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Fluorescent sensing material and fluorescent sensing film array thereof, preparation method and application

A fluorescent sensing and thin-film technology, which is applied in the direction of luminescent materials, fluorescence/phosphorescence, and material analysis through optical means, can solve the problems that the sensing materials cannot meet the requirements, the sensitivity cannot meet the requirements, and the classification and identification cannot be realized. High practicability, sensitive detection, and reduced hardware requirements

Active Publication Date: 2019-02-01
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many disadvantages in the existing fluorescent sensors, such as fewer types of detection, inability to realize classification and identification, and sensitivity that cannot meet the requirements. Fluorescent materials for sensor arrays are extremely important
[0003] There are many reported fluorescent sensors that can be used for explosive detection, and the research is relatively mature, but most of them are still focused on nitroaromatic explosives such as TNT (trinitrotoluene), which is of greater significance for low vapor pressure. There are few studies on RDX, TATP, CL-20, and soil explosives

Method used

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  • Fluorescent sensing material and fluorescent sensing film array thereof, preparation method and application
  • Fluorescent sensing material and fluorescent sensing film array thereof, preparation method and application
  • Fluorescent sensing material and fluorescent sensing film array thereof, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1) Synthesis of fluorescent sensor molecules 1

[0049] Take 0.122g of decaborane in a 100mL two-necked flask, add 30mL of anhydrous toluene under a nitrogen atmosphere, then add 0.1mL of N,N-dimethylaniline, stir at room temperature for 30 minutes, then raise the temperature to 100°C, stir for 30 minutes, and cool To room temperature, add 0.228g of naphthynylbenzene (fluorescent sensing compound 1), then raise the temperature to 110°C, stir for 10 hours, cool to room temperature, filter, collect the filtrate, wash with dichloromethane: n-hexane (1:2) The solid obtained by dehydration and separation by column chromatography is the fluorescent sensor molecule 1, and its reaction equation is as follows:

[0050]

[0051] 2) Synthesis of Compound 2

[0052] Take by weighing 2.07g p-bromonaphthalene, 0.58g Pd(PPh 3 ) 4 , 0.095g CuI and 1.17g p-ethynylaniline were placed in a 100mL two-necked bottle. Under nitrogen protection, 10 mL of triethylamine and 40 mL of tetra...

Embodiment 2

[0061] 1) Synthesis of fluorescent sensor molecules 1

[0062] Take 0.122g of decaborane in a 100mL two-necked flask, add 30mL of anhydrous toluene under a nitrogen atmosphere, then add 0.1mL of N,N-dimethylaniline, stir at room temperature for 30 minutes, then raise the temperature to 100°C, stir for 30 minutes, and cool To room temperature, add 0.302g pyrynylbenzene (fluorescent sensing compound 1), then raise the temperature to 110°C, stir for 10 hours, cool to room temperature, filter, collect the filtrate, wash with dichloromethane: n-hexane (1:2) The solid obtained by dehydration and separation by column chromatography is the fluorescent sensor molecule 1, and its reaction equation is as follows:

[0063]

[0064] 2) Synthesis of Compound 2

[0065] Weigh 2.81g p-bromopyrene, 0.58g Pd(PPh 3 ) 4 , 0.095g CuI and 1.17g p-ethynylaniline were placed in a 100mL two-necked bottle. Under nitrogen protection, 10 mL of triethylamine and 40 mL of tetrahydrofuran were sequen...

Embodiment 3

[0073] Embodiment 3 Preparation of Fluorescence Sensing Thin Film Array

[0074] Prepare the concentration of 1 × 10 -5 ~1×10 -4 mol / L fluorescent sensing molecule 1, fluorescent sensing molecule 2, and fluorescent sensing molecule 3, the solvent is toluene, the stock solution is left to stand, sealed and stored for later use.

[0075] Among them, the structures of three fluorescent sensing molecules are as follows:

[0076] Fluorescent sensor molecule 1:

[0077]

[0078] Fluorescent sensor molecule two:

[0079]

[0080] Fluorescence sensing molecule three:

[0081]

[0082] Spin-coat the above three stock solutions evenly on the surface of clean filter paper respectively, and the coating volume is 0.05-0.2uL / cm 2 , placed at room temperature for 1 hour, sealed and stored, and prepared into a fluorescent sensing film array consisting of three sets of sensing films.

[0083] In addition to the filter paper substrate, the three groups of stock solutions can also...

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Abstract

Belonging to the technical field of small molecule fluorescent sensing film materials, the invention discloses a fluorescent sensing material and a fluorescent sensing film array thereof, a preparation method and application. Fluorescent materials with different properties are transferred to a matrix surface to obtain a sensing array composed of a variety of fluorescent films. The sensing array can achieve sensitive sensing of 15 explosives, drugs and volatile organic gases. The method provided by the invention is simple in operation and has mild reaction conditions, and the prepared fluorescent sensing films have good stability and long service life, and can compose an excellent sensing film array for controlled chemical gases. Combined use of the films with a commercial fluorescent instrument can realize sensitive detection of controlled chemical gases. In addition, the sensing films can be instrumented and developed into detectors special for explosives, drugs and volatile organic gases.

Description

technical field [0001] The invention belongs to the technical field of fluorescent sensing thin film materials, and relates to a fluorescent sensing material, a fluorescent sensing thin film array, a preparation method and an application thereof. Background technique [0002] The illegal production, sale and use of high-energy hazardous explosives, strictly controlled liquid chemicals, addictive drugs and other chemicals under national key control seriously threaten public safety, social stability and family harmony. Therefore, it is of great significance to develop a technology capable of real-time, online, and sensitive detection of high-energy hazardous explosives, strictly controlled liquid chemicals, addictive drugs and other national key control chemicals. So far, the technical means that can be used for the detection of such dangerous chemicals worldwide are mainly gas-mass spectrometry, ion mobility spectrometry, surface-enhanced Raman, and professional poison (explo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07F5/05G01N21/64
CPCC07F5/05C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1096G01N21/643G01N2021/6439
Inventor 房喻刘科刘太宏
Owner SHAANXI NORMAL UNIV
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