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Preparation method and application of pyrene-containing conjugated polymer fluorescent sensing film

A conjugated polymer, fluorescence sensing technology, used in fluorescence/phosphorescence, chemical instruments and methods, luminescent materials, etc., to achieve the effects of good stability, long service life and high sensitivity

Active Publication Date: 2011-04-27
深圳砺剑防卫技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on fluorescent sensing films containing pyrene-conjugated polymers that are sensitive to nitroaromatic explosives.

Method used

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  • Preparation method and application of pyrene-containing conjugated polymer fluorescent sensing film
  • Preparation method and application of pyrene-containing conjugated polymer fluorescent sensing film
  • Preparation method and application of pyrene-containing conjugated polymer fluorescent sensing film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Tailoring the substrate

[0036] Cut the glass plate into 0.9×2.5cm 2 rectangular glass substrate.

[0037] 2. Prepare lotion

[0038] Mix 30% hydrogen peroxide with a mass fraction of 98% sulfuric acid at a volume ratio of 3:7 to prepare 30 mL of washing solution.

[0039] 3. Preparation of activated substrate

[0040] Wash the glass substrate with distilled water and ethanol, dry it and immerse it in the 30mL lotion prepared in step 2, heat the lotion to 80-100°C, activate it for 1-2 hours, cool it down to room temperature naturally, and wash the glass substrate with twice distilled water Slice, wash off the residual lotion on the surface, and dry it with a hair dryer to make an activated substrate.

[0041] 4. Preparation of pyrene-containing conjugated polymers

[0042] Under the condition of argon gas with a flow rate of 0.6-0.8mL / s, 25mg of 1,6-bis(ethynyl)-pyrene, 1,4 -Bis(ethynyl)-2,5-bis(hexadecyloxy)-benzene 61mg, 1,4-diiodo-2,5-bis(hexadecyloxy)-benzen...

Embodiment 2

[0051] In step 4 of the preparation of pyrene-containing conjugated polymers in this example, under the condition of argon gas with a flow rate of 0.6-0.8mL / s, add 1,6-bis(ethynyl)-pyrene 25mg, 1,4-bis(ethynyl)-2,5-bis(hexadecyloxy)-benzene 61mg, 1,4-diiodo-2,5- Bis(hexadecyloxy)-benzene 163mg, tetraphenylphosphopalladium 11.6mg, cuprous iodide 1.9mg, 1,4-diiodo-2,5-bis(hexadecyloxy)-benzene and toluene , The mass ratio of diisopropylamine is 1: 60: 22, and other steps of this step are the same as in Example 1 to prepare a pyrene-containing conjugated polymer. The other steps were the same as in Example 1, and a pyrene-conjugated polymer fluorescent sensing film was prepared.

Embodiment 3

[0053] In step 4 of the preparation of pyrene-containing conjugated polymers in this example, under the condition of argon gas with a flow rate of 0.6-0.8mL / s, add 1,6-bis(ethynyl)-pyrene 25mg, 1,4-bis(ethynyl)-2,5-bis(hexadecyloxy)-benzene 61mg, 1,4-diiodo-2,5- Bis(hexadecyloxy)-benzene 163mg, tetraphenylphosphopalladium 11.6mg, cuprous iodide 1.9mg, 1,4-diiodo-2,5-bis(hexadecyloxy)-benzene and toluene , The mass ratio of diisopropylamine is 1: 160: 60, and the other steps of this step are the same as in Example 1 to prepare a pyrene-containing conjugated polymer. The other steps were the same as in Example 1, and a pyrene-conjugated polymer fluorescent sensing film was prepared.

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Abstract

The invention discloses a preparation method of a pyrene-containing conjugated polymer fluorescent sensing film, comprising the steps of tailoring a substrate, preparing lotion, preparing an activated substrate, preparing a pyrene-containing conjugated polymer, preparing a stock solution of the pyrene-containing conjugated polymer, and preparing the pyrene-containing conjugated polymer fluorescent sensing film. The fluorescent sensing film can be prepared by introducing a pyrene group into a conjugated fluorescent polymer main chain and coating the synthesized pyrene-containing conjugated polymer on the surface of the substrate; and the invention realizes the sensitive detection on solutions of nitryl aromatic explosives. The preparation method is simple and convenient for operation and has mild reaction condition. The prepared fluorescent sensing film has the advantages of favorable stability, long service life and high sensitivity, can be used for a sensor for detecting nitryl-containing aromatic compounds, or can be arranged on a detection instrument for detecting the nitryl-containing aromatic compounds by using the fluorescent principle. In addition, the fluorescent sensing films are subjected to nitryl aromatic chemical combination and are directly detected by using a fluorescent instrument.

Description

technical field [0001] The invention belongs to the technical field of conjugated fluorescent polymer fluorescent sensing film materials, and in particular relates to a preparation method of a pyrene-containing conjugated polymer fluorescent sensing film sensitive to nitroaromatics. Background technique [0002] Since the widespread use of nitroaromatic explosives such as 2,4,6-trinitrotoluene (TNT) and 2,4-dinitrotoluene (2,4-DNT) has caused great harm in recent years, therefore, More and more attention has been paid to its highly sensitive and selective detection. The reported detection methods for nitroaromatics include chromatography, amperometry, surface resonance Raman method, X-ray method, cyclic voltammetry, etc. These methods often have many shortcomings, such as the pretreatment of samples is very troublesome , Other samples have great interference to the detection, the instrument is very complicated, etc. Compared with other methods, the fluorescence method has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/32C08L65/00C08G61/02C08J5/18C09K11/06G01N21/64
Inventor 房喻何刚崔红王红月曹源丁立平
Owner 深圳砺剑防卫技术有限公司
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