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An infrared luminescent material with a rare earth metal organic framework structure

A metal-organic framework and infrared light-emitting technology, applied in the field of metal-organic framework materials and rare-earth metal-organic framework light-emitting materials, can solve problems such as constraints, material types and performance to be improved, and achieve low production cost, cheap purification, and good thermal stability. sexual effect

Inactive Publication Date: 2018-02-27
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this type of material has shown good application prospects in the fields of fluorescent probes, sensing detection, etc., but the types and properties of materials still need to be improved, which is still a key issue restricting their application in important fields such as fluorescent sensing.

Method used

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  • An infrared luminescent material with a rare earth metal organic framework structure
  • An infrared luminescent material with a rare earth metal organic framework structure
  • An infrared luminescent material with a rare earth metal organic framework structure

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A large number of rare-earth metal-organic framework infrared luminescent materials [Nd(SnL 3 ) 2 (H 2 O) 3 ] n n[(H 2 O) 4 (H 3 O)] preparation of the crystal sample: the sodium salt of tin thioglycolate weighing 10mmol is dissolved in 40 milliliters of water to obtain clear solution A, and the neodymium nitrate weighed 5 mmol is dissolved in 20 milliliters of water to obtain clear solution B; then, the above Add solution B to solution A, continue to stir and react for half an hour after the addition is complete, and evaporate the filtrate under reduced pressure after filtration to precipitate a large number of light purple crystals, filter after about 5 ml of the filtrate remains, and then quickly wash twice with ethanol, After vacuum drying, a large number of light purple crystals are finally obtained, which is the target product of the hybrid material, and the yield exceeds 70%.

Embodiment 2

[0031] Synthesis of rare-earth metal-organic framework infrared luminescent materials [Nd(SnL 3 ) 2 (H 2 O) 3 ] n n[(H 2 O) 4 (H 3 O)] single crystal: the sodium salt of the tin thioglycolate weighing 0.2mmol is dissolved in 5 milliliters of water to obtain a clear solution A, and the neodymium nitrate of weighed 0.1 mmol is dissolved in 3 milliliters of water to obtain a clear solution B; then, the The above-mentioned solution B was added to the solution A. After the addition was completed, the stirring reaction was continued for half an hour. After filtration, the filtrate was left to evaporate at room temperature. After a few days, a large number of light purple plate-like crystals were precipitated. Select a light purple plate with a size of 0.32mm*0.18mm*0.15mm for X-ray single crystal structure test. The structure diagram of the crystallographic independent unit of this compound is shown in the attached figure 1 , the structure diagram of its tin thioglycolate an...

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Abstract

The invention discloses an infrared luminescent material for the rare-earth metal-organic framework, and a preparation method of the infrared luminescent material. The molecular structure formula of the infrared luminescent material is [Nd (SnL3)2 (H2O)3] n.n [(H2O)4 (H3O)], where L is ethyl mercaptan acid radical anions with two negative charges, and n is the number of units of high polymer structure. In the structure formula, [Nd (SnL3)2 (H2O)3] n is the metal-organic framework part, n [(H2O)4 (H3O)] is the filler in the framework, and ethyl mercaptan acid radical anions and rare-earth neodymium ions make up of the metal-organic framework of large-hole structure by polymerizing. The infrared luminescent material for the rare-earth metal-organic framework is conveniently prepared at low cost with the hole structure, good luminescence performance and thermal stability through coordinative polymerization of ethyl mercaptan acid radical anions (SnL3-2) and rare-earth ions. The hole structure has large hollow cavities and thermally stable, and can be applied to the technical field of fluorescent sensing detection of various micromolecules.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, to the field of rare earth metal organic framework materials, in particular to the field of rare earth metal organic framework luminescent materials. Background technique [0002] Metal-Organic Frameworks (MOFs for short) is the fastest-growing direction of coordination chemistry in the past ten years, and it is a hot research field involving interdisciplinary fields such as inorganic chemistry, organic chemistry and coordination chemistry. Judging from the number of related papers published in various major international journals, the field of MOFs research is worthy of being one of the hot spots in current materials research, with broad research and application prospects. On the other hand, since the structure, coordination mode, and channel size of coordination compounds need to be characterized in the research of MOFs, it is required to obtain crystals suitable for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C08G83/00
CPCC08G83/008C09K11/06C09K2211/183C09K2211/188
Inventor 柴文祥朱秋梦宋莉沈杭燕郭冰秦来顺陈海潮舒康颖
Owner CHINA JILIANG UNIV