Preparing method of porous metal organic frame with small organic molecule fluorescent recognition function

Abstract

The invention discloses a preparing method of a porous metal organic frame with the small organic molecule fluorescent recognition function. The preparing method includes the following steps that 1, an organic ligand 5-(4-pyridine-4-yl-benzamido)-isophthalic acid (H2PYBI) is synthesized; 2, a Zn-MOF material is synthesized, wherein Zn(NO3)2.6H2O and H2PYBI are weighed, dissolved in solvent, heated in a reaction kettle for reaction and cooled to the room temperature after reaction is finished to obtain the Zn-MOF material; 3, activated complex is prepared, wherein the Zn-MOF material in the heating step 2 to remove guest molecules so as to obtain the activated complex. Compared with the prior art, the porous metal organic frame with the small organic molecule fluorescent recognition function has the structural advantages of high porosity, large specific surface area, regular pore passages and an adjustable skeleton, is high in heat stability and chemical stability and can be directly prepared into a device for detecting nitrobenzene.

Description

technical field [0001] The invention relates to the application field of metal organic framework materials, in particular to a method for preparing a porous metal organic framework with a fluorescent recognition function for small organic molecules. Background technique [0002] Metal-organic framework complexes (Metal-Organic Frameworks) are crystalline materials with a periodic network structure formed through the self-assembly process of metal ions and organic ligands. This material is a branch of the introduction of the concept of crystal engineering into the design of supramolecular architecture. Metal-organic framework materials are the product of the combination of structural chemistry, material chemistry, organic chemistry and crystal engineering. In recent years, they have been continuously extended to the fields of biochemistry, medicinal chemistry and green chemistry. As a new research field, metal-organic framework materials have only been studied for decades, b...

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Problems solved by technology

Interestingly, benzene, toluene, chlorobenzene, phenol, o-cresol and p-bromophenol 2 (1,4-BDC) 3 (H 2 O) 2 (H 2 O) 2 There is basically no effect on the fluorescence intensity; while some nitroaromatic compounds, such as nitrobenzene, 2,4-dinitrotoluene and 2,4,6-trinitrotoluene, have a significant decrease in the fluorescence intensity

However, several nitroaromatic compounds have little effect on the fluorescence intensity of Eu(BTC), and do not have specific recognition

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