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Showing 1–8 of 8 results
Advanced filters: Author: Wojciech Gawelda Clear advanced filters

  • In time-resolved measurements it is crucial to know the time delay between the exciting and probing light pulses. Here the authors demonstrate a self-referencing common-path interferometer method measuring the arrival time between the X-ray free electron laser and the optical pulse to the target and thus their inherent timing jitter.

    • Michael Diez
    • Henning Kirchberg
    • Christian Bressler
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Interactions between reactive excited states of molecular photocatalysts and surrounding solvent can dictate reaction pathways, but are not readily accessible to conventional spectroscopic methods. Here the authors use diffuse X-ray scattering and theory to study the atomistic solvation dynamics of a photoexcited di-iridium complex in acetonitrile.

    • Tim B. van Driel
    • Kasper S. Kjær
    • Kelly J. Gaffney
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • The change from low-spin hexacoordinated to high-spin pentacoordinated domed form in heam upon ligand detachment and the reverse process underlie the respiratory function. The authors, using femtosecond time-resolved X-ray emission spectroscopy, capture the transient states connecting the two forms in myoglobin-NO upon NO photoinduced detachment.

    • Dominik Kinschel
    • Camila Bacellar
    • Majed Chergui
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Nonadiabatic excited state processes involve mixing of electronic and nuclear wavefunctions, which are difficult to disentangle. Here the authors explore by time-resolved X-ray absorption near edge structure the wavepacket dynamics of a copper(I)-phenanthroline complex, resolving different vibrational modes.

    • Tetsuo Katayama
    • Thomas Northey
    • Thomas J. Penfold
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-8

  • Electron spin is a fundamental property of molecules, and changes in spin state affect both molecular structure and dynamics. Here, the authors resolve, by ultrafast electron diffraction, the nuclear reorganization stabilizing spin transitions in a [FeII(bpy)3](PF6)2 crystal.

    • Yifeng Jiang
    • Lai Chung Liu
    • R. J. Dwayne Miller
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • Metal-oxide nanostructures are used in a range of light-driven applications, yet the fundamentals behind their properties are poorly understood. Here the authors probe photoexcited zinc oxide nanoparticles using time-resolved X-ray spectroscopy, identifying photocatalytically-active hole traps as oxygen vacancies in the lattice.

    • Thomas J. Penfold
    • Jakub Szlachetko
    • Christopher J. Milne
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Photoinduced electron transfer in solvated molecular assemblies occurs on the ultrafast timescale before full electronic and geometric relaxation take place. Here Canton et al.monitor this out-of-equilibrium process in a donor–acceptor bimetallic assembly using an X-ray free-electron laser.

    • Sophie E. Canton
    • Kasper S. Kjær
    • Martin M. Nielsen
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-10

  • Femtosecond resolution X-ray fluorescence spectroscopy is shown to track the charge and spin dynamics triggered when an iron coordination complex is excited by light, and establishes the critical role of intermediate spin states in the de-excitation process.

    • Wenkai Zhang
    • Roberto Alonso-Mori
    • Kelly J. Gaffney
    Research
    Nature
    Volume: 509, P: 345-348