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Cu-MOF luminescent crystal material capable of realizing yellow light emission, and preparation method thereof

A technology of luminescent crystals and yellow light, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of high cost, environmental pollution, harsh preparation conditions, etc., and achieve the effect of low cost, good repeatability, and no pollution

Inactive Publication Date: 2018-11-30
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since most 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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  • Cu-MOF luminescent crystal material capable of realizing yellow light emission, and preparation method thereof
  • Cu-MOF luminescent crystal material capable of realizing yellow light emission, and preparation method thereof
  • Cu-MOF luminescent crystal material capable of realizing yellow light emission, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1. At room temperature, weigh 50mg CuI and 25.0mg 1,6-bis(2-methyl-1H-imidazol-1-yl)hexane, mix CuI and 1,6-bis(2-methyl-1H -Imidazol-1-yl)hexane was added to a 25ml autoclave equipped with 5ml of a mixed solvent consisting of deionized water, ethanol and DMF, wherein the volume ratio of deionized water, ethanol and DMF was 1:1:3 , stirred to obtain a uniformly mixed solution, then adjusted the pH value to 8 with 1ml of 0.01mol / L NaOH solution, and continued to stir for 5h to obtain a uniformly mixed solution.

[0027] Step 2. Keep the uniformly mixed solution at 100° C. for 24 hours.

[0028] Step 3, heat the solution after the above heat treatment at 5°C h -1 Cool down at the cooling rate until it cools down to room temperature.

[0029] Step 4, the mother liquor in the solution obtained in step 3 is removed, the solid obtained is washed with ethanol several times, and the brown transparent columnar crystal obtained is the product [Cu 2 (1,6-bis(2-methyl-1H-im...

Embodiment 2

[0034] Step 1. At room temperature, weigh 69.6mg CuI 2 and 45.0mg 1,6-bis(2-methyl-1H-imidazol-1-yl)hexane, CuI 2 and 1,6-bis(2-methyl-1H-imidazol-1-yl)hexane were added to an autoclave containing 10ml of a mixed solvent consisting of 25ml of deionized water, ethanol and DMF, wherein the deionized water The volume ratio of , ethanol and DMF is 1:3:6, stir to obtain a uniformly mixed solution, then use 1ml 0.01mol / L NaOH solution) to adjust the pH value to 8.5, and continue stirring for 5h to obtain a uniformly mixed solution.

[0035] Step 2. Keep the uniformly mixed solution at 120° C. for 24 hours.

[0036] Step 3, heat the solution after the above heat treatment at 5°C h -1 Cool down at the cooling rate until it cools down to room temperature.

[0037] Step 4, remove the mother liquor in the solution obtained in step 3, wash the solid obtained multiple times with water, and the brown transparent columnar crystal obtained is the product [Cu 2 (1,6-bis(2-methyl-1H-imidazo...

Embodiment 3

[0041] Step 1. At room temperature, weigh 95.5mg CuI and 60.0mg 1,6-bis(2-methyl-1H-imidazol-1-yl)hexane, mix CuI and 1,6-bis(2-methyl- 1H-imidazol-1-yl) hexane was added to a 25ml autoclave equipped with 14ml of a mixed solvent consisting of deionized water, ethanol and DMF, wherein the volume ratio of deionized water, ethanol and DMF was 4:3: 7. Stir to obtain a uniformly mixed solution, then adjust the pH value to 9.5 with 1ml 25% ammonia water (or 1ml 0.01mol / L NaOH solution), and continue stirring for 5h to obtain a uniformly mixed solution.

[0042] Step 2. Keep the uniformly mixed solution at 140° C. for 24 hours.

[0043] Step 3, heat the solution after the above heat treatment at 15°C h -1 Cool down at the cooling rate until it cools down to room temperature.

[0044] Step 4, remove the mother liquor in the solution obtained in step 3, wash the solid obtained multiple times with water, and the brown transparent columnar crystal obtained is the product [Cu 2 (1,6-bi...

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Abstract

The invention discloses a Cu-MOF luminescent crystal material capable of realizing yellow light emission, and a preparation method thereof. The preparation method comprises the following steps: addingCuI and 1,6-bis(2-methyl-1H-imidazole-1-yl)hexane into an autoclave filled with a mixed solvent composed of deionized water, ethanol and DMF at room temperature, performing stirring to obtain a uniformly mixed suspension, and adjusting the pH value of the suspension to 8-11; carrying out heat insulation on the obtained uniformly mixed solution at 120-180 DEG C for 24 h; cooling the heat treated solution to room temperature; and removing a mother liquid from the obtained solution, and respectively washing the obtained solid with a buffering solvent containing alcohol and ethanol several timesto obtain the brown transparent columnar crystal which is the Cu-MOF luminescent crystal material capable of realizing yellow light emission. Compared with crystals in the prior art, the Cu-MOF prepared in the invention can realize orange emission under the irradiation of an ultraviolet lamp, has the advantages of good thermal stability, good light stability, very long luminescence lifetime and high luminescence efficiency, and is an excellent novel high-efficiency luminescent crystal material.

Description

technical field [0001] The invention relates to the field of high-efficiency inorganic-organic hybrid fluorescent crystal materials capable of emitting yellow light and a preparation method thereof, in particular to a Cu-MOF luminescent crystal material capable of emitting yellow light and a preparation method thereof. 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. 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 loss in conventional luminescent materials have attracted more and more attention from the scientific and commercial communities. To achieve a high quantum yield, t...

Claims

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Application Information

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IPC IPC(8): C09K11/06C08G83/00
CPCC09K11/06C08G83/008C09K2211/1466
Inventor 鞠强房贞兰赵芳瑜徐宜秀赵丽娜丁魏林森张毓玮
Owner NANJING UNIV OF TECH
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