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Guest-host interactions investigated by time-resolved X‑ray spectroscopies and scattering at MHz rates: solvation dynamics and photoinduced spin transition in aqueous Fe(bipy)3(2+).

• Kristoffer Haldrup, G. Vanko, +16 authors Christian Bressler
• The journal of physical chemistry. A
• 2012

We have studied the photoinduced low spin (LS) to high spin (HS) conversion of [Fe(bipy)(3)](2+) in aqueous solution. In a laser pump/X-ray probe synchrotron setup permitting simultaneous,… (More)

Bond shortening (1.4 Å) in the singlet and triplet excited states of [Ir2(dimen)4]2+ in solution determined by time-resolved X-ray scattering.

• Kristoffer Haldrup, Tobias C B Harlang, +8 authors Martin M Nielsen
• Inorganic chemistry
• 2011

Ground- and excited-state structures of the bimetallic, ligand-bridged compound Ir2(dimen)4(2+) are investigated in acetonitrile by means of time-resolved X-ray scattering. Following excitation by 2… (More)

Tracking excited-state charge and spin dynamics in iron coordination complexes.

• Wenkai Zhang, Roberto Alonso-Mori, +23 authors Kelly J Gaffney
• Nature
• 2014

Crucial to many light-driven processes in transition metal complexes is the absorption and dissipation of energy by 3d electrons. But a detailed understanding of such non-equilibrium excited-state… (More)

Visualizing the non-equilibrium dynamics of photoinduced intramolecular electron transfer with femtosecond X-ray pulses

• Sophie E. Canton, Kasper Skov Kjær, +29 authors Martin M Nielsen
• Nature communications
• 2015

Ultrafast photoinduced electron transfer preceding energy equilibration still poses many experimental and conceptual challenges to the optimization of photoconversion since an atomic-scale… (More)

Introducing a standard method for experimental determination of the solvent response in laser pump, X-ray probe time-resolved wide-angle X-ray scattering experiments on systems in solution.

• Kasper Skov Kjær, Tim B. van Driel, +7 authors Martin M Nielsen
• Physical chemistry chemical physics : PCCP
• 2013

In time-resolved laser pump, X-ray probe wide-angle X-ray scattering experiments on systems in solution the structural response of the system is accompanied by a solvent response. The solvent… (More)

Observing Solvation Dynamics with Simultaneous Femtosecond X-ray Emission Spectroscopy and X-ray Scattering.

• Kristoffer Haldrup, Wojciech Gawelda, +23 authors Christian Bressler
• The journal of physical chemistry. B
• 2016

In liquid phase chemistry dynamic solute-solvent interactions often govern the path, ultimate outcome, and efficiency of chemical reactions. These steps involve many-body movements on subpicosecond… (More)

Visualizing a protein quake with time-resolved X-ray scattering at a free-electron laser

• David Arnlund, Linda C. Johansson, +43 authors R. Marchesini S. Fromme R. Schorb S. Rupp D. Adolph M. Gorkhover Neutze
• Nature Methods
• 2014

We describe a method to measure ultrafast protein structural changes using time-resolved wide-angle X-ray scattering at an X-ray free-electron laser. We demonstrated this approach using multiphoton… (More)

Femtosecond X-Ray Scattering Study of Ultrafast Photoinduced Structural Dynamics in Solvated [Co(terpy)_{2}]^{2+}.

• Elisa Biasin, Tim B. van Driel, +30 authors Kristoffer Haldrup
• Physical review letters
• 2016

We study the structural dynamics of photoexcited [Co(terpy)_{2}]^{2+} in an aqueous solution with ultrafast x-ray diffuse scattering experiments conducted at the Linac Coherent Light Source. Through… (More)

Detailed Characterization of a Nanosecond-Lived Excited State: X-ray and Theoretical Investigation of the Quintet State in Photoexcited [Fe(terpy)2]2+

• György Vankó, Amélie Bordage, +26 authors Wojciech Gawelda
• The journal of physical chemistry. C…
• 2015

Theoretical predictions show that depending on the populations of the Fe 3d xy , 3d xz , and 3d yz orbitals two possible quintet states can exist for the high-spin state of the photoswitchable model… (More)

The negative piezoelectric effect of the ferroelectric polymer poly(vinylidene fluoride).

• Ilias Katsouras, Kamal Asadi, +9 authors Dago M. de Leeuw
• Nature materials
• 2016

Piezoelectricity describes interconversion between electrical charge and mechanical strain. As expected for lattice ions displaced in an electric field, the proportionality constant is positive for… (More)

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