Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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Naji, M.
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Kunnus, Kristjan

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (22/22 displayed)

  • 2024Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering.2citations
  • 2024Observation of a Picosecond Light-Induced Spin Transition in Polymeric Nanorods.7citations
  • 2024Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering2citations
  • 2023Ferricyanide photo-aquation pathway revealed by combined femtosecond Kβ main line and valence-to-core x-ray emission spectroscopy12citations
  • 2023Ferricyanide photo-aquation pathway revealed by combined femtosecond Kβ main line and valence-to-core x-ray emission spectroscopy.12citations
  • 2021Reduction of Electron Repulsion in Highly Covalent Fe-Amido Complexes Counteracts the Impact of a Weak Ligand Field on Excited-State Ordering.41citations
  • 2021Short-lived metal-centered excited state initiates iron-methionine photodissociation in ferrous cytochrome c.23citations
  • 2021Revealing the bonding of solvated Ru complexes with valence-to-core resonant inelastic X-ray scattering.25citations
  • 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering.102citations
  • 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering.102citations
  • 2020Excited state charge distribution and bond expansion of ferrous complexes observed with femtosecond valence-to-core x-ray emission spectroscopy.17citations
  • 2020Origin of core-to-core x-ray emission spectroscopy sensitivity to structural dynamics20citations
  • 2020Hot branching dynamics in a light‐harvesting iron carbene complex revealed by ultrafast x‐ray emission spectroscopy16citations
  • 2020Hot branching dynamics in a light‐harvesting iron carbene complex revealed by ultrafast x‐ray emission spectroscopy54citations
  • 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering102citations
  • 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering102citations
  • 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering102citations
  • 2020Origin of core-to-core x-ray emission spectroscopy sensitivity to structural dynamics.20citations
  • 2019Finding intersections between electronic excited state potential energy surfaces with simultaneous ultrafast X-ray scattering and spectroscopy.110citations
  • 2019Finding intersections between electronic excited state potential energy surfaces with simultaneous ultrafast X-ray scattering and spectroscopy110citations
  • 2019Hot Branching Dynamics in a Light-Harvesting Iron Carbene Complex Revealed by Ultrafast X-ray Emission Spectroscopy.54citations
  • 2017Metalloprotein entatic control of ligand-metal bonds quantified by ultrafast x-ray spectroscopycitations

