Synthesis method of cadmium complex and applications of cadmium 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 thermal stability, good reproducibility, and simple process 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...

Method used

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  • Synthesis method of cadmium complex and applications of cadmium complex as fluorescent probe and photodegradation catalyst
  • Synthesis method of cadmium complex and applications of cadmium complex as fluorescent probe and photodegradation catalyst
  • Synthesis method of cadmium complex and applications of cadmium complex as fluorescent probe and photodegradation catalyst

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Embodiment 1

[0036] The synthesis of embodiment 1 complex:

[0037] 9.2 mg of cadmium chloride (CdCl 2 ), 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 45.2%.

Embodiment 2

[0038] The structural characterization of embodiment 2 complex:

[0039] 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 4 (L) 3 (DMF)Cl 2 ·H 2 O] n The crystal structure diagram and three-dimensional structure diagram are shown in Fig. 1(a) and Fig. 1(b).

...

Embodiment 3

[0042] The fluorescent property of embodiment 3 complexes:

[0043] 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. like image 3 As shown, the complex exhibits strong luminescent properties in aqueous solution.

[0044] 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.

[0045] 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 anion, ...

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Abstract

The invention provides a preparation method of a cadmium metal complex and applications of the cadmium metal complex as a fluorescent probe and a photodegradation catalyst. The chemical formula of thecomplex is [Cd4(L)3(DMF)Cl2.H2O]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 an L<2-> ligand. The cadmium complex has an obvious fluorescence quenching effect on ferric ions, dichromate ions, 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, makes methylene blue basically completely degraded within 100 minutes under the condition of visible light, 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 Jiangsu Provincial Policy Guidance Program (Industry-University-Research Cooperation)-Prospective Joint Research Project (Grant no.BY2016066-08). 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 coordination polymer with 1,1'-(4-carboxyphenyl)-2,2'-biimidazole as a ligand And as ferric ion (Fe 3+ ), dichromate ion (Cr 2 o 7 2- ), nitrofurazone (NZF) and nitrofurantoin (NFT) antibiotic fluorescent probes and the application of cadmium complexes that can effectively degrade methylene blue (MB) 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 quantum yield of organic...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/22C02F1/30C09K11/06G01N21/64C02F101/38
CPCB01J31/2243B01J35/004C02F1/30C02F2101/40C02F2305/10C08G83/008C09K11/06C09K2211/188G01N21/6428G01N21/643G01N2021/6432
Inventor 王俊陈宁宁许晓娟
Owner YANCHENG TEACHERS UNIV
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