CN-122011418-A - One-dimensional ring chain manganese coordination polymer and preparation method and application thereof

Abstract

The invention discloses a one-dimensional ring chain manganese coordination polymer and a preparation method and application thereof, belonging to the technical field of complex synthesis and fluorescence detection. The preparation method comprises the following steps of reacting divalent manganese salt and 2- {2- [5- (4-pyridyl) -1H-1,2, 4-triazole-3-yl ] phenoxy } benzoic acid in a solvent to prepare the one-dimensional cyclic chain manganese coordination polymer. The invention adopts a solvothermal method for synthesis, has simple synthesis process, high efficiency and mild condition, and the obtained coordination polymer has good crystal stability and thermal stability, shows high specificity and sensitive detection performance on furacilin and tetracycline, has application potential as NFZ and TC specific fluorescent probes, solves the problem of the lack of a rapid, convenient and economic detection method for furacilin and tetracycline, and provides experimental data and theoretical support for designing and developing high-efficiency fluorescent sensing materials for antibiotic pollutants.

Inventors

• SUN ZAN
• ZHANG KAIXIN
• BAI CHENGJIE
• ZHOU YUHE

Assignees

• 青海民族大学

Dates

Publication Date

20260512

Application Date

20260309

Claims (7)

1. 1. The preparation method of the one-dimensional ring chain manganese coordination polymer is characterized by comprising the following steps of: The divalent manganese salt and 2- {2- [5- (4-pyridyl) -1H-1,2, 4-triazole-3-yl ] phenoxy } benzoic acid react in a solvent to prepare the one-dimensional cyclic chain manganese coordination polymer.
2. 2. The method for preparing a one-dimensional cyclic linear manganese coordination polymer according to claim 1, wherein the molar ratio of the divalent manganese salt to the 2- {2- [5- (4-pyridyl) -1H-1,2, 4-triazol-3-yl ] phenoxy } benzoic acid is (0.05-0.15): (0.02-0.06).
3. 3. The method for producing a one-dimensional cyclic manganese coordination polymer according to claim 1 or 2, wherein the divalent manganese salt comprises manganese sulfate.
4. 4. The method for preparing a one-dimensional cyclic chain manganese coordination polymer according to claim 1, wherein the solvent is a mixed solvent of N, N-dimethylformamide and water, and the volume ratio of the N, N-dimethylformamide to the water is (0.5-2): 1-10.
5. 5. The method for preparing a one-dimensional cyclic manganese coordination polymer according to claim 1, wherein the reaction temperature is 100-150 ℃ and the reaction time is 24-72 h.
6. 6. A one-dimensional cyclic manganese coordination polymer prepared by the preparation method according to any one of claims 1 to 5.
7. 7. The use of the one-dimensional cyclic coordination polymer as defined in claim 6 in furacilin and tetracycline detection.

Description

One-dimensional ring chain manganese coordination polymer and preparation method and application thereof Technical Field The invention relates to the technical field of complex synthesis and fluorescence detection, in particular to a one-dimensional cyclic chain manganese coordination polymer and a preparation method and application thereof. Background As industry evolves and population grows, human life faces multiple challenges. Excessive emissions of pollutants rapidly spread to air, soil and water have become a global significant problem threatening the environment and biological health. Among them, heavy metal pollution is of great concern due to its high carcinogenicity, which has a significant impact on global biological health. Traditional detection methods include inductively coupled plasma mass spectrometry, high performance liquid chromatography, chemiluminescence, atomic absorption spectrometry, electrochemical analysis, and the like. However, these detection methods have the disadvantages of high cost, complicated and time-consuming pretreatment steps, and the need to perform precise calibration and maintenance on the instrument regularly. Coordination Polymers (CPs) are crystalline materials formed by coordination between organic ligands and metal ions or clusters, with ordered arrangements and controlled molecular structures. Such materials are of great interest because of their unique structure and diverse topological configurations. The type of structure is determined by a number of factors, including the nature of the metal ion, organic ligand, counter ion, coordinating solvent or co-crystallizing solvent, and the ratio of metal to ligand and temperature. As a main component in constructing coordination polymers, metal ions and organic ligands are connected to each other through coordinate covalent bonds to form one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) network structures. The regulation and control of the factors have important significance for adjusting the structure and endowing the coordination polymer with application values in the fields of gas storage, molecular recognition, catalysis, magnetism, fluorescence sensing and the like. In recent years, research on fluorescence characteristics of coordination polymers has been increasing, which shows great potential in detecting organic/inorganic contaminants in aqueous solutions. Furacilin, tetracycline and their related antibiotics are not only important environmental pollutants, but also pose a threat to human health. At present, the detection method of furacilin and tetracycline generally still adopts the traditional instrument detection method, so how to develop a rapid, convenient and economic detection method based on the related technology of coordination polymer is still a difficult problem to be solved. Disclosure of Invention In order to solve the technical problems, the invention aims to provide a one-dimensional cyclic chain manganese coordination polymer and a preparation method and application thereof, so as to solve the problem that the existing detection method for furacilin and tetracycline is short of rapid, convenient and economical. The technical scheme for solving the technical problems is as follows: In a first aspect of the present invention, there is provided a method for preparing a one-dimensional cyclic chain manganese coordination polymer, comprising the steps of: The divalent manganese salt and 2- {2- [5- (4-pyridyl) -1H-1,2, 4-triazole-3-yl ] phenoxy } benzoic acid react in a solvent to prepare the one-dimensional cyclic chain manganese coordination polymer. The method has the beneficial effects that the method adopts a solvothermal method to synthesize the one-dimensional cyclic chain manganese coordination polymer, has simple synthesis process, high efficiency and mild conditions, and the obtained coordination polymer has good crystal stability and thermal stability and shows high specificity and sensitive detection performance for furacilin and tetracycline. The fluorescence quenching of furacilin on the one-dimensional ring chain manganese coordination polymer is mainly performed by static quenching, the internal filtering effect is used as an auxiliary material, a non-fluorescent compound is formed by the furacilin and the furacilin under the ground state through hydrogen bonds, the internal filtering effect caused by overlapping of superimposed spectrums is cooperated to the quenching, the furacilin is mainly performed by the internal filtering effect and is used as an auxiliary material, the absorption spectrum of the furacilin and the excitation/emission spectrum of the one-dimensional ring chain manganese coordination polymer are obviously overlapped to doubly intercept light energy, and meanwhile, a weak interaction compound is formed through polar groups. Further, the molar ratio of the divalent manganese salt to 2- {2- [5- (4-pyridyl) -1H-1,2, 4-triazol-3-yl ] phenoxy