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Multi-mode excited single-red-light nano fluorescent material and preparation method thereof

A nano-fluorescence and red light technology, applied in the field of nano-fluorescent materials, can solve the problems of single detection light source, cumbersome preparation steps, simple fluorescence anti-counterfeiting mode, etc., and achieve the effect of wide application prospects, simple preparation method and stable sample performance

Active Publication Date: 2020-07-17
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of single detection light source, cumbersome preparation steps and simple fluorescent anti-counterfeiting mode in current fluorescent anti-counterfeiting materials, the present invention provides a multi-mode excitation single red light nano-fluorescent material and a preparation method thereof, realizing the multi-mode excitation mode of the material , the preparation process is simple, the repeatability is good, the cost is low, and it has a wide application prospect

Method used

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  • Multi-mode excited single-red-light nano fluorescent material and preparation method thereof
  • Multi-mode excited single-red-light nano fluorescent material and preparation method thereof
  • Multi-mode excited single-red-light nano fluorescent material and preparation method thereof

Examples

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Embodiment 1

[0039] A method for preparing a heavily doped multimode excitation single red light nano-fluorescent material with a core-shell structure, the steps are as follows:

[0040] (1) Prepare YbCl with a concentration of 1mmol / ml 3 , ErCl 3 , MnCl 2 and NaF aqueous solution;

[0041] (2) Dissolve 0.3g NaOH in 5ml deionized water, add 10ml ethanol, 10ml oleic acid, and stir for 10 minutes;

[0042](3) Separately add 0.2ml YbCl 3 , 0.1ml ErCl 3 and 0.2ml MnCl 2 Add the solution to step (2), and continue to stir for 10 minutes;

[0043] (4) Add 3mL NaF solution to the solution in step (3), and stir for 30 minutes;

[0044] (5) Transfer the solution in step (4) to an autoclave and react at 190°C for 160 minutes to obtain fluorescent products that can be excited by wavelengths of 379nm, 486nm, 522nm, 808nm and 980nm. The specific results are as follows Figure 4 shown;

[0045] (6) After the product in step (5) is cooled to room temperature, after repeated centrifugal washing wi...

Embodiment 2

[0056] A method for preparing a heavily doped multimode excitation single red light nano-fluorescent material with a core-shell structure, the steps are as follows:

[0057] (1) Prepare YbCl with a concentration of 1mmol / ml 3 , ErCl 3 , MnCl 2 and NaF aqueous solution;

[0058] (2) Dissolve 0.3g NaOH in 3ml deionized water, add 15ml ethanol, 10ml oleic acid, and stir for 10 minutes;

[0059] (3) Separately add 0.1ml YbCl 3 , 0.2ml ErCl 3 and 0.2ml MnCl 2 Add the solution to step (2), and continue to stir for 10 minutes;

[0060] (4) Add 3 mL of NaF solution to the solution in step (3), and stir for 30 minutes;

[0061] (5) Transfer the solution in step (4) to an autoclave, and react at 200°C for 100 minutes to obtain fluorescent products that can be excited by wavelengths of 379nm, 486nm, 522nm, 808nm and 980nm;

[0062] (6) After the product in step (5) has cooled down to room temperature, it is repeatedly centrifuged and washed with cyclohexane and absolute ethanol f...

Embodiment 3

[0070] A method for preparing a heavily doped multimode excitation single red light nano-fluorescent material with a core-shell structure, the steps are as follows:

[0071] (1) Prepare YbCl with a concentration of 1mmol / ml 3 , ErCl 3 , MnCl 2 and NaF aqueous solution;

[0072] (2) Dissolve 0.3g NaOH in 4ml deionized water, add 12ml ethanol, 12ml oleic acid, and stir for 10 minutes;

[0073] (3) Add 0.1ml YbCl 3 , 0.2ml ErCl 3 and 0.2ml MnCl 2 Add the solution to step (2), and continue to stir for 10 minutes;

[0074] (4) Add 2mL of NaF solution to the solution in step (3), and stir for 30 minutes;

[0075] (5) Transfer the solution in step (4) to an autoclave, and react at 220°C for 100 minutes to obtain fluorescent products that can be excited by wavelengths of 379nm, 486nm, 522nm, 808nm and 980nm;

[0076] (6) After the product in step (5) is cooled to room temperature, after repeated centrifugal washing with cyclohexane and absolute ethanol for 3-6 times, disperse ...

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Abstract

The invention discloses a multimode excited single-red-light nano fluorescent material and a preparation method thereof. The preparation method comprises the following steps: (1) respectively preparing aqueous solutions of YbCl3, ErCl3, MnCl2 and NaF with the concentration of 0.5-2.5 mmol / ml; (2) dissolving 0.3 g of NaOH in 2-6 ml of deionized water, adding 5-15 ml of ethanol and 5-15 ml of oleicacid, and stirring; (3) respectively adding the YbCl3 solution, the ErCl3 solution and the MnCl2 solution into the solution obtained in the step (2), and stirring; (4) adding 1-3 mmol of NaF into thesolution obtained in the step (3), and stirring; (5) transferring the solution in the step (4) into a high-pressure kettle, and carrying out a reaction for 100-400 minutes at the temperature of 140-240 DEG C to obtain a fluorescent product; and (6) after the fluorescence product in the step (5) is cooled to room temperature, centrifuging and washing to obtain the product.

Description

technical field [0001] The invention belongs to the field of nano fluorescent materials, and in particular relates to a multi-mode excited single red light nano fluorescent material and a preparation method thereof. Background technique [0002] Rare earth-doped fluorescent nanomaterials have the advantages of narrow emission spectrum, high color purity, bright colors, stable physical and chemical properties, high temperature resistance, and radiation resistance, so they have been widely used. Increasing the concentration of dopants in fluorescent nanomaterials is an effective way to increase their luminous intensity. The construction of ingenious nanomaterial microstructures and suitable dopant pair ions can greatly reduce concentration quenching and achieve heavy doping of sensitizers and activators. At the same time, because the energy levels of rare earth ions are very rich, the high doping concentration increases the absorption of excitation light energy, so the down-c...

Claims

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Application Information

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IPC IPC(8): C09K11/61B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/7773
Inventor 毛艳丽刘越峰潘根才张华芳高惠平
Owner HENAN UNIVERSITY
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