Fluorescent dye and metal organic framework mofs composite material and its preparation method and application
A metal-organic framework and fluorescent dye technology, which is applied in the field of fluorescent dyes and metal-organic framework MOFs composite materials and their preparation, and achieves the effects of wide adjustable range, wide emission range and good dispersion.
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Embodiment 1
[0046] Synthesis of Example 1 MOFs
[0047] A typical synthesis strategy is: Weigh 0.8 g of zinc nitrate hexahydrate and ultrasonically dissolve it in 50 mL of DMF, then weigh 1.6 g of dimethylimidazole and add it to the above solution, then stir at 2000 r / min for 1 h, the obtained white powder material was cleaned by centrifugation with 50 mL 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 8 h to obtain ZIF-8 (zinc salt of 2-methylimidazole)
Embodiment 2
[0048] Example 2 Synthesis of Single Dye and MOFs Composite Materials
[0049] Firstly, 5-50 mg of the selected fluorescent dye pyrene was dissolved in 50 mL of DMF, 0.8 g of zinc nitrate hexahydrate was weighed and ultrasonically dissolved in the above solution, and then 1.6 g of dimethylimidazole was weighed and added to the above solution, and then at room temperature Under the condition of 2000 r / min, stirring for 1 h, the obtained white powder material was washed by centrifugation with 50 mL DMF, ethanol and acetone, and then exchanged with acetone for three days, in order to remove the residual organic solvent (DMF) in the composite material , and then dried under vacuum for 8 h.
Embodiment 3
[0050] Example 3 Synthesis of dual dyes and MOFs composites
[0051]Two dyes, pyrene and fluorescein with masses of 5 mg and 20 mg, 10 mg and 20 mg, 10 mg and 60 mg, 6 mg and 120 mg, 12 mg and 120 mg were dissolved in 50 mL DMF respectively, and 0.8 G of zinc nitrate hexahydrate was ultrasonically dissolved in the above solution, then weighed 1.6 g of dimethylimidazole and added to the above solution, then at room temperature, at 2000r / min, stirred for 1 h, and the obtained white powder materials were washed with 50 mL DMF, ethanol and acetone were washed by centrifugation, 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 8 h.
[0052] A series of characterizations were performed on the dual-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 differen...
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