Record Details

Title:
Femtosecond X-ray Absorption Spectroscopy at a Hard X-ray Free Electron Laser: Application to Spin Crossover Dynamics
Topic:
Abstract:
X-ray free electron lasers (XFELs) deliver short (<100 fs) and intense (1012 photons) pulses of hard X-rays, making them excellent sources for time-resolved studies. Here we show that, despite the inherent instabilities of current (SASE based) XFELs, they can be used for measuring high-quality X-ray absorption data and we report femtosecond time-resolved X-ray absorption near-edge spectroscopy (XANES) measurements of a spin-crossover system, iron(II) tris(2,2′-bipyridine) in water. The data indicate that the low-spin to high-spin transition can be modeled by single-exponential kinetics convoluted with the overall time resolution. The resulting time constant is 160 fs.
Imprint:
Washington, DC, American Chemical Society, 2013
Journal Information:
J. Phys. Chem. A, 117, 4, 735-740 (2013)
ISSN:
1520-5215
1089-5639
External related publications:
10.1021/jp312559h
WOS:000314492900005 (WOS)
Language(s):
English


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 Record created 2016-10-11, last modified 2017-09-07

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