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Metal coordination polymer and preparation method thereof

A metal coordination and polymer technology, applied in cadmium organic compounds, organic chemical methods, organic chemistry, etc., can solve the problems of different degrees of influence and insufficient depth

Active Publication Date: 2017-01-18
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the results achieved are enormous, there are still great challenges in the research of metal-organic complexes, such as how to synthesize polymers with predicted structures, that is, the structures of polymers are uncontrollable to a certain extent. Yes, this is because we have not done enough research on the influence of the complex structure so far. The complex structure is affected by many factors, and the influence of various factors is different, such as the reaction temperature when synthesizing the complex, The pH value of the solution, the coordination mode of the ion, the type of the ligand, etc. are all different

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preparation example Construction

[0051] The present invention also provides the preparation method of above-mentioned metal coordination polymer, comprises the following steps: S1) under vacuum condition, the organic ligand shown in 5-phenyl isophthalic acid, formula (I) and cadmium salt in Heating in the mixed solvent of ethanol and water reacts, obtains metal coordination compound; The mol ratio of the organic ligand shown in described 5-phenylisophthalic acid, formula (I) and cadmium ion in cadmium salt is (0.02 ~0.04): (0.02 ~ 0.04): 0.050; the volume ratio of ethanol to water is 1: (0.5 ~ 2);

[0052]

[0053] Among them, the present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0054] Under vacuum conditions, the organic ligand shown in 5-phenylisophthalic acid, formula (I) and cadmium salt are heated and reacted in the mixed solvent of ethanol and water; Wherein, the 5-phenylisophthalic acid The mol ratio of organic ligand shown in d...

Embodiment 1

[0065] Accurately weigh 7.0 mg of 5-phenylisophthalic acid (0.029 mmol), 7 mg of 1,2-mbix (organic ligand shown in formula (I), 0.026 mmol), 15 mg of cadmium nitrate (0.050 mmol), Add it to a glass tube with one end closed, and then use a syringe to inject 1.2ml of mixed solvent (V 乙醇 :V 水 =1:1) into the glass tube, vacuumize the glass tube, sinter and seal it with an alcohol blowtorch. The sealed glass tube was placed in a programmed temperature-controlled oven, slowly raised to 120°C for 8 hours, kept at this temperature for 83 hours, and then slowly lowered to 30°C after 13 hours. Open the glass tube, filter the solid matter and rinse with acetone to obtain colorless crystals, which are metal coordination polymers. The calculated yield based on Co is about 60%.

[0066] Utilize the fluorescence instrument to analyze the metal coordination polymer obtained in embodiment 1, obtain its fluorescence spectrogram, as Figure 8 shown.

Embodiment 2

[0068]Accurately weigh 7.0 mg of 5-phenylisophthalic acid (0.029 mmol), 7 mg of 1,2-mbix (organic ligand shown in formula (I), 0.026 mmol), 15 mg of cadmium nitrate (0.050 mmol), Add it to a glass tube with one end closed, and then use a syringe to inject 1.2ml of mixed solvent (V 乙醇 :V 水 =1:1) into the glass tube, vacuumize the glass tube, sinter and seal it with an alcohol blowtorch. The sealed glass tube was placed in a programmed temperature-controlled oven, slowly raised to 130°C for 9 hours, kept at this temperature for 83 hours, and then slowly lowered to 30°C after 13 hours. Open the glass tube, filter the solid matter and rinse with acetone to obtain colorless crystals, which are metal coordination polymers.

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Abstract

The invention provides a metal coordination polymer. A chemical formula of the metal coordination polymer is C44H38Cd2N4O10, and a triclinic crystal system, a P-1 space group and crystal cell parameters are show in the description, alpha = 77.493(3)o, beta = 82.102(3)o, and gamma = 86.617(2)o. Compared with the prior art, the metal coordination polymer has good thermal stability and meanwhile has better fluorescence properties.

Description

technical field [0001] The invention belongs to the technical field of coordination polymers, in particular to a metal coordination polymer and a preparation method thereof. Background technique [0002] Coordination polymers have a variety of structures, and coordination polymers have excellent porosity, huge specific surface area, and controllable specific surface area, which makes them have great application prospects in the fields of catalysis, gas adsorption, ion exchange, etc. Key research objects. [0003] Metal-organic frameworks are constructed by mixed imidazole and carboxylic acid coordination, and have unique properties due to their unique structures. So far, metal-organic polymer materials have made great progress. For example, a large number of polymers with unique structures have been synthesized by using terephthalic acid. Experimental studies have found that such polymers have shown great application value in terms of gas adsorption properties. , such as M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08
CPCC07B2200/13C07F3/08
Inventor 杨铭张奥王磊
Owner SUZHOU UNIV