Places of action

Chart of shared publication
Zederkof, Diana Bregenholt
3 / 3 shared
Hartsock, Robert W.
12 / 17 shared
Ougaard Dohn, Asmus
3 / 3 shared
Nelson, Silke
16 / 17 shared
Raj, Sumana L.
2 / 3 shared
Pedersen, Kasper S.
2 / 6 shared
Mo Ller, Klaus Braagaard
1 / 1 shared
Gaffney, Kelly J.
18 / 27 shared
Van Driel, Tim B.
8 / 14 shared
Biasin, Elisa
18 / 22 shared
Jonsson, Hannes
1 / 1 shared
Lenzen, Philipp
2 / 2 shared
Robinson, Joseph S.
2 / 7 shared
Haldrup, Kristoffer
13 / 14 shared
Forbes, Ruaridh
2 / 2 shared
Haubro, Morten
2 / 2 shared
Powers-Riggs, Natalia E.
2 / 2 shared
Chollet, Matthieu
4 / 11 shared
Tveiten, Dagrun K.
1 / 1 shared
Levi, Gianluca
2 / 2 shared
Birgisson, Benedikt O.
2 / 2 shared
Nielsen, Martin Meedom
5 / 25 shared
Sokaras, Dimosthenis
17 / 43 shared
Ledbetter, Kathryn
6 / 6 shared
Driel, Tim Brandt Van
1 / 2 shared
Borkiewicz, Olaf J.
1 / 5 shared
Cordones, Amy A.
5 / 7 shared
Cammarata, Marco
1 / 4 shared
Collet, Eric
1 / 16 shared
Reinhard, Marco
7 / 8 shared
Kozina, Michael
1 / 2 shared
Alonso-Mori, Roberto
17 / 42 shared
Lorenc, Maciej
1 / 4 shared
Moller, Klaus Braagaard
1 / 1 shared
Jónsson, Hannes
1 / 3 shared
Natan, Adi
1 / 1 shared
Tveiten, Dagrún K. V.
1 / 1 shared
Kroll, Thomas
5 / 26 shared
Van Driel, Tim
2 / 2 shared
Weninger, Clemens
4 / 12 shared
Guo, Meiyuan
5 / 6 shared
Qureshi, Muhammad
2 / 2 shared
Glownia, James M.
12 / 16 shared
Britz, Alexander
3 / 8 shared
Gallo, Alessandro
3 / 12 shared
Robinson, Joseph
2 / 2 shared
Garcia-Esparza, Angel T.
3 / 3 shared
Weng, Tsu Chien
1 / 3 shared
Driel, Tim Van
2 / 2 shared
Weng, Tsu-Chien C.
1 / 1 shared
Braun, Jason D.
1 / 1 shared
Burda, Clemens
1 / 1 shared
Larsen, Christopher B.
1 / 1 shared
Kolodziej, Charles
1 / 2 shared
Herbert, David E.
1 / 2 shared
Lozada, Issiah B.
1 / 2 shared
Driel, Tim Brandt
1 / 1 shared
Hodgson, Keith O.
2 / 8 shared
Hedman, Britt
2 / 9 shared
Hadt, Ryan G.
2 / 7 shared
Kjaer, Kasper S.
3 / 8 shared
Bergmann, Uwe
2 / 22 shared
Gee, Leland B.
1 / 11 shared
Solomon, Edward I.
2 / 21 shared
Reinhard, Marco E.
8 / 9 shared
Mara, Michael W.
2 / 4 shared
Lim, Hyeongtaek
2 / 5 shared
Govind, Niranjan
1 / 4 shared
Nowak, Stanislaw H.
1 / 1 shared
Abraham, Baxter
1 / 1 shared
Nascimento, Daniel R.
1 / 1 shared
Schoenlein, Robert W.
1 / 3 shared
Khalil, Munira
1 / 5 shared
Lundberg, Marcus
7 / 12 shared
Delcey, Mickaël
6 / 6 shared
Gaffney, Kelly
3 / 4 shared
Vacher, Morgane
7 / 9 shared
Zederkof, Diana B.
1 / 1 shared
Driel, Tim B. Van
3 / 4 shared
Delcey, Mickael G.
1 / 1 shared
Reinhard, Marco Eli
1 / 1 shared
Chart of publication period
2024
2023
2021
2020
2019
2017

Co-Authors (by relevance)

  • Zederkof, Diana Bregenholt
  • Hartsock, Robert W.
  • Ougaard Dohn, Asmus
  • Nelson, Silke
  • Raj, Sumana L.
  • Pedersen, Kasper S.
  • Mo Ller, Klaus Braagaard
  • Gaffney, Kelly J.
  • Van Driel, Tim B.
  • Biasin, Elisa
  • Jonsson, Hannes
  • Lenzen, Philipp
  • Robinson, Joseph S.
  • Haldrup, Kristoffer
  • Forbes, Ruaridh
  • Haubro, Morten
  • Powers-Riggs, Natalia E.
  • Chollet, Matthieu
  • Tveiten, Dagrun K.
  • Levi, Gianluca
  • Birgisson, Benedikt O.
  • Nielsen, Martin Meedom
  • Sokaras, Dimosthenis
  • Ledbetter, Kathryn
  • Driel, Tim Brandt Van
  • Borkiewicz, Olaf J.
  • Cordones, Amy A.
  • Cammarata, Marco
  • Collet, Eric
  • Reinhard, Marco
  • Kozina, Michael
  • Alonso-Mori, Roberto
  • Lorenc, Maciej
  • Moller, Klaus Braagaard
  • Jónsson, Hannes
  • Natan, Adi
  • Tveiten, Dagrún K. V.
  • Kroll, Thomas
  • Van Driel, Tim
  • Weninger, Clemens
  • Guo, Meiyuan
  • Qureshi, Muhammad
  • Glownia, James M.
  • Britz, Alexander
  • Gallo, Alessandro
  • Robinson, Joseph
  • Garcia-Esparza, Angel T.
  • Weng, Tsu Chien
  • Driel, Tim Van
  • Weng, Tsu-Chien C.
  • Braun, Jason D.
  • Burda, Clemens
  • Larsen, Christopher B.
  • Kolodziej, Charles
  • Herbert, David E.
  • Lozada, Issiah B.
  • Driel, Tim Brandt
  • Hodgson, Keith O.
  • Hedman, Britt
  • Hadt, Ryan G.
  • Kjaer, Kasper S.
  • Bergmann, Uwe
  • Gee, Leland B.
  • Solomon, Edward I.
  • Reinhard, Marco E.
  • Mara, Michael W.
  • Lim, Hyeongtaek
  • Govind, Niranjan
  • Nowak, Stanislaw H.
  • Abraham, Baxter
  • Nascimento, Daniel R.
  • Schoenlein, Robert W.
  • Khalil, Munira
  • Lundberg, Marcus
  • Delcey, Mickaël
  • Gaffney, Kelly
  • Vacher, Morgane
  • Zederkof, Diana B.
  • Driel, Tim B. Van
  • Delcey, Mickael G.
  • Reinhard, Marco Eli
OrganizationsLocationPeople

