Modified electrode based on phenylboronic acid imprinted polymer/carbon nanotube, preparation method thereof and application

A technology of imprinting polymers and carbon nanotubes, applied in the direction of material electrochemical variables, etc., can solve problems such as poor selectivity, low signal, and complex process

Active Publication Date: 2016-01-06
ANHUI NORMAL UNIV
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Problems solved by technology

[0005] In view of the above-mentioned prior art, the object of the present invention is to overcome the problems in the prior art that the detection process of rutin is often complex, high cost, low signal, and poor selectivity, thereby providing a kind of specific identification of rutin, which has High anti-interference ability, sensitive quantitative detection of rutin, simple and low-cost preparation based on phenylboronic acid imprinted polymer / carbon nanotube modified electrode and preparation method thereof

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  • Modified electrode based on phenylboronic acid imprinted polymer/carbon nanotube, preparation method thereof and application
  • Modified electrode based on phenylboronic acid imprinted polymer/carbon nanotube, preparation method thereof and application
  • Modified electrode based on phenylboronic acid imprinted polymer/carbon nanotube, preparation method thereof and application

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preparation example Construction

[0029] The present invention provides a preparation method based on phenylboronic acid imprinted polymer / carbon nanotube modified electrode, wherein the preparation method comprises:

[0030] 1) Depositing carbon nanotubes on the surface of the glassy carbon electrode to prepare a carbon nanotube modified electrode;

[0031] 2) placing the carbon nanotube modified electrode prepared in step 1) in a buffer solution containing 3-aminophenylboronic acid and rutin, and preparing the 3-aminophenylboronic acid modified electrode by cyclic voltammetry;

[0032] 3) The 3-aminophenylboronic acid modified electrode is eluted to obtain a phenylboronic acid imprinted polymer / carbon nanotube modified electrode.

[0033] The above design first deposits carbon nanotubes on the surface of the glassy carbon electrode at a constant potential, thereby increasing the electron transfer rate of rutin during the reaction process, increasing the response current, and improving the detection sensitivi...

preparation example 1

[0060] 1) Grind the glassy carbon electrode on the suede, and place the polished glassy carbon electrode in K with a concentration of 0.1mmol / L 3 [Fe(CN) 6 ] / K 4 [Fe(CN) 6 ] Electrochemical treatment was carried out by cyclic voltammetry in the solution until the peak potential value difference between the oxidation peak and the reduction peak △Ep<75mV, then ultrasonically cleaned with ethanol and water and dried;

[0061] 2) Immerse the pretreated glassy carbon electrode in a carbon nanotube solution with a concentration of 0.3 mg / mL, deposit it at a constant potential of +1.7 V for 400 s, and then rinse it with deionized water to obtain a carbon nanotube-modified Electrodes, stored at room temperature for later use;

[0062] 3) Add 120 μL of 0.05 mol / L 3-aminophenylboronic acid solution and 100 μL of 0.02 mol / L rutin solution into 5 mL of 0.05 mol / L phosphate buffer solution (pH=8.0) and mix Vibrate to form a uniform polymerization solution, and pass nitrogen into the po...

preparation example 2

[0065] The preparation was carried out according to the preparation method of Preparation Example 1, except that the amount of 3-aminophenylboronic acid solution in step 3) was 40 μL, and the modified electrode A2 based on phenylboronic acid imprinted polymer / carbon nanotubes was prepared.

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Abstract

The invention discloses a modified electrode based on phenylboronic acid imprinted polymer / carbon nanotube, a preparation method thereof and application. The preparation method comprises: 1) depositing carbon nanotube on the surface of the glassy carbon electrode to get a carbon nanotube modified electrode; 2) adding the carbon nanotube modified electrode prepared by step 1) into a buffer solution containing 3-aminophenylboronic acid and rutin to get a 3-aminophenylboronic modified electrode by using a cyclic voltammetry method; 3) and washing out the 3-aminophenylboronic modified electrode to get the modified electrode based on phenylboronic acid imprinted polymer / carbon nanotube. According to the invention, the effects on specific recognition of rutin, sensitive quantitative determination of rutin, high anti-interference capability, simple preparation and low cost can be realized.

Description

technical field [0001] The invention relates to the field of production and preparation of electrodes, in particular to a modified electrode based on phenylboronic acid imprinted polymer / carbon nanotubes and its preparation method and application. Background technique [0002] In recent years, molecular imprinting technology has developed rapidly. Due to its excellent ability to selectively recognize molecules, it has gradually replaced enzymes and antibodies in biosensing. It also has the advantages of stable performance, low cost, and easy preparation, and is widely used. It is widely used in the fields of bionic sensing, chromatographic separation, enzyme simulation, drug analysis and chiral resolution. [0003] Rutin is a flavonoid derivative with an ortho-dihydroxy structure, which is commonly used in the treatment of osmotic bleeding, and has the effects of reducing capillary fragility and reducing blood fat and cholesterol levels. There have been many related reports...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 王春蕾王琪钟敏阚显文
Owner ANHUI NORMAL UNIV
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