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Volume 12
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10.3390/nano12101742
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Review

Dynamics of Spin Crossover Molecular Complexes

by
Thilini K. Ekanayaka
1,
Krishna Prasad Maity
2,
Bernard Doudin
2,* and
Peter A. Dowben
1,*
1
Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588, USA
2
Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg CNRS, UMR 7504, 23 Rue du Loess, BP 43, CEDEX 2, 67034 Strasbourg, France
*
Authors to whom correspondence should be addressed.
Nanomaterials 2022, 12(10), 1742; https://doi.org/10.3390/nano12101742
Submission received: 31 March 2022 / Revised: 9 May 2022 / Accepted: 16 May 2022 / Published: 19 May 2022
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Abstract

We review the current understanding of the time scale and mechanisms associated with the change in spin state in transition metal-based spin crossover (SCO) molecular complexes. Most time resolved experiments, performed by optical techniques, rely on the intrinsic light-induced switching properties of this class of materials. The optically driven spin state transition can be mediated by a rich interplay of complexities including intermediate states in the spin state transition process, as well as intermolecular interactions, temperature, and strain. We emphasize here that the size reduction down to the nanoscale is essential for designing SCO systems that switch quickly as well as possibly retaining the memory of the light-driven state. We argue that SCO nano-sized systems are the key to device applications where the “write” speed is an important criterion.
Keywords: spin crossover molecules; intermediate excited states; spin state switching speed; time domain laser spectroscopy; pump and probe spin crossover molecules; intermediate excited states; spin state switching speed; time domain laser spectroscopy; pump and probe

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MDPI and ACS Style

Ekanayaka, T.K.; Maity, K.P.; Doudin, B.; Dowben, P.A. Dynamics of Spin Crossover Molecular Complexes. Nanomaterials 2022, 12, 1742. https://doi.org/10.3390/nano12101742

AMA Style

Ekanayaka TK, Maity KP, Doudin B, Dowben PA. Dynamics of Spin Crossover Molecular Complexes. Nanomaterials. 2022; 12(10):1742. https://doi.org/10.3390/nano12101742

Chicago/Turabian Style

Ekanayaka, Thilini K., Krishna Prasad Maity, Bernard Doudin, and Peter A. Dowben. 2022. "Dynamics of Spin Crossover Molecular Complexes" Nanomaterials 12, no. 10: 1742. https://doi.org/10.3390/nano12101742

APA Style

Ekanayaka, T. K., Maity, K. P., Doudin, B., & Dowben, P. A. (2022). Dynamics of Spin Crossover Molecular Complexes. Nanomaterials, 12(10), 1742. https://doi.org/10.3390/nano12101742

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