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Fluorescent dye and metal organic framework MOFs composite material, preparation method and application thereof

A metal-organic framework and fluorescent dye technology, applied in the field of fluorescent dye and metal-organic framework MOFs composite materials and their preparation, to achieve the effects of avoiding fluorescence quenching, mild preparation conditions, and wide emission range

Active Publication Date: 2019-06-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But since lanthanide metals are some of the more expensive rare earth materials

Method used

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  • Fluorescent dye and metal organic framework MOFs composite material, preparation method and application thereof
  • Fluorescent dye and metal organic framework MOFs composite material, preparation method and application thereof
  • Fluorescent dye and metal organic framework MOFs composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The synthesis of embodiment 1MOFs

[0047] A typical synthesis strategy is: Weigh 0.8g of zinc nitrate hexahydrate and ultrasonically dissolve it in 50mL of DMF, then weigh 1.6g of dimethylimidazole and add it to the above solution, then stir at 2000r / min for 1h at room temperature to obtain The white powder material was cleaned by centrifugation with 50mL DMF, ethanol and acetone, and then exchanged with acetone for three days to remove the residual organic solvent (DMF) in the composite material, and then dried under vacuum for 8h to obtain ZIF-8 (2 - methylimidazole zinc salt).

Embodiment 2

[0048] Synthesis of Example 2 Single Dye and MOFs Composite Material

[0049] First, dissolve 5-50 mg of the selected fluorescent dye pyrene in 50 mL of DMF, weigh 0.8 g of zinc nitrate hexahydrate and ultrasonically dissolve it in the above solution, then weigh 1.6 g of dimethylimidazole and add it to the above solution, and then , at 2000r / min, stirring for 1h, the obtained white powder material was washed by centrifugation with 50mL DMF, ethanol and acetone respectively, and then exchanged with acetone for three days, in order to remove the residual organic solvent (DMF) in the composite material, and then under vacuum condition Dry 8h.

Embodiment 3

[0050] Synthesis of Example 3 Double Dye and MOFs Composite Material

[0051]Two dyes pyrene and fluorescein with masses of 5mg and 20mg, 10mg and 20mg, 10mg and 60mg, 6mg and 120mg, 12mg and 120mg were dissolved in 50mL DMF respectively, and 0.8g of zinc nitrate hexahydrate was ultrasonically dissolved in the above solution, then weigh 1.6g dimethylimidazole and add it to the above solution, then at room temperature, at 2000r / min, stir for 1h, the white powder material obtained is washed with 50mLDMF, ethanol and acetone, and then washed with acetone Exchange for three days, in order to remove the residual organic solvent (DMF) in the composite material, and then dry under vacuum for 8h.

[0052] A series of characterizations were performed on the double dye and MOFs composite material prepared in Example 3, and the following results were obtained:

[0053] figure 1 The powder diffraction patterns of the composite materials with different proportions prepared in Example 3 a...

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Abstract

The invention relates to a fluorescent dye and metal organic framework MOFs composite material, a preparation method and application thereof. The fluorescent dye is two different organic fluorescent dyes. Metal in the metal organic framework MOFs is one or more of Zn, Cd, Co, Al and Cr, and is preferably Zn. The composite material of the invention has a wide emission range and a wide adjustable range, has mild preparation conditions, and can be applied to temperature sensors and the like.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a composite material of a fluorescent dye and a metal organic framework MOFs, a preparation method and an application thereof. Background technique [0002] Metal Organic Frameworks (Metal Organic Frameworks, hereinafter referred to as MOFs) is a three-dimensional porous crystalline material composed of metals or metal clusters bridged by organic ligands. MOFs material is a good carrier material because of its large specific surface area, adjustable pore size and shape. [0003] Whether in the industrial field or in the scientific research field, temperature is an important parameter. Traditional thermometers, such as liquid-filled thermometers (mercury thermometers), thermocouple thermometers, thermistor thermometers, etc., need to be in contact with the test sample through the probe during testing, which makes the above-mentioned thermometers unable to test some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08J5/18G01K11/32
Inventor 冯吉飞高水英曹荣
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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