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Rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as mixed ligand, and preparation method and application thereof

A technology of isophthalic acid and coordination polymers, applied in the field of rare earth organic coordination polymer materials, can solve the problem of less synthesis of rare earth coordination polymers, etc., and achieve easy large-scale industrial production, high yield and good application foreground effect

Active Publication Date: 2012-12-19
广东炜林纳新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, very little synthesis has been done on rare earth coordination polymers

Method used

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  • Rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as mixed ligand, and preparation method and application thereof
  • Rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as mixed ligand, and preparation method and application thereof
  • Rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as mixed ligand, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: Preparation of rare earth organic coordination polymer

[0051] Pr(NO 3 ) 3 ·6H 2 O 218mg (0.5mmol), isophthalic acid 83mg (0.5mmol), 2-picolinic acid 123mg (1mmol), 2,2'-bipyridine 78mg (0.5mmol) dissolved in 15ml of distilled water, stirred evenly, and then used hydroxide The sodium solution adjusts the pH value of the reaction system = 9-10, then adds it to the reaction kettle, heats up, reacts at 130°C for 48h, gradually lowers the temperature to room temperature, filters, washes with water, and drys to obtain green massive crystals. The obtained crystals were collected on the Rigaku RAXIS-RAPID single crystal X-ray diffractometer of Rigaku Corporation, using graphite monochromatized molybdenum target MoKα rays (λ=0.71073?), and diffracted at 293(2) K in an ω scan mode. data. The initial structure of the crystal was solved by the direct method using the SHELX-97 program, and then the coordinates of all non-hydrogen atoms were obtained by the difference Four...

Embodiment 2

[0060] Example 2 Preparation of rare earth organic coordination polymer

[0061] Will Nd 2 O 3 84mg (0.25mmol), 623mg (3.75mmol) of isophthalic acid, 461mg (3.75mmol) of 2-picolinic acid, 390mg (2.5mmol) of 4,4'-bipyridine were dissolved in 40ml of distilled water and 10ml of methanol, and stirred well. Adjust the pH value of the reaction system = 6-7 with hydrochloric acid, then add it to the reaction kettle, heat it up, react at 150°C for 24h, gradually lower the temperature to room temperature, filter, wash with water, and dry to obtain purple massive crystals. The obtained crystal was collected on the Rigaku RAXIS-RAPID single crystal X-ray diffractometer of Rigaku Corporation, using graphite monochromatized molybdenum target MoKα rays (λ=0.71073?), and diffracted at 293(2) K in an ω scan mode. data. The initial structure of the crystal was solved by the direct method using the SHELX-97 program, and then the coordinates of all non-hydrogen atoms were obtained by the differe...

Embodiment 3

[0070] Example 3 Preparation of rare earth organic coordination polymer

[0071] EuCl 3 ·6H 2 O 183mg (0.5mmol), isophthalic acid 166mg (1.0mmol), 2-picolinic acid 246mg (2mmol), imidazole 68mg (1.0mmol) dissolved in 10ml distilled water and 10ml ethanol, stir evenly, adjust with potassium hydroxide solution The pH value of the reaction system = 8-9, then added to the reaction kettle, heated to increase, reacted at a temperature of 80°C for 240h, gradually cooled to room temperature, filtered, washed with water, and dried to obtain pale yellow block crystals. The obtained crystals were collected on the Rigaku RAXIS-RAPID single crystal X-ray diffractometer of Rigaku Corporation, using graphite monochromatized molybdenum target MoKα rays (λ=0.71073?), and diffracted at 293(2) K in an ω scan mode. data. The initial structure of the crystal was solved by the direct method using the SHELX-97 program, and then the coordinates of all non-hydrogen atoms were obtained by the difference ...

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Abstract

The invention discloses a rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as a mixed ligand, and a preparation method and application thereof. The preparation method is characterized by comprising the following steps: dissolving a rare-earth compound, m-phthalic acid, 2-pyridylformic acid and a nitrogen-containing compound in a solvent, wherein the mol ratio of rare-earth compound to m-phthalic acid is 1:(0.05-15), the mol ratio of rare-earth compound to 2-pyridylformic acid is 1:(0.05-15), the mol ratio of rare-earth compound to nitrogen-containing compound is 1:(0.05-15), and the mol ratio of rare-earth compound to solvent is 1:(500-10000); evenly mixing, regulating the pH value of the reaction system to 5-10 with acid or alkali, and adding the reaction system into a reaction kettle; and heating to 80-300 DEG C to react for 1-240 hours, gradually cooling to room temperature, filtering, washing with water, and drying to obtain the rare-earth organic coordination polymer constructed by using m-phthalic acid and 2-pyridylformic acid as a mixed ligand.

Description

Technical field [0001] The invention relates to a rare earth organic coordination polymer constructed by a mixed ligand of isophthalic acid and 2-picolinic acid, and a preparation method and application thereof, and belongs to the field of rare earth organic coordination polymer materials. Background technique [0002] Coordination polymer (Coordination Polymer) refers to a metal-organic framework polymer with a one-dimensional, two-dimensional or three-dimensional infinite periodic network structure formed by the self-assembly of metal ion centers and organic ligands. At the same time, these compounds are also called: Inorganic-Organic Hybrid Materials (Inorganic-Organic Hybrid Materials) or Metal-Organic Frameworks (MOFs). Coordination polymers combine the characteristics of both organic polymers and coordination compounds, which are different from general organic polymers and Si-O inorganic polymers. Coordination polymers have not only covalent bonds, coordination bonds, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
Inventor 蔡博伟郑德江焕峰姚有为陈俊任颜卫戚朝荣
Owner 广东炜林纳新材料科技股份有限公司
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