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Eu-MOF multicolor light-emitting crystal material, Tb-MOF green-light crystal material, and preparation method thereof

A technology of light-emitting crystals and crystal materials, applied in the field of chemistry, can solve the problems of high cost, harsh preparation conditions, environmental pollution, etc., and achieve the effects of low cost, good thermal stability and light stability, and good repeatability

Active Publication Date: 2017-06-13
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the vast majority of crystal luminescent materials are prepared by high-temperature pulling method or molten salt method, the preparation conditions are relatively harsh, and the cost is high, and it also causes certain pollution to the environment.

Method used

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  • Eu-MOF multicolor light-emitting crystal material, Tb-MOF green-light crystal material, and preparation method thereof
  • Eu-MOF multicolor light-emitting crystal material, Tb-MOF green-light crystal material, and preparation method thereof
  • Eu-MOF multicolor light-emitting crystal material, Tb-MOF green-light crystal material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step1: At room temperature, weigh 29.8mg Eu(NO 3 ) 3 ·6H 2 O and 30.0mg 4,4'-diphenyl ether dicarboxylic acid, the Eu(NO 3 ) 3 ·6H 2 O and 4,4'-diphenyl ether dicarboxylic acid were added to a 25ml autoclave with 5ml deionized water, stirred to obtain a uniform solution, and then adjusted with 1ml 25% ammonia water (or 1ml 0.01mol / L NaOH solution) When the pH value reached 7.5, the stirring was continued for 5 hours to obtain a uniformly mixed solution.

[0042] Step2: Incubate the homogeneously mixed solution at 180°C for 72 hours.

[0043] Step3: Heat the above heat-treated solution at 3°Ch -1 Cool down at the cooling rate until it cools down to room temperature.

[0044] Step4: Remove the mother liquor, wash the obtained solid with water for several times, and the obtained colorless transparent flaky crystal is the product {[Eu 4 (4,4’-Diphenyl ether dicarboxylic acid) 6 (H 2 O) 9 ]·(H 2 O)}∞.

[0045] The yield of the product calculated based on the amo...

Embodiment 2

[0049] Step1: At room temperature, weigh 29.8mg Tb(NO 3 ) 3 ·6H 2 O and 30.0mg 4,4'-diphenyl ether dicarboxylic acid, Tb(NO 3 ) 3 ·6H 2 O and 4,4'-diphenyl ether dicarboxylic acid were added to a 25ml autoclave with 5ml deionized water, stirred to obtain a uniform solution, and then adjusted with 1ml 25% ammonia water (or 1ml 0.01mol / L NaOH solution) When the pH value reached 8, the stirring was continued for 5 h to obtain a uniformly mixed solution.

[0050] Step2: Incubate the homogeneously mixed solution at 180°C for 72 hours.

[0051] Step3: Heat the above heat-treated solution at 3°Ch -1 Cool down at the cooling rate until it cools down to room temperature.

[0052] Step4: Remove the mother liquor, wash the solid obtained several times with water, and the obtained colorless transparent flaky crystal is the product {[Tb 4 (4,4’-Diphenyl ether dicarboxylic acid) 6 (H 2 O) 9 ]·(H 2 O)}∞.

[0053] The yield of the product calculated based on the amount of 4,4'-di...

Embodiment 3

[0057] Step1: At room temperature, weigh 59.6mg Eu(NO 3 ) 3 ·6H 2 O and 60.0mg 4,4'-diphenyl ether dicarboxylic acid, the Eu(NO 3 ) 3 ·6H 2 O and 4,4'-diphenyl ether dicarboxylic acid were added to a 25ml autoclave with 10ml deionized water, stirred to obtain a uniform solution, and then adjusted with 1ml 25% ammonia water (or 1ml 0.01mol / L NaOH solution) When the pH value reached 8.5, the stirring was continued for 5 hours to obtain a uniformly mixed solution.

[0058] Step2: Incubate the homogeneously mixed solution at 180°C for 72 hours.

[0059] Step3: Heat the above heat-treated solution at 6°Ch -1 Cool down at the cooling rate until it cools down to room temperature.

[0060] Step4: Remove the mother liquor, wash the obtained solid with water for several times, and the obtained colorless transparent flaky crystal is the product {[Eu 4 (4,4’-Diphenyl ether dicarboxylic acid) 6 (H 2 O) 9 ]·(H 2 O)}∞.

[0061] The yield of the product calculated based on the am...

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PUM

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Abstract

The invention discloses an Eu-MOF multicolor light-emitting crystal material, a Tb-MOF green-light crystal material, and a preparation method thereof. The Eu-MOF multicolor light-emitting crystal material and the Tb-MOF green-light crystal material are respectively single components and have the chemical compositions respectively: {[Eu4(4,4'-oxydibenzoic acid]6(H2O)9].(H2O)} infinity, and {[Tb4(4,4'-oxydibenzoic acid]6(H2O)9].(H2O)} infinity, wherein the Eu-MOF multicolor light-emitting crystal material can realize white-light emitting. The Eu-MOF multicolor light-emitting crystal material, the Tb-MOF green-light crystal material, and the preparation method thereof provided by the invention have the beneficial effects that (1) the Eu-MOF multicolor light-emitting crystal material and the Tb-MOF green-light crystal material not only have favorable heat stability and light stability, but also has higher light-emitting efficiency, and are excellent novel high-efficient light-emitting crystal materials; (2) the materials can be prepared under a low-temperature hydrothermal condition, are simple in process, loose in condition requirement, lower in cost and good in repeatability, have no pollution on the environment, and can be produced in batch.

Description

technical field [0001] The invention relates to an organic-inorganic hybrid luminescent crystal material and a preparation method thereof, in particular to a Eu-MOF multicolor luminescent crystal material composed of a single component (which can realize white light emission) and a Tb-MOF green light composed of a single component The crystal material (which can realize green light emission) and the preparation method of the two belong to the field of chemical technology. Background technique [0002] With the depletion of fossil energy, the energy crisis is approaching. While developing renewable energy, improving the utilization rate of energy has also attracted great attention from all over the world. [0003] Currently, lighting and displays consume more than 50% of the world's electricity. In order to effectively improve energy utilization efficiency, high-efficiency luminescent materials with high energy conversion efficiency and can effectively avoid the high energy...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06
CPCC09K11/06C08G83/008C09K2211/182C09K2211/1425C09K2211/1433
Inventor 房贞兰杨丹丹田云曹小薇鞠强黄维
Owner NANJING UNIV OF TECH
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