MOG fluorescent ink as well as preparation method and information encryption and anti-counterfeiting application thereof

A technology of fluorescent inks and ligands, applied in inks, applications, household appliances, etc., can solve the problems of low absorption rate of lanthanide ions, and achieve the effects of short reaction time, simple operation, and cost saving

Pending Publication Date: 2022-07-15
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the absorption of lanthanide ions is relatively low because their 4f electrons are absorbed by the 5s 2 and 5p 6 electronic shielding

Method used

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  • MOG fluorescent ink as well as preparation method and information encryption and anti-counterfeiting application thereof
  • MOG fluorescent ink as well as preparation method and information encryption and anti-counterfeiting application thereof
  • MOG fluorescent ink as well as preparation method and information encryption and anti-counterfeiting application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Prepare the fluorescent ink of MOG1:

[0030] Step (1-1): take 0.8mmol 2,6-pyridinedicarboxylic acid and 0.2mmol 5-aminoisophthalic acid (mol ratio is 4:1), measure 2mL ethanol and add it to a clean small glass bottle together, Sonicate for one minute, then add 280 μL of triethylamine reagent with a pipette, and continue to sonicate until it is completely dissolved into a clear and transparent solution.

[0031] Step (1-2): 1 mmol Eu (NO 3 ).6H 2 Add O into 2 mL of ethanol and sonicate until it is completely dissolved, then transfer the mixed solution to the above-mentioned small glass bottle at one time, and quickly stir with a small glass rod to form a gel. After standing for a period of time, turn the small glass bottle upside down, the formed gel does not fall off, and MOG1 is successfully prepared, such as figure 1 shown. The MOG1 prepared above was washed three times with deionized water and ethanol, dehydrated and dried for 12 hours, and then taken out to...

Embodiment 2

[0042] (1) Prepare the fluorescent ink of MOG1:

[0043] Step (1-1): take 0.8mmol of 2,6-pyridinedicarboxylic acid and 0.2mmol of 2-aminoterephthalic acid (mol ratio is 4:1), measure 2mL of ethanol and add it into a clean small glass bottle together, Sonicate for one minute, then add 280 μL of triethylamine reagent with a pipette, and continue to sonicate until it is completely dissolved into a clear and transparent solution.

[0044] Step (1-2): 1 mmol EuCl 3 .6H 2 Add O into 2 mL of ethanol and sonicate until completely dissolved, then transfer the mixed solution to the above-mentioned small glass bottle at one time, and quickly stir with a small glass rod to form a gel. After standing for a period of time, the small glass bottle was inverted, the formed gel did not fall off, and MOG1 was successfully prepared. The MOG1 prepared above was washed three times with deionized water and ethanol each, dehydrated and dried for 12 hours, and then taken out to obtain a dry gel. W...

Embodiment 3

[0054] (1) Prepare the fluorescent ink of MOG1:

[0055] Step (1-1): take 0.8mmol 2,5-pyridinedicarboxylic acid and 0.2mmol 2-aminophthalic acid (molar ratio is 4:1), measure 2mL ethanol and add it to a clean small glass bottle together, Sonicate for one minute, then add 280 μL of triethylamine reagent with a pipette, and continue to sonicate until it is completely dissolved into a clear and transparent solution.

[0056] Step (1-2): 1 mmol Eu (NO 3 ).6H 2 Add O into 2 mL of ethanol and sonicate until completely dissolved, then transfer the mixed solution to the above-mentioned small glass bottle at one time, and quickly stir with a small glass rod to form a gel. After standing for a period of time, the small glass bottle was inverted, the formed gel did not fall off, and MOG1 was successfully prepared. The MOG1 prepared above was washed three times with deionized water and ethanol each, dehydrated and dried for 12 hours, and then taken out to obtain a dry gel. Weigh 10 mg...

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Abstract

The invention discloses MOG fluorescent ink and a preparation method and information encryption and anti-counterfeiting application thereof.The preparation method comprises the steps that metal organic gel and metal organic xerogel are prepared, the metal organic xerogel is taken and added into deionized water, ultrasonic dispersion is conducted to be uniform, then a proper amount of powder is added into the mixture, ultrasonic stirring continues to be conducted till the mixture is in a uniform colloidal state, and the fluorescent ink can be obtained. The ink provided by the invention can be smeared on paper by utilizing a simple spin-coating method, can also be used for directly and smoothly writing, and can be applied to an ink-jet printing technology. After the ink is dried, the ink is invisible under a fluorescent lamp, and different bright colors can be displayed only under an ultraviolet lamp, so that important information can be well hidden. And after a proper amount of water mist is sprayed, the double-encryption fluorescent anti-counterfeiting film can immediately present a color different from the previous color under an ultraviolet lamp, so that quick-response double-encryption fluorescent anti-counterfeiting is realized. After the printing ink is dried, the previous color can be recovered, and the fluorescent printing ink can be repeatedly used, so that the cost is saved, and the use value of the fluorescent printing ink is maximized.

Description

technical field [0001] The invention relates to the technical field of fluorescent inks, in particular to a metal organic gel MOG fluorescent ink, a preparation method thereof, and information encryption and anti-counterfeiting applications. Background technique [0002] The main component of fluorescent inks is fluorescent dyes, which are functional luminescent pigments. The difference from ordinary pigments is that when irradiated by external light (ultraviolet light, etc.), they can absorb a certain form of energy to excite photons, and absorb them in the form of low visible light. The energy of the pigment is released, resulting in the phenomenon of fluorescence of different hues. The combination of different colors of light forms an unusually bright color, and when the light stops irradiating, the luminescence phenomenon disappears, so it is called a fluorescent pigment. [0003] Currently, reports of counterfeiting and duplication of security documents such as currency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50
CPCC09D11/50
Inventor 牛和林黄港廉笑
Owner ANHUI UNIVERSITY
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