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Updated: Aug 5, 2026
Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Energy Transfer-Mediated Magnetoluminescence of an Octahedral MnII Complex Ligated With Bis(Diphenylphosphino)Methane
Asato Mizuno1,2,3,4, Takuto Mibu1,2, Ryota Matsuoka1,2
1Division of Frontier Materials Science, Department of Materials Engineering Science, Graduate School of Engineering Science, The University of Osaka, Toyonaka, Osaka, Japan.
Abstract:
Magnetic-field effect on luminescence (MagLum) has attracted considerable attention owing to fundamental understanding of spin-luminescence correlations as well as its potential application to functional magneto-optical devices. Recent studies have revealed that open-shell luminescent molecular systems, including organic radicals and lanthanide complexes, exhibit MagLum. However, the underlying mechanisms in such molecular systems are largely restricted to those based on simple Zeeman splitting of spin sublevels. Here, we report pronounced MagLum behaviors of an octahedral MnII complex ligated with bis(diphenylphosphino)methane dioxide ([MnIIL3](BF4)2) doped into the corresponding ZnII complex ([ZnIIL3](BF4)2) solids at various concentrations (1, 5, 10, 30 wt%). We demonstrate that the magnetic-field modulation of the energy-transfer efficiency from the ZnII complex to the MnII complex is a key process governing the MagLum behaviors. This mechanism is distinctly different from those for organic radicals and lanthanide complexes, establishing a novel strategy for realizing MagLum. Our findings extend the scope of magnetic field-responsive luminescence materials to paramagnetic transition metal complexes, thereby opening new avenues for the design and application of paramagnetic luminescent compounds in future photo- and spin-based technologies.
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