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Fluorescent fiber for detecting formaldehyde and preparation method thereof

A fluorescent fiber and formaldehyde technology, applied in fiber processing, fluorescence/phosphorescence, fiber chemical characteristics, etc., can solve the problems of unfavorable detection, low sensitivity, and low promotion, and achieve the effects of improving stability, increasing sensitivity, and reducing costs

Pending Publication Date: 2022-03-25
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common detection methods include spectrophotometry, chromatography, etc. These two methods are relatively complicated to operate and have high requirements for objective factors such as the detection environment and operators. detection
In the prior art, researchers have prepared fluorescent molecular probes for the detection of formaldehyde, using inter-molecular conversion to generate chemical signals, which are then fed back to the outside world; however, direct use of fluorescent probes for detection has high cost and low daily storage stability ; At the same time, there are still problems such as poor reproducibility, low sensitivity, and high detection line

Method used

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  • Fluorescent fiber for detecting formaldehyde and preparation method thereof
  • Fluorescent fiber for detecting formaldehyde and preparation method thereof
  • Fluorescent fiber for detecting formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Step 1: (1) Under nitrogen atmosphere, disperse 3mmol of 4-bromo-1,8-naphthalene dicarboxylic anhydride in 50mL of ethanol solvent, add 3mmol of hydrazine hydrate dropwise, set the temperature at 82°C, and reflux for 6 hours, Cool to room temperature, filter and wash to obtain the crude product; (2) under a nitrogen atmosphere, dissolve 130 mg of the crude product in ethylene glycol monomethyl ether in turn, add 65 mg of hydrazine hydrate and 105 mg of potassium carbonate, set the temperature to 110 ° C, and reflux for 6 Hours; Ethylene glycol monomethyl ether was distilled off under reduced pressure, and methanol / dichloromethane was used for auxiliary chromatography, and ethanol crystallized to obtain the AHB fluorescent compound.

[0074] Step 2: Disperse 3 mg of AHB fluorescent compound evenly in 2 mL of dimethyl sulfoxide to obtain a solution A with a concentration of 1.5 g / L; dissolve polycaprolactone in 4 mL of chloroform to obtain a 25% solution B; Mix solution A...

Embodiment 2

[0077] Step 1: (1) Under nitrogen atmosphere, disperse 3mmol of 4-bromo-1,8-naphthalic anhydride in 50mL of ethanol solvent, add 3mmol of hydrazine hydrate dropwise, set the temperature at 80°C, and reflux for 7 hours, Cool to room temperature, filter and wash to obtain the crude product; (2) under nitrogen atmosphere, dissolve 130 mg of the crude product in ethylene glycol monomethyl ether successively, add 65 mg of hydrazine hydrate and 105 mg of potassium carbonate, set the temperature to 105 ° C, and reflux for 6 Hours; Ethylene glycol monomethyl ether was distilled off under reduced pressure, and methanol / dichloromethane was used for auxiliary chromatography, and ethanol crystallized to obtain the AHB fluorescent compound.

[0078] Step 2: Disperse 2.5 mg of AHB fluorescent compound evenly in 2 mL of dimethyl sulfoxide to obtain a solution A with a concentration of 1.25 g / L; dissolve polycaprolactone in 4 mL of chloroform to obtain a 25% solution B ; Mix solution A and so...

Embodiment 3

[0081] Step 1: (1) Under nitrogen atmosphere, disperse 3mmol of 4-bromo-1,8-naphthalene dicarboxylic anhydride in 50-60mL of ethanol solvent, add dropwise 3mmol of hydrazine hydrate, set the temperature at 85°C, and reflux for 5 hour, cooled to room temperature, filtered and washed to obtain the crude product; (2) under nitrogen atmosphere, 130 mg of the crude product was dissolved in ethylene glycol monomethyl ether successively, 65 mg of hydrazine hydrate and 105 mg of potassium carbonate were added, and the set temperature was 115° C. Reflux for 4 hours; ethylene glycol monomethyl ether was distilled off under reduced pressure, and methanol / dichloromethane was used for auxiliary chromatography, and ethanol crystallized to obtain the AHB fluorescent compound.

[0082] Step 2: Disperse 2mg of AHB fluorescent compound evenly in 2mL of dimethyl sulfoxide to obtain a solution A with a concentration of 1g / L; dissolve polycaprolactone in 4mL of chloroform to obtain a 25% solution B...

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Abstract

The invention discloses a fluorescent fiber for detecting formaldehyde and a preparation method thereof. Comprising the following steps: step 1, uniformly dispersing an AHB fluorescent compound in dimethyl sulfoxide to obtain a solution A; dissolving polycaprolactone in trichloromethane to obtain a solution B; uniformly mixing the solution A and the solution B to obtain an AHB fiber spinning solution; 2, the AHB fiber spinning solution is placed in an injector, the injection voltage, the injection speed and the receiving distance are set, and spinning is conducted; and drying to obtain the fluorescent fiber. The preparation method has the beneficial effects that (1) a novel AHB fluorescent compound is prepared in the scheme and is 2-amino-6-hydrazino-1H-benzisoquinoline-1, 3-(2H)-diketone, and the sensitivity of formaldehyde detection is improved; and (2) the fluorescent fiber is used for directly detecting formaldehyde in indoor air, and is convenient and rapid, strong in operability and high in sensitivity.

Description

technical field [0001] The invention relates to the technical field of formaldehyde detection, in particular to a fluorescent fiber for detecting formaldehyde and a preparation method thereof. Background technique [0002] Formaldehyde is an important industrial raw material and is widely used in chemical and textile industries. For example, it is often used in interior decoration materials or some daily necessities in the form of phenolic resin. The volatilized formaldehyde is a poisonous gas, which can cause irritation to the eyes, nose, throat and other symptoms such as coughing and nausea. Long-term injection may even lead to A series of hazards such as pulmonary edema, carcinogenicity, and gene mutation. [0003] With the improvement of quality of life and environmental awareness, people pay more and more attention to formaldehyde detection, which also promotes the increase of research in this area. At present, common detection methods include spectrophotometry, chrom...

Claims

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Application Information

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IPC IPC(8): G01N21/64D01F6/92D01F1/10D01D5/00
CPCG01N21/6428G01N21/643D01D5/003D01D5/0092D01D5/0061D01F6/92D01F1/10G01N2021/6463
Inventor 曾燕艳梁志辉王玥婷罗群范洪波焦哲鲁莉黄文俊孙煜轲
Owner DONGGUAN UNIV OF TECH
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