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Co(III)-Co(II) binuclear cobalt single-molecular magnet, preparation method and application thereof

A single-molecule magnet and molecular magnet technology are applied in the field of Co-Co binuclear cobalt single-molecule magnets and their preparation, achieving the effects of good reproducibility, high controllability, and safe and simple process

Pending Publication Date: 2022-01-21
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Co(III)-Co(II) binuclear cobalt single-molecule magnets, the coordination configuration of the magnetic ion Co(II) has not yet been reported

Method used

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  • Co(III)-Co(II) binuclear cobalt single-molecular magnet, preparation method and application thereof
  • Co(III)-Co(II) binuclear cobalt single-molecular magnet, preparation method and application thereof
  • Co(III)-Co(II) binuclear cobalt single-molecular magnet, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Dissolve N,N'-bis(5-methylpyrazole-3-formyl)-1,3-propanediamine (0.5mmol) and 4-dimethylaminopyridine (4mmol) in 5mL methanol solution, add Dissolve CoAc in 5mL 2 4H 2 In the pink methanol solution of O (1 mmol), the mixed solution immediately changed from pink to purple, refluxed at 70°C for 2 hours, after cooling, slowly dripped 20 mL of ether to form two-phase separation, and purple crystals precipitated after standing for 3 days . The yield is about 62%.

Embodiment 2

[0030] Dissolve N,N'-bis(5-methylpyrazole-3-formyl)-1,3-propanediamine (0.7 mmol) and 4-dimethylaminopyridine (4.3 mmol) in 8 mL of methanol solution, Add to 5mL dissolved CoAc 2 4H 2 In the pink methanol solution of O (1mmol), the mixed solution immediately changed from pink to purple, refluxed at 70°C for 2 hours, after cooling, slowly dripped 30mL of ether to form two-phase separation, and purple crystals precipitated after standing for 4 days . The yield is about 65%.

[0031] The characterization of the cobalt-based single-ion magnet prepared in this example is as follows:

[0032] (1) Determination of crystal structure

[0033] Select a single crystal of a suitable size under a microscope, and use graphite monochromatized molybdenum target Mo Kα on a Bruker SMART Apex II CCD single crystal instrument at room temperature test structure. Data were collected and unit cells determined using the program APEXII. Structural data were normalized and absorbed corrected us...

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Abstract

The invention discloses a Co(III)-Co(II) binuclear cobalt single-molecular magnet, a preparation method and application thereof, the chemical formula of the single-molecular magnet is [CoIIICoII(L)(DMAP)3(CH3COO)], wherein H4L is N, N'-bis(5-methylpyrazole-3-formyl)-1, 3-propane diamine, and the structure is as shown in the specification, DMAP is 4-dimethylaminopyridine, and the structure is as shown in the specification. Compared with the prior art, the Co(III)-Co(II) binuclear cobalt single-molecular magnet has the following advantages that: (1) the Co(III)-Co(II) binuclear cobalt single-molecular magnet can show typical slow relaxation behavior under an external magnetic field of 0.1T, has the characteristics of a single-molecular magnet, and can be used as a molecule-based magnetic material in novel high-density information storage equipment (such as an optical disk and a hard disk); and (2) the method is safe and simple in process, high in controllability and good in reproducibility.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and relates to a single-molecule magnet material, in particular to a Co(III)-Co(II) binuclear cobalt single-molecule magnet and a preparation method and application thereof. Background technique [0002] Magnetic materials are widely used, and its application market exceeds that of semiconductor materials. Among them, information storage is one of the largest application fields of magnetic materials. With the development of information technology, people demand that the number of integrated electronic devices increases exponentially and the size of the devices continues to decrease. The continuous development of this integration and miniaturization will be limited by the processing technology and cost, which will cause insurmountable obstacles to the integration technology of modern electronic devices. Therefore, the research and development of molecular-based magnetic materials has ...

Claims

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Application Information

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IPC IPC(8): C07F15/06H01F1/42
CPCC07F15/065H01F1/42
Inventor 陈磊刘梦瑶程志杰田双琴蔡星伟袁爱华
Owner JIANGSU UNIV OF SCI & TECH
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