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Polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and preparing method of polyarylester liquid crystal material

A technology of photoelectric activity and liquid crystal materials, applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve the problems of undiscovered polyarylate, etc., and achieve the effects of good photoelectric activity, good high temperature resistance and mechanical properties, and easy availability of raw materials

Inactive Publication Date: 2016-04-27
ANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Polymers containing aniline segments and azo groups in the synthetic molecular chain structure commonly used in the literature are often polyamides, polyamic acids, polyethers and polyether ketones, and azoyl chlorides and p-hydroxydiphenylamines have not been found. A literature report on the preparation of polyarylates containing both azo groups and aniline segments in the main chain by oxidative coupling polymerization after esterification

Method used

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  • Polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and preparing method of polyarylester liquid crystal material
  • Polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and preparing method of polyarylester liquid crystal material
  • Polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and preparing method of polyarylester liquid crystal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of azo substituted phthaloyl chloride:

[0039] Dissolve 6.5g (38.9mmol) m-nitrobenzoic acid and 25g (625mmol) sodium hydroxide in 120mL water, stir well to obtain solution 1 and heat up to 50°C; dissolve 50g glucose in 75mL water to obtain solution 2, and in 30 minutes Add solution 2 dropwise to solution 1, maintain the temperature at 60°C and stir for 8 hours, then neutralize the reaction solution with acetic acid to a pH of about 2-3, filter, wash the filter cake with water, and then dissolve it with hot potassium carbonate solution. After dissolving, the solution was acidified with acetic acid until no solid was precipitated. The filter cake was filtered with water and washed until neutral. The filter cake was dried in a vacuum oven at about 100° C. for 24 hours to obtain 5.8 g of a khaki solid with a yield of 89%.

[0040] Take 2g (7.4mmol) of azoisophthalic acid in a 50mL round bottom flask, add 20mL (275mmol) of thionyl chloride and 15mmol of pyridine...

Embodiment 2

[0042] The method is as in Example 1, changing m-nitrobenzoic acid into p-nitrobenzoic acid, and the quality and proportion of the input materials are unchanged, and the rose red needle-shaped crystals are obtained, which is azoterephthaloyl chloride, and the yield is 75%. %.

Embodiment 3

[0044] The method is as in Example 1, changing m-nitrobenzoic acid to 3-methyl-4-nitrobenzoic acid, and the molar number of input materials remains unchanged to obtain brown needle-like crystals, namely 2,2'-dimethyl-4-nitrobenzoic acid. 4,4'-Azophthaloyl dichloride, the yield is 73%.

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Abstract

The invention discloses a polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and a preparing method of the polyarylester liquid crystal material, belonging to the filed of functional polymer materials. The method comprises: reacting azobenzene diacyl chloride with different substituent groups with parahydroxydiphenylamine to prepare an azo ester monomer, then performing oxidative coupling polymerization on the azo ester monomer and p-phenylenediamine to prepare oxidation azo polyarylester liquid crystal material, and through reducing of hydrazine hydrate and ammonium hydroxide, obtaining the polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments. The polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments has good solubleness and thermal stability, has electrochemical activity similar to an aniline oligomer and photoinduced isomerism of an azo polymer, and can produce lyotropic liquid crystal in organic solvents such as N,N-dimethylacetamide and dimethylsulfoxide. The material has good application potential in aspects of biosensors, optical elements and electromagnetic materials, and the like.

Description

technical field [0001] The invention relates to a method for preparing a photoelectrically active polyarylate liquid crystal material containing azo and aniline segments, belonging to the field of functional polymer materials. Background technique [0002] In recent years, with the continuous advancement of science and technology and the improvement of people's living standards, the society's demand for multifunctional materials is also expanding. Polyarylate is an engineering plastic with good heat resistance, weather resistance, impact resistance and flame retardancy. At the same time, it has excellent mechanical and electrical properties, is easy to process, and is resistant to general organic chemicals but not to sulfuric acid and alkali. Aerospace, microelectronics, energy and other high-tech fields have been widely used. [0003] Among conductive polymers, polyaniline has the advantages of high electrical conductivity, good environmental stability, simple synthesis pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C09K19/38
CPCC08G73/0266C09K19/0233C09K19/3809
Inventor 牛永生杜倩郁有祝邱明艳郭玉华石蔚云苏文辉
Owner ANYANG INST OF TECH
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