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Sulfur-containing porous organic polymer material LNUs, preparation method and applications thereof

A polymer material and organic technology, applied in the field of sulfur-containing porous organic polymer materials, can solve the problems of complex design and preparation methods, limitations, poor stability of small molecules, etc., and achieve excellent thermochemical stability, wide applicability, good Effect of Pore Size and Specific Surface Area

Active Publication Date: 2019-09-06
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, many types of small molecules are designed as fluorescent sensors, such as ferrocene-based molecular sensors, rhodamine B thiolactone, naphthalimide-based small molecules, etc., for the selective and sensitive detection of heavy metal ions, but these The stability of small molecules is poor, and the design and preparation methods are complicated, which is limited in further practical applications

Method used

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  • Sulfur-containing porous organic polymer material LNUs, preparation method and applications thereof
  • Sulfur-containing porous organic polymer material LNUs, preparation method and applications thereof
  • Sulfur-containing porous organic polymer material LNUs, preparation method and applications thereof

Examples

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Effect test

Embodiment 1

[0046] The preparation of embodiment 1 sulfur-containing porous organic polymer LNU-19

[0047] Place 337mg (0.52mmol) tetra-(4-bromophenyl)ethylene and 150mg (1.04mmol) thiophene-2,5-diboronic acid dipinacid in a 100mL round bottom flask, add 60mL of N,N' -Dimethylformamide organic solvent, and then use the freezing-degassing-ventilation process to repeat the cycle three times. Then 5 mL of 2M potassium carbonate aqueous solution and 40 mg of tetrakis(triphenylphosphine)palladium were quickly added to the reaction system. Then use the freezing-degassing-ventilation process to repeat the cycle three times. Then the temperature was raised to 130°C and the reaction was stirred for 48h. After the reaction, cool to room temperature, filter, and wash the obtained precipitate with water, tetrahydrofuran, dichloromethane and acetone in sequence. Reactants or catalysts that may remain in the product. The final product was dried under vacuum at 90° C. for 10 h, and the obtained yello...

Embodiment 2

[0048] The preparation of embodiment 2 sulfur-containing porous organic polymer LNU-20

[0049] Replace 337 mg (0.52 mmol) of tetrakis-4-(bromophenyl)ethylene with 379 mg (0.52 mmol) of 2,4,6-tris(4-bromophenyl)-1,3,5-triazine, and the remaining steps Same as Example 1, the obtained dark green powder is the target sulfur-containing porous organic polymer material LNU-20.

Embodiment 3

[0050] Preparation of Example 3 Sulfur Porous Organic Polymer LNU-21

[0051] Replace 337mg (0.52mmol) of tetra-4-(bromophenyl)ethylene with 330mg (0.52mmol) of 2,2',7,7'-tetrabromo-9,9'-spirobifluorene, and carry out the rest of the steps Example 1, the obtained green powder is the target sulfur-containing porous organic polymer material LNU-21.

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Abstract

The invention belongs to the technical field of new materials, and particularly relates to a sulfur-containing porous organic polymer material LNUs, a preparation method and applications thereof. Thepreparation method comprises: placing a benzene ring-containing compound and thiophene-2,5-diboronic acid dipinacol ester in a reaction container, and adding N,N'-dimethylformamide; freezing with liquid nitrogen, vacuumizing by an oil pump, introducing nitrogen until achieving a normal pressure, and repeatedly circulating three times; rapidly adding a 2M potassium carbonate aqueous solution and acatalyst to the reaction system, freezing with liquid nitrogen, vacuumizing by an oil pump, introducing nitrogen until achieving a normal pressure, and repeatedly circulating three times; carrying outa reaction after thawing; and after completing the reaction, cooling to a room temperature, filtering, washing, placing the washed solid in a Soxhlet extractor, respectively carrying out Soxhlet extraction 36 h with tetrahydrofuran and dichloromethane to remove the remaining reactants or catalyst in the product, and carrying out vacuum drying to obtain the solid powder, ie., the target product LNUs. According to the present invention, the product can be used for selectively detecting heavy metal mercury ions in sewage.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a sulfur-containing porous organic polymer material and its preparation and application. Background technique [0002] Porous organic polymers (porous organic polymers, POPs) are a new class of porous materials formed by rigid organic structural units connected by covalent bonds through self-polymerization or copolymerization. Porous organic polymers are widely used in catalysis, separation, storage, etc. due to their large surface area, low skeletal density, large porosity, structural diversity, and high flexibility in combining various functional groups at the molecular level. , sensors, electrodes, energy and drug sustained release and other fields. [0003] With the rapid development of modern industry, the pollution caused by human activities is increasing day by day, among which heavy metal pollution directly endangers human health and causes the deterior...

Claims

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Application Information

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IPC IPC(8): C08G61/12G01N21/64
CPCC08G61/126C08G61/122G01N21/6428G01N2021/6432C08G2261/124C08G2261/3223C08G2261/3221
Inventor 闫卓君邵慧敏夏立新布乃顺贾麒宇熊启昊张驰
Owner LIAONING UNIVERSITY
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