Ultrafast X-ray Absorption Spectroscopy

Bressler, Christian; Chergui, Majed

doi:10.1021/cr0206667

Cited by 469 publications

(372 citation statements)

References 196 publications

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“…The relation between geometrical features and XANES response mainly depends on the multiple-scattering processes (figure 5c) of the excited photoelectron after the ionization threshold, which dominate with respect to the single-scattering events due to the lowered photoelectron energy. Moreover, the first 10 eV after the ionization limit are, in many cases, influenced also by other kinds of physical interactions, directly dependent on the properties of the investigated sample (so-called 'shape resonances' in molecules, core excitons in crystals, unoccupied local electronic states in metals and insulators [28]). …”

Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

Synchrotron ultrafast techniques for photoactive transition metal complexes

Borfecchia

Garino

Salassa

et al. 2013

Phil. Trans. R. Soc. A.

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In the last decade, the use of time-resolved X-ray techniques has revealed the structure of lightgenerated transient species for a wide range of samples, from small organic molecules to proteins. Time resolutions of the order of 100 ps are typically reached, allowing one to monitor thermally equilibrated excited states and capture their structure as a function of time. This review aims at providing a general overview of the application of timeresolved X-ray solution scattering (TR-XSS) and time-resolved X-ray absorption spectroscopy (TR-XAS), the two techniques prevalently employed in the investigation of light-triggered structural changes of transition metal complexes. In particular, we herein describe the fundamental physical principles for static XSS and XAS and illustrate the theory of timeresolved XSS and XAS together with data acquisition and analysis strategies. Selected pioneering examples of photoactive transition metal complexes studied by TR-XSS and TR-XAS are discussed in depth.

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Section: X-ray Transient Absorption: Theoretical Background and Expermentioning

confidence: 99%

Synchrotron ultrafast techniques for photoactive transition metal complexes

Borfecchia

Garino

Salassa

et al. 2013

Phil. Trans. R. Soc. A.

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“…In nearly all these cases, such studies on molecular systems have employed X-ray absorption spectroscopy [24,25,26] or X-ray scattering (XRS) techniques [25,27,28,29,30,31,32] only and have been, with few exceptions, limited to low repetition rates (ca. 1 kHz) by using Ti:sapphirebased amplified laser systems, which deliver a sufficient number of optical photons to match the number of ground state molecules in the laser beam [24]. In this way, the photoexcitation of a sufficient fraction of the sample (5-50 %) was ensured for each laser pulse.…”

Section: Introductionmentioning

confidence: 99%

Spin-state studies with XES and RIXS: From static to ultrafast

Vankó

Bordage

Glatzel

et al. 2013

Journal of Electron Spectroscopy and Related Phenomena

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We report on extending hard X-ray emission spectroscopy (XES) together with resonant inelastic X-ray scattering (RIXS) to study ultrafast phenomena in a pump-probe scheme at MHz repetition rates. The investigated system consists of low-spin (LS) Fe II complex compounds, where optical pulses induce a spinstate transition to their ≈ nanosecond-lived high-spin (HS) state. Time-resolved XES clearly reflects the spinstate variations with very high signal-to-noise ratio, in agreement with HS-LS difference spectra measured via thermally induced spin crossover, and reference HS-LS systems in static experiments. 1s2p RIXS, measured at the Fe 1s pre-edge region shows variations after laser excitation, which are consistent with the formation of the HS state. Our results demonstrate that now X-ray spectroscopy experiments with overall rather weak signals, such as RIXS, can be reliably exploited to study chemical and physical transformations on ultrafast time scales.

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“…10,19 In the last few years, time-resolved XAS (X-ray Absorption Spectroscopy) has been successfully employed for studying excited-state structures in solution, as demonstrated by the work of several authors. [20][21][22][23][24][25] Direct observation of structural dynamics with atomic resolution can be also obtained by TR-WAXS (Time-Resolved Wide Angle X-ray Scattering). This young technique has been used to characterize light-induced structural changes in solution for a variety of systems ranging from diatomic molecules 26 to large biomolecules.…”

Section: Introductionmentioning

confidence: 99%

Photo-Induced Pyridine Substitution in cis-[Ru(bpy)₂(py)₂]Cl₂: A Snapshot by Time-Resolved X-ray Solution Scattering

et al. 2010

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. (2010). Photo-induced pyridine substitution in cis-[Ru(bpy)(2)(py)(2)]Cl-2: a snapshot by time-resolved X-ray solution scattering. Inorganic Chemistry, 49(23), pp. 11240-11248. Permanent WRAP url: http://wrap.warwick.ac.uk/4680 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes the work of researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-forprofit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Publisher's statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in Inorganic Chemistry, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/ic102021k A note on versions: The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP url' above for details on accessing the published version and note that access may require a subscription.

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Ultrafast X-ray Absorption Spectroscopy

Cited by 469 publications

References 196 publications

Synchrotron ultrafast techniques for photoactive transition metal complexes

Synchrotron ultrafast techniques for photoactive transition metal complexes

Spin-state studies with XES and RIXS: From static to ultrafast

Photo-Induced Pyridine Substitution in cis-[Ru(bpy)₂(py)₂]Cl₂: A Snapshot by Time-Resolved X-ray Solution Scattering

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Ultrafast X-ray Absorption Spectroscopy

Cited by 469 publications

References 196 publications

Synchrotron ultrafast techniques for photoactive transition metal complexes

Synchrotron ultrafast techniques for photoactive transition metal complexes

Spin-state studies with XES and RIXS: From static to ultrafast

Photo-Induced Pyridine Substitution in cis-[Ru(bpy)2(py)2]Cl2: A Snapshot by Time-Resolved X-ray Solution Scattering

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Product

Resources

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Photo-Induced Pyridine Substitution in cis-[Ru(bpy)₂(py)₂]Cl₂: A Snapshot by Time-Resolved X-ray Solution Scattering