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Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate
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Divalent Thulium Crown Ether Complexes with Field-Induced Slow Magnetic Relaxation
Mathieu Xémard1, Marie Cordier1, Florian Molton2
1LCM, CNRS , Ecole Polytechnique , Université Paris-Saclay, Route de Saclay , 91128 Palaiseau , France.
Inorganic Chemistry
|February 7, 2019
Summary
Researchers developed novel divalent lanthanide compounds exhibiting slow magnetic relaxation. This breakthrough expands the design of single-molecule magnets for applications in molecular spintronics and quantum computing.
Area of Science:
- Coordination Chemistry
- Magnetism
- Materials Science
Background:
- Single-molecule magnets (SMMs) are crucial for molecular spintronics and quantum computing.
- Lanthanide ions are promising for SMMs due to their electrostatic bonding model.
- Current SMM design primarily uses trivalent lanthanides, neglecting redox properties.
Purpose of the Study:
- To explore divalent lanthanide compounds for slow magnetic relaxation.
- To design and synthesize novel divalent lanthanide complexes.
- To investigate the magnetic properties of these new compounds.
Main Methods:
- Rational design and synthesis of two Tm(II) complexes with 18-crown-6 ligand.
- Characterization using emission and Electron Paramagnetic Resonance (EPR) spectroscopy.
- Magnetic property measurements to assess slow magnetic relaxation.
Main Results:
- Successful synthesis of two divalent thulium (TmII) complexes.
- Demonstrated field-induced slow magnetic relaxation in moderate magnetic fields.
- Emission and EPR data confirmed the ground state properties, optimizing magnetic anisotropy.
Conclusions:
- Divalent lanthanide compounds can exhibit slow magnetic relaxation, challenging previous design paradigms.
- This work opens new avenues for designing advanced magnetic materials by utilizing lanthanide redox states.
- The developed Tm(II) complexes show potential for future spintronic and quantum computing applications.
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