A kind of zinc-rare earth metal-organic framework fluorescent sensing material and its synthesis method

A technology of fluorescent sensing and rare earth metals, which is applied in the field of fluorescent sensing materials, can solve the problems of low sensitivity and long response time, and achieve the effect of simple synthesis process, good stability and high yield

Active Publication Date: 2019-08-27
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a zinc-rare earth metal-organic framework fluorescent sensing material and its synthesis method in order to solve the defects and problems of low sensitivity and long response time in the traditional aniline detection method

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  • A kind of zinc-rare earth metal-organic framework fluorescent sensing material and its synthesis method
  • A kind of zinc-rare earth metal-organic framework fluorescent sensing material and its synthesis method
  • A kind of zinc-rare earth metal-organic framework fluorescent sensing material and its synthesis method

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Embodiment 1

[0025] The synthesis method of a zinc-rare earth metal-organic framework fluorescent sensing material in this embodiment is as follows:

[0026] (1) Dissolve 10 mg of organic ligand FDA into 5 mL of N, N-dimethylformamide;

[0027] (2) 5 mg of zinc nitrate and 3 mg of europium chloride were added to 5 mL of N, N-dimethylformamide;

[0028] (3) Mix the two solutions in steps (1) and (2), then put them into a closed hydrothermal reactor, and react at a constant temperature of 60°C for 4 days to obtain a zinc-rare earth metal-organic framework material, with a yield of 68%.

[0029] figure 1 is the structural diagram of the zinc-rare earth metal-organic framework fluorescent sensing material; figure 2 is the X-ray powder diffraction pattern of the zinc-rare earth metal-organic framework fluorescent sensing material in different solvents, and all the diffraction peaks are consistent with the simulated crystal data, showing that the zinc-rare earth metal-organic framework mater...

Embodiment 2

[0031] The synthesis method of a zinc-rare earth metal-organic framework fluorescent sensing material in this embodiment is as follows:

[0032] (1) Dissolve 5 mg of organic ligand FDA into 2.5 mL of N,N-dimethylformamide and 2.5 mL of methanol;

[0033] (2) Add 3mg zinc perchlorate and 2mg europium nitrate into 5mL water respectively;

[0034] (3) Mix the two solutions in steps (1) and (2), then put them into a closed hydrothermal reactor, and react at a constant temperature of 120°C for 2 days to obtain a zinc-rare earth metal-organic framework material, with a yield of 70%.

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Abstract

The invention discloses a zinc-rare earth metal-organic frame fluorescent sensing material and a synthesis method thereof. The general structural formula of the fluorescent sensing material is shown as {[(CH3)2NH2]2[Zn2Eu2(FDA)6(DMF)2].2solvents}<n>, wherein FDA is 2,5-furan dicarboxylic acid radical, DMF is N, N-dimethylformamide, main infrared absorption peaks are 3421cm<-1>, 3108cm<-1>, 1648cm<-1>, 1370cm<-1>, 1091cm<-1>, 959cm<-1> and 785cm<-1>, crystal compounds belong to a monoclinic system, space groups are shown as P2<1> / c, and cell parameters are as follows: a is equal to 18.0405(9) angstrom, b is equal to 12.9922(6) angstrom, c is equal to 14.9125(7) angstrom, alpha is equal to gamma and is equal to 90 degrees, and beta is equal to 113.2970(10) degrees. The zinc-rare earth metal-organic frame fluorescent sensing material can be used for solving the problems of low sensitivity, long response time and the like of a traditional aniline detection method, has the characteristics of high crystallinity, large crystal size and high stability, and has the advantages of simple synthetic process and high yield.

Description

technical field [0001] The invention relates to a zinc-rare earth metal-organic framework fluorescent sensing material and a synthesis method thereof, belonging to the technical field of fluorescent sensing materials. Background technique [0002] As one of the most important fine chemicals, aniline is widely used in organic synthesis, dye intermediates, medicines, resins and rubber vulcanization accelerators. However, aniline is also one of the main sources of environmental pollution. Long-term low-concentration exposure can cause toxic liver disease, methemoglobinemia, hemolytic anemia, and liver and kidney damage, which seriously threaten human health. Traditional aniline detection methods have defects such as low sensitivity and long response time. Therefore, how to efficiently and accurately detect aniline is one of the problems that need to be solved urgently. [0003] Fluorescent sensing materials based on metal-organic frameworks are considered to be one of the mos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C08G83/00G01N21/64
Inventor 李玲邹吉勇柳跃伟曾国平游胜勇谌开红陈衍华
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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