Water-soluble rare earth ion doped zirconium dioxide nano fluorescence labeling material and preparation method thereof
A zirconium dioxide and nano-fluorescence technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of large particle size, inability to realize the application of zirconium dioxide nano-materials, and no water-soluble luminous efficiency, etc., and achieve uniform particle size. , good water solubility and biocompatibility, small size effect
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example 1
[0014] Example 1: ZrO 2 : 0.05% Eu 3+ Preparation of Nanocrystals. Add 1.79 mL of n-propanol solution containing 70% zirconium n-propoxide, 0.0012 g of europium acetate and 20 mL of benzyl alcohol into a 50 mL polytetrafluoroethylene reactor, stir to mix evenly, and heat the above mixture to 230 ° C, kept at this temperature for 72 hours to make it fully react and precipitate, after cooling to room temperature naturally, centrifuge, and wash with ethanol several times. Obtain monodisperse, particle size less than 10 nm, tetragonal ZrO 2 : 0.05% Eu 3+ Nanocrystalline. The prepared nanocrystals were dispersed into 20 mL cyclohexane for later use. Use a spectrometer to detect its luminescence, and by exciting the zirconia matrix (excitation wavelength ~277 nm), the strong red luminescence of europium ions can be obtained.
example 2
[0015] Example 2: ZrO 2 : 0.5%Tb 3+ Preparation of Nanocrystals. Add 1.79 mL of n-propanol solution containing 70% zirconium n-propoxide, 0.012 g of terbium acetate and 20 mL of benzyl alcohol into a 50 mL polytetrafluoroethylene reactor, stir to mix evenly, and heat the above mixture to 230 ℃, kept at this temperature for 72 hours to allow it to fully react and precipitate, and after naturally cooling to room temperature, centrifuge and wash with ethanol for several times. Obtain monodisperse, particle size less than 10 nm, tetragonal ZrO 2 : 0.5% Tb 3+ Nanocrystalline. The prepared nanocrystals were dispersed into 20 mL cyclohexane for later use. The luminescence was detected by a spectrometer, and the strong green luminescence of terbium ions could be obtained by exciting the zirconia matrix (excitation wavelength ~277 nm).
example 3
[0016] Example 3: ZrO 2 : 4% Eu 3+ Preparation of Nanocrystals. Add 1.79 mL of n-propanol solution containing 70% zirconium n-propoxide, 0.0936 g of europium acetate and 20 mL of benzyl alcohol into a 50 mL polytetrafluoroethylene reactor, stir to mix evenly, and heat the above mixture to 230 ℃, kept at this temperature for 72 hours to allow it to fully react and precipitate, and after naturally cooling to room temperature, centrifuge and wash with ethanol for several times. Obtain monodisperse, particle size less than 10 nm, tetragonal ZrO 2 : 4%Eu 3+ Nanocrystalline. The prepared nanocrystals were dispersed into 20 mL cyclohexane for later use. Use a spectrometer to detect its luminescence, and by exciting the zirconia matrix (excitation wavelength ~277 nm), the strong red luminescence of europium ions can be obtained.
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