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Simple pyridinedicarboxylic acid rare earth complex and preparation method thereof

A technology for picidinedicarboxylic acid and complexes, which is applied in the field of simple pyridinecarboxylic acid rare earth complexes and their preparation, can solve the problems of easy decomposition and low thermal stability of organic ligands, and achieve long antibacterial time, mild process conditions, The effect of simple equipment

Inactive Publication Date: 2010-06-09
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic ligand provided by this patent has low thermal stability and is prone to decomposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take by weighing yttrium chloride 0.1175g and be dissolved in 10mL water and make solution (A1), 0.3010g pyridine-2,6-dicarboxylic acid (pydcH 2 ) was dissolved in 30 mL of water at 60° C. to prepare a solution (B1).

[0039] Add solution (A1) dropwise to solution (B1), and after stirring at 60°C for 20 minutes, a large amount of white precipitate appeared; -1 The NaOH solution adjusts the pH value of the reaction system at about 6.5. After continuing to stir and react at 60°C for 4h, it was allowed to stand at room temperature for 24h. Filtration, washing, and vacuum drying at 60°C, finally Na 3 Y(pydc) 3 12H 2 O simple rare earth metal organic complexes.

Embodiment 2

[0041] Take by weighing yttrium nitrate 0.1658g and be dissolved in 10mL ethanol and make solution (A2), 0.3010g pyridine-2,6-dicarboxylic acid (pydcH 2 ) was dissolved in 30 mL of ethanol at 60° C. to prepare a solution (B2).

[0042] The solution (A2) was added dropwise to the solution (B2), and after stirring at 60°C for 10 minutes, a large amount of white precipitate appeared; after stirring and reacting at 60°C for 3 hours, it was allowed to stand at room temperature for 24 hours. Filter, wash, and dry under vacuum at 60°C to finally obtain Y(pydcH) 3 2H 2 O simple rare earth metal organic complexes.

Embodiment 3

[0044] Take by weighing yttrium nitrate 0.1658g and be dissolved in 10mL ethanol and make solution (A3), 0.3010g pyridine-2,6-dicarboxylic acid (pydcH 2 ) was dissolved in 30 mL of pyridine (py) solution at 60° C. to prepare a solution (B3).

[0045] The solution (A3) was added dropwise to the solution (B3), and after stirring at 60°C for 15 minutes, a large amount of white precipitate appeared; after stirring and reacting at 60°C for 4 hours, it was allowed to stand at room temperature for 24 hours. Filter, wash with ethanol aqueous solution with a volume ratio of 1:1, and dry under vacuum at 60°C to finally obtain Y(pyH) 3 (pydc)3 ·3H 2 O simple rare earth metal organic complexes.

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Abstract

The invention relates to a simple pyridinedicarboxylic acid rare earth complex as well as a preparation method and application thereof. The simple pyridinedicarboxylic acid rare earth complex is characterized by having the following chemical general formula: MxREy(pydcH)a(pydc)b.n H2O and being used as a rare earth antibacterial agent. The invention has moderate process conditions, simple needed equipment and convenient operation; in addition, the obtained simple pyridinedicarboxylic acid rare earth complex has high antibiosis efficiency, broad antibiosis spectrum, long antibiosis aging, and the like, has better antibiosis effect on colibacillus, staphylococcus aureus, and the like and can be widely used for various antibacterial materials.

Description

technical field [0001] The invention relates to a class of simple rare earth complexes of pyridine carboxylic acid and a preparation method thereof, in particular to a class of simple rare earth complexes with pyridinedicarboxylic acid and its derivatives as ligands. Background technique [0002] Rare earth elements include scandium, yttrium, and lanthanides, a total of 16 elements. Because they have the same ionic charge and close radius, their properties are very similar. Rare earth salts and their complexes can be used as materials such as luminescence, magnetism, catalysis, gas sensing, and superconductivity, and are widely used in many fields of industrial production and scientific research. Rare earth compounds are widely used in medicine, agriculture, biochemistry and the environment. The application of purification and other aspects is a new field, especially in the aspect of antibacterial materials, rare earth salts and their organic complexes have attracted much at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C07D213/79A01P1/00A01P3/00
Inventor 蔡梦军陈建定吴秋芳马新胜李福清杨景辉
Owner EAST CHINA UNIV OF SCI & TECH
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