Two-dimensional Cu-MOF fluorescent probe material as well as preparation method and application thereof

A fluorescent probe and reaction technology, applied in the field of fluorescent sensors, can solve the problems of inability to carry out large-scale popularization and detection, and achieve the effects of easy operation and implementation, strong sensitivity and low cost

Active Publication Date: 2021-11-30
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the detection of metal ions, especially the detection of iron ions, is of great significance. However, up to now, the detection of metal ions generally uses atomic absorption spectroscopy and ultraviolet-visible spectrophotometry. Although it has the advantages of high sensitivity and fast time, it needs the help of Large-scale instruments are unable to carry out large-scale popularization and testing

Method used

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  • Two-dimensional Cu-MOF fluorescent probe material as well as preparation method and application thereof
  • Two-dimensional Cu-MOF fluorescent probe material as well as preparation method and application thereof
  • Two-dimensional Cu-MOF fluorescent probe material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A preparation method of a two-dimensional Cu-MOF fluorescent probe material, comprising the following steps:

[0047] Step 1: Prepare 3mL of H 2 O and 2mL DMF mixed solution.

[0048] Step 2, at room temperature, weigh L (0.0316g, 0.1mmol) and Cu (NO 3 ) 2 ·3H 2 Add O (0.0242 g, 0.1 mmol) into the above solution and ultrasonically dissolve it for 10-20 min, then add auxiliary ligand 1,3,5-BTC (0.0105 g, 0.05 mmol) and stir for 20-30 min to obtain a suspension.

[0049] Step 3, the suspension was transferred to a 23mL heat-resistant glass kettle with a polytetrafluoroethylene cover, heated to 90°C and kept at a constant temperature for 48h, and the temperature was programmed to cool down (5°C / h) to room temperature to obtain blue blocky crystals.

[0050] Step 4, the above-mentioned gained crystals are filtered through a filter membrane with a pore size of 22 μm, and then 3 mL (V H2O :V DMF =1:1) Washed twice with deionized water and DMF, dried at 90°C for 6 hours,...

Embodiment 2

[0052] A preparation method of a two-dimensional Cu-MOF fluorescent probe material, comprising the following steps:

[0053] Step 1: Prepare 3mL of H 2 O and 2mL DMF mixed solution.

[0054] Step 2, at room temperature, weigh L (0.0316g, 0.1mmol) and CuCl 2 2H 2 Add O (0.0170g, 0.1mmol) to the above solution and ultrasonically dissolve it for 10-20min, then add auxiliary ligand 1,3,5-BTC (0.0105g, 0.05mmol) and stir for 20-30min to obtain a suspension.

[0055] Step 3, the suspension was transferred to a 23mL heat-resistant glass kettle with a polytetrafluoroethylene cover, heated to 95°C and kept at a constant temperature for 55h, and the temperature was programmed to cool down (5°C / h) to room temperature to obtain blue blocky crystals.

[0056] Step 4, the above-mentioned gained crystals are filtered through a filter membrane with a pore size of 22 μm, and then 3 mL (V H2O :V DMF =1:1) Washed twice with deionized water and DMF, dried at 95°C for 6.5 hours, cooled to roo...

Embodiment 3

[0058] A preparation method of a two-dimensional Cu-MOF fluorescent probe material, comprising the following steps:

[0059] Step 1: Prepare 3mL of H 2 O and 2mL DMF mixed solution.

[0060] Step 2, at room temperature, weigh L (0.0316g, 0.1mmol) and CuSO 4 ·5H 2 Add O (0.0250g, 0.1mmol) to the above solution and ultrasonically dissolve it for 10-20min, then add auxiliary ligand 1,3,5-BTC (0.0105g, 0.05mmol) and stir for 20-30min to obtain a suspension.

[0061] Step 3, the suspension was transferred to a 23mL heat-resistant glass kettle with a polytetrafluoroethylene cover, heated to 100°C and kept at a constant temperature for 65h, and the temperature was programmed to cool down (10°C / h) to room temperature to obtain blue blocky crystals.

[0062] Step 4, the above-mentioned gained crystals are filtered through a filter membrane with a pore size of 22 μm, and then 3 mL (V H2O :V DMF =1:1) Washing with deionized water and DMF for 3 times, drying at 100°C for 7 hours, coo...

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Abstract

The invention belongs to the field of fluorescent sensors, and relates to a two-dimensional Cu-MOF fluorescent probe material as well as a preparation method and application thereof. The structural formula of the fluorescent probe material is [Cu2 (L) 2 (1, 3, 5-BTC) (HCOO)] n.3nH2O, wherein the L ligand is self-made bis (4-(1H-1, 2, 4-triazole-1-yl) phenyl) ketone. The preparation method of the two-dimensional Cu-MOF comprises the following steps of: well mixing a ligand L, a soluble copper salt, H2O, DMF and an auxiliary ligand, heating for reaction, and carrying out programmed cooling to room temperature to obtain the two-dimensional Cu-MOF. The fluorescent probe material is used for detecting Fe < 3 + > ions in a water body and shows relatively high sensitivity, stability and recoverability, and the method is simple in preparation, low in cost, small in pollution and easy to operate and implement.

Description

technical field [0001] The invention belongs to the technical field of fluorescent sensors, and relates to a two-dimensional Cu-MOF fluorescent probe material and a preparation method and application thereof. Background technique [0002] Metal-organic coordination polymers are a hot spot in the research of inorganic chemistry. It is a kind of metal-centered ion and multi-dentate bridging organic ligands containing oxygen and nitrogen that self-assemble through coordination bonds, hydrogen bonds and other interactions. Compounds with permanent crystal structures are also known as metal-organic frameworks (MOFs). Due to its high proportion of metal ions, complete framework structure, large specific surface area and high porosity, it shows unlimited potential in fluorescence, magnetism, gas adsorption and catalysis. Using MOF as a fluorescent probe material also shows strong sensitivity, stability and recyclability, and the method is simple to prepare, low in cost, less pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/643C09K2211/188G01N2021/6432
Inventor 程美令刘政刘露赵玉婷
Owner CHANGZHOU UNIV
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