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Nano-structure polypyrrole/biotin composite material based on conductive base material, preparation method and application

A conductive substrate and nanostructure technology, which is applied in the field of preparation of polypyrrole/biotin nanostructures, can solve the problems of easy lodging of nanostructures and complicated methods, and achieve the effects of stable nanostructures, simple methods and low cost.

Inactive Publication Date: 2017-11-03
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method involves the process of removing the template. This process generally removes the template by alkali, which has a greater impact on the activity of biomolecules on the surface of the material. At the same time, the method is relatively complicated, and the prepared nanostructure is easy to lodging

Method used

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  • Nano-structure polypyrrole/biotin composite material based on conductive base material, preparation method and application
  • Nano-structure polypyrrole/biotin composite material based on conductive base material, preparation method and application
  • Nano-structure polypyrrole/biotin composite material based on conductive base material, preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] (1) The specification of sheet-shaped conductive substrate titanium is 10×10×1mm 3 , super-clean the substrate with deionized water, 99.7% absolute ethanol and 99.5% acetone respectively for 20 minutes;

[0036] (2) Select the three-electrode mode, the conductive substrate is the working electrode, the copper sheet is the counter electrode, the saturated calomel electrode is the reference electrode, the concentration of pyrrole in the electrolyte solution is 0.2mol / L, and the concentration of hydrochloric acid is 0.25mol / L , the electrochemical reaction is controlled by chronoamperometry, the reaction potential (relative to the reference electrode) is 0.8V, and the reaction time is 20 seconds. A layer of dense and uniform black polypyrrole is deposited on the titanium electrode, which is soaked in deionized water to Remove the unreacted pyrrole and hydrochloric acid on the surface to obtain a titanium electrode deposited with polypyrrole;

[0037] (3) Select the three-...

Embodiment 2

[0040] (1) Sheet conductive substrate (conductive glass) specification is 10×10×1mm 3 , super-clean the substrate with deionized water, 99.7% absolute ethanol and 99.5% acetone respectively for 20 minutes;

[0041] (2) Select the three-electrode mode, the conductive substrate is the working electrode, the copper sheet is the counter electrode, the saturated calomel electrode is the reference electrode, the concentration of pyrrole in the electrolyte solution is 0.2mol / L, and the concentration of hydrochloric acid is 0.25mol / L , the electrochemical reaction is controlled by chronoamperometry, the reaction potential (relative to the reference electrode) is 0.8V, the reaction time is 20 seconds, a layer of dense and uniform black polypyrrole is deposited on the conductive glass electrode, and it is soaked in deionized water To remove unreacted pyrrole and hydrochloric acid on the surface, obtain a conductive glass electrode deposited with polypyrrole;

[0042] (3) Select the thr...

Embodiment 3

[0045] (1) The specification of sheet-shaped conductive substrate titanium is 10×10×1mm 3 , super-clean the substrate with deionized water, 99.7% absolute ethanol and 99.5% acetone respectively for 20 minutes;

[0046] (2) Select the three-electrode mode, the conductive substrate is the working electrode, the copper sheet is the counter electrode, the saturated calomel electrode is the reference electrode, the concentration of pyrrole in the electrolyte solution is 0.2mol / L, and the concentration of hydrochloric acid is 0.25mol / L , the electrochemical reaction is controlled by chronoamperometry, the reaction potential (relative to the reference electrode) is 0.8V, and the reaction time is 20 seconds. A layer of dense and uniform black polypyrrole is deposited on the titanium electrode, which is soaked in deionized water to Remove the unreacted pyrrole and hydrochloric acid on the surface to obtain a titanium electrode deposited with polypyrrole;

[0047] (3) Select the three-...

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Abstract

The invention belongs to the technical field of medical biomaterials, and discloses a nano-structure polypyrrole / biotin composite material based on a conductive base material, a preparation method and application. The preparation method for the nano-structure polypyrrole / biotin composite material based on the conductive base material comprises the steps that firstly, the chlorine-doped polypyrrole is electro-deposited on the surface of the conductive base material by adopting chronoamperometry; then a three-electrode mode is selected, conductive metal is a counter electrode, the conductive base material with the polypyrrole deposited on the surface is a working electrode, an electrolyte is a buffer solution containing pyrrole and biotin, and chronopotentiometry is adopted so as to obtain the nano-structure polypyrrole / biotin composite material based on the conductive base material; when the buffer solution is neutral, a nano-cone-structure polypyrrole / biotin material is deposited on the surface of the working electrode; and when the buffer solution is acidic or alkaline, a nano-particle-structure polypyrrole / biotin material is deposited on the surface of the working electrode. The preparation method is simple, the cost is low, the nano structure of the prepared composite material is stable, and the preparation method can be used for preparing materials for efficiently capturing and releasing circulating tumor cancer cells.

Description

technical field [0001] The invention relates to a medical biomaterial manufacturing technology, in particular to a preparation method of a polypyrrole / biotin nanostructure. Background technique [0002] Due to the nanoscale effect of nanomaterials, conductive polypyrrole nanomaterials exhibit excellent chemical properties. In addition, the different electrical and physical properties of nanomaterials and bulk materials play a crucial role in the construction of conductive polypyrrole nanomaterials. The properties of conductive polymer nanomaterials have broad applications in many ways. At present, researchers have invented various preparation methods of conductive polymer nanomaterials. Although researchers have invented some simple and novel preparation methods, advanced technical methods to control the properties of conductive polymer nanomaterials are still a challenge. [0003] Biotin is widely distributed in organisms and is one of the vitamins necessary for maintain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/02C12M1/00
CPCC25D9/02C12M47/04
Inventor 宁成云王珍高于鹏谭帼馨付如民曾嘉瑜
Owner SOUTH CHINA UNIV OF TECH
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