Anti-fake rare earth luminescent material, preparation method, and application thereof

A rare earth luminescence and rare earth element technology, applied in luminescent materials, chemical instruments and methods, cards for carrying information, etc., can solve the problems of high economic cost of anti-counterfeiting technology, high cost of counterfeiting and copying, and high cost of anti-counterfeiting, and achieve the identification process. Simple and cheap, easy to quickly change and update, simple and diverse effects

Inactive Publication Date: 2017-09-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current popular anti-counterfeiting technologies mainly include: holographic anti-counterfeiting, laser anti-counterfeiting, special ink anti-counterfeiting and DNA logo anti-counterfeiting, etc. However, among these technologies, the technologies with outstanding anti-counterfeiting effects are expensive and have high anti-counterfeiting costs, and are often used in high-value commodities; Inexpensive anti-counterfeiting technology, easy to be seen through and copied by counterfeiters
The current anti-counterfeiting technology is not suitable for anti-counterfeiting of various bulk plastic products due to problems such as high anti-counterfeiting economic cost or poor reliability.

Method used

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  • Anti-fake rare earth luminescent material, preparation method, and application thereof
  • Anti-fake rare earth luminescent material, preparation method, and application thereof
  • Anti-fake rare earth luminescent material, preparation method, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Tb 0.5 Gd 0.5 (CPBOH)(H 2 O) 2 CPB

[0032] The preparation method of this rare earth luminescent material is as follows:

[0033] In water or alcohol solvent, carboxylic acid phenylboronic acid sodium salt (0.500g, 2.66mmol) and terbium chloride (0.250g, 0.67mmol), gadolinium chloride (0.249g, 0.67mmol) at room temperature in a molar ratio of 2:1 Mix at room temperature, continue to stir and react at room temperature for 0.5 to 12 hours, then filter to collect the solid product; dry at room temperature or under vacuum; obtain 0.351 g of pure product as white solid powder, with a yield of 97%.

[0034] Theoretical element content (%) Tb 0.5 Gd 0.5 C 14 B 2 o 11 h 17 : C, 31.08; H, 3.17; O, 32.53; Measured element content (%): C, 31.07; H, 3.18; O, 32.52. The above analysis results show that the obtained product is the expected product.

[0035] Through the method in Example 1, a series of rare earth luminescent materials can be synthesized, and th...

Embodiment 2

[0036] Example 2: Tb 0.5 Eu 0.5 (CPBOH)(H 2 O) 2 CPB

[0037] In aqueous solution, carboxylic acid phenylboronic acid sodium salt (0.500g, 2.66mmol) was mixed with terbium chloride (0.250g, 0.67mmol), europium chloride (0.245g, 0.67mmol) at room temperature in a molar ratio of 2:1, After continuing to stir and react at room temperature for 0.5-12 hours, the solid product was collected by filtration; dried at room temperature or under vacuum; 0.349 g of pure product was obtained as a white solid powder, with a yield of 98%.

[0038] Theoretical element content (%) Tb 0.5 Eu 0.5 C 14 B 2 o 11 h 17: C, 31.23; H, 3.18; O, 32.69; Measured element content (%): C, 31.24; H, 3.17; O, 32.67. The above analysis results show that the obtained product is the expected product.

[0039] In addition, this example also synthesized a series of luminescent materials containing Tb and Eu two rare earth metal elements in different proportions, and carried out XRD tests one by one. For ...

Embodiment 3

[0044] Example 3: Eu 0.5 Gd 0.5 (CPBOH)(H 2 O) 2 CPB

[0045] In aqueous solution, carboxylic acid phenylboronic acid sodium salt (0.500g, 2.66mmol) was mixed with europium chloride (0.245g, 0.67mmol), gadolinium chloride (0.249g, 0.67mmol) at room temperature in a molar ratio of 2:1, After continuing to stir and react at room temperature for 0.5-12 hours, the solid product was collected by filtration; dried at room temperature or under vacuum; 0.353 g of pure product was obtained as a white solid powder, with a yield of 98%.

[0046] Theoretical element content (%) Tb 0.5 Eu 0.5 C 14 B 2 o 11 h 17 : C, 31.28; H, 3.19; O, 32.74; Measured element content (%): C, 31.29; H, 3.18; O, 32.76. The above analysis results show that the obtained product is the expected product.

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Abstract

The invention discloses a rare earth luminescent material for anti-counterfeiting, its preparation method and application. The rare earth luminescent material belongs to a coordination compound, and its general chemical formula is: LnxLn'1‑x(CPBOH)CPB or LnxLn'1‑x(CPBOH)(H2O)2CPB, wherein the central atoms are Ln and Ln', and the central atom All belong to rare earth elements, 0

Description

technical field [0001] The invention relates to a rare earth luminescent material for anti-counterfeiting and its preparation method and application, belonging to the field of rare earth luminescent materials. Background technique [0002] Counterfeit goods seriously affect the healthy development of the market economy, resulting in a large number of economic losses. The luxury goods industry and the cosmetics industry have always suffered from counterfeit products, and now counterfeit products have affected various industries, such as: automobile manufacturing, pharmaceutical industry and food industry, and these counterfeit products will cause safety and public health problems. Therefore, many industries are looking for effective anti-counterfeiting ways to identify the products or product packaging they put on the market. Because thermoplastic polymers are the building blocks of many products, it is especially urgent and important to find anti-counterfeiting materials an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06B42D25/36
CPCC07F5/003B42D25/36C09K11/06C09K2211/182
Inventor 范骁姚丹丹李海普杨兆光
Owner CENT SOUTH UNIV
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