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Multicolor fluorescence material based on rare-earth metal organic frame, preparation method of multicolor fluorescence material and application of anti-counterfeiting ink

A technology of organic frameworks and rare earth metals, applied in luminescent materials, 3/13 group organic compounds without C-metal bonds, applications, etc., can solve the problems of single luminous light color and weak concealment, and achieve high luminous brightness, Good anti-counterfeiting effect and simple synthesis conditions

Active Publication Date: 2019-01-18
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, it is urgent to develop the application of multi-color fluorescent materials based on rare earth metal organic frameworks in anti-counterfeiting inks, in order to solve the shortcomings of weak concealment and single light color in existing chemical fluorescent anti-counterfeiting materials, and provide a synthesis process Anti-counterfeiting ink with simple, strong luminous brightness and adjustable light color

Method used

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  • Multicolor fluorescence material based on rare-earth metal organic frame, preparation method of multicolor fluorescence material and application of anti-counterfeiting ink
  • Multicolor fluorescence material based on rare-earth metal organic frame, preparation method of multicolor fluorescence material and application of anti-counterfeiting ink
  • Multicolor fluorescence material based on rare-earth metal organic frame, preparation method of multicolor fluorescence material and application of anti-counterfeiting ink

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: the preparation of rare earth nitrate solution:

[0035] Weigh 1.9150 g of yttrium nitrate hexahydrate, add deionized water, stir to dissolve and set the volume to 50 mL; weigh 1.8692 g of terbium oxide powder with a purity of 99.99%, add an appropriate amount of concentrated nitric acid and stir until completely dissolved, then add deionized water Dilute to 50 mL; weigh 1.7596 g of europium oxide powder with a purity of 99.99%, add an appropriate amount of concentrated nitric acid and stir until completely dissolved, then add deionized water to dilute to 50 mL; weigh 0.0150 g of sodium lauryl sulfate powder , add deionized water to dissolve to 50mL.

Embodiment 2

[0036] Example 2: Synthesis of rare earth metal organic framework multicolor fluorescent materials:

[0037]The 0.1 mol / L rare earth nitrate was prepared according to the 3:7:0; 5:14:1; 2:7:1; 3:14:3; 1:7:2; 1:14:5; 0:7:3; 7:0:3 volume ratio feeding, the total volume of rare earth nitrate is 2.8mL, and 0.08 g of 1,3,5-benzenetricarboxylic acid, 0.025 g of Sodium acetate in water, 8 mL of absolute ethanol, 8 mL of N, N-dimethylformamide, and 3.6 mL of deionized water were mixed evenly, placed in an oven at 75°C for 48 h, and then taken out and centrifuged at 4000 rpm 5min, washed and centrifuged with deionized water and absolute ethanol several times, dried, and ground in an agate mortar to obtain a rare earth metal organic framework powder sample.

Embodiment 3

[0038] Example 3: Preparation of multicolor fluorescent anti-counterfeiting ink based on rare earth metal organic framework

[0039] Rare earth metal organic framework powder 0.1 g

[0040] Absolute ethanol 22.5mL

[0041] Ethylene glycol 22.5mL

[0042] Glycerol 2.5 mL

[0043] Diethylene glycol 2.5 mL

[0044] Sodium lauryl sulfate solution 2 mL

[0045] After mixing the raw materials evenly, ultrasonically disperse for 30 min, centrifuge at 1000 rpm for 5 min in a centrifuge, and take the supernatant to obtain a multi-color fluorescent anti-counterfeiting ink based on rare earth metal organic frameworks.

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PUM

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Abstract

The invention discloses a multicolor fluorescence material based on a rare-earth metal organic frame, a preparation method of the multicolor fluorescence material and application of anti-counterfeiting ink. The multicolor fluorescence material is prepared by uniformly mixing rare earth, a nitrate solution, 1,3,5-benzene tricarbonic acid, anhydrous sodium acetate, absolute ethyl alcohol, N,N-dimethylformamide and deionized water to obtain a mixture, placing the mixture in an oven to react at the temperature of 75 DEG C to obtain a reaction product, taking out the reaction product and centrifuging, washing with deionized water and absolute ethyl alcohol, drying, and grinding, wherein the rate earth is yttrium, terbium and europium. The material is synthesized by simple conditions, is high inillumination brightness, and can realize light color adjustment from green to red, a preset anti-counterfeiting pattern with a specific color or mixed color is printed by an ink-jet printer, the printed pattern is hidden in the sun, and the problem that the hiding performance is low in anti-counterfeiting printing is solved. In the anti-counterfeiting verification, the pattern is stimulated by a254 nm ultraviolet lamp, the preset specific color or the mixed color is displayed, and a better anti-counterfeiting effect is achieved.

Description

technical field [0001] The invention belongs to the field of anti-counterfeiting inks, and in particular relates to a multicolor fluorescent material based on a rare earth metal organic framework, a preparation method thereof and an application of anti-counterfeiting inks. Background technique [0002] With the rapid development of the economy and society, the circulation of social wealth has accelerated, and the counterfeiting and counterfeiting crimes of commodity currency and medicines have become increasingly rampant, causing great property losses to the general public. On May 25-26, 2004, the "First Global Anti-Counterfeiting Conference" was held at the headquarters of the World Customs Organization in Brussels. According to the meeting materials, the global value of counterfeit and infringing goods exceeds 600 billion US dollars, equivalent to 7% of the total world trade, and has become the third largest public hazard in the world after terrorist activities and drug tr...

Claims

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Application Information

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IPC IPC(8): C07F5/00C09K11/06C07C63/307C09D11/50
CPCC07C63/307C07F5/003C09D11/50C09K11/06C09K2211/182
Inventor 梁宏斌欧奕意周炜杰周容富
Owner SUN YAT SEN UNIV
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