Polyacid-imidazole member containing cadmium-based fluorescent probe compound, preparation method therefor and application of polyacid-imidazole member containing cadmium-based fluorescent probe compound

Abstract

The invention discloses a polyacid-imidazole member containing cadmium-based fluorescent probe compound, a preparation method therefor and an application of the polyacid-imidazole member containing cadmium-based fluorescent probe compound and belongs to the fields of synthesis and application fluorescent materials. The probe compound has a chemical formula of Cd2(C16H6O8)(C10H14N4)0.5(H2O)3.H2O and a molecular formula of C21H21Cd2N2O12, wherein C16H6O8 is deprotonated 2,3,3',5'-biphenyl tetraformic acid, and C10H14N4 is 1,4-diimidazolyl butane. The probe compound is prepared from an inorganiccadmium salt, the deprotonated 2,3,3',5'-biphenyl tetraformic acid and the 1,4-diimidazolyl butane, which serve as reactants, by a hydrothermal method, is a brand-new product and is simple in materialsynthesis process, high in yield and purity and good in stability; the production equipment is simple, and the raw materials are cheap and readily available; and the material has high detection and recognition capability to metal ions and organic solvents and can be extensively applied to detection, recognition, imaging and the like of specific ingredients in living bodies and water environments.

Description

technical field [0001] The invention relates to the technical field of synthesis and application of fluorescent materials, in particular to a cadmium-based fluorescent probe compound containing a polyacid-imidazole type component and its preparation method and application. Background technique [0002] An important application of metal-organic frameworks (MOFs) in the optical field is the fluorescence of metal-organic frameworks. The mechanism of fluorescence of metal-organic frameworks is mainly to release the excitation energy of absorbed radiation. Photons from the singlet state (S 1 ) to ground state (S 0 ) to produce fluorescence, which results in different colors of fluorescence depending on the energy difference between the singlet state and the ground state. [0003] At present, in terms of water treatment, water pollution has seriously affected the safety of drinking water and the self-cleaning cycle of the ecological circle. How to effectively deal with water pol...

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Problems solved by technology

The compound belongs to the monoclinic crystal system, the space group is P21 / c, has high water stability, and can selectively identify Cu2+ ions in aqueous solutions of various common different cations through its degree of fluorescence quenching. The limit can reach 6.63×10-7M, which can be used as a fluorescent probe material in the field of analysis and detection of metal ions in water, and can be reused, with broad application prospects, but this fluorescent probe material cannot selectively recognize Fe 3+ ions, and the use of DMA organic solvents in the preparation method pollutes the environment

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