Application of organic light-emitting free radical material in gas-phase fluorescence detection of nerve poison, fluorescent film and application of fluorescent film

A nerve agent and fluorescence detection technology, applied in the field of fluorescence sensing, can solve the problems of poor photostability of fluorescent probes, and achieve the effects of visual detection, excellent photostability, and high fluorescence quenching rate

Pending Publication Date: 2022-05-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, researchers have reported some fluorescent probes for DCP detection, but some fluorescent probes have poor photostability (Anal. Chem. 2018, 90, 7131-7134; Anal. Chem. 2019, 91, 1711 -1714), and mostly used for DCP liquid phase detection (NewJ.Chem.,2017,41,1653; J.Hazard.Mater.,2018,342,10-19), rarely involving DCP gas phase detection

Method used

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  • Application of organic light-emitting free radical material in gas-phase fluorescence detection of nerve poison, fluorescent film and application of fluorescent film
  • Application of organic light-emitting free radical material in gas-phase fluorescence detection of nerve poison, fluorescent film and application of fluorescent film
  • Application of organic light-emitting free radical material in gas-phase fluorescence detection of nerve poison, fluorescent film and application of fluorescent film

Examples

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preparation example Construction

[0054] The present invention provides the preparation method of the fluorescent film described in the above technical solution, comprising the following steps:

[0055] The host material, the guest material and the organic solvent are mixed to form a film to obtain a fluorescent film.

[0056] In the present invention, the parent material, the guest material and the organic solvent are mixed to obtain a mixed material. The present invention does not specifically limit the manner in which the parent material, the guest material and the organic solvent are mixed, and a method well known to those skilled in the art can be used to achieve sufficient mixing of the materials.

[0057] After the mixed material is obtained, the present invention forms the mixed material into a film to obtain a fluorescent film. In the present invention, the method for forming the film preferably includes:

[0058] The mixed material is coated on one side of a substrate, and after drying, a fluoresce...

Embodiment 1

[0063] To prepare a fluorescent film based on an organic light-emitting radical material R1 (with a structure represented by formula R1), the steps are as follows:

[0064] Dissolve 1 mg of organic light-emitting radical material R1 and 19 mg of polymethyl methacrylate in 1 mL of o-dichlorobenzene to obtain a mixed material solution; ultrasonically clean the quartz glass with water, ethanol, acetone and toluene for 30 min in turn to remove the quartz glass Impurities on the surface; 60 μL of the mixture was added dropwise to the cleaned quartz glass surface, and a film was formed by spin coating using a glue homogenizer. Vacuum-drying at 45°C for 60 min to obtain a fluorescent film based on the organic light-emitting radical material R1, denoted as R1 fluorescent film.

Embodiment 2

[0066] According to the method of Example 1, the only difference is that the organic light-emitting radical material R1 is replaced with an organic light-emitting radical material R2 (with the structure shown by formula R2), and finally a fluorescent film based on the organic light-emitting radical material R2 is prepared. , denoted as R2 fluorescent film.

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Abstract

The invention provides application of an organic light-emitting free radical material in gas-phase fluorescence detection of a nerve poison, a fluorescent film and application of the fluorescent film, and belongs to the technical field of fluorescence sensing. The organic light-emitting free radical material with the structure as shown in the formula I belongs to a triphenylmethyl free radical or benzhydryl free radical series, has relatively high fluorescence quantum yield and excellent light stability, is very suitable for being used as a fluorescence probe, can be used for gas-phase fluorescence detection of a nerve poison, and has a wide application prospect. Particularly, the fluorescent film based on the organic light-emitting free radical material with the structure shown in the formula I can realize real-time, efficient and visual DCP gas phase detection, and the detection limit is lower than the IDLH value of sarin.

Description

technical field [0001] The invention relates to the technical field of fluorescence sensing, in particular to the application of organic light-emitting free radical materials in gas-phase fluorescence detection of nerve agents, a fluorescent film and the application thereof. Background technique [0002] Sarin is a highly toxic organic phosphonate, a kind of nerve agent, scientific name is isopropyl methyl fluorophosphonate. At room temperature, sarin is a colorless liquid, and pure sarin has almost no odor. Sarin enters the human body mainly through the respiratory system, which can cause the increase of acetylcholine in the human body. The main symptoms of sarin poisoning include difficulty breathing, drooling and profuse sweating, nausea, and vomiting. Sarin is extremely toxic, with an Immediately Dangerous to Life and Health (IDLH) value of 7ppb, and can be fatal within minutes when inhaled in sufficient doses. Therefore, it is necessary to develop a rapid and efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64C09K11/02C09K11/06C08J5/18C08L33/12C08K5/3432
CPCG01N21/643C09K11/025C09K11/06C08J5/18C09K2211/1044C09K2211/1007C08J2333/12C08K5/3432
Inventor 张明李峰张依梦
Owner JILIN UNIV
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