Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Robert W Hartsock"'
Autor:
Kristjan Kunnus, Ida Josefsson, Ivan Rajkovic, Simon Schreck, Wilson Quevedo, Martin Beye, Sebastian Grübel, Mirko Scholz, Dennis Nordlund, Wenkai Zhang, Robert W Hartsock, Kelly J Gaffney, William F Schlotter, Joshua J Turner, Brian Kennedy, Franz Hennies, Simone Techert, Philippe Wernet, Michael Odelius, Alexander Föhlisch
Publikováno v:
New Journal of Physics, Vol 18, Iss 10, p 103011 (2016)
Ultrafast electronic and structural dynamics of matter govern rate and selectivity of chemical reactions, as well as phase transitions and efficient switching in functional materials. Since x-rays determine electronic and structural properties with e
Externí odkaz:
https://doaj.org/article/18009923150c4edcae6855b83689d99f
Autor:
Marco E. Reinhard, Michael W. Mara, Thomas Kroll, Hyeongtaek Lim, Ryan G. Hadt, Roberto Alonso-Mori, Matthieu Chollet, James M. Glownia, Silke Nelson, Dimosthenis Sokaras, Kristjan Kunnus, Tim Brandt van Driel, Robert W. Hartsock, Kasper S. Kjaer, Clemens Weninger, Elisa Biasin, Leland B. Gee, Keith O. Hodgson, Britt Hedman, Uwe Bergmann, Edward I. Solomon, Kelly J. Gaffney
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
The dissociation mechanism of the heme axial ligand in heme proteins is not yet fully understood. The authors investigate the photodissociation dynamics of the bond between heme Fe and methionine S in ferrous cytochrome c using femtosecond time-resol
Externí odkaz:
https://doaj.org/article/b36cfbe98c1e409a802196ff2da67f18
Autor:
Kristjan Kunnus, Morgane Vacher, Tobias C. B. Harlang, Kasper S. Kjær, Kristoffer Haldrup, Elisa Biasin, Tim B. van Driel, Mátyás Pápai, Pavel Chabera, Yizhu Liu, Hideyuki Tatsuno, Cornelia Timm, Erik Källman, Mickaël Delcey, Robert W. Hartsock, Marco E. Reinhard, Sergey Koroidov, Mads G. Laursen, Frederik B. Hansen, Peter Vester, Morten Christensen, Lise Sandberg, Zoltán Németh, Dorottya Sárosiné Szemes, Éva Bajnóczi, Roberto Alonso-Mori, James M. Glownia, Silke Nelson, Marcin Sikorski, Dimosthenis Sokaras, Henrik T. Lemke, Sophie E. Canton, Klaus B. Møller, Martin M. Nielsen, György Vankó, Kenneth Wärnmark, Villy Sundström, Petter Persson, Marcus Lundberg, Jens Uhlig, Kelly J. Gaffney
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)
Photoinduced non-adiabatic intramolecular processes have important applications but their mechanisms are challenging to explore. Here the authors detect and assign vibrational wavepacket dynamics in a Fe carbene complex by ultrafast X-ray emission sp
Externí odkaz:
https://doaj.org/article/6b31a8a42e654935b702259eb2eae14d
Autor:
Tim B. van Driel, Kasper S. Kjær, Robert W. Hartsock, Asmus O. Dohn, Tobias Harlang, Matthieu Chollet, Morten Christensen, Wojciech Gawelda, Niels E. Henriksen, Jong Goo Kim, Kristoffer Haldrup, Kyung Hwan Kim, Hyotcherl Ihee, Jeongho Kim, Henrik Lemke, Zheng Sun, Villy Sundström, Wenkai Zhang, Diling Zhu, Klaus B. Møller, Martin M. Nielsen, Kelly J. Gaffney
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
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 th
Externí odkaz:
https://doaj.org/article/fc2761474a3545f8abc536d15c7246a2
Autor:
Kasper S. Kjær, Wenkai Zhang, Roberto Alonso-Mori, Uwe Bergmann, Matthieu Chollet, Ryan G. Hadt, Robert W. Hartsock, Tobias Harlang, Thomas Kroll, Katharina Kubiček, Henrik T. Lemke, Huiyang W. Liang, Yizhu Liu, Martin M. Nielsen, Joseph S. Robinson, Edward I. Solomon, Dimosthenis Sokaras, Tim B. van Driel, Tsu-Chien Weng, Diling Zhu, Petter Persson, Kenneth Wärnmark, Villy Sundström, Kelly J. Gaffney
Publikováno v:
Structural Dynamics, Vol 4, Iss 4, Pp 044030-044030-11 (2017)
We have used femtosecond resolution UV-visible and Kβ x-ray emission spectroscopy to characterize the electronic excited state dynamics of [Fe(bpy)2(CN)2], where bpy=2,2′-bipyridine, initiated by metal-to-ligand charge transfer (MLCT) excitation.
