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Method for preparing chirality polyaniline under cyclodextrin induction and biocatalysis in DBSA (dodecylbenzene sulfonic acid) micellar system

A technology of chiral polyaniline and biocatalysis, which is applied in the field of chemistry and biochemistry, can solve the problems of high cost, limited application, easy inactivation, and high price of natural peroxidase, and achieves good chiral effect, low price, good catalytic effect

Inactive Publication Date: 2014-10-15
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, natural peroxidase is expensive and easily inactivated, so the high cost limits its application in large-scale production

Method used

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  • Method for preparing chirality polyaniline under cyclodextrin induction and biocatalysis in DBSA (dodecylbenzene sulfonic acid) micellar system
  • Method for preparing chirality polyaniline under cyclodextrin induction and biocatalysis in DBSA (dodecylbenzene sulfonic acid) micellar system
  • Method for preparing chirality polyaniline under cyclodextrin induction and biocatalysis in DBSA (dodecylbenzene sulfonic acid) micellar system

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Experimental program
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Effect test

Embodiment 1

[0029] Weigh 0.05mmol of β-cyclodextrin and dissolve it in 9.7mL of citric acid-disodium hydrogen phosphate buffer solution with pH 2.0; after stirring evenly, add 0.125mmol of aniline monomer and 0.125mmol of DBSA respectively; weigh 2mg of hemoglobin with 239μl Distilled water was dissolved and added to the system; then 61 μL of hydrogen peroxide solution with a concentration of 9.823 mol / L was added to the reaction system. After stirring for 24 hours, an equal volume 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. Characterized by circular dichroism chromatography, a strong circular dichroism peak was generated at 475 nm, which proved that it had the characteristics of chiral polyaniline. as follows figure 1 shown.

Embodiment 2

[0031] Weigh 0.1mmol of methyl-β-cyclodextrin and dissolve it in 9.7mL of citric acid-disodium hydrogen phosphate buffer solution with pH 2.0; stir well and add 0.125mmol of aniline monomer and 0.17mmol of DBSA respectively; weigh 3mg The hemoglobin was dissolved in 219 μl of distilled water and added to the system; then 81 μL of hydrogen peroxide solution with a concentration of 9.823 mmol / L was added to the reaction system. After stirring for 24 hours, an equal volume 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. Characterized by circular dichroism, a strong circular dichroism peak was generated at 475 nm, which proved that it had the characteristics of chiral polyaniline. as follows figure 2 shown.

Embodiment 3

[0033] Weigh 0.2mmol of hydroxypropyl-β-cyclodextrin and dissolve it in 9.7mL of citric acid-disodium hydrogen phosphate buffer solution with pH 2.0; after stirring evenly, add 0.125mmol of aniline monomer and 0.25mmol of DBSA respectively; weigh 6 mg of hemoglobin was dissolved in 204 μl of distilled water and added to the system; then 96 μL of hydrogen peroxide solution with a concentration of 9.823 mol / L was added to the reaction system. After stirring for 24 hours, an equal volume 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. Characterized by circular dichroism, a strong circular dichroism peak was generated at 475 nm, which proved that it had the characteristics of chiral polyaniline. as follows image 3 shown.

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Abstract

The invention discloses a method for preparing chirality conductive polyaniline through adding Beta-cyclodextrin or a derivative thereof under (chemical modification of Beta-cyclodextrin) in a DBSA (dodecylbenzene sulfonic acid) micellar system for induction and simultaneously catalyzed by haemoglobin. The method comprises the following steps: cyclodextrin or the derivative thereof is resolved in a citric acid-disodium hydrogen phosphate buffer solution with pH of 2.0 and then DBSA and aniline monomer are added respectively, stirred and mixed; then haemoglobin is resolved in distilled water and the solution is added in the reaction system; a hydrogen peroxide solution is added after the mixture is stirred uniformly; then the mixture is stirred at ordinary temperature and reacts for 2-24 h to obtain chirality polyaniline. According to the method, as haemoglobin is adopted as a catalyst in the DBSA micellar system under the induction of Beta-cyclodextrin or the derivative thereof for preparing chirality polyaniline, the reaction conditions are mild, the cost is low, the operational steps are simple, the chirality signals are good and the application prospect is wide.

Description

technical field [0001] The present invention relates to the fields of chemistry and biochemistry, in particular to a micelle formed by DBSA (dodecylbenzenesulfonic acid) for induction by adding β-cyclodextrin or its derivatives and using hemoglobin biocatalysis to prepare chiral The PANI method. Background technique [0002] Among many conductive polymers, polyaniline is one of the most promising conductive polymers at present, with its easy-to-obtain raw materials, controllable structure and properties, easy synthesis, and good environmental stability, which expands the application range of polymers. The emergence of conductive polymers has opened up a new field for functional materials. In recent years, chiral conductive polymers have promising applications in chemical and biological sensors, surface repair electrodes, chiral separation and chiral recognition, etc. [0003] The traditional methods for synthesizing chiral conductive polyaniline mainly contain the followin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02
Inventor 陈建波郭红冲徐毅
Owner SHANGHAI NORMAL UNIVERSITY
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