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A kind of polyurethane containing carbazole group and preparation method thereof

A polyurethane and carbazole-based technology, applied in the field of polyurethane and its preparation, can solve the problems of poor processability, low solubility, low photochromic response sensitivity, etc., and achieve the effects of good high temperature resistance and good electrochromic performance.

Inactive Publication Date: 2017-05-31
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low solubility of existing polyurethane in organic solvents, poor processability and low photochromic response sensitivity, and provide a polyurethane containing carbazole group and its preparation method

Method used

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  • A kind of polyurethane containing carbazole group and preparation method thereof
  • A kind of polyurethane containing carbazole group and preparation method thereof
  • A kind of polyurethane containing carbazole group and preparation method thereof

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specific Embodiment approach 1

[0066] Specific embodiment one: the present embodiment is a structural formula of polyurethane containing carbazole group: Wherein, described Ar is: The R is: The value range of n is 1≤n≤100, and n is an integer.

[0067] The advantage of this implementation mode:

[0068] 1. The carbazole-based polyurethane prepared in this embodiment overcomes the disadvantage that polyurethane is difficult to dissolve in general organic solvents in the past. The carbazole-containing polyurethane uses the introduction of carbazole-containing large groups to improve the solubility of the entire polymer, so that The carbazole-based polyurethane is soluble in most organic solvents; at the same time, the CO-NH structure formed by the carbazole-based polyurethane is connected to the benzene ring, and the color changes after oxidation, and can undergo reversible changes accompanied by reversible colors Variety;

[0069] 2. The weight loss of the carbazole group-containing polyurethane pre...

specific Embodiment approach 2

[0072] Specific implementation mode two: the present implementation mode is a kind of preparation method of the polyurethane containing carbazole group is specifically finished according to the following steps:

[0073] 1. Synthesis of monoamine monomer:

[0074] ①. Under a nitrogen atmosphere, dissolve carbazole in anhydrous dimethyl sulfoxide, then add p-fluoronitrobenzene and sodium hydride, then heat and reflux at a temperature of 150°C to 160°C for 36h to 48h, and then use Distilled water at a temperature of 0°C to 5°C precipitates the product A, and then uses acetonitrile to recrystallize the product A, and then dries at a temperature of 40°C to 50°C for 10h to 12h to obtain a triphenylamine nitro compound;

[0075] The volume ratio of the mass of carbazole described in step 1. to anhydrous dimethyl sulfoxide is (0.1g~0.5g): 10mL;

[0076] Step 1. The mol ratio of carbazole and p-fluoronitrobenzene described in 1. is 1:1;

[0077] Step 1. The mass ratio of carbazole an...

specific Embodiment approach 3

[0106] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the structure of the isocyanate monomer obtained in step three is Others are the same as in the second embodiment.

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Abstract

The invention discloses carbazolyl-containing polyurethane, as well as a preparation method and application thereof, relates to polyurethane, as well as a preparation method and application thereof, and aims to solve the problems of low solubility of conventional polyurethane in an organic solvent, poor processibility and low photoelectrochromism response sensitivity. The structural formula of the carbazolyl-containing polyurethane is shown in the original document, where Ar is shown in the original document, R is shown in the original document, and n is more than or equal to 1 and less than or equal to 100, and is an integer. The preparation method comprises the following steps of 1, synthesizing monoamine monomers; 2, synthesizing tertiary aromatic amine monomers; 3, synthesizing isocyanate monomers; 4, synthesizing the carbazolyl-containing polyurethane. The carbazolyl-containing polyurethane can be obtained.

Description

technical field [0001] The invention relates to a polyurethane and a preparation method thereof. Background technique [0002] Carbazole is a well-known hole-transporting and electroluminescent unit. Due to their excellent optoelectronic properties such as photoconductivity, electroluminescence, and photochromism, the introduction of carbazole groups into the main chain or side chain of polymers has received great attention. In electrochromism, carbazole derivatives are commonly used materials for hole transport materials and emissive layers. In addition, from the structural point of view, carbazole has a different planar structure of diphenylamine, and the multi-chain alkyl group at the 9-substituted position can also increase its solubility, so it can further improve the conjugation performance and electron transport performance of triphenylamine. [0003] The unique microphase separation structure of polyurethane makes it have good elasticity and mechanical strength, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/78C08G18/32C09K9/02
CPCC08G18/3212C08G18/3215C08G18/7881C09K9/02
Inventor 牛海军纪艳张春雨浦丽莉秦川丽白续铎
Owner HEILONGJIANG UNIV
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