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Poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and preparation method and application thereof

A technology of poly(p-phenylene) and biphenyl structure, which is applied in the field of preparation and application of poly(p-phenylene) derivatives containing biphenyl structure and cyano group, can solve the problem of less application of PPV materials, and achieve good Wetting ability, high thermal stability, effect of increasing solubility

Active Publication Date: 2019-04-05
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that existing PPV materials are rarely used in the field of photoelectric detection and display, and provides poly(p-phenylene) derivatives containing biphenyl structures and cyano groups, as well as their preparation methods and applications

Method used

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  • Poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and preparation method and application thereof
  • Poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and preparation method and application thereof
  • Poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and preparation method and application thereof

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specific Embodiment approach 1

[0031] Specific embodiment 1: In this embodiment, the structural formula of poly(p-phenylene) derivatives containing biphenyl structure and cyano group is as follows:

[0032] ,

[0033] In the formula, n is an integer of 3-10.

[0034] The beneficial effect of this implementation mode:

[0035] This embodiment greatly expands the application range of PPV materials. Poly(p-styrene) polymer materials with cyano groups containing long carbon chains have aroused great interest of scientific researchers due to their excellent heat resistance and mechanical properties. . Introducing biphenyl and long carbon chains with disruptive stacking properties into the poly(p-phenylene) structure can not only maintain the high thermal stability of the original poly(p-styrene), but also increase its solubility and enhance the film-forming ability, which not only It is conducive to the manufacture of large-area thin-film electrochromic devices, and also provides electroactive centers to fa...

specific Embodiment approach 2

[0037] Specific implementation mode two: the preparation method of poly(p-phenylene vinylene derivative) containing biphenyl structure and cyano group in this implementation mode is as follows:

[0038] 1. Synthesis of dialdehyde monomers containing biphenyl structure

[0039] Mix dicyanobiphenyl diamine and dehydrated toluene, vacuumize and ventilate nitrogen, then place in a low-temperature reaction kettle, cool down to -70 degrees Celsius, add reducing agent diisobutyl aluminum hydride, and stir for 10 minutes at -70 degrees Celsius , close the cooling valve, keep stirring until the temperature of the reaction system rises to room temperature, take out the reaction system and place it on a magnetic stirrer to continue stirring, then add acetone, ethyl acetate, and ammonia solution of ammonium chloride in sequence, and stir until the system appears to be clearly stratified , the upper layer is a clear liquid, and the lower layer has solid precipitation, the system is suction...

specific Embodiment approach 3

[0048] Specific embodiment three: this embodiment is different from specific embodiment two in that: in step one, vacuum pumping and nitrogen flow are repeated three times. Others are the same as in the second embodiment.

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Abstract

The invention relates to a poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and a preparation method and application thereof and provides the poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group and the preparation method and application thereof. a dialdehyde monomer containing biphenyl structure is synthesized herein; the poly(p-phenylene vinylene) derivative containing biphenyl structure and cyano group is prepared; the poly(p-phenylene vinylene) derivative may act as a photoelectric material applied to electrochromic materials, hole transport materials, anticounterfeiting materials and automotive rearview mirror materials, and may also be used for acidic and basic gas detection. The poly(p-phenylene vinylene) derivative is applicable to the field of photoelectric detection and displaying.

Description

technical field [0001] The invention relates to a poly(p-phenylene) derivative containing a biphenyl structure and a cyano group, a preparation method and an application thereof. Background technique [0002] Poly(p-phenylene vinylene) (PPV) is a kind of high-temperature-resistant polymer material with outstanding comprehensive properties. It has good chemical stability, excellent dielectric properties and radiation resistance, etc. It can be prepared into films, composite materials, insulating paints, Capacitor materials are widely used in aerospace, electroluminescence, sensors and other fields. Although poly(p-styrene) has excellent comprehensive properties, traditional PPV has some disadvantages, such as high processing difficulty, poor solubility, poor film-forming strength, poor flexibility and easy cracking, etc., which greatly limits the application of poly(p-styrene) in the industry. on the application. Therefore, we introduced alkoxy side chains on PPV to enhance...

Claims

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Application Information

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IPC IPC(8): C07C255/43C07C253/30C09K9/02C09K11/06G01N21/78
CPCC07C253/30C07C255/43C09K9/02C09K11/06C09K2211/1007C09K2211/1014G01N21/78
Inventor 牛海军牛春阳杨燕
Owner HEILONGJIANG UNIV
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