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Inorganic hybrid probe as well as preparation method and application thereof

A technology of hybridization and probe, which is applied in the field of inorganic hybrid probe and its preparation, can solve the problems of insufficient thermal stability of rare earth organic complexes, achieve insufficient thermal stability, reduce detection limit, and improve thermal stability Effect

Active Publication Date: 2021-12-31
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the first aspect of the present invention proposes an inorganic hybrid probe, which not only solves the problem of insufficient thermal stability of rare earth organic complexes, but also provides a convenient and feasible method for detecting copper ions and dichromate ions

Method used

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  • Inorganic hybrid probe as well as preparation method and application thereof
  • Inorganic hybrid probe as well as preparation method and application thereof
  • Inorganic hybrid probe as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] figure 1 It is the synthetic route diagram of montmorillonite-europium (III) organic complex in the present invention, such as figure 1 As shown, a kind of inorganic hybrid probe is prepared in this embodiment, and the specific process is as follows:

[0052] S1: Amination reaction of montmorillonite: Weigh montmorillonite (MMT) and 3-aminopropyltriethoxysilane in a 100mL round-bottomed flask with the ratio of substance amount 1: (1~2), and Add 30mL of absolute ethanol, ultrasonic 3min to fully disperse the montmorillonite in absolute ethanol. The suspension of montmorillonite was moved to a sand bath at 50° C., and magnetically stirred at 600 rpm for 24 h. After the reaction, the mixture was centrifuged at 6000rpm for 5min, washed with absolute ethanol and deionized water three times, and dried in a vacuum oven at 70°C for 10 hours. The obtained white powder was designated as MMT-NH 2 ;

[0053] S2: Carboxylation reaction: MMT-NH obtained by weighing diethyltriamin...

Embodiment 2

[0078] This embodiment tests the fluorescence response behavior of the montmorillonite-europium (III) organic complex prepared in Example 1 to different metal salts, and the specific process is as follows:

[0079] (1) Blank group: disperse the montmorillonite-europium (III) organic complex in deionized water and its concentration is 1mg / mL, take 2mL in a test tube, irradiate the suspension with 395nm wavelength light, and observe its luminescence .

[0080] (2) Experimental group 1: Disperse the montmorillonite-europium (III) organic complex in deionized water and its concentration is 1mg / mL, take 2mL in a test tube, and add 2μl concentration into the test tube with a pipette gun 0.001mol / mL NaCl solution, irradiate the suspension with light with a wavelength of 395nm, and observe its luminescence.

[0081] (3) Experimental groups 2 to 20: The difference from experimental group 1 is that the 0.001mol / mL NaCl solution was replaced by CuCl 2 , FeCl 3 , AgNO 3 、NiCl 2 , Co(...

Embodiment 3

[0084] This embodiment has tested the montmorillonite-europium (III) organic complex that embodiment 1 makes to different concentrations of CuCl 2 and K 2 Cr 2 o 7 The fluorescence intensity of the solution changes, and the specific process is as follows:

[0085] Disperse the montmorillonite-europium (III) organic complex in deionized water at a concentration of 1mg / mL, take 2mL of the dispersion in a quartz cuvette with four links, and prepare CuCl with a concentration of 1-20μM 2 and K 2 Cr 2 o 7 solution, use a pipette gun to take 10 μl and add it dropwise to the aqueous suspension of the montmorillonite-europium (III) complex, and use a fluorescence spectrometer to observe that the montmorillonite-europium (III) organic complex The fluorescence intensity increases with the CuCl in aqueous solution 2 or K 2 Cr 2 o 7 As the concentration increases, the change trend of its fluorescence intensity.

[0086] The test results of the fluorescence spectrometer are as fo...

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Abstract

The invention provides an inorganic hybrid probe as well as a preparation method and application thereof, the inorganic hybrid probe comprises a rare earth organic complex, and the rare earth organic complex is covalently bound with a silanized layered mineral. By means of the method, the problem of insufficient thermal stability of the rare earth organic complex is solved, a convenient and feasible method is provided for detecting copper ions and dichromate ions, and the corresponding fluorescence spectrum detection limits are 13nM and 38nM respectively.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to an inorganic hybrid probe and its preparation method and application. Background technique [0002] As one of the essential trace elements for the human body, copper ions play an important role in the metabolism of the human body, such as Cu 2+ It is involved in the process of enzymatic catalysis, and it is also a component of copper proteins such as human blood, liver and brain tissue. Cu in the human body 2+ Too little can lead to diseases like osteoporosis and anemia, while too much can lead to elevated blood pressure, Alzheimer's disease, and Wilson's disease. But at the same time Cu 2+ It is also a common environmental pollution transition metal ion. Excessive copper ions in the soil will not be conducive to the growth of crops, and will greatly damage the liver and kidney of the organism through the accumulation of contaminated food and drinking ...

Claims

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Application Information

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IPC IPC(8): C09K11/06G01N21/64
CPCC09K11/06G01N21/643C09K2211/182C09K2211/1037
Inventor 王前明郭志成郑玉惠
Owner SOUTH CHINA NORMAL UNIVERSITY
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