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Open AccessFeature PaperArticle

Mapping Magnetic Properties and Relaxation in Vanadium(IV) Complexes with Lanthanides by Electron Paramagnetic Resonance

1
International Tomography Center SB RAS, 630090 Novosibirsk, Russia
2
Novosibirsk State University, 630090 Novosibirsk, Russia
3
N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Science, 119991 Moscow, Russia
4
Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Dawid Pinkowicz and Robert Podgajny
Molecules 2019, 24(24), 4582; https://doi.org/10.3390/molecules24244582
Received: 13 November 2019 / Revised: 29 November 2019 / Accepted: 11 December 2019 / Published: 14 December 2019
(This article belongs to the Special Issue Functional Magnetic Molecular Materials)
Vanadium(IV) complexes are actively studied as potential candidates for molecular spin qubits operating at room temperatures. They have longer electron spin decoherence times than many other transition ions, being the key property for applications in quantum information processing. In most cases reported to date, the molecular complexes were optimized through the design for this purpose. In this work, we investigate the relaxation properties of vanadium(IV) ions incorporated in complexes with lanthanides using electron paramagnetic resonance (EPR). In all cases, the VO6 moieties with no nuclear spins in the first coordination sphere are addressed. We develop and implement the approaches for facile diagnostics of relaxation characteristics in individual VO6 moieties of such compounds. Remarkably, the estimated relaxation times are found to be close to those of other vanadium-based qubits obtained previously. In the future, a synergistic combination of qubit-friendly properties of vanadium ions with single-molecule magnetism and luminescence of lanthanides can be pursued to realize new functionalities of such materials. View Full-Text
Keywords: vanadium(IV) ions; EPR; relaxation times vanadium(IV) ions; EPR; relaxation times
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Kurganskii, I.V.; Bazhina, E.S.; Korlyukov, A.A.; Babeshkin, K.A.; Efimov, N.N.; Kiskin, M.A.; Veber, S.L.; Sidorov, A.A.; Eremenko, I.L.; Fedin, M.V. Mapping Magnetic Properties and Relaxation in Vanadium(IV) Complexes with Lanthanides by Electron Paramagnetic Resonance. Molecules 2019, 24, 4582.

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