Aspirin-based carbon quantum dot and biological application thereof
A carbon quantum dot and aspirin technology, which is applied in the field of nano-drugs, can solve the problems of biological activity retention, unseen research, etc., and achieves the effects of low risk, simple experimental operation, and good experimental repeatability.
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Embodiment 1
[0021] (1) Preparation of aspirin-based carbon quantum dots: 2 g of acetylsalicylic acid was added to 1.08 mL of an aqueous solution of hydrazine hydrate with a mass concentration of 98%, and the total volume of the entire system was 10 mL. The microwave power is 100W, and the time is 8 minutes. Aspirin-based carbon quantum dots with blue fluorescence were obtained.
[0022] (2) Separation and purification of carbon quantum dots: add 80 mL of deionized water to the carbon quantum dots prepared in step (1), ultrasonically disperse the product, separate and purify the prepared carbon quantum dots with a molecular weight of 3500, and dialysis for 7 Days later, the obtained product was filtered with a water-based filter head with a particle size of 0.22 μm, concentrated to 10 mL after rotary evaporation, and then freeze-dried to obtain aspirin-based carbon quantum dot powder (brown yellow), with a yield of about 50 mg.
[0023] Observation under a transmission electron microscope...
Embodiment 2
[0025] (1) Preparation of aspirin-based carbon quantum dots: 1 g of acetylsalicylic acid was added to an aqueous solution containing 1.08 mL of 98% hydrazine hydrate, and the total volume of the entire system was 10 mL. The microwave power is 100W, and the time is 7 minutes. Aspirin-based carbon quantum dots with blue fluorescence were obtained.
[0026] (2) Separation and purification of carbon quantum dots: add 50 mL of deionized water to the carbon quantum dots prepared in step (1), ultrasonically disperse the product, separate and purify the prepared carbon quantum dots with a molecular weight of 3500, and dialysis for 7 Days later, the obtained product was filtered with a water-based filter head with a particle size of 0.22 μm, concentrated to 5 mL after rotary evaporation, and freeze-dried to obtain aspirin-based carbon quantum dot powder (brown yellow), with a yield of about 30 mg. The resulting carbon quantum dots have strong fluorescent properties, such as figure 2...
Embodiment 3
[0028] (1) Preparation of aspirin-based carbon quantum dots: 2 g of acetylsalicylic acid was added to an aqueous solution containing 0.54 mL of 98% hydrazine hydrate, and the total volume of the entire system was 10 mL. The microwave power is 100W, and the time is 8 minutes. Aspirin-based carbon quantum dots with blue fluorescence were obtained.
[0029] (2) Separation and purification of carbon quantum dots: add 60 mL of deionized water to the carbon quantum dots prepared in step (1), ultrasonically disperse the product, separate and purify the prepared carbon quantum dots with a molecular weight of 3500, and dialysis for 7 Days later, the obtained product was filtered with a water-based filter head with a particle size of 0.45 μm, concentrated to 5 mL after rotary evaporation, and then freeze-dried to obtain aspirin-based carbon quantum dot powder (brown yellow), with a yield of about 40 mg. After infrared testing, it can be seen that carbon quantum dots retain the acetyl g...
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