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Cr-doped nano near infrared long-persistence material and preparation method thereof

A foreign and nanotechnology, applied in the fields of nanotechnology, nanotechnology, luminescent materials, etc. for materials and surface science, can solve the problems of impossible application of production practice, increase of nanoparticles, expensive raw materials, etc., to achieve easy large-scale The effect of technology promotion, good particle stability and low cost

Active Publication Date: 2014-07-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The recently developed near-infrared long-lasting materials are limited to high-temperature solid-state sintering, and even nano-scale long-lasting materials inevitably encounter the problems of expensive raw materials, which are not conducive to popularization, and are even less likely to be applied in production practice.
At the same time, we also found that the current preparation of nano-long afterglow materials inevitably encounters the problem of high-temperature sintering resulting in the increase of nanoparticles. Therefore, it is necessary to develop and improve the application of near-infrared long-afterglow materials in biological imaging. Preparation technology development of low-cost nano near-infrared long afterglow materials

Method used

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  • Cr-doped nano near infrared long-persistence material and preparation method thereof
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  • Cr-doped nano near infrared long-persistence material and preparation method thereof

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Embodiment 1

[0029] The Cr-doped nano near-infrared long afterglow material of this embodiment, the base material is Zn (2-x) al 2x sn (1-x) o 4 , x=0.01; Doping ion Cr 3+ is the active ion, where Cr 3+ The doping amount is 0.01mol%.

[0030] The preparation method of the Cr-doped nano near-infrared long afterglow material of the present embodiment is as follows:

[0031] (1) Using zinc acetate, aluminum nitrate, tin chloride, and chromium nitrate as raw materials, weigh the raw materials and add 20g of water and alcohol to the mixed solution, stir at room temperature for 30 minutes, then add acetylacetone, and stir at room temperature for 1 hour Obtain mixed solution, wherein the pH value of mixed solution is controlled at 2; Wherein, the mol ratio of acetylacetone and the metal ion total amount in mixed solution is 1:1; In the mixed solution of described water and alcohol, the volume of water and alcohol Ratio=1:1;

[0032] (2) Dry the mixed solution obtained in step (1) in an ove...

Embodiment 2

[0038] The Cr-doped nano near-infrared long afterglow material of this embodiment, the base material is Zn (2-x) al 2x sn (1-x) o 4 , x=0.1; Doping ion Cr 3+ is the active ion, where Cr 3+ The doping amount is 0.05mol%.

[0039] The preparation method of the Cr-doped nano near-infrared long afterglow material of the present embodiment is as follows:

[0040](1) Using zinc acetate, aluminum nitrate, tin chloride, and chromium nitrate as raw materials, weigh the raw materials and add 20g of water and alcohol to the mixed solution, stir at room temperature for 10 minutes, then add acetylacetone, and stir at room temperature for 1 hour Obtain mixed solution, wherein the pH value of mixed solution is controlled at 4; Wherein, the mol ratio of acetylacetone and the metal ion total amount in mixed solution is 1:1; In the mixed solution of described water and alcohol, the volume of water and alcohol Ratio=1:0.5;

[0041] (2) Dry the mixed solution obtained in step (1) in an ove...

Embodiment 3

[0047] The Cr-doped nano near-infrared long afterglow material of this embodiment, the base material is Zn (2-x) Al 2x sn (1-x) o 4 , x=0; Doping ion Cr 3+ is the active ion, where Cr 3+ The doping amount is 0.01mol%.

[0048] The preparation method of the Cr-doped nano near-infrared long afterglow material of the present embodiment is as follows:

[0049] (1) Using zinc acetate, tin chloride, and chromium nitrate as raw materials, weigh the raw materials and add them to a mixed solution of 20g of water and alcohol, stir at room temperature for 30 minutes, then add acetylacetone, and stir at room temperature for 1 hour to obtain a mixed solution , wherein the pH value of the mixed solution is controlled at 4; wherein the mol ratio of acetylacetone and the total amount of metal ions in the mixed solution is 1:1; in the mixed solution of water and alcohol, the volume ratio of water and alcohol is = 1:1;

[0050] (2) Dry the mixed solution obtained in step (1) in an oven a...

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Abstract

The invention discloses a Cr-doped nano near infrared long-persistence material. A base material is Zn(2-x)Al2xSn(1-x)O4, wherein x is more than or equal to 0 and less than or equal to 1, the doped ion Cr<3+> is an active ion, and the doping amount of the Cr<3+> is 0.01-0.05mol%. The invention also discloses a method for preparing the Cr-doped nano near infrared long-persistence material. The nano near infrared long-persistence material prepared by the invention has the particle size being less than 100nm and is high in monodispersity and excellent in uniformity, the particles are not aggregated after being sintered at a high temperature of over 1000 DEG C, the stability of the particles is high, the persistence time is more than 150 hours, and the Cr-doped nano near infrared long-persistence material can be well applied to the field of bioimaging and is low in cost.

Description

technical field [0001] The invention relates to an infrared long-lasting nanometer material, in particular to a Cr-doped nanometer near-infrared long-lasting material and a preparation method thereof. Background technique [0002] With the development of biomedical research, the requirements for research objects are getting higher and higher. Biomedical researchers hope to directly observe the physiological and biological processes that occur in living bodies or small animals. Optical imaging, using photons as an information source, represents a rapidly expanding field with direct applications in pharmacology, molecular cell biology, and diagnostics. However, this technique still has many limitations, especially the tissue autofluorescence produced by in vivo illumination and the weak tissue permeability under short-wave excitation light irradiation. In order to overcome these difficulties, scientists have studied a series of inorganic light-emitting materials, which emit l...

Claims

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Application Information

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IPC IPC(8): C09K11/66B82Y30/00B82Y40/00
Inventor 邱建荣李杨李意扬董国平
Owner SOUTH CHINA UNIV OF TECH
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