Construction of an artificial ferrimagnetic lattice by lithium ion insertion into a neutral donor/acceptor metal-organic framework
(2016) Angewandte Chemie (International Edition) — Vol. 55, n° 17, p. 5238-5242 (2016)
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- Abstract
- Construction of a molecular system in which the magnetic lattice exhibits long-range order is one of the fundamental goals in materials science. In this study, we demonstrate the artificial construction of a ferrimagnetic lattice by doping electrons into acceptor sites of a neutral donor/acceptor metal-organic framework (D/A-MOF). This doping was achieved by the insertion of Li-ions into the D/A-MOF, which was used as the cathode of a Li-ion battery cell. The neutral D/A-MOF is a layered system composed of a carboxylate-bridged paddlewheel-type diruthenium(II,II) complex as the donor and a TCNQ derivative as the acceptor. The ground state of the neutral form was a magnetically disordered paramagnetic state. Upon discharge of the cell, spontaneous magnetization was induced; the transition temperature was variable. The stability of the magnetically ordered lattice depended on the equilibrium electric potential of the D/A-MOF cathode, which reflected the electron-filling level. A ferrimagnetic order lattice has been artificially constructed by electron doping by lithium ion insertion from a magnetically disordered ground state in a neutral donor/acceptor metal-organic framework (D/A-MOF). The stability of the magnetically ordered lattice depends on the equilibrium potential of the D/A-MOF cathode. The results suggest a new strategy and direction for the design of molecule-based magnets.
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Taniguchi, K., Narushima, K., Mahin, J., Kosaka, W., & Miyasaka, H. (2016). Construction of an artificial ferrimagnetic lattice by lithium ion insertion into a neutral donor/acceptor metal-organic framework. Angewandte Chemie (International Edition), 55(17), 5238-5242. https://doi.org/10.1002/anie.201601672 (Original work published 2016)