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Method for preparing chiral polyaniline by protein induction

A chiral polyaniline and protein technology, applied in the fields of chemistry and biochemistry, can solve the problems of complex biological extraction steps, limited application, high price, etc., and achieve the effects of simple, mild, environmentally friendly experimental conditions, low price, and a wide range of sources.

Inactive Publication Date: 2014-03-05
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, DNA requires complex biological extraction steps, which are cumbersome and expensive, thus limiting its application in large-scale production due to high cost.

Method used

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  • Method for preparing chiral polyaniline by protein induction
  • Method for preparing chiral polyaniline by protein induction
  • Method for preparing chiral polyaniline by protein induction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 0.0204g of DBSA and dissolve it in 9.7mL of pH2.0 buffer solution; stir well and add 0.125mmol aniline monomer; weigh 10mg of bovine hemoglobin and dissolve it in 200μl distilled water and add it to the system; then add the concentration to 9.823mol 100 μL of hydrogen peroxide solution per L was added to the reaction system in 4 times within one hour. After stirring and reacting for 8 hours, 10 ml of methanol was added to break the emulsion and terminate the reaction. After the product was precipitated, it was collected by centrifugation, and after drying, a dark green powder was obtained with an apparent yield of 138.8%. Characterized by circular dichroism, a positive circular dichroism peak is generated at about 475 nm, which proves that the product is chiral polyaniline, and its molar ellipticity value is 1100 degree cm 2 ·decimole -1 . Circular dichroism spectrum as attached figure 1 shown.

Embodiment 2

[0030] Weigh 0.0408g of DBSA and dissolve in 9.5mL of pH2.0 buffer solution; stir well and add 0.250mmol aniline monomer; weigh 2mg of bovine hemoglobin and 8mg of bovine serum albumin, dissolve them in 200μl of distilled water and add to the system ; Then 100 μL of hydrogen peroxide solution with a concentration of 9.823 mol / L was added to the reaction system in 8 times within one hour. After stirring and reacting for 12 hours, 10 ml of methanol was added to break the emulsification and terminate the reaction. After the product was precipitated, it was collected by centrifugation, and after drying, a dark green powder was obtained with an apparent yield of 124.3%. Characterized by circular dichroism, a positive circular dichroism peak is generated at about 475 nm, which proves that the product is chiral polyaniline, and its molar ellipticity value is 910 degree cm 2 ·decimole -1 . Circular dichroism spectrum as attached figure 2 shown.

Embodiment 3

[0032] Weigh 0.0216g of SDS and dissolve in 9.7mL of pH1.0 buffer solution; stir well and add 0.1875mmol of aniline monomer; weigh 10mg of bovine hemoglobin and dissolve it in 200μl of distilled water and add to the system; then add the concentration to 12.5mmol 100 μL of ammonium persulfate solution per L was added to the reaction system five times within one hour. After stirring and reacting for 18 hours, 10 ml of methanol was added to break the emulsification and terminate the reaction. After the product was precipitated, it was collected by centrifugation, and after drying, a dark green powder was obtained with an apparent yield of 121.2%. Characterized by circular dichroism, a positive circular dichroism peak is generated at about 475 nm, which proves that the product is chiral polyaniline, and its molar ellipticity value is 860 degree cm 2 ·decimole -1 . Circular dichroism spectrum as attached image 3 shown

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Abstract

The invention discloses a method for preparing chiral polyaniline in an anionic-surfactant-containing acidic water solution by protein induction. The method comprises the following steps: respectively adding an anionic surfactant and aniline monomer into a citric acid-disodium hydrogen phosphate buffer solution with the pH value of 1-3, and mixing and stirring; adding a protein water solution into the system; and stirring uniformly, adding a hydrogen peroxide or ammonium persulfate solution, and stirring at normal temperature to react for some time, thereby obtaining the chiral polyaniline. In the method, the protein is used as a chiral inducer to prepare the chiral polyaniline, and the chiral inducer has the advantages of wide sources and low price; the required experimental conditions are simple, mild and environment-friendly; and the obtained chiral has the advantages of high stereospecificity and high yield, and has potential large-scale application value.

Description

technical field [0001] The invention relates to the fields of chemistry and biochemistry, in particular to a method for preparing chiral polyaniline through protein induction in an anionic surfactant solution. Background technique [0002] Among many conductive polymers, polyaniline is currently one of the most promising conductive polymers due to its easy-to-obtain raw materials, controllable structure and properties, easy synthesis, and good environmental stability, which expands the application range of polymers. The generation of chiral polymers has opened up a new field for functional materials. In recent years, chiral polymers have promising applications in chemical and biological sensors, surface repair electrodes, chiral separation and chiral recognition, etc. [0003] Generally speaking, enantioselective polymerization of chiral substituted monomers is often used in the synthesis of chiral polymers, but the preparation process of chiral monomers is cumbersome and e...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 陈建波郭红冲徐毅
Owner SHANGHAI NORMAL UNIVERSITY
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