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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Nielsen, Martin Meedom
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2024Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering.citations
- 2024Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scatteringcitations
- 2020Hot branching dynamics in a light‐harvesting iron carbene complex revealed by ultrafast x‐ray emission spectroscopycitations
- 2020Hot branching dynamics in a light‐harvesting iron carbene complex revealed by ultrafast x‐ray emission spectroscopycitations
- 2020Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scatteringcitations
- 2019Simulation of ultrafast excited-state dynamics and elastic x-ray scattering by quantum wavepacket dynamicscitations
- 2017Ligand manipulation of charge transfer excited state relaxation and spin crossover in [Fe(2,2′-bipyridine) 2 (CN) 2 ]citations
- 2017Unique Crystal Orientation of Poly(ethylene oxide) Thin Films by Crystallization Using a Thermal Gradientcitations
- 2016Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scatteringcitations
- 2016The negative piezoelectric effect of the ferroelectric polymer poly(vinylidene fluoride)citations
- 2016The negative piezoelectric effect of the ferroelectric polymer poly(vinylidene fluoride)citations
- 2008Organic thin film transistors with polymer brush gate dielectrics synthesized by atom transfer radical polymerizationcitations
- 2007Nanoscale structural characterization of Mg(NH 3 ) 6 Cl 2 during NH 3 desorption:An in situ small angle X-ray scattering studycitations
- 2007Nanoscale structural characterization of Mg(NH3)6Cl2 during NH3 desorptioncitations
- 2006Enhancement of charge-transport characteristics in polymeric films using polymer brushescitations
- 2006Molecular-weight dependence of interchain polaron delocalization and exciton bandwidth in high-mobility conjugated polymerscitations
- 2006Designing solution-processable air-stable liquid crystalline crosslinkable semiconductorscitations
- 2006Activation of a Cu/ZnO catalyst for methanol synthesiscitations
- 2005Structure of zone-cast HBC-C 1 2 H 2 5 filmscitations
- 2005Effects of packing structure on the optoelectronic and charge transport properties in poly(9,9-di-n-octylfluorene-alt-benzothiadiazole)citations
- 2005Effects of Packing Structure on the Optoelectronic and Charge Transport Properties in Poly(9,9-di- n -octylfluorene- alt -benzothiadiazole)citations
- 2005Structure of zone-cast HBC-C12H25 filmscitations
- 2004Electronic Conductivity of Polypyrrole−Dodecyl Benzene Sulfonate Complexescitations
- 2003Induced alignment of a solution-cast discotic hexabenzocoronene derivative for electronic devices investigated by surface X-ray diffractioncitations
- 2000Micro-structure-mobility correlation in self-organised, conjugated polymer field-effect transistorscitations
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article
Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering.
Abstract
Dimeric complexes composed of d8 square planar metal centers and rigid bridging ligands provide model systems to understand the interplay between attractive dispersion forces and steric strain in order to assist the development of reliable methods to model metal dimer complexes more broadly. [Ir2 (dimen)4]2+ (dimen = para-diisocyanomenthane) presents a unique case study for such phenomena, as distortions of the optimal structure of a ligand with limited conformational flexibility counteract the attractive dispersive forces from the metal and ligand to yield a complex with two ground state deformational isomers. Here, we use ultrafast X-ray solution scattering (XSS) and optical transient absorption spectroscopy (OTAS) to reveal the nature of the equilibrium distribution and the exchange rate between the deformational isomers. The two ground state isomers have spectrally distinct electronic excitations that enable the selective excitation of one isomer or the other using a femtosecond duration pulse of visible light. We then track the dynamics of the nonequilibrium depletion of the electronic ground state population─often termed the ground state hole─with ultrafast XSS and OTAS, revealing a restoration of the ground state equilibrium in 2.3 ps. This combined experimental and theoretical study provides a critical test of various density functional approximations in the description of bridged d8-d8 metal complexes. The results show that density functional theory calculations can reproduce the primary experimental observations if dispersion interactions are added, and a hybrid functional, which includes exact exchange, is used.