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Asmus Ougaard Dohn
Researcher at University of Iceland
Publications - 48
Citations - 1311
Asmus Ougaard Dohn is an academic researcher from University of Iceland. The author has contributed to research in topics: Scattering & Solvation. The author has an hindex of 19, co-authored 40 publications receiving 1029 citations. Previous affiliations of Asmus Ougaard Dohn include Technical University of Denmark & University of Copenhagen.
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Journal ArticleDOI
Visualizing the non-equilibrium dynamics of photoinduced intramolecular electron transfer with femtosecond X-ray pulses
Sophie E. Canton,Kasper S. Kjær,György Vankó,Tim Brandt van Driel,Shin-ichi Adachi,Amélie Bordage,Christian Bressler,Pavel Chábera,Morten Christensen,Asmus Ougaard Dohn,Andreas Galler,Wojciech Gawelda,David J. Gosztola,Kristoffer Haldrup,Tobias Harlang,Yizhu Liu,Klaus Braagaard Møller,Zoltán Németh,Shunsuke Nozawa,Mátyás Pápai,Tokushi Sato,Takahiro Sato,Karina Suárez-Alcántara,Tadashi Togashi,Kensuke Tono,Jens Uhlig,Dimali A. Vithanage,Kenneth Wärnmark,Makina Yabashi,Jianxin Zhang,Villy Sundström,Martin Nielsen +31 more
TL;DR: These measurements constitute the first X-ray-based visualization of a non-equilibrated intramolecular electron transfer process over large interatomic distances and establish that mediation through electronically excited molecular states is a key mechanistic feature.
Journal ArticleDOI
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,György Vankó,Wojciech Gawelda,Andreas Galler,Gilles Doumy,Anne Marie March,Elliot P. Kanter,Amélie Bordage,Asmus Ougaard Dohn,T. B. van Driel,Kasper S. Kjær,Henrik T. Lemke,Sophie E. Canton,Jens Uhlig,Villy Sundström,Linda Young,Stephen H. Southworth,Martin Nielsen,Christian Bressler +18 more
TL;DR: Combining information from X-ray emission spectroscopy and scattering, the excitation fraction as well as the temperature and density changes of the solvent can be closely followed on the subnanosecond time scale of the HS lifetime, allowing the detection of an ultrafast change in bulk solvent density.
Journal ArticleDOI
Femtosecond X-Ray Scattering Study of Ultrafast Photoinduced Structural Dynamics in Solvated[Co(terpy)2]2$
Elisa Biasin,Tim Brandt van Driel,Kasper S. Kjær,Kasper S. Kjær,Kasper S. Kjær,Asmus Ougaard Dohn,Morten Christensen,Tobias Harlang,Pavel Chábera,Yizhu Liu,Jens Uhlig,Mátyás Pápai,Zoltán Németh,Robert W. Hartsock,Winnie Liang,Jianxin Zhang,Roberto Alonso-Mori,Matthieu Chollet,James M. Glownia,Silke Nelson,Dimosthenis Sokaras,Tadesse Assefa,Alexander Britz,Alexander Britz,Andreas Galler,Wojciech Gawelda,Wojciech Gawelda,Christian Bressler,Kelly J. Gaffney,Henrik T. Lemke,Henrik T. Lemke,Klaus Braagaard Møller,Martin Nielsen,Villy Sundström,György Vankó,Kenneth Wärnmark,Sophie E. Canton,Sophie E. Canton,Kristoffer Haldrup +38 more
TL;DR: It is found 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.
Journal ArticleDOI
Finding intersections between electronic excited state potential energy surfaces with simultaneous ultrafast X-ray scattering and spectroscopy
Kasper S. Kjær,Kasper S. Kjær,Kasper S. Kjær,Tim Brandt van Driel,Tobias Harlang,Tobias Harlang,Kristjan Kunnus,Elisa Biasin,Kathryn Ledbetter,Robert W. Hartsock,Marco Reinhard,Sergey Koroidov,Lin Li,Mads G. Laursen,Frederik B. Hansen,Peter Vester,Morten Christensen,Kristoffer Haldrup,Martin Nielsen,Asmus Ougaard Dohn,Mátyás Pápai,Mátyás Pápai,Klaus Braagaard Møller,Pavel Chábera,Yizhu Liu,H. Tatsuno,Cornelia Timm,Martin Jarenmark,Jens Uhlig,Villy Sundstöm,Kenneth Wärnmark,Petter Persson,Zoltán Németh,Dorottya Sárosiné Szemes,Éva G. Bajnóczi,György Vankó,Roberto Alonso-Mori,James M. Glownia,Silke Nelson,Marcin Sikorski,Dimosthenis Sokaras,Sophie E. Canton,Henrik T. Lemke,Henrik T. Lemke,Kelly J. Gaffney +44 more
TL;DR: Combined X-ray free-electron laser techniques pinpoints loci of intersections between potential energy surfaces of a photo-excited 3d transition-metal centered molecule.
Journal ArticleDOI
Observing Solvation Dynamics with Simultaneous Femtosecond X-ray Emission Spectroscopy and X-ray Scattering
Kristoffer Haldrup,Wojciech Gawelda,Rafael Abela,Roberto Alonso-Mori,Uwe Bergmann,Amélie Bordage,M. Cammarata,Sophie E. Canton,Asmus Ougaard Dohn,Tim Brandt van Driel,David M. Fritz,Andreas Galler,Pieter Glatzel,Tobias Harlang,Kasper S. Kjær,Kasper S. Kjær,Henrik T. Lemke,Henrik T. Lemke,Klaus Braagaard Møller,Zoltán Németh,Mátyás Pápai,Mátyás Pápai,Norbert Sas,Jens Uhlig,Diling Zhu,György Vankó,Villy Sundström,Martin Nielsen,Christian Bressler,Christian Bressler +29 more
TL;DR: This work has studied the intra- and intermolecular dynamics of a model chromophore, aqueous [Fe(bpy)3](2+), with complementary X-ray tools in a single experiment exploiting intense XFEL radiation as a probe to extract new information about the solvation dynamic processes unfolding during the first picosecond.