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a zn 5 Cluster-based metal-organic framework material and preparation method of modified material thereof

A technology of organic framework and modified materials, applied in organic chemistry methods, organic chemistry, luminescent materials, etc., can solve the problems of long response time, low sensitivity, expensive equipment, etc., and achieve fast qualitative, good solvent stability, solvent The effect of green environmental protection

Active Publication Date: 2020-03-31
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional monitoring methods have defects such as low sensitivity, long response time, and expensive equipment

Method used

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  • a zn <sub>5</sub> Cluster-based metal-organic framework material and preparation method of modified material thereof
  • a zn <sub>5</sub> Cluster-based metal-organic framework material and preparation method of modified material thereof
  • a zn <sub>5</sub> Cluster-based metal-organic framework material and preparation method of modified material thereof

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Embodiment Construction

[0027] In this embodiment, a kind of Zn 5 Cluster-based metal-organic framework material, its chemical formula is: {[(CH 3 ) 2 NH 2 ] 2 [Zn 5 (TDA) 4 (TZ) 4 ].4DMF} n ,

[0028] In the formula: n is a natural number from 1 to positive infinity; H 2 TDA is 2,5-thiophene dicarboxylic acid; HTZ is 1H-1,2,4-triazole; DMF is N,N-dimethylformamide; there are three ligands in the basic unit of the metal framework structure Zn in the bit environment, in which Zn2 occupies the 2-heavy axis and adopts a deformed octahedral coordination mode, both Zn1 and Zn3 adopt a deformed tetrahedral coordination mode; the ligand H 2 TDA adopts two coordination modes η 1 -η 1 -μ 2 and η 1 -η 1 -η 1 -μ 3 , respectively bridged three Zn centers and two Zn centers; the ligand HTZ takes η 1 -η 1 -η 1 -μ 3 Coordination mode; 2 H 2 Chelation bridging mode adopted by TDA and 4 HTZs with 5 Zn centers, bridging into Zn 5 (COO) 2 (TZ) 4 Cluster, Zn 5 (COO) 2 (TZ) 4 Clusters are furth...

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Abstract

A Zn5-cluster-based metal-organic framework material has a chemical formula of {[(CH3)2NH2]2[Zn5(L1)4(L2)4].4DMF}n. A preparation method of the Zn5-cluster-based metal-organic framework material subjects a zinc salt and an organic ligand to solvothermal reaction. The Zn5-cluster-based metal-organic framework material can be modified via rare-earth ions. As a fluorescence probe, the Zn5-cluster-based metal-organic framework material is applicable to fluorescent recognition of aniline and benzaldehyde organic small molecules, chromate and dichromate; the modified material of the Zn5-cluster-based metal-organic framework material has correspondingly improved sensitivity to organic small molecules and chromium-containing heavy metal ions. The Zn5-cluster-based metal-organic framework materialand its modified material have high crystallinity, large crystal size and good stability, the synthetic process is simple, the yield is high, and the materials have novel structure and good solvent stability and provide significant fluorescent recognition for aniline and benzaldehyde organic small molecules and chromium-containing heavy metal ions.

Description

technical field [0001] The present invention relates to a kind of Zn 5 The invention relates to a cluster-based metal-organic framework material and a preparation method of a modified material thereof, belonging to the technical field of porous crystal materials. Background technique [0002] Metal-organic frameworks (MOFs) are porous crystalline materials formed by coordination bonds between metal ions or clusters and organic ligands. Sensors, magnetic materials, gas adsorption and separation, catalysis, photoelectricity and many other aspects have attractive application potentials, and are rapidly developing into research hotspots in the interdisciplinary fields of energy, materials and life sciences. [0003] Fluorescent sensing materials based on metal-organic frameworks are considered to be one of the most promising detection methods and are widely used to identify harmful substances such as anions, cations, and small-molecule organics. The basic principle of this met...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/06C09K11/06G01N21/64
CPCC07B2200/13C07F3/06C09K11/06C09K2211/188G01N21/6402
Inventor 邹吉勇李玲游胜勇谌开红陈衍华
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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