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Process for synthesizing electron conductive polymer poly-o-amino-thiophenol

A technology of o-aminothiophenol and its synthesis method, which is applied in the field of synthesis of electronically conductive polymer poly-o-aminothiophenol, can solve the problems of high emulsifier concentration, high preparation cost, and difficult removal, and reduce the degree of oxidation , increase the molecular weight, reduce the effect of oxidation degree

Inactive Publication Date: 2005-09-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the polymerization process, a lower amount of oxidant (initiator) is used, the heat of polymerization is effectively dispersed in the water phase to avoid local overheating, and the viscosity of the system changes little, which is beneficial to increase the molecular weight of the polymer; however, the concentration of the emulsifier in the emulsion polymerization system is large, which is not easy It is completely removed, which brings many difficulties to the purification of the product, and requires a large amount of organic solvents and precipitants, and the preparation cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Under nitrogen protection, 80mL 0.12mol / L HCl and 3.802g SDS (0.12mol / L) were successively added to a 250mL reactor, heated to 70°C, and after the dissolution was complete, 1.252g o-aminothiophenol (0.1 mol / L), stir evenly, and dissolve 0.014mol APS in 30mL 0.12mol / L HCl solution, slowly drop into the reaction system, about 1.0h to complete the drop. After reacting for 10 hours, the reaction solution was left standing in a refrigerator at 6° C. for 24 hours, and 70 mL of ethanol was added to break the emulsification and precipitate the polymer. Suction filtration, wash the solid with deionized water until the filtrate has no foam, and then wash with ethanol several times until the filtrate is colorless, and vacuum-dry at room temperature to obtain brown powdery polymer PAT (HCl), with a yield of about 85%.

Embodiment 2

[0022] Under nitrogen protection, 50mL 0.2mol / L HCl and 2.88g SDS (0.1mol / L) were successively added to a 250mL reactor, heated to 50°C, and after the dissolution was complete, 0.626g o-aminothiophenol ( 0.05mol / L), stir evenly, and dissolve 0.01mol APS in 50mL 0.1mol / L HCl solution, slowly drop into the reaction system, about 2.0h to finish. After reacting for 12 hours, the reaction solution was placed in a refrigerator at 5° C. for 24 hours, and 60 mL of ethanol was added to break the emulsification and precipitate the polymer. Suction filtration, wash the solid with deionized water until the filtrate has no foam, and then wash with ethanol several times until the filtrate is colorless, and vacuum-dry at room temperature to obtain brown powdery polymer PAT (HCl), with a yield of about 75%.

Embodiment 3

[0024] Under the protection of argon, add 100mL of 0.3mol / L HCl and 8.064g of SDS (0.2mol / L) to a 250mL three-necked flask successively, heat to 80°C, and after the dissolution is complete, add 2.5014g of anthranilic acid dropwise Phenol (0.2mol / L), stir evenly, and dissolve 0.03mol APS in 40mL 0.2mol / L HCl solution, slowly drop into the reaction system, about 1.5h to finish. After reacting for 8 hours, the reaction solution was placed in a refrigerator at 8° C. for 24 hours, and 100 mL of ethanol was added to break the emulsification and precipitate the polymer. Suction filtration, wash the solid with deionized water until the filtrate has no foam, and then wash with ethanol several times until the filtrate is colorless, and vacuum-dry at room temperature to obtain brown powdery polymer PAT (HCl), with a yield of about 60%.

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Abstract

This invention is a synthesis method of electron conduction polymer poly near amino thiophenols. It relates to an electron conduction polymer, especially a synthesis method of electron conduction polymer poly near amino thiophenols. It provides a synthesis method of electron conduction polymer poly near amino thiophenols. Poly near amino thiophenols is synthesized through emulsion aggregation method. Procedures are that HCl solution and dodecyl sodium sulphate are added into polymerise tank, then heated until dodecyl sodium sulphate is dissolved, poly near amino thiophenols is added, then HCl solution of ammonium persulfate is added to reaction system, then the reaction liquor is standing. Ethanol is added to the reaction liquor until emulsion breaking and polymer deposited and evolved, filtrated, scrubbed and dried. The PAT synthesized by emulsion method reduces oxidation degree of SH on PAT benzene ring, and enlarge the molecular weight of polymerisate.

Description

technical field [0001] The invention relates to an electronically conductive polymer, in particular to a method for synthesizing the electronically conductive polymer poly-o-aminothiophenol. Background technique [0002] Electron-conducting polymers have long-chain conjugated structures, among which are typical conjugated polymers with aromatic heterocycles as basic structural units, such as polyaniline (PAn), polypyridine (Ppy), polythiophene (PTh), polyfuran etc. Compared with polyacetylene, these polymers are more stable in air and easier to chemically modify. Among them, polyaniline has the advantages of low monomer price, simple synthesis process, special doping mechanism, good electrical conductivity, excellent environmental stability, reversibility and controllability of electrical conductivity, etc., and exhibits specific optical and electrical properties. , Magnetic properties have become an important research direction of electronically conductive polymers. [0...

Claims

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Application Information

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IPC IPC(8): C08G75/00
Inventor 许一婷戴李宗陈江枫吴辉煌
Owner XIAMEN UNIV
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