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Preparation method of color-adjustable fluorescent MOF-dye composite material

A MOF-, composite material technology, applied in luminescent materials, chemical instruments and methods, sustainable architecture, etc., can solve problems such as poor fluorescence regulation performance, overcome fluorescence quenching, improve composite efficiency, and achieve color tunability. Effect

Active Publication Date: 2021-11-16
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a color-adjustable fluorescent MOF-dye composite material, which solves the problem of poor fluorescence control performance of existing fluorescent composite materials

Method used

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  • Preparation method of color-adjustable fluorescent MOF-dye composite material
  • Preparation method of color-adjustable fluorescent MOF-dye composite material
  • Preparation method of color-adjustable fluorescent MOF-dye composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a color-adjustable fluorescent MOF-dye composite material of the present invention is specifically implemented according to the following steps:

[0046] Step 1, preparing fluorescent MOF material;

[0047]Weigh 23.3 mg (0.1 mmol) of zirconium tetrachloride and 28.2 mg (0.1 mmol) of Bim-H 2 BDC (2-(benzo[d]imidazol-1-yl)terephthalic acid) was placed in a 10 mL vial, and 5 mL of N,N-dimethylformamide and 0.5 mL of glacial acetic acid were added to obtain a mixed solution. React the above mixed solution in an oven at 120°C for 72 hours at a constant temperature, transfer the reacted solution to a centrifuge tube, centrifuge at 7000r / min for 7 minutes, absorb the supernatant, add DMF and continue centrifuging once, repeat the above operation Afterwards, they were centrifuged and washed three times with methanol. The centrifuged sample was dried in a vacuum oven at 60°C for 12 hours to obtain a light pink solid powder material;

[0048] Its specifi...

Embodiment 2

[0053] A method for preparing a color-adjustable fluorescent MOF-dye composite material of the present invention is specifically implemented according to the following steps:

[0054] Step 1, preparing fluorescent MOF material;

[0055] Specifically: zirconium salt, acetic acid, Bim-H 2 BDC is mixed with a solvent for solvothermal reaction, and then the reacted solution is washed twice with DMF, then washed with methanol three times, and dried in vacuum to obtain a fluorescent MOF material;

[0056] Bim-H 2 BDC is 2-(benzo[d]imidazol-1-yl)terephthalic acid; the zirconium salt is zirconium tetrachloride; the solvent is N,N-dimethylformamide;

[0057] Zirconium salt, Bim-H 2 The molar ratio of BDC, acetic acid and solvent is 3:1:0.5:5;

[0058] The temperature of the solvothermal reaction is 120°C, and the time is 24h;

[0059] The drying temperature is 60°C, and the drying time is 36 hours;

[0060] Step 2: Grind the fluorescent MOF material and rhodamine 6G in a mortar f...

Embodiment 3

[0064] A method for preparing a color-adjustable fluorescent MOF-dye composite material of the present invention is specifically implemented according to the following steps:

[0065] Step 1, preparing fluorescent MOF material;

[0066] Specifically: zirconium salt, acetic acid, Bim-H 2 BDC is mixed with a solvent for solvothermal reaction, and then the reacted solution is centrifugally washed twice with DMF, then three times with methanol, and vacuum-dried to obtain a fluorescent MOF material, whose chemical formula is {[Zr 6 o 4 (OH) 4 ](Bim-BDC) 6} n ;

[0067] Bim-H 2 BDC is 2-(benzo[d]imidazol-1-yl)terephthalic acid; the zirconium salt is zirconium tetrachloride; the solvent is N,N-dimethylformamide;

[0068] Zirconium salt, Bim-H 2 The molar ratio of BDC, acetic acid and solvent is 2:1:0.5:5;

[0069] The temperature of the solvothermal reaction is 100°C, and the time is 40h;

[0070] The drying temperature is 65°C, and the drying time is 28 hours;

[0071] St...

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Abstract

The invention discloses a preparation method of a color-adjustable fluorescent MOF-dye composite material, which specifically comprises the steps of: mixing zircon salt, acetic acid, Bim-H2BDC and a solvent, carrying out a solvothermal reaction, carrying out centrifugal washing and vacuum drying to obtain a fluorescent MOF material, placing the fluorescent MOF material and dye molecules in a mortar, grinding, adding DMF to the mixed solid, centrifuging, adding methanol for washing, and drying to obtain the fluorescent MOF-dye composite material. According to the composite material, the compounding efficiency of the material can be effectively improved, and the color adjustability of fluorescence can be realized by adjusting the proportion of the dye. The MOF has a regular pore structure and a confinement effect, so that the fluorescent dye can be effectively adsorbed by the MOF and is uniformly distributed, and fluorescence quenching caused by aggregation of the dye is effectively overcome.

Description

technical field [0001] The invention belongs to the technical field of fluorescent material preparation, and in particular relates to a method for preparing a color-adjustable fluorescent MOF-dye composite material. Background technique [0002] Due to their high photon absorption and conversion efficiency, fluorescent materials have attracted great attention in the fields of light-emitting diodes, biosensors, bioimaging, and drug tracers. Although traditional inorganic fluorescent materials such as phosphors are widely used, these inorganic phosphors have harsh synthesis conditions, high toxicity, and low quantum yield; organic small molecule fluorescent dyes usually show strong fluorescence properties in solution, but , in the solid state, the energy of excited-state molecules is dissipated through molecular motion, molecular collision, molecular accumulation, and environmental interaction, so that they become weak emitters or do not emit light at all, showing an aggregati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/02C08G83/00
CPCC09K11/06C09K11/025C08G83/008C09K2211/1088Y02B20/00
Inventor 刘萍刘花潘鹏辉李剑利厍梦尧
Owner NORTHWEST UNIV(CN)
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