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A Cuprous Complex Fluorescent Sensing Material Selectively Responsive to 4-Pyridine Vapor

A technology for fluorescence sensing and complexes, applied in luminescent materials, compounds of Group 5/15 elements of the periodic table, fluorescence/phosphorescence, etc. The effect of good solubility and thermal stability, low production cost and simple equipment

Active Publication Date: 2021-03-19
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as mentioned in the article, current researchers in this field usually only study the molecular mechanism of this phenomenon, while ignoring the application requirements such as quantitative and low cost of actual sensing and detection.
In particular, it needs to be pointed out that the platinum and gold used in the reported complexes are expensive, and to meet the low-cost requirements of the application, it is necessary to start with ordinary metals

Method used

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  • A Cuprous Complex Fluorescent Sensing Material Selectively Responsive to 4-Pyridine Vapor
  • A Cuprous Complex Fluorescent Sensing Material Selectively Responsive to 4-Pyridine Vapor
  • A Cuprous Complex Fluorescent Sensing Material Selectively Responsive to 4-Pyridine Vapor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A large number of complex materials [Cu(O-Anisyl 3 P)(2,2'-bipy)](PF 6 ) Crystal sample preparation: Weigh 0.037g (0.1mmol) of Cu(CH 3 EN) 4 PF 6 , 0.035 g (0.1 mmol) of O-Anisyl 3 P, 0.016g (0.1mmol) of 2,2'-bipy; respectively dissolved in 5mL of dichloromethane and mixed sequentially, stirred well to make the coordination reaction fully occur, and obtained a reddish-brown clear solution; after filtration, the above solution was Rotary evaporation under reduced pressure at room temperature removed all solvents, and dried to obtain a light-colored crystalline powder product with a yield of 78% (calculated as Cu). After the complex was placed in the atmosphere of 4-picoline to respond, a very bright blue-green emission could be observed.

Embodiment 2

[0036] Synthetic complex materials [Cu(O-Anisyl 3 P)(2,2'-bipy)](PF 6 ) single crystal: Weigh 0.037g (0.1mmol) of Cu(CH 3 EN) 4 PF 6 , 0.035 g (0.1 mmol) of O-Anisyl 3 P, 0.016g (0.1mmol) of 2,2'-bipy; respectively dissolved in 5mL of dichloromethane and mixed successively, stirred well to make the coordination reaction fully occur, and obtained a reddish-brown clear solution; after filtration, the upper layer of the solution Covering with n-hexane promotes crystallization of the product, and after standing for a few days, a large number of green blocky crystals precipitate out. Select a near-colorless block crystal with a size of 0.40mm*0.38mm*0.32mm for X-ray single crystal structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit cell packing structure is shown in the attached figure 2 .

Embodiment 3

[0038] Preparation of fluorescent sensing film and its atmosphere response: Weigh 0.1 g of PMMA (polymethyl methacrylate, glass transition temperature: 105°C) to completely dissolve it in 2 mL of dichloromethane, and the solution is colorless, clear and transparent. Weigh 0.043g complex [Cu(O-Anisyl 3 P)(2,2'-bipy)]PF 6 , so that it was completely dissolved in 1 mL of dichloromethane, and the solution was reddish brown and clear. The complex solution was slowly introduced into the PMMA solution, and the solution was light orange-red and clear. Spin-coat (1200rad / min) on a cleaned quartz wafer, dry (60°C, 30min), and then put it into VOC to respond and test the fluorescence spectrum. It was found that a very bright blue-green emission (λem = 490 nm ) could be observed after responding in an atmosphere of 4-picoline. Besides, in other VOC atmospheres, it still does not emit light. The existence of various other VOC vapors has no obvious influence on the fluorescence sensing ...

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Abstract

The invention discloses a cuprous complex material, a preparation method thereof and a VOC fluorescence sensing application. A VOC fluorescence sensing complex is obtained by complexing a monovalent copper salt with a ligand, the molecular structure of the complex is [Cu (O-Anisyl3P) (2,2'-bipy)] (PF6), wherein O-Anisyl3P is an electrically neutral phosphine ligand III (2-methoxyphenyl) phosphine,2,2'-bipy is a heterocyclic ligand 2,2'-bipyridyl. The complex has the advantage of easy purification of small molecules, and has high thermal stability. The material is obtained by directly mixing and reacting Cu (CH3CN) 4PF6 and a dichloromethane solution of the ligand, and has the advantages of simple process, simple equipment, easily obtained raw materials, low cost and the like. The materialand a polymer doped film thereof can be used as a VOC fluorescent lighting sensing material, and has excellent selective fluorescence response on 4-methylpyridine.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, to the field of photoluminescent materials, in particular to the field of fluorescent sensing materials. Background technique [0002] With the rapid development of world industry, especially the large-scale utilization of petrochemical resources, the problem of air pollution has also arisen; and the rise of the real estate industry and its supporting industries, the extensive use of various organic / polymer building and decoration materials has also brought problem of indoor air pollution. At present, these issues have been widely concerned at home and abroad. With the popularization of knowledge by various media, the concept of environmental protection has also penetrated into thousands of households. Volatile Organic Compounds (Volatile Organic Compounds, VOCs) are the main factors of indoor air pollution, including benzene series, organic chlorides, and Freon series. The indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/6596C09K11/06G01N21/64
Inventor 朱秋梦柴文祥宋莉王丹丹郭驾宇沈杭燕范美强
Owner CHINA JILIANG UNIV
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