Making method and application of polythiophene derivative electrochemiluminescence sensor

A polythiophene derivative, electrochemical technology, applied in the direction of chemiluminescence/bioluminescence, analysis through chemical reaction of materials, electrochemical variables of materials, etc., to achieve high-sensitivity, high-sensitivity, and rapid detection effects

Inactive Publication Date: 2015-01-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection of potassium bromate based on electrochemiluminescence sensor has not been reported at present, and the detection range of potassium bromate in the present invention is 1 μmol L-1~0.1 mol L-1, the detection limit 1μmol L-1

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 A kind of preparation method of polythiophene derivative electrochemiluminescence sensor

[0023] (1) A gold electrode with a diameter of 4 mm was polished with 1.0 mm, 0.3 mm and 0.05 mm aluminum oxide polishing powder in sequence, ultrasonically cleaned with ethanol, and then rinsed with ultrapure water;

[0024] (2) Mix 4 μL, 0.5 mg mL -1 Chitosan solution of polythiophene derivative poly(3-(1,1′-dimethyl-4-piperidinyl methylene)-2,5-chlorothiophene) was drop-coated on the electrode surface and stored at room temperature until dry ;

[0025] (3) Drop-coat 5 μL of Nafion ethanol solution with a volume fraction of 0.1% on the surface of the gold electrode, store it at room temperature until dry, and dry it to form a film to prepare a potassium bromate electrochemiluminescence sensor; the Nafion ethanol solution is obtained by mass fraction The 5% Nafion solution was diluted with absolute ethanol to a volume fraction of 0.1%; the Nafion was a perfluorinate...

Embodiment 2

[0026] Example 2 A kind of preparation method of polythiophene derivative electrochemiluminescence sensor

[0027] (1) A gold electrode with a diameter of 4 mm was polished with 1.0 mm, 0.3 mm and 0.05 mm aluminum oxide polishing powder in sequence, ultrasonically cleaned with ethanol, and then rinsed with ultrapure water;

[0028] (2) Mix 4 μL, 1.5 mg mL -1 Chitosan solution of polythiophene derivative poly(3-(1,1′-dimethyl-4-piperidinyl methylene)-2,5-chlorothiophene) was drop-coated on the electrode surface and stored at room temperature until dry ;

[0029] (3) Drop-coat 5 μL of Nafion ethanol solution with a volume fraction of 0.5% on the surface of the gold electrode, store it at room temperature until dry, and dry it to form a film to prepare a potassium bromate electrochemiluminescence sensor; the Nafion ethanol solution is obtained by mass fraction The 5% Nafion solution was diluted with absolute ethanol to a volume fraction of 0.5%; the Nafion was a perfluorinate...

Embodiment 3

[0030] Example 3 A kind of preparation method of polythiophene derivative electrochemiluminescence sensor

[0031] (1) A gold electrode with a diameter of 4 mm was polished with 1.0 mm, 0.3 mm and 0.05 mm aluminum oxide polishing powder in sequence, ultrasonically cleaned with ethanol, and then rinsed with ultrapure water;

[0032] (2) Mix 4 μL, 5 mg mL -1 Chitosan solution of polythiophene derivative poly(3-(1,1′-dimethyl-4-piperidinyl methylene)-2,5-chlorothiophene) was drop-coated on the electrode surface and stored at room temperature until dry ;

[0033] (3) Drop-coat 5 μL of Nafion ethanol solution with a volume fraction of 2.0% on the surface of the gold electrode, store it at room temperature until dry, and dry it to form a film to obtain a potassium bromate electrochemiluminescence sensor; the Nafion ethanol solution is obtained by mass fraction The 5% Nafion solution was diluted with absolute ethanol to a volume fraction of 2.0%; the Nafion was a perfluorinated s...

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PUM

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Abstract

The invention relates to a making method and an application of a polythiophene derivative electrochemiluminescence sensor. In the invention, a polythiophene derivative poly(3-1,1'-dimethyl-4-piperidylmethylene)-2,5- chlorothiophene) is used as a luminescence material, has good water solubility and good optical performances, and is in favor of constructing sensitive and stable electrochemiluminescence sensors. Bromate ions are used as a coreactant of an electrochemiluminescence reaction of poly(3-1,1'-dimethyl-4-piperidylmethylene)-2,5- chlorothiophene) due to the oxidation of the bromate ions, and the electrochemiluminescence intensity varies with the concentration of the bromate ions in order to detect the bromate ions. The potassium bromate electrochemiluminescence sensor made in the invention has the characteristics of simplicity, rapidness and sensitiveness, and is suitable for the rapid detection of potassium bromate in drinking water and river water.

Description

technical field [0001] The invention relates to a preparation method and application of a polythiophene derivative electrochemical luminescence sensor. Specifically, a polythiophene derivative poly(3-(1,1′-dimethyl-4-piperidinyl methylene)-2,5-chlorothiophene) was used as a luminescent material to prepare a method for detecting potassium bromate electrochemiluminescence The sensor belongs to the technical field of electrochemiluminescence detection. Background technique [0002] As a food additive, potassium bromate can be used in brewing beverages and fermented bread, etc., and has been detected in drinking water as a disinfection by-product. In the review report on the safety of potassium bromate published by the World Health Organization in 1992, it was confirmed that potassium bromate is an oxidative carcinogen, which can cause cancer in the bladder tissue and kidney of animals. The International Agency for Research on Cancer has confirmed that potassium bromate is a 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76G01N27/30
Inventor 魏琴李小建张勇马洪敏庞雪辉胡丽华
Owner UNIV OF JINAN
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