Preparation method of pyrene functionalized sensing film and its application in nitryl arene detection

A sensing film and functionalization technology, which is applied in the direction of chemical reaction of materials for analysis, chemiluminescence/bioluminescence, etc., to achieve the effects of improving sensing performance, mild reaction conditions, and easy operation

Inactive Publication Date: 2006-09-27
SHAANXI NORMAL UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there is no report on the research on fluorescent sensing thin film materials that can detect the vapor of nitroaromatic compounds containing trace amounts of nitroaromatic compounds in the air by covalently bonding derivatives of fluorescent small molecules pyrene to the surface of glass substrates through flexible long arms.

Method used

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  • Preparation method of pyrene functionalized sensing film and its application in nitryl arene detection
  • Preparation method of pyrene functionalized sensing film and its application in nitryl arene detection
  • Preparation method of pyrene functionalized sensing film and its application in nitryl arene detection

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Embodiment 1

[0065] To prepare a low density (1000 2 Containing less than 12 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:

[0066] 1. Cutting the substrate

[0067] Cut the glass plate into 0.9×2.5cm 2 The size of the rectangular glass sheet.

[0068] 2. Prepare lotion

[0069] Mix 30% hydrogen peroxide and 98% sulfuric acid in a volume ratio of 7:3 to prepare a lotion.

[0070] 3. Preparation of activated substrate

[0071] Wash the glass slices with water and ethanol first, blow dry and put them in the lotion, heat at 80~100℃ for 1~2 hours, cool naturally, wash the glass slices with pure double distilled water to wash away the remaining lotion on the surface, use Blow dry with a hair dryer to make an activated substrate.

[0072] 4. Preparation of silanized substrate

[0073] Using the capillary action of water, one side of the activated substrate was glued and sealed with a glass sheet, and the activated substra...

Embodiment 2

[0079] In order to prepare the medium density (1000 2 Containing 17-25 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:

[0080] In the process step 5 of preparing the chloroform solution of propylene diaminopyrene sulfonyl derivative in this embodiment, pyrene sulfonyl chloride is dissolved in the chloroform solution to prepare a 0.01 mol / L pyrene sulfonyl chloride solution in chloroform , Pour this solution into a constant pressure funnel, and then take the propylene diamine solution with a molar ratio of 8 to the pyrene sulfonyl chloride and dissolve it in the chloroform solution to prepare a 0.08 mol / L propylene diamine solution in chloroform, And put the solution into a three-necked flask. Under the condition of stirring at 0℃, pass in N at a rate of 0.6~0.8ml / s 2, The chloroform solution of pyrene sulfonyl chloride was added dropwise to the chloroform solution of propylene diamine in the three-necked...

Embodiment 3

[0083] In order to prepare high density (1000 2 Containing 40-50 pyrene sensing molecules) single-sided fluorescent sensing film as an example, the preparation method steps are as follows:

[0084] In the process step 5 of preparing the chloroform solution of propylene diaminopyrene sulfonyl derivative in this embodiment, pyrene sulfonyl chloride is dissolved in the chloroform solution to prepare a 0.01 mol / L pyrene sulfonyl chloride solution in chloroform , Pour this solution into a constant pressure funnel, and then take the propylene diamine solution with a molar ratio of 10 to the pyrene sulfonyl chloride and dissolve it in the chloroform solution to prepare a 0.10 mol / L propylene diamine solution in chloroform, And put the solution into a three-necked flask. Under the condition of stirring at 0℃, pass in N at a rate of 0.6~0.8ml / s 2 , The chloroform solution of pyrene sulfonyl chloride was added dropwise to the chloroform solution of propylene diamine in the three-necked fla...

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Abstract

This invention relates to a preparation method of pyrene functionalized sensing film and its application in nitryl arene detection, which comprises: substrate-lotion-activated substrate-silanizated substrate-trichoromethane solution for four pyrene sulfamoyl derivatives-target. This design is reasonable and practical, and the product has well stability, long lifetime and high sensitivity.

Description

Technical field [0001] The invention belongs to the technical field of using fluorescent small molecules to prepare fluorescent sensing film materials, and specifically relates to a preparation method of a fluorescent sensing film sensitive to the vapors of nitroaromatic hydrocarbon-containing micro-trace explosives and its application in detecting nitroaromatic hydrocarbons. Application in compound vapor. Background technique [0002] As the core of the gas detection system, gas sensors have received more and more attention. Among them, the study of fluorescent sensing films as gas-sensing materials for gas sensors has made breakthroughs in recent years. Fluorescence sensing film uses fluorescence as the output signal. Among sensing materials, it has many incomparable advantages such as high sensitivity, good selectivity, long service life, and easy deviceization. It is based on the principle that the fluorescence intensity of the fluorescent species, the shape of the fluorescen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76
Inventor 房喻张淑娟吕凤婷高莉宁丁立平
Owner SHAANXI NORMAL UNIV
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