Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction

Collet, Eric; Moisan, Nicolas; Baldé, Chérif; Bertoni, Roman; Trzop, Elzbieta; Laulhé, Claire; Lorenc, Maciej; Servol, Marina; Cailleau, Hervé; Tissot, Antoine; Boillot, Marie-Laure; Graber, Timothy; Henning, Robert; Coppens, Philip; Buron-Le Cointe, Marylise

doi:10.1039/C2CP23587K

Title: Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction

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Abstract

We report the spin state photo-switching dynamics in two polymorphs of a spin-crossover molecular complex triggered by a femtosecond laser flash, as determined by combining femtosecond optical pump-probe spectroscopy and picosecond X-ray diffraction techniques. The light-driven transformations in the two polymorphs are compared. Combining both techniques and tracking how the X-ray data correlate with optical signals allow understanding of how electronic and structural degrees of freedom couple and play their role when the switchable molecules interact in the active crystalline medium. The study sheds light on crossing the border between femtochemistry at the molecular scale and femtoswitching at the material scale.

Authors:

Collet, Eric; Moisan, Nicolas; Baldé, Chérif; Bertoni, Roman; Trzop, Elzbieta; Laulhé, Claire; Lorenc, Maciej; Servol, Marina; Cailleau, Hervé; Tissot, Antoine; Boillot, Marie-Laure; Graber, Timothy; Henning, Robert; Coppens, Philip; Buron-Le Cointe, Marylise ^[1]

CNRS-UMR

Publication Date:: Wed Feb 20 00:00:00 EST 2013

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Org.:: FOREIGNNSF

OSTI Identifier:: 1038622

Resource Type:: Journal Article

Journal Name:: Phys. Chem. Chem. Phys.

Additional Journal Information:: Journal Volume: 14; Journal Issue: (18) ; 2012; Journal ID: ISSN 1463-9076

Country of Publication:: United States

Language:: ENGLISH

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DEGREES OF FREEDOM; LASERS; SPECTROSCOPY; SPIN; TRANSFORMATIONS; X-RAY DIFFRACTION

Citation Formats


                    Collet, Eric, Moisan, Nicolas, Baldé, Chérif, Bertoni, Roman, Trzop, Elzbieta, Laulhé, Claire, Lorenc, Maciej, Servol, Marina, Cailleau, Hervé, Tissot, Antoine, Boillot, Marie-Laure, Graber, Timothy, Henning, Robert, Coppens, Philip, and Buron-Le Cointe, Marylise. Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction.  United States: N. p., 2013. 
        Web.  doi:10.1039/C2CP23587K.

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                    Collet, Eric, Moisan, Nicolas, Baldé, Chérif, Bertoni, Roman, Trzop, Elzbieta, Laulhé, Claire, Lorenc, Maciej, Servol, Marina, Cailleau, Hervé, Tissot, Antoine, Boillot, Marie-Laure, Graber, Timothy, Henning, Robert, Coppens, Philip, & Buron-Le Cointe, Marylise. Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction.  United States.  https://doi.org/10.1039/C2CP23587K

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                    Collet, Eric, Moisan, Nicolas, Baldé, Chérif, Bertoni, Roman, Trzop, Elzbieta, Laulhé, Claire, Lorenc, Maciej, Servol, Marina, Cailleau, Hervé, Tissot, Antoine, Boillot, Marie-Laure, Graber, Timothy, Henning, Robert, Coppens, Philip, and Buron-Le Cointe, Marylise. 2013.  
        "Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction".  United States.  https://doi.org/10.1039/C2CP23587K.

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@article{osti_1038622,

  title        = {Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction},

  author       = {Collet, Eric and Moisan, Nicolas and Baldé, Chérif and Bertoni, Roman and Trzop, Elzbieta and Laulhé, Claire and Lorenc, Maciej and Servol, Marina and Cailleau, Hervé and Tissot, Antoine and Boillot, Marie-Laure and Graber, Timothy and Henning, Robert and Coppens, Philip and Buron-Le Cointe, Marylise},

  abstractNote = {We report the spin state photo-switching dynamics in two polymorphs of a spin-crossover molecular complex triggered by a femtosecond laser flash, as determined by combining femtosecond optical pump-probe spectroscopy and picosecond X-ray diffraction techniques. The light-driven transformations in the two polymorphs are compared. Combining both techniques and tracking how the X-ray data correlate with optical signals allow understanding of how electronic and structural degrees of freedom couple and play their role when the switchable molecules interact in the active crystalline medium. The study sheds light on crossing the border between femtochemistry at the molecular scale and femtoswitching at the material scale.},

  doi          = {10.1039/C2CP23587K},

  url          = {https://www.osti.gov/biblio/1038622},
  journal      = {Phys. Chem. Chem. Phys.},

  issn         = {1463-9076},

  number       = (18) ; 2012,

  volume       = 14,

  place        = {United States},

  year         = {Wed Feb 20 00:00:00 EST 2013},

  month        = {Wed Feb 20 00:00:00 EST 2013}

}

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