Nanometer material as well as preparation method and application thereof
A nano-material and reaction technology, applied in the field of nano-biomedical materials, can solve problems affecting the distribution and metabolism of diagnostic and therapeutic materials, poor dispersion and aggregation of products, and complicated preparation process, so as to improve imaging and treatment effects, reduce synthesis steps and synthesis time , the effect of simple reaction conditions
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[0088] In a second aspect, in at least one embodiment, a method for preparing the aforementioned nanomaterial is provided, comprising the following steps:
[0089] (a) BSA:RE 1 , RE 2 The synthesis of: the BSA solution, RE 1 Saline solution and RE 2 After the salt solution is mixed evenly, the pH of the mixed solution is adjusted to alkaline, and BSA:RE is obtained after the reaction 1 , RE 2 ;
[0090] (b)BSA:RE 1 , RE 2 Synthesis of @PDA: dopamine salt solution and BSA:RE 1 , RE 2 After the solution is mixed evenly, the pH of the mixed solution is adjusted to alkaline, and BSA:RE is obtained after the reaction 1 , RE 2 @PDA;
[0091] (c)BSA:RE 1 , RE 2 Synthesis of @PDA-FA: Combine activated FA with BSA:RE 1 , RE 2 @PDA solution is mixed and reacted in the dark, and BSA:RE is obtained after the reaction 1 , RE 2 @PDA-FA nanomaterials.
[0092] In the above preparation method, BSA can be combined with rare earth ion RE through biomineralization method 1 and...
Embodiment 1
[0140] A kind of nanometer material BSA:Gd, Dy@PDA-FA, its preparation method comprises the following steps:
[0141] (a) Synthesis of BSA: Gd, Dy: In a 37°C water bath, take 300 mg of BSA in a 50 ml flask, add 10 ml of deionized water to dissolve it; take another 30 mg of GdCl 3 ·6H 2 O and 30 mg DyCl 3 ·6H 2 O was dissolved in 10 ml of water, slowly added to the above BSA solution under vigorous stirring, and the reaction solution became cloudy gradually. After two minutes, sodium hydroxide solution (1M, 1 ml) was quickly added to the reaction solution to adjust the pH value to 12. Become transparent, continue to react under vigorous stirring for 6 hours, and finally perform dialysis through deionized water, changing the water every 4 hours to remove excess Gd 3+ and Dy 3+ , to obtain BSA:Gd,Dy nanoparticles.
[0142] (b) Synthesis of BSA:Gd,Dy@PDA: adjust the pH value to 8.5 by Tris, add 45 mg of dopamine hydrochloride aqueous solution dissolved in 10 ml of deionized w...
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