Three-dimensional cadmium complex, preparation method thereof, and application of cadmium metal complex as fluorescent probe and photodegradation catalyst

A technology of fluorescent probes and cadmium complexes, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, fluorescence/phosphorescence, etc., achieving high yield, good reproducibility, and high yield high effect

Inactive Publication Date: 2020-03-17
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In summary, a large number of complexes with fluorescence and photodegradation have been reported respectively, but can also have 3+ 、Cr 2 o 7 2- , NZF and NFT have responsive complexes with obvious photodegradation properties are very few reports

Method used

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  • Three-dimensional cadmium complex, preparation method thereof, and application of cadmium metal complex as fluorescent probe and photodegradation catalyst
  • Three-dimensional cadmium complex, preparation method thereof, and application of cadmium metal complex as fluorescent probe and photodegradation catalyst
  • Three-dimensional cadmium complex, preparation method thereof, and application of cadmium metal complex as fluorescent probe and photodegradation catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The synthesis of embodiment 1 complex:

[0038] 15.4 mg of cadmium nitrate tetrahydrate (Cd(NO 3 ) 2 4H 2 O), 18.71mg of 1,1'-(4-carboxyphenyl)-2,2'-biimidazole (H 2 L) was dissolved in 10mL water, stirred for half an hour, transferred to the polytetrafluoroethylene liner of a 25mL hydrothermal reactor, and reacted for 72 hours at a temperature of 120°C, and the resulting product was washed three times with ethanol (2mL / time) to obtain Colorless transparent massive crystals. Yield based on metal Cd 52.5%.

Embodiment 2

[0039] The structural characterization of embodiment 2 complex:

[0040] The crystal structure adopts Bruker Smart CCD X-ray single crystal diffractometer, and at 296(2) K, selects crystals with a size of 0.35×0.15×0.12mm, and uses MoKα rays (λ=0.07107nm) that have been monochromated by graphite as The incident radiation source is used to collect diffraction points by ω / 2θ scanning, the unit cell parameters are refined by the least square method, and the collected data is corrected for absorption with the SADABS program. The structure of the complex was solved by the direct method, the coordinates of non-hydrogen atoms and the anisotropy temperature factor were refined by the full-matrix least-squares method, and all calculations were completed by the SHELXTL program. The detailed crystallographic parameters are listed in Table 1. [Cd(L)(H 2 O)·5H 2 O] n The crystal structure diagram and three-dimensional structure diagram are shown in Fig. 1(a) and Fig. 1(b).

[0041] Cr...

Embodiment 3

[0043] The fluorescent property of embodiment 3 complexes:

[0044] LS-55 fluorescence spectrometer was used to test the fluorescence properties of the complexes at room temperature. figure 2 It is the solid-state fluorescence image of the cadmium complex prepared in Example 1, indicating that the material has strong fluorescence properties. Such as image 3 As shown, the complex exhibits strong luminescent properties in aqueous solution.

[0045] It can be seen from Figure 4 (a) that in the selected metal ion aqueous solution, the fluorescence intensity of the cadmium complex prepared in Example 1 shows a dependence on the metal ion, and the fluorescence intensity on the Fe 3+ exhibits a complete fluorescence quenching effect and is expected to become a Fe 3+ fluorescent probes.

[0046] It can be seen from Figure 5(a) that in the selected anion aqueous solution, the fluorescence intensity of the cadmium complex prepared in Example 1 shows a dependence on the type of anio...

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Abstract

The invention provides a preparation method of a cadmium metal complex and an application of the cadmium metal complex as a fluorescent probe and a photodegradation catalyst. The chemical formula of the complex is [Cd(L)(H2O).5H2O]n, wherein H2L is 1,1'-(4-carboxylphenyl)-2,2'-biimidazole. The cadmium metal complex is of a three-dimensional structure formed by self-assembling cadmium ions with anL<2-> ligand. The cadmium complex has an obvious fluorescence quenching effect on ferric ions, dichromate ions and antibiotics furacilin and nitrofurantoin, can be used as the fluorescent probe, and has potential application values in the fields of environmental monitoring and life science. In addition, the cadmium complex has stable and efficient catalytic photodegradation dye properties: methylene blue, methyl orange and rhodamine B are basically and completely degraded within 60 min under the condition of visible light, and the cadmium complex is easy to separate and can be recycled for multiple times.

Description

[0001] Statement on funding research or development: This invention is carried out under the support of a prospective joint research project (Grant no.BY2016066-08) of the Jiangsu Provincial Policy Guidance Program (Industry-University-Research Cooperation). technical field [0002] The invention belongs to the technical field of organic synthesis and organometallic chemistry, and specifically relates to the preparation of a three-dimensional cadmium complex with 1,1'-(4-carboxyphenyl)-2,2'-biimidazole as a ligand and its use as Ferric ion (Fe 3+ ), dichromate ion (Cr 2 o 7 2- ), nitrofurazone (NZF) and nitrofurantoin (NFT) antibiotic fluorescent probes and can effectively degrade cadmium complexes of methylene blue (MB), rhodamine B (RhB), methyl orange (MO) dyes. Background technique [0003] Compared with traditional luminescent materials, complex fluorescent materials have attracted much attention due to their high chemical stability of inorganic materials and high qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64B01J31/22C02F1/30C02F101/30
CPCB01J31/1691B01J35/004C02F1/30C02F2101/308C02F2305/10C08G83/008C09K11/06C09K2211/188G01N21/643G01N21/6486
Inventor 王俊陈宁宁许晓娟
Owner YANCHENG TEACHERS UNIV
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