A near-infrared sulfide long-lasting luminescent material and its preparation method and application

A long afterglow luminescence, sulfide technology, applied in luminescent materials, chemical instruments and methods, pharmaceutical formulations, etc., can solve the problems of few luminescent centers, complex processes, unfavorable production, etc., and achieve easy large-scale technology promotion and simple preparation process. Effect

Active Publication Date: 2022-03-25
GUANGDONG UNIV OF TECH
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Problems solved by technology

However, there are still very few types of near-infrared sulfide long-lasting materials with excellent performance and few luminescent centers. Therefore, it is necessary to develop new near-infrared sulfide long-lasting materials with excellent performance, and the existing near-infrared sulfide long-lasting The process of afterglow materials is complicated, which is not conducive to the promotion of production

Method used

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  • A near-infrared sulfide long-lasting luminescent material and its preparation method and application
  • A near-infrared sulfide long-lasting luminescent material and its preparation method and application
  • A near-infrared sulfide long-lasting luminescent material and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0031] According to the following composition: Matrix is ​​ZnGa 2 S 4 , Cr 3+ The doping amount is 0.1mol%; respectively weigh Ga 2 S 3 1.4133g, ZnS 0.5852g and Cr 2 O 3 0.0004g was heated to 1160°C at room temperature under a sulfur atmosphere (raw material: mass ratio of sublimated sulfur = 1:5) after grinding and mixing, and calcined for 3 hours. During the cooling process, when the pressure dropped to the equilibrium pressure, argon was introduced Always keep the furnace tube pressure at a slightly positive pressure state. The prepared near-infrared sulfide long afterglow luminescent material is ZnGa 2 S 4 : 0.1mol% Cr 3+ .

Embodiment 2

[0033] This embodiment is basically the same as the embodiment 1, the difference is that according to the following components: the matrix is ​​ZnGa 2 S 4 , Cr 3+ The doping amount is 0.5mol%, respectively weighing Ga 2 S 3 1.4077g, ZnS 0.5852g and Cr 2 O 3 0.0023g, the prepared near-infrared sulfide long afterglow luminescent material is ZnGa 2 S 4 : 0.5mol% Cr 3+ .

Embodiment 3

[0035] This embodiment is basically the same as the embodiment 1, the difference is that according to the following components: the matrix is ​​ZnGa 2 S 4 , Cr 3+ The doping amount is 1mol%, respectively weighing Ga 2 S 3 1.4006g, ZnS 0.5852g and Cr 2 O 3 0.0046g, the prepared near-infrared sulfide long afterglow luminescent material is ZnGa 2 S 4 : 1mol%Cr 3+ .

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Abstract

The invention discloses a near-infrared sulfide long afterglow luminescent material, which uses ZnGa 2 S 4 As the substrate, the substrate is doped with 0.1-5.0mol% Cr 2 o 3 , whose structural formula is =ZnGa 2 S 4 :xCr 3+ , x=0.1~5.0mol%. Grinding and mixing gallium sulfide, zinc sulfide and chromium oxide in a molar ratio of 1:1:0.0004-0.025 and putting them into a reaction vessel, calcining at 1100-1200°C for 2-4 hours in a sulfur atmosphere, cooling down , that is. The present invention achieves near-infrared long afterglow luminescence by doping trivalent chromium ions. The afterglow luminescence peak is located at the 740nm luminescence peak, and the afterglow decay time is as long as 600s. Application prospects.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, and more particularly, to a near-infrared sulfide long afterglow luminescent material and a preparation method and application thereof. Background technique [0002] With the continuous development of medical precision instruments and equipment, optical imaging has been widely used in in vivo optical imaging of animals due to its unique advantages such as high sensitivity, portability, non-invasiveness, and time validity. However, at present, in vivo fluorescence imaging of animals mainly faces two requirements: (1) The working area of ​​the fluorescent probe is the near-infrared light region of the biological transmission window (600-1000 nm and 1100-1350 nm) to increase the deep tissue transmission of light. (2) The excitation light source of fluorescent probes should not use short wavelengths to avoid tissue autofluorescence. The long afterglow luminescent material is a special ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/62A61K49/00
CPCC09K11/682A61K49/0019
Inventor 彭国鑫李杨赵韦人窦晓静林晓卉
Owner GUANGDONG UNIV OF TECH
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