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A method for preventing discoloration of thiophene conductive polymerization monomers

A conductive polymerization, thiophene technology, applied in the direction of organic chemistry, etc., can solve problems such as reducing product performance and service life, discoloration, affecting product appearance and performance, etc.

Active Publication Date: 2019-03-08
贝利科技(重庆)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to its structural properties, thiophene conductive polymerizable monomers will undergo polymerization and oxidation during storage and transportation, which will cause the product to change color (from colorless to dark yellow) within a few days or even a few hours. Seriously affect product appearance and product performance, greatly reducing product performance and service life
At present, the measures taken by most companies or manufacturers are to avoid light, low temperature, and inert gas protection, but this can only prevent oxidation and polymerization for a short time, and can only play a mitigating and auxiliary role, and cannot fundamentally solve the problem
In the current prior art, there are no literature reports on the application of thiophene conductive polymer monomers to resist discoloration by adding anti-discoloration additives

Method used

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  • A method for preventing discoloration of thiophene conductive polymerization monomers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take commercially available 3,4-ethylenedioxythiophene with a content ≥ 98.5, the color of the product is No. 10 (platinum-cobalt method), weigh 1000g, and add 0.05g~0.1g of anti-discoloration agent at 30°C In a 1000ml wide-mouth bottle, place it under 250WE27 infrared lamp and ultraviolet lamp to bake and irradiate simultaneously. After baking and irradiation, the temperature of the product reaches 70°C, observe the discoloration of 3,4-ethylenedioxythiophene, record the time it takes for the color of the product to change to No. 100, and do a blank test and a positive control test. The positive control is lemon acid. The experimental results are shown in Table 2:

[0033] Table 2

[0034] serial number

Embodiment 2

[0036] Take commercially available 3,4-dimethoxythiophene with a content ≥ 98.5, the color of the product is No. 10 (platinum-cobalt method), weigh 1000g, and add 0.05g~0.1g of anti-discoloration at 30°C In the 1000ml wide-mouth bottle of agent, be placed under 250WE27 infrared lamp and ultraviolet lamp and simultaneously bake and irradiate. After baking and irradiation, the temperature of the product reaches 70°C, observe the discoloration of 3,4-dimethoxythiophene, record the time it takes for the color of the product to change to No. 100, and do a blank test and a positive control test. The positive control product is citric acid. The experimental results are shown in Table 3:

[0037] table 3

[0038] serial number

[0039] From the experimental results of the above-mentioned Examples 1 and 2, it can be seen that after adding the anti-tarnish agent, when the temperature of the thiophene conductive polymerized monomer is as high as 70°C, the time taken for the p...

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Abstract

The invention discloses a method for preventing thiophene conducting polymeric monomer from discoloration after long-term placement, specifically comprising the step of adding an anti-discoloring agent into the thiophene conducting polymeric monomer as an anti-discoloration stabilizing agent, wherein the added anti-discoloring agent can prevent the thiophene conducting polymeric monomer from discoloration due to polymerization and oxidation in the processes of storage and transportation, and can enhance product stability without affecting product application performance. The method for preventing the thiophene conducting polymeric monomer from the discoloration disclosed by the invention has the advantages of less additive amount of the anti-discoloring agent, simple adding method and low cost, and is very applicable to industrialized production.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a method for preventing discoloration of thiophene conductive polymerization monomers by adding an anti-discoloration agent. Background technique [0002] Five-membered heterocyclic compounds such as thiophene, furan, and pyrrole have 6 π electrons in the ring, which conform to Huckel's rule and are aromatic. The electron cloud density of thiophene is higher than that of the other two, so thiophene has unique optical properties and electron transport capabilities; thiophene is more active, photosensitivity, and carbon frame rearrangement occurs when illuminated. With the rapid development of optoelectronic materials research, thiophene compounds are increasingly used in the field of optoelectronic materials due to their good optoelectronic properties. [0003] However, due to its structural properties, thiophene conductive polymerizable monomers will undergo polymerization and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D333/32C07D495/04
CPCC07D333/32C07D495/04
Inventor 徐晓东任春和程文峰张雯君杨巧梅颜廷帅
Owner 贝利科技(重庆)有限公司