High-color-purity red light up-conversion nanoparticle material and preparation method thereof

A nanoparticle and color purity technology, applied in the field of high color purity red light up-conversion nanoparticle materials and their preparation, can solve problems such as inability to suppress luminescence quenching, and achieve the effects of reducing surface defects, luminescence enhancement, and uniform particle size

Pending Publication Date: 2020-11-17
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method cannot suppress the luminescence quenching caused by the energy transfer from the activator to the internal lattice quenching point.

Method used

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  • High-color-purity red light up-conversion nanoparticle material and preparation method thereof
  • High-color-purity red light up-conversion nanoparticle material and preparation method thereof
  • High-color-purity red light up-conversion nanoparticle material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: This example is converted from nanoparticle materials on high-color purity red light, and chemical formula is LIERF. 4 : TM 3+ Tm 3+ Doped mole is in turn. 3+ TM 3+ The total molar amount of 0.5%, 1.0%, 5.0%, 10%, 20%;

[0035] TM 3+ The doping concentration is 0.5%, 1.0%, 5.0%, 10%, 20% of Lierf in turn. 4 The preparation method of the nanoparticles are up-converted, and the specific steps are as follows:

[0036] (1) Put ERCL 3 The solution was added to an organic solvent, and the temperature increasing segment was carried out under stirring conditions to obtain a mixed liquid A; wherein the organic solvent is a mixed solvent of oleic acid and octadene; wherein the volume ratio of oleic acid and octadene in the organic solvent is 2: 3, ERCL 3 The volume ratio of the solution to the organic solvent is 1: 10, ERCL 3 The solution concentration is 0.5mol / L; ERCL 3 Solution and TMCL 3 The volume ratio of the solution was 1.99: 0.01, 1.98: 0.02, 1.9: 0.1, 1.8: 0.2 ...

Embodiment 2

[0041] Example 2: This example high-colored purity red light conversion nanoparticle material, chemical formula is LIERF 4 : TM 3+ @Liyf 4 LIERF 4 : TM 3+ @Liyf 4 LIERF 4 : TM 3+ Like core, LiYf 4 For the shell of the shell structure, Lierf 4 : TM 3+ TM in nanoparticles 3+ Doped mole is ER and TM in turn 3+ The total molar amount of 0.5%, 1.0%, 5.0%, 10.0%, 20.0%;

[0042] TM 3+ The doping concentration is 0.5%, 1.0%, 5.0%, 10.0%, 20.0% of Lierf. 4 : TM 3+ @Liyf 4 The preparation method, the specific steps are as follows:

[0043] (1) Put ERCL 3 The solution was added to an organic solvent, and the temperature increasing segment was carried out under stirring conditions to obtain a mixed liquid A; wherein the organic solvent is a mixed solvent of oleic acid and octadene; wherein the volume ratio of oleic acid and octadene in the organic solvent is 2: 3.2, ERCL 3 The volume ratio of the solution to the organic solvent is 1: 11, ERCL 3 The solution concentration is 0.5mol / L; ERCL ...

Embodiment 3

[0052] Example 3: This example high-colored purity red light conversion nanoparticle material, chemical formula is LIERF 4 : TM 3+ @Liyf 4 LIERF 4 : TM 3+ @Liyf 4 LIERF 4 : TM 3+ Like core, LiYf 4 For the shell of the shell structure, Lierf 4 : TM 3+ TM in nanoparticles 3+ Doped molar amount for ER 3+ TM 3+ 1.0% of the total mole;

[0053] TM 3+ Lierf in doped concentration is 1.0% 4 Upload nanoparticles and lierf 4 : TM 3+ @Liyf 4 The preparation method, the specific steps are as follows:

[0054] (1) Put ERCL 3 Solution and TMCL 3 The solution was added to an organic solvent, and the temperature increasing segment was carried out under stirring conditions to obtain a mixed liquid A; wherein the organic solvent is a mixed solvent of oleic acid and octadene; wherein the volume ratio of oleic acid and octadene in the organic solvent is 2: 3.2, ERCL 3 Solution and TMCL 3 The total volume ratio of the solution and the volume ratio of the organic solvent is 1: 10, ERCL 3 The concentra...

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Abstract

The invention discloses a high-color-purity red light up-conversion nanoparticle material and a preparation method thereof, and belongs to the technical field of luminescent materials. The high-color-purity red light up-conversion nanoparticle material has a chemical formula of LiErF4:Tm<3+>-coated LiYF4, LiErF4:Tm<3+>-coated LiYF4 is of a core-shell structure taking LiErF4:Tm<3+> as a core and LiYF4 as a shell, and the doping molar weight of Tm<3+> in LiErF4: Tm<3+> nanoparticles is 0.5-20%. According to the invention, Tm<3+> is doped in the red light up-conversion nanoparticles to reduce theloss of internal energy migration of the nanoparticles, the doping content of Tm<3+> is adjusted to adjust the red light up-conversion intensity, and an inert shell layer LiYF4 is synthesized on thesurfaces of the LiErF4:Tm<3+> nanoparticles to form a core-shell structure to reduce surface defects. And the purpose of high-color-purity red light emission of the up-conversion nanoparticles is achieved.

Description

Technical field [0001] The present invention relates to a high-colored purity red light conversion nanoparticle material and a preparation method thereof, belonging to the technical field of luminescent materials. Background technique [0002] Up-conversion nanomaterials are materials that can convert invisible near-infrared light into visible light, which illuminates the profile sharp, anti-light bleaching, multi-color adjustable adjustment, in full color display, biomarker, advanced security Technology and the area of ​​application have extensive application prospects. Especially nanomaterials with red or near infrared glowing, more attention from scientific research workers. The red fluorescent material has an anti-biological background fluorescence interference, and has the advantages of small cell damage, strong penetration ability, and has great application requirements in biofluorescence imaging. However, the presence of cross relaxation and energy migration reduces the fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/85B82Y20/00B82Y30/00B82Y40/00
CPCC09K11/02C09K11/7773B82Y20/00B82Y30/00B82Y40/00
Inventor 徐旭辉乔玉芳余雪邱建备杨玺
Owner KUNMING UNIV OF SCI & TECH
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