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Preparation and application of a kind of chlorine-containing phenolic resin nanomaterial

A technology of phenolic resin and nano-particles, which is applied in the analysis of materials, material excitation analysis, and material analysis through optical means, etc., can solve the problems affecting the sensitivity of fluorescent probes, low fluorescence intensity, low luminous efficiency, etc., and achieve strong fluorescence Emission intensity, simple synthesis steps, and the effect of improving sensitivity

Active Publication Date: 2022-04-19
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most cases, the fluorescence intensity of these solid phenolic resins is relatively low
When detecting target molecules, low luminescence efficiency will affect the sensitivity of fluorescent probes. Therefore, for better applications, it is urgent to choose appropriate methods to increase their fluorescence intensity.

Method used

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  • Preparation and application of a kind of chlorine-containing phenolic resin nanomaterial
  • Preparation and application of a kind of chlorine-containing phenolic resin nanomaterial
  • Preparation and application of a kind of chlorine-containing phenolic resin nanomaterial

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] The preparation of chlorine-containing phenolic resin nanoparticles used in the present invention is realized through the following steps:

[0039] (1) Add 0.042g of hexamethylenetetramine, 0.15mmol of p-chlorophenol and 30mL of deionized water to a 50mL polytetrafluoroethylene autoclave, and conduct a hydrothermal reaction in an oven at 160°C for 6 hours.

[0040] (2) Take out the reacted solution and place it in a centrifuge tube, set the rotation speed at 11000 rpm, centrifuge for ten minutes, remove the precipitate, keep the supernatant, and dialyze in deionized water for three days.

[0041] (3) Get 200uL of the nano particle sol described in (2) and add the solution of Fe3+, Al3+, Mn2+, Ni2+, Co2+, Fe2+, Zn2+, Ca2+, Sn2+, Cu2+, Cr2+, Fe2+ of 200uL respectively, then add 2mL to remove The deionized water was stirred evenly and allowed to stand for 3 minutes.

[0042] (4) Measure the fluorescence intensity of the above metal ion mixed solution with a fluorescence s...

example 2

[0045] (1) Add 100 uL of chlorinated phenolic resin nanoparticle sol into a 5ml centrifuge tube.

[0046](2) Take 2mL of the Fe3+ solution and add the above-mentioned doped chlorine-containing phenolic resin nanoparticles to form a mixed solution, and let it stand for 3 minutes, wherein the ferric ion concentration is controlled to 0-1mmol.

[0047] (3) Test the fluorescence intensity of the above-mentioned mixed solution with a fluorescence spectrophotometer, the excitation wavelength is 450nm, and record the fluorescence intensity change curve, such as Figure 4 shown;

[0048] (4) draw the curve that chlorine-containing phenolic resin nano-particle is along with the increase of Fe3+concentration weakens fluorescence intensity gradually, and it is fitted, obtain fitting formula y=-5106.22061x+4507.48327 (x is ferric ion concentration [ uM], y is the fluorescence intensity) such as Figure 5 shown;

[0049] (5) Take a certain amount of sample water, remove impurities throu...

example 3

[0053] (1) Add 100uL of the above-mentioned chlorine-containing phenolic resin nanoparticle sol in the test tube;

[0054] (2) 2mLFe3+ was added in the above-mentioned chlorine-containing phenolic resin nanoparticle solution, left standstill for 3 minutes, Fe3+concentration was controlled as 1mmol;

[0055] (3) Add 2 mL of ascorbic acid of different concentrations to the above mixed solution, and finally transfer to the quartz cuvette;

[0056] (4) Test the fluorescence intensity of the above-mentioned mixed solution with a fluorescence spectrophotometer, the excitation wavelength is 450nm, and record the fluorescence intensity change curve, such as Image 6 shown;

[0057] (5) draw the curve that the fluorescence intensity of mixed solution increases gradually along with the increase of ascorbic acid concentration, and it is fitted, obtain fitting formula y=71.5428x+1186.928 (x is ascorbic acid concentration [mM], y is fluorescence intensity) like Figure 7 shown;

[0058...

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Abstract

Preparation and application of a modified chlorine-containing phenolic resin nanoparticle with strong yellow-green fluorescence emission: (1) p-Chlorophenol, hexamethylenetetramine and water are hydrothermally heated at 160°C for 6 hours according to the ratio, and the The supernatant was dialyzed for 2-3 days for use; (2) Chlorine-containing phenolic resin nanoparticles were used to detect Fe 3+ method, a certain amount of chlorine-containing phenolic resin nanoparticles as a fluorescent probe and a certain volume, different concentrations of Fe 3+ Mixed, placed in a fluorescence spectrophotometer to detect the change of the fluorescence intensity of the mixed solution, and establish a linear relationship; (3) chlorinated phenolic resin nanoparticles detect ascorbic acid, a certain amount of chlorinated phenolic resin nanoparticles are used as fluorescent probes with a certain dose Fe 3+ mixing, adding different concentrations of ascorbic acid to the mixed solution, and establishing a linear relationship between the concentration of the added ascorbic acid and the change of the fluorescence intensity of the mixture by fluorescence analysis.

Description

Technical field: [0001] The present invention relates to the preparation of a kind of chlorine-containing phenolic resin nano particle and its effect on Fe 3+ The application in the analysis and detection of ascorbic acid belongs to the technical field of nanometer material synthesis and its optical application. [0002] technical background: [0003] Iron, as a transition metal, widely exists in nature and human body. Fe 3+ It is an extremely common metal ion, which mainly exists in iron salts and their solutions. Fe 3+ It has strong oxidizing properties, is easy to hydrolyze, and can catalyze a variety of reactions. Its solution is brownish yellow, which is because of the color produced by forming a complex with water as a Lewis acid, and Fe 3+ It has oxidative properties, if the content is too high, it will cause the failure of human organs, therefore, Fe 3+ Analysis and detection is particularly important. So far, for Fe 3+ The methods of analysis and detection are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C08G8/14
CPCG01N21/643C08G8/14G01N2021/6432
Inventor 杨萍聂涛涛
Owner ANHUI UNIV OF SCI & TECH
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