article

Hot Branching Dynamics in a Light-Harvesting Iron Carbene Complex Revealed by Ultrafast X-ray Emission Spectroscopy.

  • Canton, Sophie E.
  • Németh, Zoltán
  • Nelson, Silke
  • Hansen, Frederik B.
  • Sikorski, Marcin
  • Bajnóczi, Éva
  • Kjaer, Kasper S.
  • Dohn, Asmus O.
  • Møller, Klaus B.
  • Gordivska, Olga
  • Chàbera, Pavel
  • Uhlig, Jens
  • Tatsuno, Hideyuki
  • Prakash, Om
  • Vankó, György
  • Driel, Tim B. Van
  • Laursen, Mads G.
  • Reinhard, Marco
  • Hartsock, Robert W.
  • Szemes, Dorottya Sárosiné
  • Sokaras, Dimosthenis
  • Nielsen, Martin M.
  • Li, Lin
  • Gaffney, Kelly J.
  • Harlang, Tobias C.
  • Biasin, Elisa
  • Vester, Peter
  • Guo, Meiyuan
  • Kunnus, Kristjan
  • Christensen, Morten
  • Glownia, James M.
  • Wärnmark, Kenneth
  • Haldrup, Kristoffer
  • Koroidov, Sergey
  • Lemke, Henrik T.
  • Timm, Cornelia
  • Fredin, Lisa A.
  • Cordones, Amy A.
  • Sundström, Villy
  • Liu, Yizhu
  • Persson, Petter
  • Alonso-Mori, Roberto
Abstract

Iron N-heterocyclic carbene (NHC) complexes have received a great deal of attention recently because of their growing potential as light sensitizers or photocatalysts. We present a sub-ps X-ray spectroscopy study of an FeII NHC complex that identifies and quantifies the states involved in the deactivation cascade after light absorption. Excited molecules relax back to the ground state along two pathways: After population of a hot 3 MLCT state, from the initially excited 1 MLCT state, 30 % of the molecules undergo ultrafast (150 fs) relaxation to the 3 MC state, in competition with vibrational relaxation and cooling to the relaxed 3 MLCT state. The relaxed 3 MLCT state then decays much more slowly (7.6 ps) to the 3 MC state. The 3 MC state is rapidly (2.2 ps) deactivated to the ground state. The 5 MC state is not involved in the deactivation pathway. The ultrafast partial deactivation of the 3 MLCT state constitutes a loss channel from the point of view of photochemical efficiency and highlights the necessity to screen transition-metal complexes for similar ultrafast decays to optimize photochemical performance.

Topics
  • impedance spectroscopy
  • iron
  • X-ray emission spectroscopy