Dysprosium complexes mixed with 8-hydroxyquinoline derivatives and 1,10-phenanthroline and their preparation methods and applications

A technology of hydroxyquinoline and o-phenanthroline, applied in the field of magnetic materials, achieves the effects of low cost, good repeatability, and simple preparation method

Inactive Publication Date: 2020-01-31
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are usually a variety of designs for multicolor luminescent materials based on lanthanides, but so far, no one has introduced 8-hydroxyquinoline derivatives and 1,10-phenanthroline into dysprosium complexes to achieve their tunable properties. Reports about Emissive Luminescence

Method used

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  • Dysprosium complexes mixed with 8-hydroxyquinoline derivatives and 1,10-phenanthroline and their preparation methods and applications
  • Dysprosium complexes mixed with 8-hydroxyquinoline derivatives and 1,10-phenanthroline and their preparation methods and applications
  • Dysprosium complexes mixed with 8-hydroxyquinoline derivatives and 1,10-phenanthroline and their preparation methods and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the preparation of complex 1

[0035]

[0036] The specific synthesis method is: 0.1mmol of 2-methyl-5,7-dibromo-8-hydroxyquinoline (0.0317g) and 0.1mmol of Dy(NO 3 ) 3 ·6H 2 O (0.0460g), added to a Pyrex tube with one end closed and about 18cm long, then added 0.1mmol of 1,10-phenanthroline (0.0182g), and then added 0.4mL of 1,4-dioxane and 1.1mL of water (the volume ratio of 1,4-dioxane and water is 1:2.75), and then with Et 3 N (about 10 μL) to adjust the pH of the system to 5.5, vacuumize the Pyrex tube, and seal the other end; put the sealed Pyrex tube in an oven at 90°C for 72 hours, take it out, and slowly cool it to room temperature to observe At the bottom of the Pyrex tube, yellow blocky crystals precipitated. Yield 32.60% (based on Dy).

[0037] The product obtained in this embodiment is characterized:

[0038] 1) Single crystal diffraction and structure analysis:

[0039] Select yellow blocky crystals of moderate size and place them o...

Embodiment 2

[0056] Embodiment 2: the preparation of complex 1

[0057] Repeat Example 1, the difference is:

[0058] 1) In the composition of the mixed solvent, the volume ratio of 1,4-dioxane and water is 1:4;

[0059] 2) adjusting the pH of the resulting solution to 5.8 with triethylamine;

[0060] 3) The reaction is carried out at 60°C.

[0061] After the reaction was completed, it was slowly cooled to room temperature, and yellow blocky crystals were precipitated at the bottom of the Pyrex tube. Yield 32.60% (based on Dy).

[0062] The product obtained in this example was analyzed by single crystal diffraction, and it was determined that the obtained yellow blocky crystal was the complex 1 described in the present invention, that is, Dy Ⅲ (L1) 2 (L2)(NO 3 ), where L1 is 2-methyl-5,7-dibromo-8-hydroxyquinoline with a hydroxyl hydrogen atom removed, with a unit negative charge; L2 is 1,10-phenanthroline.

Embodiment 3

[0063] Embodiment 3: the preparation of complex 1

[0064] Repeat Example 1, the difference is:

[0065] 1) In the composition of the mixed solvent, the volume ratio of 1,4-dioxane and water is 1:2;

[0066] 2) adjusting the pH of the resulting solution to 6.0 with triethylamine;

[0067] 3) The reaction is carried out at 90°C.

[0068] After the reaction was completed, it was slowly cooled to room temperature, and yellow blocky crystals were precipitated at the bottom of the Pyrex tube. Yield 32.85% (based on Dy).

[0069] The product obtained in this example was analyzed by single crystal diffraction, and it was determined that the obtained yellow blocky crystal was the complex 1 described in the present invention, that is, Dy Ⅲ (L1) 2 (L2)(NO 3 ), where L1 is 2-methyl-5,7-dibromo-8-hydroxyquinoline with a hydroxyl hydrogen atom removed, with a unit negative charge; L2 is 1,10-phenanthroline.

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Abstract

The invention discloses two dysprosium complexes doped with a 8-hydroxyquinoline derivative and 1,10-phenanthroline in a mixed mode and a preparation method and application of the dysprosium complexes. The two dysprosium complexes are a No. 1 complex and a No. 2 complex, wherein the No. 1 complex has a chemical formula of Dy(L1)<2>(L2)(NO3), and the No. 2 complex has a chemical formula of Dy(L3)<2>(L2)(NO3); and L1 is a product which is obtained by removing hydroxyl hydrogen atoms from 2-methyl-5,7-dibromo-8-hydroxyquinoline and carries one unit of negative charges, L2 is 1,10-phenanthroline,and L3 is a product which is obtained by removing hydroxyl hydrogen atoms from 2-methyl-5,7-dichloro-8-hydroxyquinoline and carries one unit of negative charges. The two complexes belong to a monoclinic system and a P21 / c space group, and the two complexes have a simple preparation method, high yield, good repeatability and field-induced single-molecule magnet behaviors, and can be applied to preparation of magnetic materials.

Description

technical field [0001] The invention relates to a dysprosium complex mixed with 8-hydroxyquinoline derivatives and 1,10-phenanthroline doped and its preparation method and application, belonging to the technical field of magnetic materials. Background technique [0002] Over the past decade, people have been increasingly interested in lanthanide-based coordination compounds, especially for their interesting optical and magnetic properties. Combining both properties into one molecular entity is the most efficient way to deliver bifunctional molecules. Lanthanides serve as a preferred group of targets for the construction of luminescent single-molecule magnets (SMMs), which are widely used in high-density data storage, quantum computing, light-emitting diodes, and color Backlighting in displays, as well as biomedical imaging, photodynamic therapy and other photonic devices. Owing to the multiple electron shells of the 4fn electron configuration, Ln(III) ions exhibit specific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00C09K11/06H01F1/42
CPCC07B2200/13C07F5/003C09K11/06C09K2211/182H01F1/42
Inventor 汪海玲邹华红梁福沛
Owner GUANGXI NORMAL UNIV
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