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Cantilever type marking pen based on water-soluble rare earth fluorescent nanometer material

A technology of rare earth fluorescence and nanomaterials, applied to ink pens with ink storage tubes in the pen holder, printing, writing utensils, etc., can solve the problems of large consumables and high cost, and achieve the effect of strong water solubility and strong orange fluorescence

Inactive Publication Date: 2015-08-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The superior characteristics of rare earth materials used in the field of anti-counterfeiting technology have increasingly attracted the attention of researchers. At present, rare earth compounds are mostly used in the form of inks for anti-counterfeiting invoices, securities, banknotes, etc., but these production processes require large consumables and high costs.

Method used

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  • Cantilever type marking pen based on water-soluble rare earth fluorescent nanometer material
  • Cantilever type marking pen based on water-soluble rare earth fluorescent nanometer material
  • Cantilever type marking pen based on water-soluble rare earth fluorescent nanometer material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The following examples illustrate the operation process of applying the method of the present invention to make a cantilever marking pen based on water-soluble rare earth nanomaterials and applying it to writing on paper and skin marking in conjunction with the accompanying drawings:

[0033] (1) Hydrophilic PEG-K 2 Yb 0.97 Er 0.03 f 5 Synthesis of fluorescent material: Weigh the amount of the substance as 1 mmol of rare earth nitrate Ln(NO) 3 (Yb 3+ and Er 3+ ), add 10 mL polyethylene glycol (PEG-400). 7 mmol potassium fluoride solution was added dropwise under stirring, and stirred for one hour. The mixed solution was transferred to a 50 mL polytetrafluoroethylene-lined reactor, placed in an oven (the reaction time was set to 5 h, and the temperature was set to 200 ° C), and the stainless steel reactor was naturally cooled to room temperature, and the obtained The reaction solution was centrifuged for 10 minutes, and the resulting precipitate was washed 3 times...

Embodiment 2

[0037] The following examples illustrate the operation process of applying the method of the present invention to make a cantilever marker pen based on water-soluble rare earth nanomaterials and applying it to anti-counterfeiting marks in conjunction with the accompanying drawings:

[0038] (1) Hydrophilic PEG-K 2 Yb 0.97 Er 0.03 f 5 Synthesis of fluorescent material: Weigh the amount of the substance as 1 mmol of rare earth nitrate Ln(NO) 3 (Yb 3+ and Er 3+ ), add 10 mL polyethylene glycol (PEG-400). 7 mmol potassium fluoride solution was added dropwise under stirring, and stirred for one hour. The mixed solution was transferred to a 50 mL polytetrafluoroethylene-lined reactor, placed in an oven (the reaction time was set to 5 h, and the temperature was set to 200 ° C), and the stainless steel reactor was naturally cooled to room temperature, and the obtained The reaction solution was centrifuged for 10 minutes, and the resulting precipitate was washed 3 times with abs...

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Abstract

The invention discloses a cantilever type marking pen based on a water-soluble rare earth fluorescent nanometer material, as well as a preparation method and application of the cantilever type marking pen. The water-soluble rare earth fluorescent nanometer material is PEG-K2Yb0.97Er0.03F5; the marking pen is a rare earth marking fountain pen or a rare earth marking glue pen. According to the invention, fluorescent marks generated by the cantilever type marking pen have the advantages of invisibility (the marks are not displayed without laser radiation, form diversity (figures, letters and the like), high safety (rare earth materials have the characteristic of low toxicity), and the like, and the cantilever type marking pen can be applied to the fields of skin marking, cultural education, criminal investigation marking, merchandise anti-counterfeiting marking and the like.

Description

technical field [0001] The invention belongs to the field of biological fluorescence imaging, and in particular relates to a cantilever marker pen based on water-soluble rare earth fluorescent nanomaterials, a preparation method and application thereof. Background technique [0002] Rare-earth up-conversion nano-luminescent materials have a unique 4f electron layer structure. Compared with traditional fluorescent materials such as quantum dots and organic dye molecules, this structure makes them have special luminescent properties of up-conversion. The advantages of their materials are narrow emission bands, chemical High stability, high light intensity and good stability, low toxicity, etc. [0003] "Invisible ink" has always been an important writing tool for confidential files. It has the characteristics of not being recognized by the naked eye under normal conditions, but visible after certain processing. According to relevant literature reports in recent years, the CIA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43K5/00
CPCB43K5/00
Inventor 邱彬吴军林振宇郭隆华陈国南
Owner FUZHOU UNIV
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