Hexagonal biconical mononuclear dysprosium compound, preparation method and application thereof

A compound and bipyramidal technology, applied in the field of hexagonal bipyramidal mononuclear dysprosium compounds and their preparation, can solve the problems of inconvenient synthesis, easy decomposition or weathering, poor repetition effect, etc. High controllability and good stability

Pending Publication Date: 2022-01-28
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis of these high-performance dysprosium-based single-ion magnets often needs to be carried out under extreme conditions of anhydrous and oxygen-free, so it is inconvenient to control the synthesis, with poor reproducibility and low yield.
And some of these materials are unstable at room temperature and air, and are easy to decompose or weather

Method used

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  • Hexagonal biconical mononuclear dysprosium compound, preparation method and application thereof
  • Hexagonal biconical mononuclear dysprosium compound, preparation method and application thereof
  • Hexagonal biconical mononuclear dysprosium compound, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A synthetic method of a hexagonal bipyramidal mononuclear dysprosium compound with the behavior of a single-molecule magnet, comprising:

[0027] Step 1, 2,6-dichloro-4-nitrophenol (0.5mmol) and NaH (0.5mmol) were dissolved in 15mL water-dichloromethane (1:1) mixed solvent, and then DyCl 3 ·6H 2 O (0.5mmol) and pentaethylene glycol (0.5mmol) were added in, stirred for 1 hour, and a yellow suspension was obtained.

[0028] Step 2. Take NaBPh 4 (0.5mmol) was added to the above suspension, heated to 100°C and refluxed for 4 hours, cooled to room temperature, separated the dichloromethane layer with a separatory funnel, transferred to a test tube, slowly dripped 30mL of n-hexane to form two The phases were separated, and the crystals of dysprosium single-ion magnets were obtained after 4 days.

[0029] The yield of the dysprosium single-ion magnet prepared in this example is 41.8%, and the purity is above 99%.

Embodiment 2

[0031] A synthetic method of a hexagonal bipyramidal mononuclear dysprosium compound with the behavior of a single-molecule magnet, comprising:

[0032] Step 1, 2,6-dichloro-4-nitrophenol (0.3mmol) and NaH (0.3mmol) were dissolved in 10mL water-dichloromethane (1:1) mixed solvent, and then DyCl 3 ·6H 2 O (0.5mmol) and pentaethylene glycol (0.7mmol) were added in, stirred and reacted for 1 hour, and a yellow suspension was obtained.

[0033] Step 2. Take NaBPh 4 (0.5mmol) was added to the above suspension, heated to 100°C and refluxed for 4 hours, cooled to room temperature, separated the dichloromethane layer with a separatory funnel, transferred to a test tube, slowly dripped 20mL of n-hexane to form two The phases were separated, and the crystals of dysprosium single-ion magnets were obtained after 3 days.

[0034] The yield of the dysprosium single ion magnet prepared in this example is 38.5%, and the purity is above 99%.

[0035] The characterization of the dysprosium ...

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Abstract

The invention discloses a hexagonal biconical mononuclear dysprosium compound, a preparation method and application thereof, wherein the simple formula of the structure of the mononuclear dysprosium compound is [Dy(EO5-BPh2)(2,6-dichloro-4-nitro-PhO)Cl], the chemical structural formula of [EO5-BPh2]<-> is defined in the specification, and the chemical structural formula of [2, 6-dichro-4-nitro-PhO]<-> isdefined in the specification. Compared with the prior art, the hexagonal biconical mononuclear dysprosium compound has the following advantages: (1) the hexagonal biconical mononuclear dysprosium compound is good in stability and relatively high in purity and yield, can show a typical slow relaxation behavior under an external magnetic field of 0.06 T, has the characteristics of a single-molecule magnet, and can be used as a molecule-based magnetic material in novel high-density information storage equipment (such as an optical disk, a hard disk and the like); and (2) the method is safe and simple in process, high in controllability and good in reproducibility.

Description

technical field [0001] The invention relates to the technical field of molecular-based magnetic materials, and relates to a compound that has the characteristics of a single-molecule magnet and can be used in new high-density information storage devices (such as optical discs, hard disks, etc.), specifically a hexagonal bipyramidal mononuclear dysprosium compound and its preparation method and application. Background technique [0002] In recent years, the research on molecular magnets has received extensive attention. Single-molecule magnets are composed of discrete and non-interacting molecular units in the magnetic sense rather than three-dimensional extended lattices (such as metals, metal oxides). Hysteresis behavior is shown below the blocking temperature, so it shows broad application prospects in the fields of ultra-dense storage and quantum computing. To obtain compounds with the behavior of "single-molecule magnets", two conditions must be met magnetically: large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02H01F1/42
CPCC07F5/02H01F1/42C07B2200/13
Inventor 陈磊谭鹏飞程志杰赵颖娟蔡星伟袁爱华
Owner JIANGSU UNIV OF SCI & TECH
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