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Manganese complex serving as X-ray scintillator material and application of manganese complex in preparation of flexible X-ray scintillator film

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

Active Publication Date: 2021-05-28
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 complex serving as X-ray scintillator material and application of manganese complex in preparation of flexible X-ray scintillator film
  • Manganese complex serving as X-ray scintillator material and application of manganese complex in preparation of flexible X-ray scintillator film
  • Manganese complex serving as X-ray scintillator material and application of manganese complex in preparation of flexible X-ray scintillator film

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Weigh manganese bromide (0.4295g, 2mmol) and tetraphenylphosphine bromide (C 24 h 20 BrP, 1.424g, 4mmol) The molar ratio is 1:2, and the drugs are stirred and dissolved in 10mL of dichloromethane in turn 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 in a 60mL anhydrous diethyl ether container, and left to stand for three days, until the solvent was completely volatilized to obtain (C 24 h 20 P) 2 [MnBr 4 ] Green manganese complex crystals. Yield 90.15%. The preparation process is 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 and collected through a sieve with an aperture of 30 μm. Stir and mix the powder with PDMS at 20% by mass (monomer:curing agent=10:1) to obtain a mixed precursor. Centrifuge the mixed precursor at 500r / min for 5min to deposit larger particles to the lower layer, take the upper layer 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 10% by mass of crystal powder is mixed with PDMS evenly (monomer:curing agent=10:1) to prepare a flexible scintillator film.

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Abstract

The invention discloses a manganese complex serving as an X-ray scintillator material and application of the manganese complex in preparation of a flexible X-ray scintillator film. The structure of the manganese complex is shown as a formula (I). In the formula (I), R1, R2, R3 and R4 are respectively and independently alkyl or aryl groups; A is N or P; and X is F, Cl, Br or I. The manganese complex disclosed by the invention has the advantages of low preparation cost, excellent photoluminescence 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 thin film. Background technique [0002] Scintillators are a class of materials that can absorb high-energy particles (keV, 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 the detection of high-energy particles. Scintillators have many applications, including medical imaging, non-destructive testing, safety inspection, radiation protection, astronomical research, geological exploration, nuclear physics, high-energy physics research, and more. Examples: Radiation Exposure Monitoring, Security Inspections, X-ray Astronomy, and Medical Radiography. However, the materials used in scintillators applied to X-ray imaging are inorganic scintillator bulk crystals, and are grown by the Czochralski method above 1700°C. The...

Claims

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Application Information

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Patent Type & Authority Applications(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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