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Up-conversion luminescent nano-material surface-modified with alkyne silver, and preparation method and application thereof

A technology of surface modification and nanomaterials, applied in the field of nanoluminescent materials, can solve the problem of inability to detect small molecules, and achieve the effect of preventing the loss of resonance energy

Active Publication Date: 2020-06-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the up-conversion luminescent nanomaterials in the prior art can only realize the imaging of rare earth luminescent materials in cells, and cannot realize the detection of small molecules in cells.

Method used

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  • Up-conversion luminescent nano-material surface-modified with alkyne silver, and preparation method and application thereof
  • Up-conversion luminescent nano-material surface-modified with alkyne silver, and preparation method and application thereof
  • Up-conversion luminescent nano-material surface-modified with alkyne silver, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 A method for preparing an upconversion luminescent nanomaterial modified by silver alkyne surface

[0028] Include the following steps:

[0029] Step 1. Preparation of nanoparticles with upconversion luminescence properties

[0030] The nanoparticle with up-conversion luminescence performance is Y 0.85 f 3 :Yb 0.1 3+ / Er 0.05 3+ / PAA (abbreviated as YYEP)

[0031] 2.125 mL Y(NO 3 ) 3 .6H 2 O, 200 μL Yb(NO 3 ) 3 .6H 2 O and 100 μL Er(NO 3 ) 3 .6H 2 O was added to a 100 ml flat-bottomed beaker, a mixed solvent of 20 ml of absolute ethanol and 10 ml of ethylene glycol was added, and the reaction was stirred by magnetic force for 30 minutes to obtain solution A.

[0032] The Y(NO 3 ) 3 .6H 2 The concentration of O is 0.4 mol / L;

[0033] The Yb(NO 3 ) 3 .6H 2 The concentration of O is 0.5 mol / L;

[0034] The Er(NO 3 ) 3 .6H 2 The concentration of O is 0.05 mol / L.

[0035] Add 3ml of sodium fluoride solution to the above solution A, stir ...

Embodiment 2

[0044] Example 2 Composition, morphology and luminescent properties of an upconversion luminescent nanomaterial modified by silver alkyne surface

[0045] Through the XRD pattern of YYEP@AgNPs ( figure 1 ), we can get that the synthesized composite material YYEP@AgNCs shows multiple diffraction peaks, which correspond to the peak intensities of 101 a.u., 020 a.u., 111 a.u., 210 a.u., 201 a.u., 131 a.u., 230 a.u., 321 a.u. Diffraction peaks and YF in the database 3 (JCPDS 74-0911) Compounds are coincident.

[0046] In addition, the 111 a.u. diffraction peak corresponding to the diffraction angle of 38° can correspond to Ag 0 Diffraction of the crystal plane (the reaction process has some silver ions reduced to elemental silver).

[0047] It can be seen that the above experiments show that the compound is composed of rare earth-doped up-conversion luminescent material and surface-modified organic silver.

[0048] The infrared spectrum analysis of YYEP@AgNPs showed that ( f...

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Abstract

The invention provides a preparation method of an up-conversion luminescent nano-material surface-modified with alkyne silver. The preparation method comprises a step of preparing nano-particles withup-conversion luminescence performance and a step of modifying the surface with an alkyne silver compound. According to the step of preparing the nanoparticles with the up-conversion luminescence property, adopted raw materials comprise Y(NO3)3*6H2O, Yb(NO3)3*6H2O, Er(NO3)3*6H2O, sodium fluoride and polyacrylic acid. The step for modifying the surface with the alkyne silver compound comprises: YYEP is dispersed in a mixed solvent of methyl alcohol and water, a silver salt is added, stirring is performed to achieve complete dissolving, an organic alkyne compound is added, a light yellow turbidliquid is formed under a dark condition, suction filtration is carried out, then washing is conducted, and drying is conducted to obtain the surface-modified up-conversion luminescent nano-material. The detection on glutathione small molecules in the cells is realized.

Description

technical field [0001] The invention relates to the field of nano-luminescent materials, in particular to an up-conversion luminescent nano-material modified by silver alkyne surface and its preparation method and application. Background technique [0002] Traditional fluorescent labeling materials include organic fluorescent dye molecules and micro-nano quantum dots mainly composed of inorganic components. Compared with traditional fluorescent labeling materials, rare earth-doped upconversion luminescent nanomaterials have the advantages of high chemical stability, long fluorescence lifetime, and low biological toxicity. Moreover, since the luminescence mode is up-conversion luminescence, and the excitation wave adopts a near-infrared light source, it has significant advantages such as a large light penetration depth, no autofluorescence of biological tissues, and almost no damage to biological tissues. Therefore, rare earth doped upconversion Luminescent nanomaterials hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/85B82Y20/00B82Y30/00B82Y40/00G01N21/64
CPCC09K11/02C09K11/7772B82Y20/00B82Y30/00B82Y40/00G01N21/6486Y02B20/00
Inventor 刘红高广刚陈玲宋朝宇麻鲁鲁谢林翰李守聪张家源
Owner UNIV OF JINAN
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