Mixed organic carboxylic acid containing rare earth complex as well as preparation method and application of mixed organic carboxylic acid containing rare earth complex

A technology of complexes and mixed ligands, which is applied in the field of metal-organic coordination compounds and their molecular-based fluorescent magnetic materials, can solve the problems of shallow research on luminescence properties, and achieve good reproducibility, high thermal stability and phase purity, The effect of high yield

Inactive Publication Date: 2014-08-20
TIANJIN NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction methods and strategies of rare earth metal complexes with rigid aromatic carboxylic acids and nitrogen-containing heterocyclic carboxylic acids as mixed ligands, as well as related research on luminescent properties are still shallow. The relationship between performance, especially the influence of the molecular structure of fluorescent compounds and the surrounding environment on the spectral behavior and luminous intensity of the compound and the understanding of its laws will definitely make people use fluorescent compounds as fluorescent dyes and electroluminescent materials. , photoconductive materials, energy conversion materials and probes will be of great significance

Method used

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  • Mixed organic carboxylic acid containing rare earth complex as well as preparation method and application of mixed organic carboxylic acid containing rare earth complex
  • Mixed organic carboxylic acid containing rare earth complex as well as preparation method and application of mixed organic carboxylic acid containing rare earth complex
  • Mixed organic carboxylic acid containing rare earth complex as well as preparation method and application of mixed organic carboxylic acid containing rare earth complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Rare earth metal complexes based on 1-naphthoic acid and 2-pyrazinecarboxylic acid as mixed ligands A Synthesis:

[0028] Dissolve 1-naphthoic acid (0.2 mmol, 34.4 mg), 2-pyrazinecarboxylic acid (0.2 mmol, 24.8 mg) and dysprosium nitrate hexahydrate (0.15 mmol, 68.5 mg) in double distilled water (6.0 mL) and In methanol (4.0 mL), adjust the pH to 4 with triethylamine, stir for a few minutes and then seal it in a hydrothermal kettle. At 170 o After being kept at C for three days, at 3.0 °C·h -1 After cooling down to room temperature, colorless lumpy crystals were obtained by the rate program, which was then washed with methanol and dried in air.

Embodiment 2

[0030] Rare earth metal complexes based on 1-naphthoic acid and 2-pyrazinecarboxylic acid as mixed ligands B Synthesis:

[0031] Dissolve 1-naphthoic acid (0.2 mmol, 34.4 mg), 2-pyrazinecarboxylic acid (0.2 mmol, 24.8 mg) and gadolinium nitrate hexahydrate (0.2 mmol, 90.3 mg) in double distilled water (6.0 mL) and In methanol (4.0 mL), adjust the pH to 4 with triethylamine, stir for a few minutes and then seal it in a hydrothermal kettle. After keeping it at 160℃ for three days, at 3.0℃·h -1 After cooling down to room temperature, colorless lumpy crystals were obtained by the rate program, which was then washed with methanol and dried in air.

Embodiment 3

[0033] Rare earth metal complexes based on 1-naphthoic acid and 2-pyrazinecarboxylic acid as mixed ligands C Synthesis:

[0034] Dissolve 1-naphthoic acid (0.25 mmol, 43.0 mg), 2-pyrazinecarboxylic acid (0.2 mmol, 24.8 mg) and ytterbium nitrate pentahydrate (0.15 mmol, 74.9 mg) in double distilled water (4.0 mL) and In methanol (6.0 mL), adjust the pH to 5 with triethylamine, stir for a few minutes and then seal in a hydrothermal kettle. After keeping it at 170°C for three days, use 3.0°C·h -1 After cooling down to room temperature, colorless lumpy crystals were obtained by the rate program, which was then washed with methanol and dried in air.

[0035] Prepared by the present invention (Examples 1-3, A - C ) The structure of the rare earth metal complex containing 1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligand is as follows:

[0036] (1) Crystal structure determination ( figure 1 )

[0037] Select single crystals of appropriate size under a microscope, and use Mo-Kα r...

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Abstract

The invention relates to a 1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligand containing rare earth metal complex as well as a preparation method and an application of the1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligand containing rare earth metal complex. The complex has the chemical formula as follows: [Ln(mu3-OH)(NA)(pyzc)], wherein Ln is a lanthanide rare earth ion Dy(III), Gd(III) or Yb(III), NA<-> is the univalent anion of 1-naphthoic acid, and pyzc<-> is the univalent anion of 2-pyrazinecarboxylic acid. The complex is prepared by using a solvothermal method and is relatively high in yield and good in repeatability. A fluorescent material of the complex is the first 1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligand containing rare earth metal complex, can emit an emission peak with a rare earth ion characteristic or an emission peak of a ligand in a solid state and can be used as a molecular-based fluorescent material to exert a huge application value in the field of material science.

Description

[0001] Statement Regarding Funding Research or Development [0002] The application for this invention has been funded by the National Natural Science Foundation of China (fund numbers: 21171129 and 21173157) and the Tianjin Higher Education Science and Technology Development Fund Project (fund number: 2012ZD01). technical field [0003] The invention relates to the technical field of metal-organic coordination compounds and molecular-based fluorescent magnetic materials, in particular to the preparation method and application of rare earth metal complexes containing 1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligands. The compound is the first rare earth metal complex containing both 1-naphthoic acid and 2-pyrazinecarboxylic acid mixed ligands, and its optical properties make it applicable as a molecular-based optical material in the field of material science. Background technique [0004] Rare earth complexes are a class of coordination chemicals formed by organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
Inventor 杨恩翠赵小军李言刘忠义
Owner TIANJIN NORMAL UNIVERSITY
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