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A kind of crown ether rare earth photochromic material and preparation method thereof

A photochromic material, rare earth technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of serious energy consumption, low utilization rate, weak reducing atmosphere, etc. small effect

Active Publication Date: 2019-09-17
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of the above-mentioned color-changing material is complicated, the energy consumption is serious, the utilization rate is low, and the preparation method has a weak reducing atmosphere, which has certain dangers.

Method used

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  • A kind of crown ether rare earth photochromic material and preparation method thereof
  • A kind of crown ether rare earth photochromic material and preparation method thereof
  • A kind of crown ether rare earth photochromic material and preparation method thereof

Examples

Experimental program
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Effect test

experiment example 1

[0042] As shown in Table 1, prepare No. 1 mixed solution. Using a fluorescence spectrophotometer under the condition of 600V voltage and 0.5 / 0.5nm slit, the excitation light wavelengths are sequentially taken as 320nm, 340nm, 350nm, 370nm, 375nm, 380nm, 385nm, 390nm, and the luminous intensity of the No. 1 mixed solution is monitored, see figure 2 .

experiment example 2

[0044] As shown in Table 1, prepare No. 5 mixed solution. Using a fluorescence spectrophotometer under the condition of 600V voltage and 0.5 / 0.5nm slit, the excitation light wavelengths are successively taken as 370nm, 380nm, 390nm, 395nm, 400nm, 405nm, 410nm, and the luminous intensity of the No. 5 mixed solution is monitored, see image 3 .

experiment example 3

[0046] As shown in Table 1, prepare No. 1-5 mixed solution. Using a fluorescence spectrophotometer under the condition of 600V voltage and 0.5 / 0.5nm slit, the excitation light wavelengths are sequentially taken as 352nm, 377nm, and 395nm, and the luminous intensity of the mixed solution No. 1-5 is monitored respectively. See Figure 4-8 .

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Abstract

The invention provides a crown ether rare earth photochromic material and a preparation method thereof. The preparation method comprises the following steps of: step A. preparing an aza-crown ether ligand by using N-(2-aminoethyl)-1, 3-propane diamine and isophthalaldehyde as raw materials; and step B. dispersing the aza-crown ether ligand serving as a base material in a rare earth ion solution to prepare the rare earth photochromic material. The crown ether rare earth photochromic material is free of the influence of water environments, causes rare earth ions in a water solution to give out light and can realize color visualization change. The preparation method of the crown ether rare earth photochromic material is simple, environmentally friendly and safe.

Description

technical field [0001] The invention relates to the field of photochromic materials, in particular to a crown ether rare earth photochromic material and a preparation method thereof. Background technique [0002] my country is a country with a large rare earth resource in the world, with rich rare earth resources and complete varieties. As an important strategic material, rare earth materials play an extremely important role in the fields of communications, luminescent materials and military industry, and rare earth photochromic materials play an important role in people's production and life. It has a wide range of uses, such as three primary color phosphors for lamps, white LED phosphors, X-ray sensitive paper, etc. Compared with other luminescent materials, rare earth photochromic materials have the advantages of long fluorescence lifetime, stable luminescence, and low toxicity. [0003] However, water has an obvious photoquenching effect on rare earth ions, so the rare e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D259/00C09K9/02C07F5/00
Inventor 伊斐艳王士成吴梦柯
Owner NINGBO UNIV