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Eu-complex fluorescent probe and its preparation method and application

A technology of fluorescent probes and complexes, applied in the field of Eu-complex fluorescent probes and their preparation, can solve the problems of complex sample pretreatment, expensive and time-consuming, etc., and achieves wide potential application value, high sensitivity and strong selectivity Effect

Inactive Publication Date: 2021-12-31
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these traditional detection techniques are limited by complex sample pretreatment, expensive instruments, and long time consumption.

Method used

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  • Eu-complex fluorescent probe and its preparation method and application
  • Eu-complex fluorescent probe and its preparation method and application
  • Eu-complex fluorescent probe and its preparation method and application

Examples

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Embodiment 1

[0035] A kind of Eu-complex fluorescent probe and its preparation method and application, comprising the following steps:

[0036]Synthesis of Eu-complex fluorescent probes:

[0037] Example 1 of the present invention was prepared by a solvothermal method. At the same time, 30 copies of the following system were configured: 8.06mg of 2,6-bis-(5-pyridin-4-yl-1H-[1,2,4]triazol-3-yl)-pyridine and 21.75mg of Eu(NO 3 ) 3 ·6H 2 O was dissolved in a mixed solution of 5mL ethanol and 5mL acetonitrile, stirred for 0.5h and then transferred to a 20mL autoclave. Heat 30 parts of the reaction kettle in an oven at 100°C for 72h, and then cool it to room temperature at a rate of 5°C / h to precipitate pale yellow blocky crystals, filter under reduced pressure, and wash the filter residue with a mixed solution of acetonitrile and ethanol to obtain light yellow Blocky crystals are the target product, and the yield of the target product is 58%.

[0038] A single crystal X-ray diffraction an...

Embodiment 2

[0051] The optical properties of the Eu-complex fluorescent probes to zinc ions, cadmium ions and terbium ions were measured using the Eu-complexes prepared in Example 1 above as fluorescent probes in DMF / H 2 In O(9 / 1,v / v) medium, the molar concentration is 1×10 -5 mol / L solution, respectively, at a molar concentration of 1×10 -5 mol / L Ag + ,Al 3+ , Ba 2+ ,Cd 2+ ,Co 2+ ,Cr 3+ , Cu 2+ , Eu 3+ ,Fe 3 + ,Hg 2+ , K + ,Mg 2+ ,Mn 2+ , Ni 2+ ,Pb 2+ ,Zn 2+ Add an equal amount of the above-mentioned fluorescent probe solution in the solution of metal ions, and adopt a fluorescence spectrometer to carry out fluorescence spectrum analysis (excitation wavelength is 350nm) to it respectively, and the fluorescence spectrum diagram of gained is shown in Figure 5 . pass Figure 5 It can be seen that the Eu-complex prepared in Example 1 of the present invention acts as a fluorescent probe with zinc ions, cadmium ions and terbium ions, and the position and intensity of the fl...

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Abstract

The invention relates to a Eu-complex fluorescent probe and a preparation method and application thereof, belonging to the technical field of crystal material synthesis. The preparation method and application of the Eu-complex fluorescent probe include the following steps: S1: dissolving hexahydrate and europium nitrate in a mixed solvent of acetonitrile and ethanol, and then adding 2,6-di-(5-pyridine- 4-base-1H-[1,2,4]triazole-3-yl)-pyridine to obtain a mixture; S2: put the mixture obtained in S1 into a high-pressure reactor and heat it to 100 degrees for 72 hours; S3: after the reaction ends , slowly cooled to room temperature, light yellow massive crystals were precipitated, and the crystal material was collected by filtration; S4: the crystal material obtained in S3 was washed to obtain the Eu-complex probe. The Eu‑complex has high sensitivity and good selectivity when used as a fluorescent probe to detect zinc ions, cadmium ions and terbium ions.

Description

technical field [0001] The invention belongs to the technical field of crystal materials, and in particular relates to a Eu-complex fluorescent probe and a preparation method and application thereof. Background technique [0002] Zinc ions are widely distributed in the cells and body fluids of animals and plants, and play an extremely important role in important physiological processes such as human growth and development, reproductive genetics, immunity, and endocrine. Studies have shown that zinc ions are closely related to diseases such as Alzheimer's disease and epilepsy. Cadmium is also a heavy metal element that widely exists in nature. In nature, cadmium often coexists with zinc and lead, and is widely used in industrial fields such as alloy manufacturing, electroplating, battery and dye manufacturing. However, cadmium is a trace element that is highly toxic to the human body. Excessive intake of cadmium will affect the normal function of the enzyme system in the hum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00C09K11/06G01N21/64
Inventor 徐周庆李慧军张波赵晓雷闫玲玲
Owner HENAN POLYTECHNIC UNIV
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