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A kind of binuclear cadmium organic framework complex and its preparation method and application

A technology for organic frameworks and complexes, applied in the field of binuclear cadmium organic framework complexes and their preparation, can solve the problems that have not been reported, and achieve the effect of simple preparation method, low cost and high yield

Active Publication Date: 2020-07-10
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, complexes of transition metals and 1-(4-carboxybenzyl)-2-propyl-1H-imidazole-4,5-dicarboxylic acid have not been reported

Method used

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  • A kind of binuclear cadmium organic framework complex and its preparation method and application
  • A kind of binuclear cadmium organic framework complex and its preparation method and application
  • A kind of binuclear cadmium organic framework complex and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1. [Cd 2 (cpima)(Hcpimda)(H 2 O)] n preparation method

[0019] 1) Weigh 0.05mmol H 3 cpimda with 0.1 mmol CdCl 2· 2.5H 2 O was placed in a 20ml Teflon tube, and 10ml H was added 2 O and 2ml CH 3 CN, then the polytetrafluoroethylene tube was sealed in a stainless steel reaction kettle, the temperature was controlled at 160 ° C for 72 hours, and it was naturally lowered to room temperature to obtain colorless blocky crystals, which were washed three times with distilled water and dried in vacuum. The obtained cadmium complex The yield was 67%. Elemental analysis: theoretical value (%): C 42.54, H 3.45, N 6.48; experimental value (%): C 42.49, H 3.43, N 6.40.

Embodiment 2

[0020] Example 2. [Cd 2 (cpima)(Hcpimda)(H 2 O)] n crystal structure of

[0021] Select a single crystal of appropriate size under a microscope, use X-ray diffraction, use Bruker Smart Apex II detector to monochromatize Mo-Kα rays through graphite monochromator, scan mode ω, and collect diffraction data at room temperature. All diffraction data were subjected to semi-empirical absorption correction using the SADABS program after SAINT reduction. The crystal structure was solved by SHELXL-97 direct method. The detailed crystal determination data are shown in Table 1; the crystal structure is as figure 1 As shown, Cd(II) adopts hexa- and hepta-coordination modes.

[0022] Table 1 Crystallographic data of the complexes

[0023]

[0024]

Embodiment 3

[0025] Example 3. [Cd 2 (cpima)(Hcpimda)(H 2 O)] n phase analysis of

[0026] X-ray powder diffraction such as figure 2 As shown, the experimental diffraction pattern is consistent with the powder diffraction pattern simulated based on the crystal structure, indicating that the crystal sample is homogeneous.

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Abstract

The invention discloses a dicaryon cadmium organic framework complex as well as a preparation method and application thereof. A chemical formula of the complex is [Cd2(Mu3-cpima)(Mu3-Hcpimda)(H2O)]n,wherein H3cpimada is 1,4-benzoyl-2-propyl-1H-imidazole-4,5-dicarboxylic acid, H2cpiama is another ligand generated by the ligand H3cpimda in reaction through decomposition, namely 1,4-benzoyl-2-propyl-1H-imidazole-4-formic acid. The preparation method comprises the following steps: adding 1,4-benzoyl-2-propyl-1H-imidazole-4,5-dicarboxylic acid and cadmium chloride in the molar ratio of 1:2 into H2O and acetonitrile in the volume ratio of 10:2, and carrying out reaction for 72 hours at the temperature of 160 DEG C in a closed reaction kettle, so that colorless bulk crystals are obtained, and yield is 67%. The complex disclosed by the invention has a two-dimensional skeleton structure, and center metal cadmium (II) ions respectively adopt a hexa-coordinate mode and a seven-coordinate mode. When a light with the wavelength of 340nm is used for exciting the solid-state complex, the emission peak of the complex appears at 400nm, CIE color coordinates are (0.24, 0.21) and are located in a blue light region, and the complex can be applied as an optical material.

Description

technical field [0001] The invention relates to a transition metal complex, in particular to a binuclear cadmium organic framework complex, a preparation method thereof, and an application of the complex as a luminescent material. Background technique [0002] Metal-organic frameworks (MOFs) are a class of coordination polymers self-assembled by central metal ions and organic ligands, which have potential applications in gas adsorption, optics, magnetism, etc., which contain d 10 Compared with traditional inorganic light-emitting materials, electronic transition metal organic complexes as photoluminescent materials, on the one hand, because of their special molecular rigid structure, the molecular radiation transition probability is greatly enhanced, that is, they have high fluorescence quantum efficiency; on the other hand, they also have The high stability of inorganic substances guarantees its application as a functional material, and it is a kind of good luminescent mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/08C09K11/06
CPCC07B2200/13C07F3/003C09K11/06C09K2211/188
Inventor 李芬芳卢丽萍朱苗力
Owner SHANXI UNIV
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