A kind of rare earth terbium (iii)-organic framework coordination polymer and its preparation method and application as luminescent material

Abstract

A rare earth terbium(III)-organic framework coordination polymer and its preparation method and application as a luminescent material, relating to the technical field of rare earth metal complexes, the above-mentioned rare earth terbium(III)-organic framework coordination polymer has extremely strong fluorescence intensity And the monochromaticity is good. Under the three-purpose ultraviolet lamp, when the excitation wavelength is 254nm, it can emit strong green fluorescence and show excellent selectivity in the detection of iron ions. When Fe 3+ The concentration is 0.00~1.25mmol.L ‑1 When within the range, the ratio of the fluorescence intensity of the above-mentioned rare earth terbium (III)-organic framework coordination polymer in aqueous solution to its fluorescence intensity in iron ion solution and Fe 3+ The concentration shows a strong linear relationship, so the rare earth terbium(III)-organic framework coordination polymer can be used as a fluorescent probe to recognize Fe 3+ , high detection accuracy.

Description

technical field [0001] The invention relates to the technical field of rare earth metal complexes, in particular to a rare earth terbium (III)-organic framework coordination polymer, a preparation method thereof and an application as a luminescent material. Background technique [0002] Rare earth ions have a special 4f electron layer structure, and their complexes have unique properties of photoluminescence, and have the advantages of high luminous color purity, narrow emission half-maximum width, and long fluorescence lifetime. Today, the photoluminescence of rare earth complexes can be seen in the fields of laser materials, optical fiber communication and fluorescent probes. In order to enhance the fluorescence intensity of the complex, it is necessary to select a suitable sensitizer. Generally, an organic ligand is used as a sensitizer, which can effectively transfer energy and make the rare earth ion reach an emission state. The organic ligand commonly used There are β...

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Problems solved by technology

However, the above-mentioned literature does not disclose the test results of the selective recognition of iron ions by the tetranuclear rare earth terbium complex, and there is still room for improvement in its fluorescence intensity.

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