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Near-infrared high-afterglow material and preparation method thereof

A near-infrared and afterglow technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of short afterglow time and weak afterglow intensity, and achieve the effect of enhanced afterglow intensity, uniform distribution, and improved afterglow performance.

Active Publication Date: 2017-08-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of weak afterglow intensity and short afterglow time of existing near-infrared long afterglow materials, and provides a near-infrared high afterglow material and a preparation method thereof

Method used

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  • Near-infrared high-afterglow material and preparation method thereof
  • Near-infrared high-afterglow material and preparation method thereof
  • Near-infrared high-afterglow material and preparation method thereof

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specific Embodiment approach 1

[0020] Specific embodiment one: the molecular formula of the near-infrared high afterglow material of this specific embodiment is (Zn 1-x Ca x ) 3 (Ga 0.995 Cr 0.005 ) 2 Ge 2 o 10 , where 0.01≤x≤0.03.

specific Embodiment approach 2

[0021] Embodiment 2: The preparation method of the near-infrared high afterglow material described in Embodiment 1 is carried out in the following steps:

[0022] 1. Mix zinc oxide, calcium oxide, gallium oxide, chromium oxide and germanium oxide according to the molar ratio of (3-3x): 3x: 0.995: 0.005: 2 to obtain a mixture; wherein 0.01≤x≤0.03;

[0023] 2. After adding the mixture into water and heating to boiling, add nitric acid with a mass percentage concentration of 65% dropwise under stirring until all solid particles in the solution disappear, and cool to room temperature to obtain an oxide solution;

[0024] 3. Take water, ethanol and oleic acid according to the volume ratio of 1: (4-5): (3-5), first mix the water and ethanol evenly, then add oleic acid and mix evenly to obtain a mixed solvent; The oxide solution is added to the mixed solvent, and mixed evenly to obtain a mixed solution;

[0025] 4. Add the mixed solution obtained in step 3 into the hydrothermal kett...

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the total mass percent concentration of oxides in the oxide solution in Step 2 is 30%-41%; other aspects are the same as Embodiment 2.

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Abstract

The invention relates to a near-infrared high-afterglow material and a preparation method thereof and aims to solve the technical problem that existing near-infrared long-afterglow materials are weak in afterglow intensity and short in afterglow time. A molecular formula of the near-infrared high-afterglow material is (Zn1-xCax)3(Ga0.995Cr0.005)2G22O10, wherein x is greater than or equal to 0.01 and smaller than or equal to 0.03. The preparation method includes: well mixing zinc oxide, calcium oxide, gallium oxide, chromium oxide and germanium oxide according to a chemical dosage ratio, adding a mixture into water, boiling the water, and adding nitric acid to dissolve the oxides to obtain a solution; mixing the solution with a mixed solution of water, alcohol and oleic acid to obtain a mixed solution, and performing hydrothermal reaction to obtain a solid-phase product; subjecting the solid-phase product to pre-sintering and high-temperature sintering to obtain the near-infrared high-afterglow material. The near-infrared high-afterglow material can be used in the technical field of bioluminescent imaging.

Description

technical field [0001] The invention relates to a material with high afterglow performance and a preparation method thereof. Background technique [0002] Bio-optical imaging technology plays an indispensable role in contemporary medical care. Along with the requirements of high-precision and high-quality bio-optical imaging, many new imaging devices, imaging methods and fluorescent probes are emerging, but now bio-optical The development of imaging is in a bottleneck period, because the shortcomings of traditional fluorescent probes such as photobleaching, luminescence instability, and low signal-to-noise ratio due to tissue autofluorescence effect limit the development of bio-optical imaging, and modern medical optical detection The working area of ​​the fluorescent probe is required to work in the near-infrared region of the biological transmission window (700-1000nm and 1100-1350nm) in order to increase the deep tissue transmittance of the detection light, and use the ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68
CPCC09K11/684
Inventor 李德洋许虎陈冠英
Owner HARBIN INST OF TECH
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