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Issue 38, 2016
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Cooperative elastic switching vs. laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

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Abstract

Spin-crossover crystals show multi-step responses to femtosecond light excitation. The local molecular photo-switching from low to high spin states occurs on the sub-picosecond timescale. It is followed by additional conversion due to elastic (ns) and thermal (μs) effects. In [Fe(phen)2(NCS)2] crystals discussed herein, the thermal switching can be made unobtrusive for the investigation of cooperative elastic switching. We evidence a cooperative transformation induced by lattice expansion through elastic coupling between molecules in the crystal, where up to 3 molecules are transformed per photon.

Graphical abstract: Cooperative elastic switching vs. laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

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Publication details

The article was received on 23 Mar 2016, accepted on 29 Apr 2016 and first published on 29 Apr 2016


Article type: Paper
DOI: 10.1039/C6CE00659K
Citation: CrystEngComm, 2016,18, 7269-7275

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    Cooperative elastic switching vs. laser heating in [Fe(phen)2(NCS)2] spin-crossover crystals excited by a laser pulse

    R. Bertoni, M. Lorenc, T. Graber, R. Henning, K. Moffat, J.-F. Létard and E. Collet, CrystEngComm, 2016, 18, 7269
    DOI: 10.1039/C6CE00659K

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