A kind of fluorescent sericin platinum nanocluster and its preparation method and application
A platinum nanometer and fluorescent wire technology, applied in nanotechnology, nanotechnology, fluorescence/phosphorescence, etc., can solve the problems of long time, expensive instruments, cumbersome pre-processing, etc., and achieve less sample consumption, low detection cost, and production method. The effect of simple science
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Embodiment 1
[0037] Embodiment 1: Preparation of Sericin-Pt NCs
[0038] (1) Take 250 mg of sericin and add 5 mL of pure water to prepare a 50 mg / mL sericin solution. Take 5 mL of this solution and add 1 mL of 25 mM H 2 PtCl 6 Aqueous solution, vortex to mix thoroughly for 5min.
[0039] (2) Add 1M NaOH solution to the solution in the previous step to make the pH value 11. Add water to make up to 10mL, and vortex to mix again for 5min.
[0040] (3) Place the EP tube in a water bath at 60°C for 12 hours in the dark to obtain a polymer of platinum nanoclusters, centrifuge at 5,000 rpm for 10 minutes, and take the supernatant and store it in a refrigerator at 4°C in the dark for future use.
Embodiment 2
[0042](1) Take 125 mg of sericin and add 5 mL of pure water to prepare a 25 mg / mL sericin solution. Take 5 mL of this solution and add 1 mL of 50 mM H 2 PtCl 6 Aqueous solution, vortex to mix well for 10min.
[0043] (2) Add 1M NaOH solution to the solution in the previous step to make the pH value 10. Add water to make up to 10mL, and vortex to mix again for 5min.
[0044] (3) Place the EP tube in a water bath at 37°C for 8 hours in the dark to obtain a polymer of platinum nanoclusters, centrifuge at 5,000 rpm for 10 minutes, and take the supernatant and store it in a refrigerator at 4°C in the dark for future use.
Embodiment 3
[0046] (1) Take 250 mg of sericin and add 5 mL of pure water to prepare a 50 mg / mL sericin solution. Take 5 mL of this solution and add 1 mL of 100 mM H 2 PtCl 6 Aqueous solution, vortex to mix well for 10min.
[0047] (2) Add 1M NaOH solution to the solution in the previous step to make the pH value 12. Add water to make up to 10mL, and vortex to mix again for 5min.
[0048] (3) Place the EP tube in a 50°C water bath for 16 hours in the dark to obtain a polymer of platinum nanoclusters, centrifuge at 5,000 rpm for 10 minutes, and take the supernatant and store it in a 4°C refrigerator in the dark for future use.
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