Synthesis method of two-dimensional cobalt complex, and applications of two-dimensional cobalt complex as fluorescent probe and ferroelectric material

A fluorescent probe, cobalt complex technology, applied in luminescent materials, cobalt organic compounds, material analysis by optical means, etc., can solve the difficult functional design and modification of inorganic ferroelectrics, serious environmental pollution of waste, etc. Limit research progress and other issues to achieve the effect of low cost, simple process and high yield

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

[0007] Traditional lead-containing ceramic ferroelectrics and perovskite-type inorganic ferroelectrics need to be calcined during production, which consumes a lot of energy, has low yield, causes serious environmental pollution from waste, and is difficult and brittle to form a film. constantly being innovated
In addition, the fact that inorganic-type ferroelectrics are difficult to functionally design and modify further limits research progress in this field.

Method used

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  • Synthesis method of two-dimensional cobalt complex, and applications of two-dimensional cobalt complex as fluorescent probe and ferroelectric material
  • Synthesis method of two-dimensional cobalt complex, and applications of two-dimensional cobalt complex as fluorescent probe and ferroelectric material
  • Synthesis method of two-dimensional cobalt complex, and applications of two-dimensional cobalt complex as fluorescent probe and ferroelectric material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Synthesis of ligand 1,3,5-tris(2-methyl-1-imidazolyl)benzene (TMIB)

[0028]1,3,5-tris(2-methyl -1-imidazolyl)benzene (TMIB);

[0029]

[0030] The molar ratio of 1,3,5-tribromobenzene:2-methylimidazole:potassium carbonate:cuprous oxide is 2:8:8:1; the reaction temperature is 160°C, and the reaction time is 24h. In a polar solvent, 1,3,5-tris(2-methanol) was prepared by heating 1,3,5-tribromobenzene, 2-methylimidazole, potassium carbonate and cuprous oxide in a one-pot method -1-imidazolyl)benzene (TMIB).

Embodiment 2

[0031] Embodiment 2: the synthesis of complex

[0032] 14.6mg of Co(NO 3 ) 2 ·6H 2 O, 15.9 mg of TMIB, 9.1 mg of H 2 AIP was dissolved in a mixed solution of 4mL water and 6mL DMF, ultrasonically oscillated for 5min, transferred to the polytetrafluoroethylene liner of a 25mL hydrothermal reactor, and reacted for 72 hours at a temperature of 100°C, and the resulting product was washed three times with DMF (2mL / time), to obtain purple transparent bar block crystals. Based on Co(NO 3 ) 2 ·6H 2 The calculated yield of O was as high as 73.6%.

Embodiment 3

[0033] Embodiment 3: Structural characterization of complexes

[0034] Use a microscope to select a single crystal of a suitable size, and use a Siemens (Bruker) SMART CCD diffractometer (graphite monochromator, Mo-Ka, 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

[0035] Crystallographic data of the complexes in Table 1

[0036]

[0037] R 1 =∑||F o |-|F c || / ∑|F ...

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Abstract

The invention provides a preparation method of a cobalt metal complex, and applications of the cobalt metal complex as a fluorescent probe and a ferroelectric material. The molecular formula of the complex is [Co(AIP)(TMIB)0.5.4H2O]n, wherein H2AIP is 5-aminoisophthalic acid, and TMIB is 1,3,5-tri(2-methyl-1-imidazolyl)benzene. The cobalt complex is of a two-dimensional network structure formed byself-assembling cobalt ions with AIP<2-> and TMIB ligands. The cobalt complex has an obvious fluorescence quenching effect on ferric ions and dichromate ions, can be used as the fluorescent probe, and has potential application values in the fields of environmental monitoring and life science. In addition, the cobalt complex has excellent ferroelectric properties: when an external electric field is 800 V, the residual polarization Pr is 0.936 [mu]C/cm<2>, the coercive field Ec is 352 V/cm, and the saturated polarization Ps is 1.123 [mu]C/cm<2>, so that the cobalt complex is expected to becomethe novel ferroelectric material and has a wide application prospect in the field of information storage.

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 a cobalt complex with 1,3,5-tris(2-methyl-1-imidazolyl)benzene and 5-aminoisophthalic acid as a ligand preparation and as ferric ion (Fe 3+ ), dichromate ion (Cr 2 o 7 2- ) fluorescent probes and can be used as cobalt complexes for ferroelectric materials. Background technique [0003] Ferric ion (Fe 3+ ) is an essential metal ion for life, an essential substance for the manufacture of heme and myohemoglobin, and the promotion of vitamin B metabolism. It can participate in the composition of various enzymes in organisms and participate in many important biochemical react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06C09K11/06G01N21/64
CPCC07F15/065C09K11/06C09K2211/187G01N21/643G01N2021/6432
Inventor 王俊陈宁宁贾立永
Owner YANCHENG TEACHERS UNIV
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