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Start Over Author "Alexander Britz" Journal physical review letters
2 results on '"Alexander Britz"'

1. Publisher’s Note: Femtosecond X-Ray Scattering Study of Ultrafast Photoinduced Structural Dynamics in Solvated [Co(terpy)2]2+ [Phys. Rev. Lett. 117 , 013002 (2016)]

Author

Pavel Chábera, Kasper S. Kjer, Henrik T. Lemke, Andreas Galler, Sophie E. Canton, Dimosthenis Sokaras, György Vankó, Silke Nelson, Tobias Harlang, Jianxin Zhang, Kristoffer Haldrup, James M. Glownia, Asmus Ougaard Dohn, Martin Nielsen, Kenneth Wärnmark, Matthieu Chollet, Zoltán Németh, Wojciech Gawelda, Kelly J. Gaffney, Peter Vester, Robert W. Hartsock, Alexander Britz, Villy Sundström, Klaus Braagaard Møller, Morten Christensen, Elisa Biasin, Roberto Alonso-Mori, Christian Bressler, Mátyás Pápai, Yizhu Liu, Winnie Liang, Tadesse Assefa, Jens Uhlig, and Tim Brandt van Driel

Subjects
Materials science, Scattering, Dynamics (mechanics), Femtosecond, X-ray, General Physics and Astronomy, Atomic physics, Ultrashort pulse
Published
2020
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2. Femtosecond X-Ray Scattering Study of Ultrafast Photoinduced Structural Dynamics in Solvated[Co(terpy)2]2+

Author

Kenneth Wärnmark, Matthieu Chollet, Klaus Braagaard Møller, Wojciech Gawelda, Elisa Biasin, Morten Christensen, Jianxin Zhang, Mátyás Pápai, Kelly J. Gaffney, Henrik T. Lemke, Kristoffer Haldrup, Villy Sundström, Jens Uhlig, Andreas Galler, James M. Glownia, Robert W. Hartsock, Silke Nelson, Winnie Liang, Roberto Alonso-Mori, György Vankó, Dimosthenis Sokaras, Kasper S. Kjær, Tim Brandt van Driel, Asmus Ougaard Dohn, Christian Bressler, Zoltán Németh, Martin Nielsen, Yizhu Liu, Pavel Chábera, Alexander Britz, Sophie E. Canton, Tobias Harlang, and Tadesse Assefa

Subjects
Materials science, Spin states, Scattering, General Physics and Astronomy, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Bond length, Photoexcitation, Femtosecond, Molecule, Density functional theory, Physics::Chemical Physics, Atomic physics, 0210 nano-technology, Excitation
Abstract

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 direct comparisons with density functional theory calculations, our analysis shows that the photoexcitation event leads to elongation of the Co-N bonds, followed by coherent Co-N bond length oscillations arising from the impulsive excitation of a vibrational mode dominated by the symmetrical stretch of all six Co-N bonds. This mode has a period of 0.33 ps and decays on a subpicosecond time scale. We find that the equilibrium bond-elongated structure of the high spin state is established on a single-picosecond time scale and that this state has a lifetime of ∼7 ps.

Published
2016
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