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Ytterbium and thulium co-doped hydroxyapatite up-conversion luminescent material and preparation method thereof

A technology of hydroxyapatite and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., which can solve the problems of poor chemical and thermal stability of halides and sulfides, poor chemical stability and mechanical strength of fluorides, and difficulty in application To the laser medical field and other issues, to achieve the effect of convenient evaluation, optimized physical and chemical properties, and convenient industrial production

Pending Publication Date: 2020-01-31
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical stability and mechanical strength of fluoride are poor, and the manufacturing process is difficult
The chemical and thermal stability of halides and sulfides are poor, the preparation process is complicated, the pollution is serious, and the production cost is high
These are not easy to apply to the laser medical field

Method used

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  • Ytterbium and thulium co-doped hydroxyapatite up-conversion luminescent material and preparation method thereof
  • Ytterbium and thulium co-doped hydroxyapatite up-conversion luminescent material and preparation method thereof
  • Ytterbium and thulium co-doped hydroxyapatite up-conversion luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The ytterbium-thulium co-doped hydroxyapatite up-conversion luminescent material of the present invention has a chemical formula of Ca 10(1-x-y) Yb 10x T m 10y (PO 4 ) 6 (OH) 2 , where x=0.05, y=0.001. Its concrete preparation steps are as follows:

[0026] 1) Weigh and take 0.6901g (6mmol) (NH 4 ) 2 HPO 4 , 1.0532g (9.49mmol) CaCl 2 , measure 1.25mL of Yb(NO 3 ) 3 solution (containing Yb(NO 3 ) 3 0.5mmol) and 0.1mL Tm(NO 3 ) 3 Solution (with Tm(NO 3 ) 3 0.01 mmol) was dissolved in 50 mL of distilled water, stirred for 10 min, and ultrasonically dispersed for 20 min to obtain a mixed solution A.

[0027] 2) Under the condition of magnetic stirring, adjust the pH value of the mixed solution A to 11 with a NaOH solution with a concentration of 2M, and after stirring for 2 hours, a white suspension B is obtained;

[0028] 3) After the white suspension B was left to stand for 12 hours, pour out the upper liquid, and the bottom turbid liquid was centrifug...

Embodiment 2

[0032] The ytterbium-thulium co-doped hydroxyapatite up-conversion luminescent material of the present invention has a chemical formula of Ca 10(1-x-y) Yb 10x T m 10y (PO 4 ) 6 (OH) 2 , where x=0.13, y=0.010. Its concrete preparation steps are as follows:

[0033] 1) Weigh and take 0.6901g (6mmol) (NH 4 ) 2 HPO 4 , 0.954g (8.6mmol) CaCl 2 , measure 3.25mL of Yb(NO 3 ) 3 solution (containing Yb(NO 3 ) 3 1.3mmol) and 1.0mL Tm(NO 3 ) 3 Solution (with Tm(NO 3 ) 3 0.1 mmol) was dissolved in 50 mL of distilled water, stirred for 10 min, and ultrasonically dispersed for 20 min to obtain a mixed solution A.

[0034] 2) Under the condition of magnetic stirring, adjust the pH value of the mixed solution A to 11 with a 3M NaOH solution, and stir for 2 hours to obtain a white suspension B;

[0035]3) After the white suspension B was left to stand for 12 hours, pour out the upper liquid, and the bottom turbid liquid was centrifuged to settle, and the obtained white prec...

Embodiment 3

[0038] The ytterbium-thulium co-doped hydroxyapatite up-conversion luminescent material of the present invention has a chemical formula of Ca 10(1-x-y) Yb 10x T m 10y (PO 4 ) 6 (OH) 2 , where x=0.2, y=0.02. Its concrete preparation steps are as follows:

[0039] 1) Weigh and take 0.6901g (6mmol) (NH 4 ) 2 HPO 4 , 0.8656g (7.8mmol) CaCl 2 , measure 5mL of Yb(NO 3 ) 3 solution (containing Yb(NO 3 ) 3 2mmol) and 2mL Tm(NO 3 ) 3 Solution (with Tm(NO 3 ) 3 0.2 mol) was dissolved in 50 mL of distilled water, stirred for 10 min, and ultrasonically dispersed for 20 min to obtain a mixed solution A.

[0040] 2) Under the condition of magnetic stirring, adjust the pH value of the mixed solution A to 12 with a NaOH solution having a concentration of 2 mol / L, and after stirring for 2 hours, a white suspension B is obtained;

[0041] 3) After the white suspension B was left to stand for 12 hours, pour out the upper liquid, and the bottom turbid liquid was centrifuged to...

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Abstract

The invention relates to a ytterbium thulium co-doped hydroxyapatite up-conversion luminescent material and a preparation method thereof. The chemical formula of the ytterbium and thulium co-doped hydroxyapatite up-conversion luminescent material is Ca10(1-x-y)Yb10xTm10y(PO4)6(OH)2, x is more than or equal to 0.05 and less than or equal to 0.20, and y is more than or equal to 0.001 and less than or equal to 0.02. The preparation process is simple, low in production cost, and excellent in physical and chemical properties; the chemical property is similar to that of autologous bone; the ytterbium thulium co-doped hydroxyapatite up-conversion luminescent material is high in surface activity and biological activity, can radiate light with the wavelength of 806 nm under the excitation of laserwith the wavelength of 980 nm, avoids damage of ultraviolet excitation of quantum dots to cell or tissue irradiation and induced autofluorescence in the medical field, realizes zero-background detection and has important significance in the field of laser medicine.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to a ytterbium-thulium co-doped hydroxyapatite up-conversion luminescent material and a preparation method thereof. Background technique [0002] The currently existing image inspection methods are X-ray film, CT, and magnetic resonance imaging, but the three image inspection methods have their own shortcomings. Both X-ray film and CT are based on the principle of X-ray imaging, and X-ray imaging Harmful to the human body. X-rays have the potential to induce leukemia, cancer or other genetic diseases. Although there is no harm in this aspect of magnetic resonance imaging, during the examination process, voluntary or involuntary activities of the patient can cause motion artifacts and affect the diagnosis. Therefore, in terms of medical imaging examination, people still need to make further efforts to explore safer, advanced and convenient imaging examination methods....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71
CPCC09K11/7778
Inventor 谢颖缪菊红李士泽梁世芃
Owner NANJING UNIV OF INFORMATION SCI & TECH
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