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  Structural Dynamics upon Photoexcitation in a Spin Crossover Crystal Probed with Femtosecond Electron Diffraction

Jiang, Y., Liu, L. C., Müller-Werkmeister, H., Lu, C., Zhang, D., Field, R. L., et al. (2017). Structural Dynamics upon Photoexcitation in a Spin Crossover Crystal Probed with Femtosecond Electron Diffraction. Angewandte Chemie, International Edition in English, 56(25), 7130-7134. doi:10.1002/anie.201702497.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-0CF8-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-47FD-2
Genre: Journal Article

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Jiang_et_al-2017-Angewandte_Chemie_International_Edition.pdf (Publisher version), 5MB
 
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 Creators:
Jiang, Yifeng1, Author              
Liu, Lai Chung2, Author
Müller-Werkmeister, Henrike1, Author              
Lu, Cheng2, Author
Zhang, Dongfang1, Author              
Field, Ryan L. 2, Author
Sarracini, Antoine2, Author
Moriena, Gustavo2, Author
Collet, Eric3, Author
Miller, R. J. Dwayne1, Author              
Affiliations:
1Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
2Departments of Chemistry and Physics, University of Toronto, Toronto, Canada, ou_persistent22              
3Université Rennes 1, CNRS, Institut de Physique de Rennes, UMR 6251, UBL, 3, Rennes, France, ou_persistent22              

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 Abstract: Photoexcitation of spin crossover (SCO) complexes can trigger extensive electronic spin transitions and transformation of molecular structure. However, the precise nature of the associated ultrafast structural dynamics remains elusive, especially in the solid state. Here, we studied a single-crystal SCO material with femtosecond electron diffraction (FED). The unique capability of FED allows us to directly probe atomic motions and to track ultrafast structural changes within a crystal lattice. By monitoring the time-dependent changes of the Bragg reflections, we observed the formation of a photoinduced structure similar to the thermally induced high-spin state. The data and refinement calculations indicate the global structural reorganization within 2.3 ps, as the metal–ligand bond distribution narrows during intramolecular vibrational energy redistribution (IVR) driving the intermolecular rearrangement. Three independent dynamical group are identified to model the structural dynamics upon photoinduced SCO.

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Language(s): eng - English
 Dates: 2017-03-082017-06-06
 Publication Status: Published online
 Pages: 5
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1002/anie.201702497
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Title: Angewandte Chemie, International Edition in English
  Other : Angewandte Chemie International Edition in English
  Other : Angew. Chem., Int. Ed. Engl.
  Other : Angew. Chem. Int. Ed. Engl.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: 5 Volume / Issue: 56 (25) Sequence Number: - Start / End Page: 7130 - 7134 Identifier: ISSN: 0570-0833
CoNE: /journals/resource/0570-0833