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Method for increasing performance of metallofullerene single-molecular magnet

A metallofullerene, molecular magnet technology, applied in the direction of magnetism of organic materials/organic magnetic materials, and can solve the problems of weakening of magnetism

Inactive Publication Date: 2017-03-08
BEIJING FUNAKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the traditional magnetic tests are based on the solid powder of metal fullerene, there are many problems, such as the molecules are close to each other, there will inevitably be antiferromagnetic coupling leading to magnetic weakening

Method used

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  • Method for increasing performance of metallofullerene single-molecular magnet
  • Method for increasing performance of metallofullerene single-molecular magnet
  • Method for increasing performance of metallofullerene single-molecular magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 0.19g of zinc nitrate hexahydrate and 0.038g of 1,3,5-tris(4-carboxybenzene)benzoic acid in 10mL of DEF, ultrasonicate for 30 minutes, and when the solution becomes transparent, add 1mL of TbSc 2 N@C 80 Toluene solution (containing 0.02mg TbSc 2 N@C 80 ), then this mixed solution was placed in a reactor for co-crystallization for 24 hours, and the temperature was set at 100 degrees. After cooling, a dark solid was precipitated on the wall of the reactor, and the resulting solid was washed three times with toluene and then vacuum-dried. The obtained solid is MOF-177@TbSc 2 N@C 80 of composite materials. Take 10 mg of solid powder for XRD characterization.

[0034] figure 1 It is the XRD pattern of MOF-177 powder.

[0035] figure 2 for MOF-177@TbSc 2 N@C 80 XRD spectrum of the complex.

[0036] and figure 1 Compared to MOF-177@TbSc 2 N@C 80 There are obviously a few more characteristic peaks on the spectrum, it can be seen that TbSc 2 N@C 80 Co-c...

Embodiment 2

[0038] Dissolve 0.7 g of chromium nitrate hexahydrate in 10 mL of deionized water, add 0.4 g of terephthalic acid after fully dissolving, and then add dropwise 0.09 g of hydrofluoric acid solution into the mixed solution. Transfer the mixture into the reaction kettle, and finally add 1 mL of DySc to the reaction kettle 2 N@C 80 in toluene solution (containing 0.02mg DySc 2 N@C 80 ), after mixing evenly, the reaction kettle was co-crystallized at a constant temperature for 8 hours under the condition of 220 degrees, and after cooling, the product was filtered and washed, and vacuum-dried to obtain the product MIL-101@DySc 2 N@C 80 Complex. To characterize.

[0039] image 3 for DySc 2 N@C 80 Magnetization curve at 10K for solid powder (2 mg).

[0040] Figure 4 for DySc 2 N@C 80 Magnetization curve at 10K for solid powder (0.02 mg).

[0041] Figure 5 for DySc 2 N@C 80 @MIL-101 complex (containing 0.02mg DySc 2 N@C 80 ) magnetization curve at 10K.

[0042] fr...

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Abstract

The invention relates to a method for increasing the performance of a metallofullerene single-molecular magnet. The method includes: dispersing the metallofullerene single-molecular magnet into the ducts of an organic porous material, wherein the organic porous material is a metal organic framework compound material or a covalent organic frame compound material. Magnetism test results show that the metallofullerene single-molecular magnet dispersed in the organic frame compound is high in blocking temperature and magnetization intensity. By the method, the performance of the metallofullerene single-molecular magnet can be increased effectively.

Description

technical field [0001] The invention belongs to the field of metallofullerene magnetic materials, and in particular relates to a method for improving the performance of metallofullerene single-molecule magnets. Background technique [0002] At present, embedded metallofullerene molecules have attracted much attention due to their unique nested structure and excellent physical and chemical properties, and have become important functional materials in the fields of physics, chemistry, materials and life sciences. Metallofullerenes and their derivatives have a wide range of applications in quantum information processing, solar receptors, MRI contrast agents, and antitumor drugs. [0003] Metallofullerenes may be embedded with rare earth elements including Dy, Ho, Tb, and the like. These rare earth ions represented by Dy contain multiple unpaired f electrons, which make these metallofullerene molecules have paramagnetic properties. In recent years, it has been found that Dy-in...

Claims

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Application Information

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IPC IPC(8): H01F1/42
CPCH01F1/42
Inventor 王春儒王太山李永建蒋礼
Owner BEIJING FUNAKANG BIOTECH CO LTD
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