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Tb coordination polymer luminescent material based on two kinds of rigid ligands and preparation method thereof

A technology of coordination polymers and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve problems such as poor dispersion, poor stability of doped materials, and decrease in fluorescence intensity

Inactive Publication Date: 2020-07-07
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor dispersion of rare earth complexes in the polymer matrix and the disadvantages of easy phase separation from the matrix, the stability of doped materials is poor, and concentration quenching occurs between fluorescent molecules, resulting in a decrease in fluorescence intensity.

Method used

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  • Tb coordination polymer luminescent material based on two kinds of rigid ligands and preparation method thereof
  • Tb coordination polymer luminescent material based on two kinds of rigid ligands and preparation method thereof
  • Tb coordination polymer luminescent material based on two kinds of rigid ligands and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw materials: glacial acetic acid, dilute hydrochloric acid, NaOH solution, ethanol, DMF, Tb 4 o 7 , are analytically pure, were supplied by Shanghai Sinopharm Company, Tianjin Damao Company, Xi'an Pharmaceutical Company, Luoyang Chemical Reagent Company, and Beijing Fontes Chemical Materials Co., Ltd.

[0029] 1. Preparation of organic ligand mixed solution:

[0030] a. Take distilled water and move it into a three-necked flask, weigh Tfpa and phen and add it to the three-necked flask (the weight of 3,4,5,6-tetrafluoro-1,2-phthalic acid and 1,10-phenanthroline The ratio is 1:1), and add dilute glacial acetic acid solution in batches to adjust the pH to 3.0 to obtain an organic ligand solution, which is set aside.

[0031] Tfpa is 3,4,5,6-tetrafluoro-1,2-phthalic acid, Tfba=2,3,4,5-tetrafluoro-benzoic acid, phen=1,10-Phenanthroline, Chinese name: 1 , 10-phenanthroline, the structural formulas are as follows:

[0032]

[0033] Tfpa phen

[0034] 2. Preparation...

Embodiment 2

[0043] 1. Preparation of organic ligand mixed solution:

[0044] a. Take distilled water and move it into a three-necked flask, weigh Tfpa and phen and add it to the three-necked flask (the weight of 3,4,5,6-tetrafluoro-1,2-phthalic acid and 1,10-phenanthroline The ratio is 1:1), and add dilute glacial acetic acid solution in batches to adjust the pH to 4.0 to obtain an organic ligand solution, which is set aside.

[0045] 2. Preparation of precursor solution:

[0046] b. Add the organic ligand solution into the mixture of water and organic solvent (the volume ratio of water and organic solvent in the mixture of water and organic solvent is 2:1, and the organic solvent is DMF), every 0.1mol3,4,5 , 6-Tetrafluoro-1,2-phthalic acid was added to a mixture of 20ml of water and an organic solvent, and then Tb(NO 3 ) 3 ·6H 2 O (add 0.01mol of Tb(NO 3 ) 3 ·6H 2 O), stir well and add dilute HNO 3 , adjust the pH value to 5.0 to obtain a precursor solution and set it aside.

[...

Embodiment 3

[0050] 1. Preparation of organic ligand mixed solution:

[0051] a. Take distilled water and move it into a three-necked flask, weigh Tfpa and phen and add it to the three-necked flask (the weight of 3,4,5,6-tetrafluoro-1,2-phthalic acid and 1,10-phenanthroline The ratio is 1:1), and adding dilute glacial acetic acid solution in batches to adjust the pH to 5.0 to obtain an organic ligand solution for later use.

[0052] 2. Preparation of precursor solution:

[0053] b. Add the organic ligand solution into the mixture of water and organic solvent (the volume ratio of water and organic solvent in the mixture of water and organic solvent is 1:1, and the organic solvent is propanol), every 0.1mol3,4, 5,6-Tetrafluoro-1,2-phthalic acid was added to a mixture of 40ml water and organic solvent, then Tb 4 o 7 (Add 0.015mol of Tb per 0.1mo of 3,4,5,6-tetrafluoro-1,2-phthalic acid 4 o 7 ), stir well and add dilute HNO 3 , adjust the pH value to 6.0 to obtain a precursor solution an...

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Abstract

The invention relates to a Tb coordination polymer luminescent material based on two rigid ligands and a preparation method thereof. The chemical formula of the luminescent material is: {[Tb(Tfpa) 3 Tfba (phen) 3 ·3H 2 O]} n , wherein, n is greater than 1, wherein, Tfpa is 3,4,5,6-tetrafluoro-1,2-phthalic acid, Tfba is 2,3,4,5-tetrafluoro-benzoic acid, and phen is 1 ,10‑o-phenanthroline, the material can be excited by near-ultraviolet light and emit green fluorescence. The polymer luminescent material prepared by the present invention has good crystallinity, non-toxicity, no pollution, high thermal stability, excellent luminescent performance, low raw material cost, simple preparation process equipment, suitable for industrial production, and can meet the requirements of rare earth phosphors. , Tricolor fluorescent lamps, public display, lighting application requirements.

Description

technical field [0001] The invention relates to the technical field of rare earth luminescent materials, in particular to a Tb coordination polymer luminescent material based on two rigid ligands and a preparation method thereof. Background technique [0002] Since the invention of the three-primary-color fluorescent lamp by the Liverpool Company in the Netherlands in 1979, the rare-earth three-primary-color luminescent material and its preparation method have always been the focus of attention. Rare earth trichromatic luminescent materials, especially fluorescent powder for lamps and light storage materials, have been widely used in the fields of lighting and display due to their advantages of high luminous efficiency, long life, and good color rendering. According to different excitation sources, rare earth luminescent materials can be divided into the following types: photoluminescence excited in the ultraviolet and visible regions, cathode ray tubes excited by electron b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06
CPCC08G83/008C09K11/06C09K2211/182
Inventor 冯勋王河林陈海鹏陈鑫梁青如岳凌云马芬马录芳
Owner LUOYANG NORMAL UNIV