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Preparation method of near-infrared long afterglow luminescent nanometer particle

A nanoparticle and external length technology, which is applied in the field of preparation of near-infrared long-lasting luminescent nanoparticles, can solve the problems that are not conducive to the biological tissue penetration ability of long-lasting nanoparticles, the large size of long-lasting nanoparticles, and the difficulty of optical imaging. , to achieve the effect of low cost, long afterglow time and small particle size

Inactive Publication Date: 2017-04-26
喀什大学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the long-lasting nanoparticles prepared by these methods have large size, difficult size control, and poor dispersion, which is not conducive to the biological tissue penetration ability of long-lasting nanoparticles, and it is difficult to achieve "excitation-free" high-sensitivity in vivo. Noise Ratio Optical Imaging

Method used

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  • Preparation method of near-infrared long afterglow luminescent nanometer particle
  • Preparation method of near-infrared long afterglow luminescent nanometer particle

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A method for preparing near-infrared long-lasting luminous nanoparticles, which is prepared by a mesoporous silica template method, and the steps are as follows:

[0020] 1) Dissolving triblock copolymer surfactant P123 in hydrochloric acid solution and deionized aqueous solution with a concentration of 1.6 mol / liter to obtain a mixed solution, and then adding tetraethyl orthosilicate (TEOS) to the mixed solution, three The mass ratio of block copolymer surfactant P123, hydrochloric acid, deionized water and TEOS is 5:0.084:19:170, stirred in a water bath at 30°C for 24 hours, and then hydrothermally treated at 100°C for 48 hours. Calcined in a muffle furnace at 550°C for 5 hours to obtain mesoporous silica;

[0021] 2) the zinc nitrate aqueous solution with a concentration of 0.2 mol / liter, the gallium nitrate aqueous solution with a concentration of 0.2 mol / liter, the germanium ion solution with a concentration of 0.2 mol / liter, the chromium nitrate aqueous solution w...

Embodiment 2

[0027] A method for preparing near-infrared long-lasting luminescent nanoparticles, prepared by mesoporous silica template method, the steps and method are basically the same as in Example 1, the difference is: step 2) co-doped trivalent rare earth ion nitric acid The brine solution is an aqueous solution of praseodymium nitrate.

[0028] The long-lasting luminescent nanoparticles prepared in this example were taken as samples for observing afterglow and characterizing, and the test results were similar to Example 1.

[0029] The long-lasting luminescent nanoparticles prepared in this example were taken as samples for observing afterglow and characterizing, and the test results were similar to Example 1.

Embodiment 3

[0031] A method for preparing near-infrared long-lasting luminescent nanoparticles, prepared by mesoporous silica template method, the steps and method are basically the same as in Example 1, the difference is: step 2) co-doped trivalent rare earth ion nitric acid The brine solution is an aqueous solution of ytterbium nitrate.

[0032] The long-lasting luminescent nanoparticles prepared in this example were taken as samples for observing afterglow and characterizing, and the test results were similar to Example 1.

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Abstract

The invention relates to a preparation method of a near-infrared long afterglow luminescent nanometer particle. The near-infrared long lasting phosphorescent nanometer particle is prepared by adopting a mesoporous silica template method. The preparation method of the near-infrared long afterglow luminescent nanometer particle comprises the steps of firstly preparing mesoporous silica through a hydrothermal method; then adopting the silica as a carrier, adopting gallium and germanium zinc glycinate as a base material, uniformly stirring with a mixed solution codoped by chromium ions and rare earth ions, centrifugally separating, drying at the temperature of 80 DEG C, and carbonizing through a muffle furnace at the temperature of 550 DEG C; then using a sodium hydroxide solution for dissolving and removing a silica template in a sample, centrifugally separating a product once again, drying at the temperature of 80 DEG C, and finally calcining through the muffle furnace at the temperature of 700 DEG C; and preparing the near-infrared long afterglow luminescent nanometer particle with the average grain diameter being less than 10 nanometers. The preparation method of the near-infrared long afterglow luminescent nanometer particle provided by the invention has the advantages that the near-infrared long afterglow luminescent nanometer particle prepared by the method has excellent properties that the grain size is controllable, the grain diameter is smaller, an emission spectrum is within a near-infrared light area, the afterglow time is long, and the like; and the preparation method of the near-infrared long afterglow luminescent nanometer particle provided by the invention is simple to operate and low in cost, does not require reducing atmosphere during a preparation process, and has no pollution on the environment.

Description

technical field [0001] The invention belongs to the technical field of preparation of long afterglow luminescent materials, and in particular relates to a preparation method of near-infrared long afterglow luminescent nanoparticles. Background technique [0002] Persistent luminescence (persistent luminescence) refers to the phenomenon that the substance can continue to emit light after the excitation is stopped. Long afterglow luminescence is a special optical phenomenon, that is, a material that emits light for a long time in the visible or near-infrared region after being excited by high energy (visible light, ultraviolet light, X-rays, γ-rays, electron beams, etc.). The luminescent light slowly releases the stored energy in the form of light after the excitation light source stops exciting, and is widely used in lighting, information storage, high-energy ray detection, safety emergency instructions, transportation, safety and equipment marking and other fields. Although...

Claims

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Application Information

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IPC IPC(8): C09K11/79
CPCC09K11/7706
Inventor 阿不都卡德尔·阿不都克尤木艾力江·吐尔地
Owner 喀什大学
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