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Synthesis of three-dimensional cadmium complex and application of three-dimensional cadmium complex as fluorescent probe

A technology of cadmium complexes and fluorescent probes, applied in cadmium organic compounds, fluorescence/phosphorescence, 2/12 group organic compounds without C-metal bonds, etc., to achieve high yield, high yield, and high sensitivity

Inactive Publication Date: 2020-10-30
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, a large number of complexes with fluorescent probe properties have been reported separately, but can simultaneously have the ability to detect Fe 3+ , CO 3 2- There are very few reports of complexes that respond

Method used

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  • Synthesis of three-dimensional cadmium complex and application of three-dimensional cadmium complex as fluorescent probe
  • Synthesis of three-dimensional cadmium complex and application of three-dimensional cadmium complex as fluorescent probe
  • Synthesis of three-dimensional cadmium complex and application of three-dimensional cadmium complex as fluorescent probe

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Experimental program
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Embodiment 1

[0024] The synthesis of embodiment 1 complex:

[0025] 15.42mg of cadmium nitrate tetrahydrate (Cd(NO 3 ) 2 4H 2 O), 20.1mg of 3,3'-(1H,1'H-2,2'-biimidazole-1,1'-dimethylene)benzoic acid (H 2 L), 20.1 mg of 1,10-rophenanthroline (1,10-Phen) were dissolved in 2 mL of N, N-dimethylformamide and 1 mL of aqueous solution, ultrasonically oscillated for 5 minutes to mix well, and after mixing, put into a hot water The mixed solution was obtained in the polytetrafluoroethylene liner of the reaction kettle, and the mixed solution was baked at 100° C. for 48 hours. After the product was taken out, the solid was separated to obtain a colorless block crystal.

Embodiment 2

[0026] The structural characterization of embodiment 2 complex:

[0027] Use a microscope to select a single crystal of a suitable size, and use a Siemens (Bruker) SMART CCD diffractometer (graphite monochromator, Mo-Ka, ) to collect diffraction data. Diffraction data were corrected for absorption using the SADABS program. Data restoration and structure elucidation were done using the SAINT and SHELXTL programs, respectively. The coordinates of all non-hydrogen atoms were determined by the least squares method, and the positions of the hydrogen atoms were obtained by the theoretical hydrogenation method. The crystal structure was refined using the least squares method. Figure 1(a) and Figure 1(b) show the basic coordination and stacking modes. Some parameters of its crystallographic diffraction point data collection and structure refinement are shown in the table below.

[0028] Crystallographic data of the complexes in Table 1

[0029]

[0030]

[0031] R 1 =∑||...

Embodiment 3

[0032] Embodiment 3: the thermogravimetric test of complex:

[0033] In order to explore the thermal stability of the cadmium complex of the present invention, a thermogravimetric test was carried out on its samples. The test conditions are: the protective gas is nitrogen at a flow rate of 20mL / min, the sweeping gas is air at a flow rate of 30mL / min, and the temperature is raised from room temperature to 1200°C at a rate of 10°C / min. Rapid weight loss within the range, which may be caused by the collapse of the crystal structure; when the temperature continues to rise, the remaining mass of the cadmium complex of the present invention remains basically unchanged, because relatively stable cadmium oxide is finally generated. The quality of the cadmium complex of the present invention does not change violently before 350 ° C, indicating that the thermal stability of the cadmium complex of the present invention is better ( figure 2 ).

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Abstract

The invention provides a cadmium metal complex, a preparation method and application of the cadmium metal complex in detection of ferric ions (Fe < 3 + >) and carbonate ions (CO3 < 2->). The chemicalformula of the complex is [Cd (L) (1, 10-Phen)] n, H2L is equal to 3, 3 '-(1H, 1' H-2, 2 '-biimidazole-1, 1'-dimethylene) benzoic acid, and 1, 10-Phen is equal to 1, 10-phenanthroline. The cadmium metal complex is of a three-dimensional structure formed by self-assembling cadmium ions, L2 <-> and 1, 10-Phen ligands. Experimental results show that the cadmium complex has good fluorescence property,can efficiently detect iron ions and carbonate ions in water, is stable in structure and reusable, and has potential application value in the field of environmental pollution detection. The complex is simple in synthesis process, mild in reaction condition and convenient to use, and a new means is provided for detection of harmful substances in the environment.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis and organometallic chemistry, and specifically relates to a 3,3'-(1H,1'H-2,2'-biimidazole-1,1'-dimethylene)benzoic acid Preparation of three-dimensional cadmium complexes with 1,10-phenanthroline as a ligand and their use as ferric ions (Fe 3+ ), carbonate ion (CO 3 2- ) application of fluorescent probes. Background technique [0002] Compared with traditional luminescent materials, complex fluorescent materials have attracted much attention due to their high chemical stability of inorganic materials and high quantum yield of organic materials. The fluorescence properties of the complexes are affected by the electronic configuration and energy level of the metal ion itself, the coordination configuration and coordination environment, the ligands, and external conditions such as solvent (solution fluorescence), temperature and other factors. Especially complexes with channels, exposed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08C09K11/06G01N21/64
CPCC07B2200/13C07F3/003C09K11/06C09K2211/1029C09K2211/1044C09K2211/188G01N21/6428G01N21/643G01N2021/6432
Inventor 王俊张晨陈宁宁贾立永陶建清张康峰岳煜菲贾海瑞梁良俞梦娇
Owner YANCHENG TEACHERS UNIV
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