for studying the structure and dynamics of a wide variety of systems beyond what is possible with synchrotron sources. Recently, this “probe-before-destroy” approach has been demonstrated for atomic structure determination by serial X-ray diffraction of microcrystals. There has been the question whether a similar approach can be extended to probe the local electronic structure by X-ray spectroscopy. To address this, we have carried out femtosecond X-ray emission spectroscopy (XES) at the Linac Coherent Light Source using redox-active Mn complexes. XES probes the charge and spin states as well as the ligand environment, critical for understanding the functional role of redox-active metal sites. Kβ1,3 XES spectra of MnII and Mn2III,IV complexes at room temperature were collected using a wavelength dispersive spectrometer and femtosecond X-ray pulses with an individual dose of up to >100 MGy. The spectra were found in agreement with undamaged spectra collected at low dose using synchrotron radiation. Our results demonstrate that the intact electronic structure of redox active transition metal compounds in different oxidation states can be characterized with this shot-by-shot method. This opens the door for studying the chemical dynamics of metal catalytic sites by following reactions under functional conditions. Furthermore, the technique can be combined with X-ray diffraction to simultaneously obtain the geometric structure of the overall protein and the local chemistry of active metal sites and is expected to prove valuable for understanding the mechanism of important metalloproteins, such as photosystem II.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1132324
Report Number(s):
SLAC-REPRINT-2014-130
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 109, Issue 47; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 94 works
Citation information provided by
Web of Science

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A compact dispersive refocusing Rowland circle X-ray emission spectrometer for laboratory, synchrotron, and XFEL applications journal July 2017
Accurate macromolecular structures using minimal measurements from X-ray free-electron lasers journal March 2014
Goniometer-based femtosecond crystallography with X-ray free electron lasers journal October 2014
Valence to Core X-ray Emission Spectroscopy journal May 2014
A von Hamos-type hard X-ray spectrometer at the PETRA III beamline P64 text January 2020
High-resolution X-ray emission spectroscopy with transition-edge sensors: present performance and future potential journal April 2015
Drop-on-demand sample delivery for studying biocatalysts in action at X-ray free-electron lasers journal February 2017
Valence‐to‐Core X‐ray Emission Spectroscopy as a Probe of O−O Bond Activation in Cu 2 O 2 Complexes journal July 2019
Structural studies on photosystem II of cyanobacteria journal December 2013
Taking snapshots of photosynthetic water oxidation using femtosecond X-ray diffraction and spectroscopy journal July 2014
Ligand manipulation of charge transfer excited state relaxation and spin crossover in [Fe(2,2′-bipyridine) 2 (CN) 2 ] journal July 2017
A seven-crystal Johann-type hard x-ray spectrometer at the Stanford Synchrotron Radiation Lightsource journal May 2013
Diagram, valence-to-core, and hypersatellite K β X-ray transitions in metallic chromium journal February 2019
Valence-to-Core X-Ray Emission Spectroscopy of Iron-Carbonyl Complexes: Implications for the Examination of Catalytic Intermediates journal October 2013
Valence‐to‐Core X‐ray Emission Spectroscopy as a Probe of O−O Bond Activation in Cu 2 O 2 Complexes journal May 2019
Methods development for diffraction and spectroscopy studies of metalloenzymes at X-ray free-electron lasers journal July 2014
A Compact Dispersive Refocusing Rowland Circle X-ray Emission Spectrometer for Laboratory, Synchrotron, and XFEL Applications text January 2017
Radiation damage in protein crystallography at X-ray free-electron lasers journal December 2017
The Mn 4 Ca photosynthetic water-oxidation catalyst studied by simultaneous X-ray spectroscopy and crystallography using an X-ray free-electron laser journal July 2014
Simultaneous Femtosecond X-ray Spectroscopy and Diffraction of Photosystem II at Room Temperature journal February 2013
A von Hamos-type hard X-ray spectrometer at the PETRA III beamline P64 journal January 2020
A laboratory-based hard x-ray monochromator for high-resolution x-ray emission spectroscopy and x-ray absorption near edge structure measurements journal November 2014
Mn 4 Ca Cluster in Photosynthesis: Where and How Water is Oxidized to Dioxygen journal March 2014
AXSIS: Exploring the frontiers in attosecond X-ray science, imaging and spectroscopy text January 2016