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V-shaped triacid porous fluorescence coordination polymer, and preparation method and application thereof

A technology of coordination polymers and polymers, applied in fluorescence/phosphorescence, cadmium organic compounds, chemical instruments and methods, etc., can solve the problems of high synthesis cost, low fluorescence intensity, poor monochromaticity, etc. Good stability and high pyrolysis temperature

Active Publication Date: 2016-10-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of traditional fluorescent materials such as high synthesis cost, large pollution, low fluorescence intensity, and poor monochromaticity, and provide a V-type triacid porous fluorescent coordination polymer and its preparation method and application

Method used

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  • V-shaped triacid porous fluorescence coordination polymer, and preparation method and application thereof
  • V-shaped triacid porous fluorescence coordination polymer, and preparation method and application thereof
  • V-shaped triacid porous fluorescence coordination polymer, and preparation method and application thereof

Examples

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Embodiment 1

[0026] A V-type triacid porous fluorescent coordination polymer, the preparation method comprising the following steps:

[0027] 1) Add 0.75mmol o-phenanthroline and 0.5mmol 2-(4-carboxyphenoxy)terephthalic acid to water and N,N-dimethylformamide at a molar ratio of 1.5:1 In the mixed solvent, the volume ratio of water and N,N-dimethylformamide is 1:1, the moles of 2-(4-carboxyphenoxy)terephthalic acid and N,N-dimethylformamide The ratio is 1:500, heating and stirring for 30min;

[0028] 2) Add triethylamine dropwise to the mixed solution of 1), adjust its pH to 6.5, the molar ratio of triethylamine to 2-(4-carboxyphenoxy)terephthalic acid is 0.5:1, ultrasonic After 5 minutes, continue to heat and stir for 30 minutes, and the solution is completely dissolved;

[0029] 3) Add 1mmol of Cd(NO 3 ) 2 4H 2 O is added to the solution obtained in step 2), Cd(NO 3 ) 2 4H 2 The mol ratio of O and 2-(4-carboxyphenoxy) terephthalic acid is 2:1, and light white precipitate appears ...

Embodiment 2

[0033] A V-type triacid porous fluorescent coordination polymer, the preparation method comprising the following steps:

[0034] 1) Add 0.5mmol o-phenanthroline and 0.5mmol 2-(4-carboxyphenoxy)terephthalic acid to a mixture of water and N,N-dimethylformamide in a molar ratio of 1:1 In the solvent, the volume ratio of water and N,N-dimethylformamide is 2:1, and the molar ratio of 2-(4-carboxyphenoxy)terephthalic acid and N,N-dimethylformamide is 1:300, heating and stirring for 30 minutes;

[0035] 2) Add triethylamine dropwise to the mixed solution of 1), adjust its pH to 7, the molar ratio of triethylamine to 2-(4-carboxyphenoxy)terephthalic acid is 1:1, ultrasonic After 5 minutes, continue to heat and stir for 30 minutes, and the solution is completely dissolved;

[0036] 3) 1.25mmol of Cd(NO 3 ) 2 4H 2 O is added to the solution obtained in step 2), Cd(NO 3 ) 2 4H 2 The molar ratio of O and 2-(4-carboxyphenoxy) terephthalic acid was 2.5:1, and a light white precipita...

Embodiment 3

[0039] Embodiment three, the difference based on embodiment two is:

[0040] In step 4, seal the mixed solution described in 3) in a 25ml polytetrafluoroethylene-lined steel reactor, carry out solvothermal reaction at 150°C, react for 96h under autogenous pressure, and then react at 5°C / h The rate was lowered to room temperature, and colorless blocky crystals were obtained. Wash with ether, filter, and dry naturally to obtain the V-type triacid porous fluorescent coordination polymer. Other steps are identical with embodiment two.

[0041] This embodiment can obtain the [Cd that productive rate is 80% 1.5 (cia) (phen) 1.5 ] n Porous fluorescent coordination polymer materials.

[0042] Among the above-mentioned embodiments, the second embodiment is the best embodiment. The V-type triacid porous fluorescent coordination polymer prepared in this example has the chemical formula [Cd 1.5 (cia) (phen) 1.5 ] n , wherein cia is a multi-acid ligand 2-(4-carboxylic acid phenoxy...

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Abstract

The invention discloses a porous fluorescence coordination polymer constructed by a V-shaped triacid organic ligand, and a preparation method and an application thereof. The chemical formula of the polymer is [Cd1.5(cia)(phen)1.5]n, the system of the polymer is a monoclinic system, and the space group of the system is a C2 / c space group, wherein cia is 2-(4-carboxylate benzoxy)terephthalic acid with a V-shaped skeleton structure, and phen is phenanthroline. The polymer is prepared through a solvothermal technology, and has a three-dimensional porous structure, and the porosity reaches 33%; the polymer has good thermal stability and high fluorescence intensity, and clear blue light and pure color can be determined from a CIE map; and the polymer also can be used to detect potassium dichromate guest molecules as a fluorescence probe. The preparation method has the advantages of simple process, easiness in enforcement, and realization of high purity and yield of crystals, and the polymer is simple to detect, has high selectivity and is a novel luminescent material.

Description

technical field [0001] The invention belongs to the field of preparation of functional porous coordination polymer materials, and in particular relates to a three-dimensional V-type triacid porous fluorescent coordination polymer, its preparation method and application. Background technique [0002] Porous fluorescent coordination polymer with luminescent properties is a new type of porous material, which belongs to the field of metal-organic coordination polymers. Compared with traditional porous materials, it has both large specific surface area and strong It has the advantages of chemical modification, strong adsorption performance, etc., and also has good optical luminescence performance. It is a fluorescent material with wide application prospects. Porous fluorescent coordination polymers with high fluorescence quantum efficiency use the holes inside the porous coordination polymers to adsorb small molecules with specific functions, which greatly affects or regulates th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08C09K11/06G01N21/64
CPCC07F3/08C09K11/06C09K2211/18G01N21/643
Inventor 张亚男殷海菊张鹏党蓓君
Owner SHAANXI UNIV OF SCI & TECH
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