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Issue 2, 2014
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High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

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Abstract

The thermal and photo-induced switching properties of the recently published molecular spin crossover complex [Fe(H4L)2](ClO4)2·H2O·2(CH3)2CO (1) have been investigated in detail through Raman spectroscopy. Magnetometric and single crystal X-ray diffraction kinetic studies within the hysteresis loop have proven its metastable character, which allowed establishing the shape of the true, quasi-static hysteresis loop. This is related to the proximity of the temperatures of the thermal high to low spin SCO (T1/2↓) to those of the relaxation of the thermally or photo-generated metastable states (T(TIESST) and T(LIESST), respectively). Green light irradiation within the hysteresis loop results in a complete low to high spin photo-switch. In addition, the SCO of 1 at room temperature can be induced by applying pressure, as followed by Raman spectroscopy.

Graphical abstract: High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

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Publication details

The article was received on 31 Jul 2013, accepted on 02 Oct 2013 and first published on 03 Oct 2013


Article type: Paper
DOI: 10.1039/C3DT52075G
Citation: Dalton Trans., 2014,43, 729-737
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    High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

    G. A. Craig, J. S. Costa, O. Roubeau, S. J. Teat, H. J. Shepherd, M. Lopes, G. Molnár, A. Bousseksou and G. Aromí, Dalton Trans., 2014, 43, 729
    DOI: 10.1039/C3DT52075G

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