Fluorescent polymer for detecting trace gas-phase explosives, and preparation and application of film

A technology of polymers and explosives, applied in the field of fluorescent polymers, can solve the problems that cannot further meet the requirements of fast, sensitive, and high selectivity of fluorescent sensors, and achieve the enhancement of monomer fluorescence intensity, suppression of fluorescence quenching, and enhanced Effect of Electron Cloud Density

Active Publication Date: 2021-08-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In recent years, fluorescent sensors based on conjugated polymers have attracted widespread attention due to the advantages of convenient, fast and sensitive testing process, and no need for pre-treatment of samples. Fluorescent polymers used in fluorescent sensors cannot further meet the requirements of fluorescent sensors for fast, sensitive, and high selectivity. Therefore, it is urgent to develop a new fluorescent polymer, which can be more efficient and sensitive when applied to fluorescent sensors. Detect dangerous goods

Method used

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  • Fluorescent polymer for detecting trace gas-phase explosives, and preparation and application of film
  • Fluorescent polymer for detecting trace gas-phase explosives, and preparation and application of film
  • Fluorescent polymer for detecting trace gas-phase explosives, and preparation and application of film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] This embodiment provides an intermediate 1-10, the synthesis route of which is as follows:

[0075]

[0076] The preparation method of monomer 1-10 specifically comprises the following steps:

[0077] 1) Synthesis of compound 1-1

[0078] Put 3-iodophenol (2.00g, 9.10mmol), 2-bromoethylmethyl ether (2.53g, 18.20mmol) and potassium carbonate (5.02g, 36.40mmol) into a Schlenk reaction flask, add acetonitrile (30mL) , heated to 80°C and stirred for 16 hours; after the reaction, the reaction mixture was filtered under vacuum using a Buchner funnel, and the filtrate was concentrated in a rotary evaporator to obtain a crude product, which was separated and purified by silica gel column chromatography, and the eluent used was It was a mixed solvent of dichloromethane and petroleum ether at a volume ratio of 1:1, and compound 1-1 (2.50 g, 99%) was finally obtained as a colorless oil. The H NMR spectrum of compound 1-1 is as follows figure 1 shown.

[0079] 2) Synthesis ...

Embodiment 2

[0098] This embodiment provides a fluorescent polymer (polymer 1) for detecting trace gas-phase explosives, and the synthesis route of polymer 1 is as follows:

[0099]

[0100] The preparation method of polymer 1 specifically comprises the following steps:

[0101] Under nitrogen atmosphere, compound 1-10 (0.043g, 0.042mmol), 1,4-diethynylbenzene P2 (0.005g, 0.042mmol), catalyst Pd(PPh 3 ) 4 (0.005g, 0.042mmol) and cuprous iodide CuI (0.002g, 0.010mmol) were placed in a Schlenk reaction flask, nitrogen was pumped out three times with a double row tube, and ultra-dry toluene (8mL) treated with potassium-sodium alloy was added and isopropylamine (i-Pr 2 NH) (2 mL), heated to 110 ° C and stirred for 36 h. After the reaction, the reaction mixture cooled to room temperature was poured into deionized water, extracted five times with dichloromethane, and the organic layers were combined and dried with anhydrous sodium sulfate. Use a rotary evaporator to concentrate the organic...

Embodiment 3

[0103] This embodiment provides a fluorescent polymer (polymer 2) for detecting trace gas-phase explosives, and the synthesis route of polymer 2 is as follows:

[0104]

[0105] The preparation method of polymer 2 specifically comprises the following steps:

[0106] Under nitrogen atmosphere, compound 1-10 (0.043g, 0.042mmol), P4 (0.011g, 0.042mmol), catalyst Pd (PPh 3 ) 4 (0.005g, 0.043mmol) and cuprous iodide CuI (0.002g, 0.010mmol) were placed in a Schlenk reaction flask, nitrogen was pumped out three times with a double row tube, and ultra-dry toluene (8mL) treated with potassium-sodium alloy was added and isopropylamine (i-Pr 2 NH) (2 mL), heated to 110 ° C and stirred for 36 h. After the reaction, the reaction mixture cooled to room temperature was poured into deionized water, extracted five times with dichloromethane, and the organic layers were combined and dried with anhydrous sodium sulfate. Use a rotary evaporator to concentrate the organic layer under vacuum ...

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Abstract

The invention relates to the technical field of fluorescent sensing materials, in particular to a fluorescent polymer for detecting trace gas-phase explosives, and preparation and application of a film. The fluorescent polymer provided by the invention has repetitive structure units as shown in formulas 1-10 which are described in the specification. When the fluorescent polymer is used for preparing a fluorescent sensing film, the fluorescent sensing film is sensitive and rapid in signal response and high in selectivity, and can be widely applied to fluorescence detection of gaseous trace nitro explosives, peroxide explosives, biomolecules, heavy metals and drugs.

Description

technical field [0001] The invention relates to the technical field of fluorescent sensing materials, in particular to a fluorescent polymer for detecting trace gas phase explosives, including the preparation and application of thin films. Background technique [0002] In recent years, with the continuous improvement of the industrial level, the use of chemicals has become more and more common. While chemicals have greatly improved living standards and convenience, they also pose threats to the ecological environment, public safety, and public health due to their dangers. , therefore, in industrial control, environmental monitoring, public safety and other related fields, the rapid and trace monitoring of chemicals, especially hazardous chemicals, has become an urgent need. [0003] Hazardous chemicals refer to highly toxic chemicals and other chemicals that are toxic, corrosive, explosive, flammable, and combustion-supporting, and are harmful to human bodies, facilities, an...

Claims

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Application Information

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IPC IPC(8): C08G61/02C08G61/10C08L65/00C08J5/18C09K11/06G01N21/64
CPCC08G61/02C08G61/10C08J5/18C09K11/06G01N21/643C09K2211/1416C08J2365/00C08G2261/124C08G2261/1424C08G2261/312C08G2261/314C08G2261/3142C08G2261/3328C08G2261/352C08G2261/411C08G2261/413C08G2261/522
Inventor 陈海波李鹏李灵峰
Owner SUZHOU UNIV
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