Lead-MOF complex with fluorescent performance

A technology of fluorescent properties and complexes, applied in lead organic compounds, 4/14 group organic compounds without C-metal bonds, fluorescence/phosphorescence, etc., can solve the problems of low sensitivity, limited wide application and high cost, and achieve the Ligand dosage, low ligand dosage, time-saving effect

Inactive Publication Date: 2018-11-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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Problems solved by technology

However, the traditional detection methods have limited their wide

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  • Lead-MOF complex with fluorescent performance
  • Lead-MOF complex with fluorescent performance
  • Lead-MOF complex with fluorescent performance

Examples

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Embodiment 1

[0029] This example relates to a method for preparing 4,4',4",4"'-(perylene-1,3,6,8-tetraphenyl)tetraphenylcarboxylic acid, which specifically includes the following steps: (4-( Methoxycarbonyl)phenyl)boronic acid (1.040g, 5.80mmol), 1,3,6,8-tetrabromoperylene (0.500g, 0.97mmol), tetrakis(triphenylphosphine)palladium(0) (0.030g 0.026 mmol) and anhydrous tripotassium phosphate (1.100 g, 5.30 mmol) were charged (in the glove box) into a 20 mL microwave vial and capped. The mixture was stirred at 130°C in an oil bath under argon for 72 hours. The reaction mixture was evaporated to dryness, and the solid residue was washed with water to remove inorganic salts. The insolubles were extracted with chloroform (3 times 50 mL), the extract was dried over magnesium sulfate, and the solvent volume was reduced under vacuum. The residue was boiled in tetrahydrofuran for 2 hours and filtered; the resulting filtrate contained mainly impurities. This procedure afforded 1,3,6,8-tetrakis(4-(m...

Embodiment 2

[0031] This embodiment relates to a preparation method for preparing lead-MOFs complexes with fluorescent properties, which specifically includes the following steps:

[0032] Accurately weigh Pb(NO 3 ) 2 (33 mg, 0.1 mmol), Ligand H 4 L (5mg, 0.01mmol) was put into a 10ml glass bottle, tightened the bottle cap, then added 2ml of N,N-dimethylacetamide solution, ultrasonicated for 10min, then placed in an electric constant temperature blast drying oven, and the temperature was raised for 300min to 100°C and keep for 4320min, then at 0.1°C·min -1 Slowly cool the reaction system to room temperature. Yellow blocky crystals were obtained. Elemental analysis test value (theoretical value) / %: C: 46.39%; H: 4.77%; N: 3.61%. Actual value / % of elemental analysis: C: 45.85%; H: 4.61%; N: 3.52%.

[0033] At room temperature, powder X-ray diffraction was performed on the lead-MOFs complex prepared in this example with fluorescent properties, and the obtained PXRD spectrum was as follo...

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Abstract

The invention discloses preparation for a lead-MOF complex with fluorescent performance. The lead-MOF complex has a molecular formula of [Pb(L)0.5(DMA)(H2O)].DMA.2H2O, a structure of the complex belongs to a monoclinic crystal system C2/c space group, a basic structural unit of the crystal is obtained by symmetric operation of asymmetric units, a symmetric operation code is <1>-1/2+X, -1/2+Y, +Z;<2>1/2+X, 1/2+Y, +Z; <3>1-X, 1-Y, 1-Z, the asymmetric units have a 1/2 coordination ligand, a Pb<2+>, a coordinated DMA molecule, the Pb<2+> adopts a five-coordination mode, wherein four oxygen atomsare respectively from two different perylene derivative ligands, and another oxygen atom is from the coordinated DMA molecule DMA molecule, and an average bond length of Pb-O is shown in the description. The lead-MOF complex disclosed by the invention has the advantages of controllable preparation of the fluorescent complex

Description

technical field [0001] The invention belongs to the technical field of new materials, and specifically discloses a lead-MOFs complex with fluorescent properties. Background technique [0002] Metal-organic framework materials are being studied by more and more people because of their unique advantages-porosity, easy-to-adjust and modify pore size, and ultra-high specific surface area. They are used in many aspects such as fluorescence recognition, gas separation, and electrocatalysis Both have great applications. [0003] With the increasingly serious environmental pollution, the treatment of sewage and the reduction of excessive heavy metals in sewage have become problems to be solved urgently. However, traditional detection methods have limited their wide application in industry due to their shortcomings such as low sensitivity and high cost. Contents of the invention [0004] The purpose of the present invention is to provide a lead-MOFs complex with fluorescent prope...

Claims

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Application Information

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IPC IPC(8): C07F7/24C08G83/00C09K11/06G01N21/64
CPCC07F7/003C07B2200/13C08G83/008C09K11/06C09K2211/188G01N21/6428
Inventor 刘丹丹戴昉纳袁雪赵学波
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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