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A kind of tripolyphosphazene cross-linked rare earth complex luminescent material and preparation method thereof

A technology of tripolyphosphazene and luminescent materials, which is applied in the directions of luminescent materials, chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, etc., can solve the problems of weak luminescence intensity of rare earth complexes, and achieve excellent luminescence performance , The effect of high color purity and many luminous centers

Active Publication Date: 2018-05-15
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, no good solution has been found for the bottleneck problem of weak luminous intensity of rare earth complexes.

Method used

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  • A kind of tripolyphosphazene cross-linked rare earth complex luminescent material and preparation method thereof
  • A kind of tripolyphosphazene cross-linked rare earth complex luminescent material and preparation method thereof
  • A kind of tripolyphosphazene cross-linked rare earth complex luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: The preparation method of trimeric phosphazene cross-linked rare earth complex luminescent material:

[0030] S1: In a 250ml single-necked flask, add 100ml of tetrahydrofuran in turn, 2.50g (7.19mmol) of hexachlorocyclotrimeric phosphazene, 7.13g (51.59mmol) of p-hydroxybenzoic acid, and 11.3g of potassium carbonate (82.30mmol), at 66 o C under heating and stirring, condensed and refluxed for 48h.

[0031] S2: After the reaction is complete, change to a distillation device to distill off the solvent tetrahydrofuran; then dissolve the product with DMF and stir for 12 hours. After filtration, a clear filtrate was obtained. After half of the filtrate was evaporated, the product was finally reprecipitated with ethyl acetate, washed three times with ethyl acetate, and dried in vacuum for 12 hours.

[0032] S3: Add 0.8g TbCl to a 100ml three-neck flask 3 .6H 2 O and 40ml alcohol as solvent, sonicated to TbCl 3 .6H 2 O is completely dissolved, and hexa(4-formyl...

Embodiment 2

[0036] Example 2: The preparation method of tripolyphosphazene cross-linked rare earth complex luminescent material:

[0037] S1: In a 250ml single-necked flask, add 100ml of tetrahydrofuran in turn, 2.50g (7.19mmol) of hexachlorocyclotrimeric phosphazene, 7.13g (51.59mmol) of p-hydroxybenzoic acid, and 11.3g of potassium carbonate (82.30mmol), at 66 o C under heating and stirring, condensed and refluxed for 48h.

[0038] S2: After the reaction is complete, change to a distillation device, distill off the solvent tetrahydrofuran, then dissolve the product with DMF, and stir for 12 hours. After filtration, a clear filtrate was obtained. After half of the filtrate was evaporated, the product was finally reprecipitated with ethyl acetate, washed three times with ethyl acetate, and dried in vacuo for 15 hours.

[0039] S3: Add 0.8g EuCl to a 100ml three-neck flask 3 .6H 2 O, 40ml alcohol as solvent, sonicated to EuCl3 .6H 2 O is completely dissolved, and hexa(4-formyl potassiu...

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Abstract

The invention relates to a luminescent material with cyclotriphosphazene cross-linked rare-earth complexes and a method for preparing the luminescent material. A general structural formula of the cyclotriphosphazene cross-linked rare-earth complexes is shown. Hexa-(4-potassium formate based phenoxy) cyclotriphosphazene is used as ligand and reacts with terbium chloride and europium chloride to obtain the cyclotriphosphazene cross-linked rare-earth complexes. The luminescent material and the method have the advantages that the complexes are of cross-linked netted structures, rare-earth ions are appropriately spaced from one another, and accordingly concentration quenching of the rare-earth ions can be prevented; each single molecule is provided with multiple luminescent centers, and accordingly the complexes are excellent in luminescent performance.

Description

technical field [0001] The invention relates to the field of rare earth luminescent materials, in particular to a tripolymer phosphazene crosslinked rare earth complex luminescent material and a preparation method thereof. Background technique [0002] Rare earth is a new type of functional material with optical, magnetic, electrical and biological properties. Rare earth ions have unique luminescent properties due to the unique structure of their 4f electron shell. Rare earth complexes are obtained by coordination and bonding of ligands and rare earth ions. The principle of luminescence is that the ligand absorbs energy in the ultraviolet region, and then the ligand transfers the energy of its excited state to the rare earth ion in the form of intramolecular energy transfer. The emission levels cause the rare earth ions to emit light. [0003] Compared with other luminescent materials, rare earth luminescent materials have the characteristics of high color purity, high lum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C07F19/00C07F9/6593
Inventor 杨朝龙尚明勇雷蕾何键高宝李上宋冬梅
Owner CHONGQING UNIV OF TECH
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