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A preparing method of a nanometer near-infrared long-afterglow material

A long afterglow material and near-infrared light technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of too large particles, hinder development, agglomeration, etc., and achieve the effects of simple preparation, good performance and low calcination temperature

Inactive Publication Date: 2018-12-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, their synthesis methods are usually high-temperature solid-phase methods, which can only obtain micron-scale long-lasting luminescent materials.
And the resulting long-lasting luminescent material will show obvious agglomeration phenomenon
This has the disadvantage of too large particles in biological imaging applications, which hinders its development in the field of biological imaging

Method used

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  • A preparing method of a nanometer near-infrared long-afterglow material
  • A preparing method of a nanometer near-infrared long-afterglow material
  • A preparing method of a nanometer near-infrared long-afterglow material

Examples

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Embodiment 1

[0018] Na 2 CO 3 (analytical pure) and Ga 2 o 3 (Analytical pure) Take the material according to the molar ratio of 1:1, grind and mix it evenly, dry it, put it into a corundum crucible, and calcinate it at 850°C for 12 hours in a high-temperature furnace to obtain NaGaO 2 Powder, make it into 0.1mol L -1 of the suspension. Then measure an appropriate amount of 0.05mol·L -1 Zn(CH 3 COO) 2 and 0.02mol·L -1 Cr(CH 3 COO) 3 solution with 10mL of the above-prepared NaGaO 2 The solutions were mixed and ion-exchanged at room temperature for 3 h with a stirring speed of 500 rpm. After stirring, it was transferred to a reaction kettle, subjected to hydrothermal reaction at 200°C for 10h, centrifuged at 9000rpm, washed alternately with water and ethanol for 3 times, and then dried in a vacuum oven at 50°C for 10h to obtain the target product.

[0019] Utilize X-ray diffraction to analyze the material obtained in embodiment 1, the result is as follows figure 1 As shown in ,...

Embodiment 2

[0021] Na 2 CO 3 (analytical pure) and Ga 2 o 3 (Analytical pure) Take the material according to the molar ratio of 1:1, grind and mix it evenly, dry it, put it into a corundum crucible, and calcinate it at 850°C for 12 hours in a high-temperature furnace to obtain NaGaO 2 Powder, make it into 0.1mol L -1 of the suspension. Then measure an appropriate amount of 0.05mol·L -1 Zn(CH 3 COO) 2 and 0.02mol·L -1 Cr(CH 3 COO) 3 solution with 10mL of the above-prepared NaGaO 2 The solutions were mixed and ion-exchanged at room temperature for 3 h with a stirring speed of 500 rpm. After stirring, transfer it to a reaction kettle, conduct a hydrothermal reaction at 200°C for 10h, centrifuge at 9000rpm, wash alternately with water and ethanol for 3 times, and place the precipitate in a vacuum drying oven at 50°C for 10h to obtain a powder sample. In order to improve the long-lasting luminescent properties of the obtained samples, they were placed in a muffle furnace and calci...

Embodiment 3

[0024] Na 2 CO 3 (analytical pure) and Ga 2 o 3 (Analytical pure) Take the material according to the molar ratio of 1:1, grind and mix it evenly, dry it, put it into a corundum crucible, and calcinate it at 850°C for 12 hours in a high-temperature furnace to obtain NaGaO 2 Powder, make it into 0.1mol L -1 of the suspension. Then measure an appropriate amount of 0.05mol·L -1 Zn(CH 3 COO) 2 and 0.02mol·L -1 Cr(CH 3 COO) 3 solution with 10mL of the above-prepared NaGaO 2 The solutions were mixed and ion-exchanged at room temperature for 3 h with a stirring speed of 500 rpm. After stirring, transfer it to the reaction kettle, conduct a hydrothermal reaction at 200°C for 8 hours, centrifuge at 9000rpm, wash the precipitate with water and ethanol alternately for 3 times, and dry it in a vacuum oven at 50°C for 10 hours to obtain a powder sample. In order to improve the long-lasting luminescent properties of the obtained samples, they were placed in a muffle furnace and ...

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Abstract

The invention relates to a long-afterglow luminescent material, and particularly provides a preparing method of a nanometer near-infrared long-afterglow material. The method includes mixing Na2CO3, Ga2O3 and GeO2 according to a stoichiometric ratio; grinding and calcining the mixture to obtain Na2Ga<2(1-x-y)>Ge<x>O<4-x> powder; preparing a suspension from the powder; mixing the suspension with Zn(CH3COO)2 and Cr(CH3COO)3 in a stoichiometric ratio to perform ion exchange to obtain a precursor of the near-infrared long-afterglow material; and calcining the precursor, or transferring the precursor to a reaction kettle with a polytetrafluoroethylene liner, performing a hydrothermal reaction and centrifugation, then washing a product with water and ethanol alternatively, drying a product and calcining the product to obtain the nanometer near-infrared long-afterglow material. The method is simple, the calcining temperature is relatively low, and the prepared nanoparticles have good afterglowperformance and are prone to large-scale promotion and application.

Description

technical field [0001] The invention relates to a long afterglow luminescent material, in particular to a preparation method of a nanometer-sized near-infrared light long afterglow material. Background technique [0002] Long afterglow luminescent materials have the characteristic of being able to continue to emit light even after the excitation of the light source is stopped, which has attracted widespread attention. Compared with blue and green long-lasting materials, the progress of red and near-infrared long-lasting materials is relatively slow. In 2007, French scientists applied red light long-lasting materials to the field of biological imaging, opening a new chapter in the application of long-lasting materials ([1]Chermont Q M, Chanéac C, Seguin J, et al. Nanoprobes with near-infraredpersistent luminescence for in vivo imaging. Proceedings of the National Academy of Sciences, 2007, 104(22): 9266-9271.). Thanks to the characteristics of long-lasting materials that ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68
CPCC09K11/68
Inventor 解荣军吕营庄逸熙周天亮李烨
Owner XIAMEN UNIV
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