Stepped zinc aspartate coordination polymer as well as preparation method and application thereof

A technology of zinc aspartate and coordination polymer, applied in the directions of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of weak ultraviolet absorption, small extinction coefficient, enhanced toxicity, etc., and achieves convenient and simple preparation process. The effect of good crystal quality and good stability

Active Publication Date: 2022-04-05
SHANXI UNIV
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Problems solved by technology

Tetracycline, which is widely used to treat bacterial infections in animals and humans, is difficult to absorb and metabolize directly in the gastrointestinal tract of animals and humans, resulting in the residual tetracycline being excreted from the body in the form of compounds, which are further degraded by microorganisms, and in the environment Tetracyclines are less active and highly toxic, leading to the emergence of drug-resistant pathogens
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  • Stepped zinc aspartate coordination polymer as well as preparation method and application thereof
  • Stepped zinc aspartate coordination polymer as well as preparation method and application thereof
  • Stepped zinc aspartate coordination polymer as well as preparation method and application thereof

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[0031] Example 1 Preparation of zinc coordination polymer

[0032] Hide 3 CAA (13.80mg, 0.05mmol), Znso 4 · 7h 2 O (28.70 mg, 0.1 mmol), a mixture of distilled water (10.00 mL) and 100 μl NaOH (1 mol / L) was added to a polytetrafluoroethylene tube having a volume of 25 ml, and the tube was sealed in a stainless steel reaction kettle, at 120 ° C Heat was heated for 72 hours, then naturally cooled to room temperature. The colorless block crystal was collected by filtration, and then dried in the air after washing, the yield was 60.41% (in Zn 2+ count). Elemental analysis: C 12 Hide 12 NO 7 Zn (%) experimental value (theoretical): C, 41.44 (41.46), H, 3.51 (3.48), N, 4.10 (4.03).

Example Embodiment

[0033] Example 2 Determination of zinc coordination polymer crystal structure

[0034] The crystal structure was measured by X-ray diffraction. The test instrument was Bruker D8venture, and the radiation light source was a graphite monochrome monochromatic Mo-Kα ray, and the scanning mode was rotated to the Ω angle, room temperature (296K) collects diffraction data. The original data is restored by the SAINT program to absorb correction using the SADABS program. The crystal structure is solved directly by ShelXL-2014. The detailed crystal measurement data is shown in Table 1, and the crystal structure is found. figure 1 Indicated.

[0035] Table 1 Zinc coordination polymer crystallographic data

[0036]

[0037]

Example Embodiment

[0038] Example 3 Powder diffraction method analyte phase

[0039] X-ray powder diffraction results show that the polycrystalline sample test value and the single crystal structure fit value are almost agreed, indicating that the zinc coordination polymer of the present invention is pure phase, see figure 2 .

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Abstract

The invention relates to a zinc coordination polymer and fluorescence sensing application, in particular to a stepped aspartic acid zinc coordination polymer and a preparation method and application thereof, the molecular formula of the zinc coordination polymer is [Zn (mu3-caa). H2O] n, caa3-is a form of removing three protons from N-(4-carboxyl benzyl)-L-aspartic acid, and n represents the degree of polymerization. The structure of the coordination polymer is as follows: adjacent metal zinc ions are connected by N-(4-carboxyl benzyl)-L-aspartic acid ligands in a deprotonation coordination mode to form a one-dimensional infinite ladder structure, and a three-dimensional network structure is formed between chains through hydrogen bonds and Pi... Pi accumulation. Fluorescence tests show that the complex can be used for rapidly detecting tetracycline and heavy metal trivalent terbium ions in an aqueous solution, has good anti-interference performance, low detection limit and good cyclic utilization performance, and is a promising dual-response fluorescent probe.

Description

technical field [0001] The invention relates to the application fields of zinc coordination polymers and fluorescent sensing, in particular to a ladder type zinc aspartate coordination polymer and its preparation method and application. Background technique [0002] In recent decades, with the frequent reports of antibiotic and heavy metal ion pollution incidents in various water systems (such as industrial water, rivers, lakes, and groundwater), people have realized that the indiscriminate discharge of antibiotics and heavy metal pollutants has seriously harmed human beings. health and ecosystems. Tetracycline, which is widely used to treat bacterial infections in animals and humans, is difficult to absorb and metabolize directly in the gastrointestinal tract of animals and humans, resulting in the residual tetracycline being excreted from the body in the form of compounds, which are further degraded by microorganisms, and in the environment The activity of tetracycline is...

Claims

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Application Information

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IPC IPC(8): C08G83/00G01N21/64
CPCY02A20/20
Inventor 张亚桐王爱卢丽萍朱苗力
Owner SHANXI UNIV
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