Metal complex of polydentate pyridine ligand, and preparation method and application thereof

A technology of metal complexes and multidentate pyridines, applied in cadmium organic compounds, chemical instruments and methods, luminescent materials, etc., can solve problems such as high reaction temperature, poor repeatability, and high risk, and achieve high selectivity and condition Gentle, easy-to-detect effect

Inactive Publication Date: 2011-08-17
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high reaction temperature, high risk, low yield and poor repeatability in the existing preparation method of multidentate pyridine ligand metal complexes, and provide a kind of mild reaction conditions, high yield, Multidentate pyridine ligand metal complex with good reproducibility and preparation method thereof, and application of cadmium metal complex in luminescent materials

Method used

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  • Metal complex of polydentate pyridine ligand, and preparation method and application thereof
  • Metal complex of polydentate pyridine ligand, and preparation method and application thereof
  • Metal complex of polydentate pyridine ligand, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the preparation of complex

[0027] Place 0.05mmol HPDQ at the bottom of the test tube, dissolve it with 3mL of dichloromethane, and add 15ml of a mixed solution of dichloromethane / acetonitrile 1:1 volume ratio; 0.15mmol Cd(NO 3 ) 2 ·6H 2 O, dissolved with 3mL acetonitrile, placed in the upper layer of the test tube. Seal it and let it stand for 25 days. Orange blocky single crystals appear at the junction of the solution interface on the test tube wall, which is the d 10 Metal pyridine ligand complexes, or 2,3,6,7,10,11-hexa(2-pyridine)bispyrazine[2,3-f:2′,3′-h]quinoxaline complexes body of cadmium metal complexes.

Embodiment 2

[0028] Embodiment 2: the preparation of complex

[0029]Place 0.03mmol HPDQ at the bottom of the test tube, dissolve it with 3mL of chloroform, and add 15ml of a mixed solution of chloroform / acetonitrile with a volume ratio of 1:11; 0.09mmol Cd(NO 3 ) 2 ·6H 2 O, dissolved with 3mL acetonitrile, placed in the upper layer of the test tube. Seal it and let it stand for 25 days. Orange blocky single crystals appear at the junction of the solution interface on the test tube wall, which is the d 10 Metal pyridine ligand complexes, or 2,3,6,7,10,11-hexa(2-pyridine)bispyrazine[2,3-f:2′,3′-h]quinoxaline complexes body of cadmium metal complexes.

Embodiment 3

[0030] Embodiment 3: the preparation of complex

[0031] Place 0.06mmol HPDQ at the bottom of the test tube, dissolve it with 3mL of 1,2-dichloroethane, and add 15ml of a mixed solution of 1,2-dichloroethane / propionitrile in the volume ratio of 1:1.2; 0.18mmol Cd(NO 3 ) 2 ·6H 2 O, dissolved with 3mL propionitrile, placed in the upper layer of the test tube. Seal it and let it stand for 25 days. Orange blocky single crystals appear at the junction of the solution interface on the test tube wall, which is the d 10 Metal pyridine ligand complexes, or 2,3,6,7,10,11-hexa(2-pyridine)bispyrazine[2,3-f:2′,3′-h]quinoxaline complexes body of cadmium metal complexes.

[0032] Relevant characterization of complexes

[0033] (1) Determination of the crystal structure of the complex

[0034] A single crystal with a suitable size is selected under a microscope for X-ray diffraction experiments at room temperature. On the SCX-Mini single crystal diffractometer, Mo-K monochromatized by ...

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Abstract

The invention relates to a metal complex of a polydentate pyridine ligand, and a preparation method and application thereof. The metal complex is a cadmium metal complex of a 2,3,6,7,10,11-hexa(2-pyridine) dipyrazine [2,3-f:2',3'-h] quinoxaline ligand; and the method for preparing the complex by a diffusion process comprises the following steps of: putting chloralkane solution in which the 2,3,6,7,10,11-hexa(2-pyridine) dipyrazine [2,3-f:2',3'-h] quinoxaline HPDQ ligand is dissolved on a bottom layer of a test tube at the room temperature; adding mixed solution of nitrile alkane and chloralkane on the upper side of the chloralkane solution; and adding nitrile alkane solution in which metal salts and particularly Cd(NO3)2 are dissolved on the topside layer; and standing a reaction system and diffusing for 20 to 30 days to obtain a saffron yellow blocky monocrystal, namely the metal complex. In the method, the reaction condition is mild, and yield and reproducibility are high. The metal complex can be used as luminescent materials and has the wide prospect.

Description

technical field [0001] The invention relates to the field of luminescent materials, especially a class of 2,3,6,7,10,11-hexa(2-pyridine)bispyrazine[2,3-f:2′,3′-h]quinoxaline The (HPDQ) ligand metal complex and its preparation method can be used as a luminescent material and have broad application prospects. Background technique [0002] The most common application of photoluminescence is fluorescent lamps. It is the ultraviolet light generated by the gas discharge in the lamp tube that excites the luminescent powder on the tube wall to emit visible light, and its efficiency is about 5 times that of an incandescent lamp. In addition, the photoluminescence of "black lights" and other monochromatic lamps can be widely used in printing, reproduction, medical treatment, plant growth, insect trapping and decoration technology. Photoluminescence can also provide some information about the structure, composition and environmental atomic arrangement of some materials. It is a non-d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08C09K11/06
Inventor 卜显和赵强刘秀明胡同亮李瑞芳
Owner NANKAI UNIV
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