Journal ArticleDOI
Photoinduced Magnetization of a Cobalt-Iron Cyanide
TLDR
The magnetization in the ferrimagnetic region below 16 kelvin was substantially increased after illumination and could be restored almost to its original level by thermal treatment and these effects are thought to be caused by an internal photochemical redox reaction.Abstract:
Photoinduced magnetization was observed in a Prussian blue analog, K0.2Co1.4- [Fe(CN)6]·6.9H2O. An increase in the critical temperature from 16 to 19 kelvin was observed as a result of red light illumination. Moreover, the magnetization in the ferrimagnetic region below 16 kelvin was substantially increased after illumination and could be restored almost to its original level by thermal treatment. These effects are thought to be caused by an internal photochemical redox reaction. Furthermore, blue light illumination could be used to partly remove the enhancement of the magnetization. Such control over magnetic properties by optical stimuli may have application in magneto-optical devices.read more
Citations
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Old materials with new tricks: multifunctional open-framework materials.
TL;DR: This critical review provides an up-to-date survey to this new generation of multifunctional open-framework solids, classified into five different sections: magnetic, chiral, conducting, optical, and labile open-frameworks for sensing applications.
Journal ArticleDOI
Control of magnetic properties through external stimuli.
TL;DR: Most of the Review is devoted to the properties of valence-tautomeric compounds, molecular magnets, and spin-crossover complexes, which could find future application in memory devices or optical switches.
Journal ArticleDOI
Spin crossover phenomena in Fe(II) complexes
TL;DR: The behavior of spin crossover compounds is among the most striking and fascinating shown by relatively simple molecular species as discussed by the authors, and a review aims to draw attention to the various ways in which spin crossover phenomena are manifested in iron(II) complexes, to offer some rationalisation for these, and to highlight their possible applications.
Journal ArticleDOI
Molecules to build solids : high tc molecule-based magnets by design and recent revival of cyano complexes chemistry
Michel Verdaguer,Anne Bleuzen,Valérie Marvaud,Jacqueline Vaissermann,M. Seuleiman,Cédric Desplanches,Ariane Scuiller,Cyrille Train,Raquel Garde,G. Gelly,Claire Lomenech,I. Rosenman,P. Veillet,C. Cartier,C. Cartier,Françoise Villain,Françoise Villain +16 more
TL;DR: In this article, the use of a localized electron orbital model allowed the authors to push the Curie temperatures from 5.6 K to above room temperature in a vanadium-chromium Prussian blue analogue.
Journal ArticleDOI
Metal-organic frameworks as a tunable platform for designing functional molecular materials.
Cheng Wang,Demin Liu,Wenbin Lin +2 more
TL;DR: Through the combination of molecular synthesis and crystal engineering, MOFs present an unprecedented opportunity for the rational and precise design of functional materials.
References
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Journal ArticleDOI
Thermal and Optical Switching of Iron(II) Complexes
TL;DR: The light-induced excited spin state trapping (LIESST) as mentioned in this paper phenomenon is well understood within the theoretical context of radiationless transitions and applications of the LIESST effect in optical information technology can be envisaged.
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A room-temperature organometallic magnet based on Prussian blue
TL;DR: In this paper, a room-temperature organometallic magnet was synthesized by combining a hexa-cyanometalate [M(CN)6]q− with a Lewis acid Lp+.
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Organic and Organometallic Molecular Magnetic Materials—Designer Magnets
Joel S. Miller,Arthur J. Epstein +1 more
TL;DR: In this paper, a tutorial of typical magnetic behavior of molecular materials is presented and three distinct models (intramolecular spin coupling through orthogonal orbitals in the same spatial region within a molecule/ion, intermolecular spins coupling through pairwise configuration interaction between spin-containing moieties, and dipole-dipole, through-space interactions) which enable the design of new molecular-based magnetic materials are discussed.
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Light-induced excited spin state trapping in a transition-metal complex: The hexa-1-propyltetrazole-iron (II) tetrafluoroborate spin-crossover system
TL;DR: In this paper, a light-induced conversion of the low-spin state (1A1g) to the high-spin (HS) state (5T2g) in the spin-crossover iron (II) complex [Fe(ptz)6] (BF4)2, where ptz = 1-propyltetrazole.