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

Craig, G.A., Costa, J.S., Roubeau, O., Teat, S.J., Shepherd, H.J., Lopes, M., Molnár, G., Bousseksou, A., Aromí, G. (2014) High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material. Dalton Transactions, 43 (2). pp. 729-737. ISSN 14779226 (ISSN). (doi:10.1039/c3dt52075g) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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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 (T1/2â??) 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. © 2014 The Royal Society of Chemistry.

Item Type: Article
DOI/Identification number: 10.1039/c3dt52075g
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Dalton Trans. [Field not mapped to EPrints] AD - Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain [Field not mapped to EPrints] AD - Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC, Universidad de Zaragoza, Plaza San Francisco s/n, 50009 Zaragoza, Spain [Field not mapped to EPrints] AD - Advanced Light Source, Berkeley Laboratory, 1 Cyclotron Road, Berkeley CA 94720, United States [Field not mapped to EPrints] AD - Laboratoire de Chimie de Coordination, CNRS UPR-8241, Université de Toulouse, UPS, INP, Toulouse, France [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Applying pressure, High temperature, Meta-stable state, Pressure-induced transitions, Quasi-static hysteresis loop, Room temperature, Single crystal x-ray diffraction, Switching properties, Raman spectroscopy, X ray diffraction, Hysteresis loops
Subjects: Q Science > QD Chemistry > QD473 Physical properties in relation to structure
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 21 Oct 2015 16:14 UTC
Last Modified: 23 Jan 2020 04:10 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50815 (The current URI for this page, for reference purposes)
Shepherd, H.J.: https://orcid.org/0000-0003-0832-4475
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