Recent advances of dinuclear dysprosium-based single-molecule magnets: from mechanisms to application

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(37), P. 14754 - 14773

Published: Jan. 1, 2024

This review focused on the research of Dy 2 -SMMs for years and took advantage intricate relaxation mechanisms, manipulating strategies synthesizing high-performance to provide insights design -SMMs.

Language: Английский

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Trinuclear Zn^II-Ln^III Complexes: Single-Ion Magnet Behavior in the Zn₂Dy Analogue

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

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Structures and Single-Molecule Magnet Behavior of Dy₃ and Dy₄ Clusters Constructed by Different Dysprosium(III) Salts

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(34), P. 15667 - 15678

Published: Aug. 5, 2024

Using the Schiff base ligand H2L-pyra (N′-(2-hydroxybenzoyl)pyrazine-2-carbohydrazonamide) with multiple dentate sites, trinuclear DyIII-based complex [Dy3(HL-pyra)2(L-pyra)2(CH3COO)3]·2H2O (1) was synthesized. By analyzing fragmented assembly process and fine-tuning bridging anions, [Dy4(HL-pyra)2(L-pyra)4(NO3)2(H2O)2]·8H2O (2) different nuclear numbers successfully Magnetic studies demonstrated that 1 did not exhibit magnetic relaxation behavior under external field; however, 2 exhibited zero-field single-molecule an effective energy barrier (Ueff) of 197.44 K. This is attributed to improved anisotropy single ion after normalization crystal structure, thus realizing molecular switching. Moreover, dilution analysis weak interaction between metal ions inhibited occurrence quantum tunneling magnetization (QTM), resulting in high-performance magnet (SMM) behavior. The reasons for difference these two complexes were analyzed using ab initio calculation magneto-structural correlations. study provides a reasonable prediction ideal configuration approximately parallelogram SMMs, offering approach synthesizing Dy4 excellent properties.

Language: Английский

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Solvent-Induced Magnetic Properties of a Series of Dy-Based MOFs from Two Different Precursor Complexes

Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(22), P. 9692 - 9700

Published: Nov. 4, 2024

It is still challenging for Dy-MOFs to modulate the single-molecule magnet (SMM) behavior through guest molecules. with different molecules, secondary building units, and linkers were synthesized by precursors bridging carboxylic acid ligands, magnetic properties of regulated These differentiated are [Dy2(C9H4Cl2NO)2(L1)2(H2O)(DMA)]n·DMA (MOF-3, L1 = terephthalate), [Dy(C9H4Cl2NO)2(L1)(DMSO)(H2O)]n (MOF-4), [Dy2(C9H4Br2NO)2(L1)2(H2O)(DMA)]n·DMA (MOF-5), [Dy(C9H4Cl2NO)2(L2)(H2O)]n·DMA (MOF-6, L2 isophthalate), [Dy(C9H4Cl2NO)2(L2)(H2O)]n·DMF (MOF-7), [Dy(C9H4Br2NO)2(L2)(H2O)]n·DMA (MOF-8). The single-crystal X-ray diffraction showed that MOF-3 MOF-5 two-dimensional MOFs square holes. MOF-4 a MOF formed hydrogen–halogen bonds, MOF-6, MOF-7, MOF-8 one-dimensional chains. test results show MOF-4, SMM under zero field, exhibit field-induced behavior. In effective energy bases 37.09, 19.56, 15.73 K, relaxation times τ0 4.66 × 10–6, 2.35 9.95 10–6 s, respectively. This work provides vivid example regulating molecular magnetism promotes progress Dy-MOF crystal engineering.

Language: Английский

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Asymmetric triply bridged lanthanide binuclear clusters with distinctly different magnetic behaviors

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(48), P. 19097 - 19101

Published: Jan. 1, 2024

Isostructural triple bridged binuclear Ln clusters with antiferromagnetic and ferromagnetic couplings exhibit SMM behavior strong magnetothermal entropy, respectively.

Language: Английский

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