Externí odkaz:
https://doaj.org/article/5abc3001b7544e61a05379135a1b41f8
Autor:
Kristjan Kunnus, Hyeongtaek Lim, Thomas Kroll, Robert W. Hartsock, Dimosthenis Sokaras, Britt Hedman, Leland B. Gee, Kelly J. Gaffney, Silke Nelson, Clemens Weninger, James M. Glownia, Michael W. Mara, Ryan G. Hadt, Elisa Biasin, Tim Brandt van Driel, Uwe Bergmann, Edward I. Solomon, Marco Reinhard, Keith O. Hodgson, Matthieu Chollet, Kasper S. Kjær, Roberto Alonso-Mori
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Nature Communications
Nature Communications
The dynamics of photodissociation and recombination in heme proteins represent an archetypical photochemical reaction widely used to understand the interplay between chemical dynamics and reaction environment. We report a study of the photodissociati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5caaefb3f747ff4fc4d9473dc120a0e3
https://doaj.org/article/b36cfbe98c1e409a802196ff2da67f18
https://doaj.org/article/b36cfbe98c1e409a802196ff2da67f18
Autor:
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, Tim Brandt van Driel
Publikováno v:
Physical Review Letters. 124
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8e639c27a6a77a1745519d5003063ef
https://doi.org/10.1103/physrevlett.124.199902
https://doi.org/10.1103/physrevlett.124.199902
Autor:
Tobias Harlang, Klaus Braagaard Møller, Pavel Chábera, Elisa Biasin, Robert W. Hartsock, Mátyás Pápa, György Vankó, Henrik T. Lemke, Marcus Lundberg, Martin Nielsen, Sergey Koroidov, Morten Christensen, Morgane Vacher, H. Tatsuno, Erik Källman, Kelly J. Gaffney, Dorottya Sárosiné Szemes, Marcin Sikorski, Kristjan Kunnus, Dimosthenis Sokaras, Éva G. Bajnóczi, Kasper S. Kjær, Silke Nelson, Sophie E. Canton, Zoltán Németh, Cornelia Timm, Jens Uhlig, Marco Reinhard, Kenneth Wärnmark, Lise Orduk Sandberg, Kristoffer Haldrup, Yizhu Liu, James M. Glownia, Peter Vester, Tim Brandt van Driel, Villy Sundström, Mads G. Laursen, Mickaël G. Delcey, Roberto Alonso-Mori, Petter Persson, Frederik B. Hansen
Publikováno v:
Kunnus, K, Vacher, M, Harlang, T C B, Kjær, K S, Haldrup, K, Biasin, E, van Driel, T B, Pápai, M, Chabera, P, Liu, Y, Tatsuno, H, Timm, C, Källman, E, Delcey, M, Hartsock, R W, Reinhard, M E, Koroidov, S, Laursen, M G, Hansen, F B, Vester, P, Christensen, M, Sandberg, L, Németh, Z, Szemes, D S, Bajnóczi, É, Alonso-Mori, R, Glownia, J M, Nelson, S, Sikorski, M, Sokaras, D, Lemke, H T, Canton, S E, Møller, K B, Nielsen, M M, Vankó, G, Wärnmark, K, Sundström, V, Persson, P, Lundberg, M, Uhlig, J & Gaffney, K J 2020, ' Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering ', Nature Communications, vol. 11, no. 1, 634 . https://doi.org/10.1038/s41467-020-14468-w
Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)
Kunnus, K, Vacher, M, Harlang, T C B, Kjær, K S, Haldrup, K, Biasin, E, van Driel, T B, Pápai, M I, Chabera, P, Liu, Y, Tatsuno, H, Timm, C, Källman, E, Delcey, M, Hartsock, R W, Reinhard, M E, Koroidov, S, Laursen, M, Hansen, F B, Vester, P, Christensen, M, Sandberg, L, Németh, Z, Szemes, D S, Bajnóczi, É, Alonso-Mori, R, Glownia, J M, Nelson, S, Sikorski, M, Sokaras, D, Lemke, H T, Canton, S E, Braagaard Møller, K, Nielsen, M M, Vankó, G, Wärnmark, K, Sundström, V, Persson, P, Lundberg, M, Uhlig, J & Gaffney, K J 2020, ' Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering ', Nature Communications, vol. 11, no. 1, 634 . https://doi.org/10.1038/s41467-020-14468-w
Nature Communications
Nature Communications, Nature Publishing Group, 2020, 11 (1), pp.634. ⟨10.1038/s41467-020-14468-w⟩
Nature Communications 11(1), 634 (1-11) (2020). doi:10.1038/s41467-020-14468-w
Nature Communications, Vol 11, Iss 1, Pp 1-11 (2020)
