Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnetic complex and preparation method thereof

A complex and magnetic technology, applied in the field of magnetic complexes and preparation thereof, achieves the effects of easy operation of the preparation method, short synthesis time and low cost

Inactive Publication Date: 2021-01-01
葛宗义
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the problem that the effective reversal energy barrier (also known as magnetic anisotropy energy barrier, represented by Ueff) and blocking temperature (also known as hysteresis temperature, represented by TB) of rare earth single-molecule magnets are too low, the object of the present invention is to provide a A kind of magnetic complex and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic complex and preparation method thereof
  • Magnetic complex and preparation method thereof
  • Magnetic complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare 100mL of ethanol-water mixed solvent (ratio 3:2) and add it to the three-necked flask, weigh about 5g of solid NH 4 Cl and 9g of 2,3-dimethyl-2,3-dinitrobutane were added into a three-necked flask, and reacted at -10°C for 20min. Slowly add 20g of Zn powder into the three-necked flask within 2h, slowly rise to room temperature, react for 3h, then filter and dry to obtain 7g of 2,3-dimethyl-2,3-dihydroxyaminobutane. Weigh 4.4g of 2,3-dimethyl-2,3-dihydroxyaminobutane and dissolve it completely with 20mL of methanol, then add 5g of 2-indole formaldehyde, react at room temperature for 16-24h, and filter to obtain 6g of nitroxide free radical precursor. Dissolve 6 g of organic nitrogen oxide radical precursor in 20 mL of dichloromethane, add 48 g of lead oxide, stir at room temperature for 3 hours, and obtain 4.3 g of organic nitrogen oxide radical by column chromatography. 2.6gSm(hfac) 3 Mix with 100mL of n-hexane, heat to 80°C, reflux for 30min to dissolve the ...

Embodiment 2

[0027] Prepare 100mL of ethanol-water mixed solvent (ratio 3:2) and add it to the three-necked flask, weigh about 5g of solid NH 4 Cl and 9g of 2,3-dimethyl-2,3-dinitrobutane were added into a three-necked flask, and reacted at -10°C for 20min. Slowly add 20g of Zn powder into the three-necked flask within 2h, slowly rise to room temperature, react for 3h, then filter and dry to obtain 7g of 2,3-dimethyl-2,3-dihydroxyaminobutane. Weigh 4.4g of 2,3-dimethyl-2,3-dihydroxyaminobutane and dissolve it completely with 20mL of methanol, then add 5g of 2-indole formaldehyde, react at room temperature for 16-24h, and filter to obtain 6g of nitroxide free radical precursor. Dissolve 6 g of organic nitrogen oxide radical precursor in 20 mL of dichloromethane, add 48 g of lead oxide, stir at room temperature for 3 hours, and obtain 4.3 g of organic nitrogen oxide radical by column chromatography. 2.6gSm(hfac) 3 Mix with 100mL n-hexane, heat to 100°C, reflux for 30min to dissolve the sa...

Embodiment 3

[0029] Prepare 100mL of ethanol-water mixed solvent (ratio 3:2) and add it to the three-necked flask, weigh about 5g of solid NH 4 Cl and 9g of 2,3-dimethyl-2,3-dinitrobutane were added into a three-necked flask, and reacted at -10°C for 20min. Slowly add 20g of Zn powder into the three-necked flask within 2h, slowly rise to room temperature, react for 3h, then filter and dry to obtain 7g of 2,3-dimethyl-2,3-dihydroxyaminobutane. Weigh 4.4g of 2,3-dimethyl-2,3-dihydroxyaminobutane and dissolve it completely with 20mL of methanol, then add 5g of 2-indole formaldehyde, react at room temperature for 16-24h, and filter to obtain 6g of nitroxide free radical precursor. Dissolve 6 g of organic nitrogen oxide radical precursor in 20 mL of dichloromethane, add 48 g of lead oxide, stir at room temperature for 3 hours, and obtain 4.3 g of organic nitrogen oxide radical by column chromatography. 2.6gSm(hfac) 3 Mix with 100mL n-hexane, heat to 120°C, reflux for 30min to dissolve the sa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The molecular formula of the magnetic complex disclosed by the invention is C45H42F18N6O10Sm; the structural formula of the magnetic complex is shown as a formula I. The magnetic complex is prepared by the following method: 1, preparing 2, 3-dimethyl-2, 3-dihydroxyaminobutane; 2, preparing an organic nitroxide free radical precursor; 3, preparing organic nitroxide free radicals; and 4, preparing the magnetic complex. The preparation method of the magnetic complex is simple and easy to operate, quick in reaction, short in synthesis time, high in yield, high in reproducibility, environmentally friendly, low in raw material cost and sufficient in source. At a low temperature, the material has an obvious variable magnetic behavior, and can be used as a magnetic sensing material and a high-density information storage material.

Description

technical field [0001] The invention belongs to the technical field of molecular-based magnetic materials, and in particular relates to a magnetic complex and a preparation method thereof. Background technique [0002] Traditional magnetic materials are two-dimensional or three-dimensional solids of inorganic atoms, containing metal atoms (transition or rare earth metals) or their ions, which have unpaired electrons in the d or f orbitals of electrons, relying on the d electrons or f Electrons generate magnetism through exchange. Produced through energy-intensive, high-temperature metallurgical methods, these magnetic materials are electrically conductive and brittle. Compared with traditional magnetic materials, molecular-based magnets are organic or organic / inorganic hybrid materials, which are composed of metallic or organic atomic groups containing spin units. Molecular-based magnets include materials with electronic spins only in organic components (in P orbitals), ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00H01F1/42
CPCC07F5/003H01F1/42
Inventor 葛宗义
Owner 葛宗义