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Manganese complexes as x-ray scintillator materials and their applications in the preparation of flexible x-ray scintillator films

A scintillator material, manganese complex technology, applied in the directions of luminescent materials, polycrystalline material growth, crystal growth, etc., can solve the problems of increased self-absorption, low Stokes shift, etc., to reduce the preparation cost and stability. The effect of good and excellent photoluminescence properties

Active Publication Date: 2022-06-28
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the ability to detect low X-ray signals, it is necessary to increase the thickness of the active layer of perovskite nanocrystals, but the self-absorption is significantly increased due to the very low Stokes shift of perovskite nanocrystals.

Method used

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  • Manganese complexes as x-ray scintillator materials and their applications in the preparation of flexible x-ray scintillator films
  • Manganese complexes as x-ray scintillator materials and their applications in the preparation of flexible x-ray scintillator films
  • Manganese complexes as x-ray scintillator materials and their applications in the preparation of flexible x-ray scintillator films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh manganese bromide (0.4295g, 2mmol) and tetraphenylphosphine bromide (C 24 H 20 BrP, 1.424 g, 4 mmol) in a molar ratio of 1:2, and the drug was dissolved in 10 mL of dichloromethane with stirring at room temperature. After the drug is completely dissolved, use a syringe to filter the mixed solution to remove impurities and undissolved particles. The filtered solution was placed openly in a container with 60 mL of anhydrous ether, left standing for three days, until the solvent was all volatilized completely to obtain (C 24 H 20 P) 2 [MnBr 4 ] Green manganese complex crystals. Yield 90.15%. preparation process such as figure 1 shown. The structure is as follows:

[0045]

Embodiment 2

[0047] The manganese complex crystal obtained in Example 1 was ground into powder with a mortar, and the powder with a particle size of 30 μm was sieved with a 30 μm aperture sieve for collection. The powder is uniformly stirred and mixed with PDMS at 20% by mass (monomer:curing agent=10:1) to obtain a mixed precursor. Centrifuge the mixed precursor at 500 r / min for 5 min to deposit larger particles into the lower layer, take the upper layer of the precursor and pour it into a 5cm×8cm rectangular template, place it and cure it at 80°C for 4 hours to obtain a thickness of 1-2mm. flexible scintillator films.

Embodiment 3

[0049] The preparation method is basically the same as that in Example 2, except that the crystal powder is uniformly stirred and mixed with PDMS at 10% by mass (monomer:curing agent=10:1) to prepare the flexible scintillator film.

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Abstract

The invention discloses the application of manganese complex as X-ray scintillator material and preparation of flexible X-ray scintillator film. The structure of the manganese complex is shown in formula (I), wherein R 1 , R 2 , R 3 and R 4 Each is independently an alkyl group or an aryl group; A is N or P; X is F, Cl, Br or I. The manganese complex of the invention has the advantages of low preparation cost, excellent photoluminescent performance, good stability, environmental friendliness and the like.

Description

technical field [0001] The invention relates to a manganese complex as an X-ray scintillator material and its application in preparing a flexible X-ray scintillator film. Background technique [0002] Scintillators are a class of materials that can absorb high-energy particles (kiloelectron volts, such as X-rays, gamma rays, etc.) and convert them into low-energy photons (such as visible light, ultraviolet light, etc.), so they can be used for high-energy particle detection. There are many applications of scintillators, including medical imaging, non-destructive testing, security inspection, radiation protection, astronomical research, geological exploration, nuclear physics, high-energy physics research, and more. For example: radiation exposure monitoring, safety inspections, X-ray astronomy and medical X-ray imaging. However, the materials used for scintillators for X-ray imaging are inorganic scintillator bulk crystals, and are grown above 1700°C by the Czochralski meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C09K11/02C30B29/54
CPCC09K11/06C09K11/025C30B29/54C09K2211/188
Inventor 潘军王雯雯何晓雄杨中林张楠张红燕曲康
Owner ZHEJIANG UNIV OF TECH
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