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Method for applying ionic liquid functionalized graphene modified electrode in detection of 5-hydroxytryptamine and dopamine

An ionic liquid and modified electrode technology, applied in the direction of electrochemical variables of materials, etc., can solve the problems of poor selectivity and low sensitivity, and achieve the effects of good selectivity, high sensitivity and simple preparation.

Inactive Publication Date: 2014-07-30
NORTHWEST NORMAL UNIVERSITY
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Problems solved by technology

Although, electrochemical methods can meet the above requirements, but usually the traditional electrochemical methods have low sensitivity and poor selectivity.

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  • Method for applying ionic liquid functionalized graphene modified electrode in detection of 5-hydroxytryptamine and dopamine
  • Method for applying ionic liquid functionalized graphene modified electrode in detection of 5-hydroxytryptamine and dopamine
  • Method for applying ionic liquid functionalized graphene modified electrode in detection of 5-hydroxytryptamine and dopamine

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Embodiment Construction

[0028] In order to illustrate the content of the present invention more clearly, the specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0029] Used instrument and medicine in the implementation process of the present invention:

[0030]CHI 660C electrochemical workstation (Shanghai Chenhua Instrument Co., Ltd.) was used for cyclic voltammetry experiments. Quartz tube heating automatic double pure water still (1810B, Shanghai Asia Pacific Technology Glass Co., Ltd.) was used to distill twice distilled water. Electronic balance (Beijing Sartorius Instrument Co., Ltd.), used for weighing medicines. Ultrasonic cleaner (Kunshan Ultrasonic Instrument Co., Ltd.). Aluminum oxide grinding powder (0.30 m, 0.05 m, Shanghai Chenhua Instrument Reagent Co., Ltd.) for processing glassy carbon electrodes. Saturated calomel reference electrode, platinum column counter electrode, sodium dihydrogen phosphate, diso...

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Abstract

The invention discloses a method for applying an ionic liquid functionalized graphene modified electrode in concurrent detection of 5-hydroxytryptamine and dopamine, wherein an amine terminated imidazole ionic liquid and the epoxy group of graphene oxide lamellas are subjected to a nucleophilic ring opening reaction to form ionic liquid functionalized graphene, and then the ionic liquid functionalized graphene is modified on a glassy carbon electrode to form a modification layer so as to concurrently detecting 5-hydroxytryptamine and dopamine. According to the present invention, research results show that the ionic liquid functionalized graphene modified electrode provides good electrocatalysis activity for oxidation of 5-hydroxytryptamine and dopamine, and can be provided for individually detecting 5-hydroxytryptamine and dopamine and concurrently detecting 5-hydroxytryptamine and dopamine, and the method has characteristics of simple detection process, high sensitivity, rapidness and convenience.

Description

technical field [0001] The invention relates to a method for detecting 5-hydroxytryptamine and dopamine. Specifically, it refers to the detection of serotonin and dopamine with an ionic liquid functionalized graphene-modified electrode. Background technique [0002] Graphene is a two-dimensional planar structure composed of a single layer of carbon atoms closely arranged in a regular hexagonal honeycomb shape. It is a typical nanomaterial with excellent mechanical, electrical and chemical properties such as stable chemical structure and large specific surface area. properties, and has potential application value in electrochemical sensors. However, the intermolecular force makes graphene layers easy to agglomerate, which is not conducive to its modification on the electrode surface, nor to its advantages after modification. [0003] Ionic liquid (IL) refers to a liquid substance composed entirely of anions and cations at room temperature or near room temperature. It not on...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N27/30
Inventor 刘秀辉刘盼盼董明君卢小泉
Owner NORTHWEST NORMAL UNIVERSITY
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