Kunnus, K, Vacher, M, Harlang, T C B, Kjær, K S, Haldrup, K, Biasin, E, van Driel, T B, Pápai, M I, Chabera, P, Liu, Y, Tatsuno, H, Timm, C, Källman, E, Delcey, M, Hartsock, R W, Reinhard, M E, Koroidov, S, Laursen, M, Hansen, F B, Vester, P, Christensen, M, Sandberg, L, Németh, Z, Szemes, D S, Bajnóczi, É, Alonso-Mori, R, Glownia, J M, Nelson, S, Sikorski, M, Sokaras, D, Lemke, H T, Canton, S E, Braagaard Møller, K, Nielsen, M M, Vankó, G, Wärnmark, K, Sundström, V, Persson, P, Lundberg, M, Uhlig, J & Gaffney, K J 2020, ' Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering ', Nature Communications, vol. 11, no. 1, 634 . https://doi.org/10.1038/s41467-020-14468-w
Nature Communications
Nature Communications, Nature Publishing Group, 2020, 11 (1), pp.634. ⟨10.1038/s41467-020-14468-w⟩
Nature Communications 11(1), 634 (1-11) (2020). doi:10.1038/s41467-020-14468-w
The non-equilibrium dynamics of electrons and nuclei govern the function of photoactive materials. Disentangling these dynamics remains a critical goal for understanding photoactive materials. Here we investigate the photoinduced dynamics of the [Fe(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73ae04935a2d02909d5408f241c691db
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290069
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290069
Autor:
Kristjan Kunnus, Kiryong Hong, Das Amit, Kasper S. Kjær, Marco Reinhard, Kelly J. Gaffney, C. Das Pemmaraju, Lin Li, Sergey Koroidov, Richard Eisenberg, Robert W. Hartsock, Amy A. Cordones
Publikováno v:
Inorganic Chemistry. 57:13167-13175
The valence electronic structure of several square planar Ni-centered complexes, previously shown to catalyze the hydrogen evolution reaction, are characterized using S K-edge and Ni L-edge X-ray absorption spectroscopy and electronic structure calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c893966b0d08cee9e1969ae77ea9d999
https://doi.org/10.1021/acs.inorgchem.8b01497
https://doi.org/10.1021/acs.inorgchem.8b01497
Solvent control of charge transfer excited state relaxation pathways in [Fe(2,2′-bipyridine)(CN)4]2−
Autor:
Martin Nielsen, Kristoffer Haldrup, Kristjan Kunnus, James M. Glownia, Marcin Sikorski, Pavel Chábera, Yizhu Liu, Zoltán Németh, Henrik T. Lemke, Kasper S. Kjær, Mads G. Laursen, Tim Brandt van Driel, Kathryn Ledbetter, Sophie E. Canton, Dorottya Sárosiné Szemes, Petter Persson, Frederik B. Hansen, Jens Uhlig, Kenneth Wärnmark, Sergey Koroidov, H. Tatsuno, Lin Li, Marco Reinhard, György Vankó, Peter Vester, Silke Nelson, Roberto Alonso-Mori, Elisa Biasin, Tobias Harlang, Dimosthenis Sokaras, Cornelia Timm, Amy A. Cordones, Morten Christensen, Robert W. Hartsock, Éva G. Bajnóczi, Villy Sundstöm, Kelly J. Gaffney
Publikováno v:
Kjær, K S, Kunnus, K, Harlang, T C B, Van Driel, T B, Ledbetter, K, Hartsock, R W, Reinhard, M E, Koroidov, S, Li, L, Laursen, M G, Biasin, E, Hansen, F B, Vester, P, Christensen, M, Haldrup, K, Nielsen, M M, Chabera, P, Liu, Y, Tatsuno, H, Timm, C, Uhlig, J, Sundstöm, V, Nemeth, Z, Szemes, D S, Bajnoczi, E, Vanko, G, Alonso-Mori, R, Glownia, J M, Nelson, S, Sikorski, M, Sokaras, D, Lemke, H T, Canton, S E, Warnmark, K, Persson, P, Cordones, A A & Gaffney, K J 2018, ' Solvent control of charge transfer excited state relaxation pathways in [Fe(2,2 '-bipyridine)(CN) 4 ] 2-', Physical Chemistry Chemical Physics, vol. 20, no. 6, pp. 4238-4249 . https://doi.org/10.1039/c7cp07838b
The excited state dynamics of solvated [Fe(bpy)(CN)4]2-, where bpy = 2,2'-bipyridine, show significant sensitivity to the solvent Lewis acidity. Using a combination of optical absorption and X-ray emission transient spectroscopies, we have previously
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::400fb5366d8c8b4a919b71a9f1cf01df
https://doi.org/10.1039/c7cp07838b
https://doi.org/10.1039/c7cp07838b