A kind of polyaromatic ester containing phenothiazine and its preparation method and application

A polyarylester and phenothiazine technology, applied in the field of polyarylester and its preparation, can solve the problems of poor thermal stability, low polyester solubility, difficult to process into a film, etc., and achieve good high temperature resistance and high thermal stability. Effect

Inactive Publication Date: 2016-08-24
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problems of low solubility of existing polyesters in organic solvents, difficult processing into films and poor thermal stability, and provides a polyarylate containing phenothiazine and its preparation method and application

Method used

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  • A kind of polyaromatic ester containing phenothiazine and its preparation method and application
  • A kind of polyaromatic ester containing phenothiazine and its preparation method and application
  • A kind of polyaromatic ester containing phenothiazine and its preparation method and application

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specific Embodiment approach 1

[0059] Specific implementation mode one: the present implementation mode is a polyarylate containing phenothiazine whose structural formula is The Ar is The value range of n is 1≤n≤100, and n is an integer.

[0060] The advantage of this implementation mode:

[0061] 1. The phenothiazine-containing polyarylate prepared in this embodiment overcomes the disadvantage that polyarylate was difficult to dissolve in general organic solvents, while retaining its high thermal stability; the phenothiazine-containing polyarylate utilizes The external phenothiazine group reduces the degree of conjugation of the entire main chain to increase its solubility, making polyarylate soluble in most organic solvents; while the internal phenothiazine group has electron-rich sulfur and The nitrogen heterocyclic structure increases the distribution of the electron cloud, making the polymer prone to light absorption, and causes color changes after oxidation, and can undergo reversible changes ...

specific Embodiment approach 2

[0066] Specific embodiment two: this embodiment is a kind of preparation method of the polyarylate containing phenothiazine is finished according to the following steps:

[0067] One, synthetic N-(4-nitrophenyl) phenothiazine: NaH is dissolved in the organic solvent, obtains NaH solution; Add phenothiazine and p-fluoronitrobenzene in the NaH solution, then in nitrogen atmosphere and React at a temperature of 120°C to 140°C for 16h to 20h, then use distilled water to precipitate the reactant A, and then use absolute ethanol to recrystallize the reactant A to obtain N-(4-nitrophenyl)phenothiene Zinc;

[0068] The volume ratio of the mass of NaH described in step 1 to the organic solvent is (0.05g~0.2g): 10mL;

[0069] The mol ratio of phenothiazine described in step 1 and p-fluoronitrobenzene is 1:1;

[0070] The volume ratio of the amount of the substance of the phenothiazine described in step 1 to the organic solvent is (0.1mol~0.5mol): 150mL;

[0071] 2. Synthesis of N-(4-...

specific Embodiment approach 3

[0096] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the monomer containing dihydroxy described in step five ② is Others are the same as in the second embodiment.

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Abstract

The invention relates to a polyaromatic ester, and a preparation method and application thereof, particularly a phenothiazine-containing polyaromatic ester, and a preparation method and application thereof. The invention aims to solve the problems of low solubility in organic solvents, difficulty in film formation and poor heat stability in the existing polyester. The structural formula of the phenothiazine-containing polyaromatic ester is disclosed in the specification. The preparation method comprises the following steps: 1. synthesizing N-(4-nitrophenyl)phenothiazine; 2. synthesizing N-(4-amidophenyl)phenothiazine; 3. preparing 4,4'-dicyano-4'-N-phenothiazine triphenylamine; 4. synthesizing 4,4'-dicarboxylic acid-4'-N-phenothiazine triphenylamine; and 5. synthesizing the phenothiazine-containing polyaromatic ester. The phenothiazine-containing polyaromatic ester is applicable in electrochromic, photochromic, hole transmission materials or display materials as an off-color material. The preparation method can obtain the phenothiazine-containing polyaromatic ester.

Description

technical field [0001] The invention relates to a polyarylate and its preparation method and application. Background technique [0002] Phenothiazine is a well-known heterocyclic compound because of its internal electron-rich sulfur and nitrogen heterocycles. Small organic molecules and polymers containing phenothiazine have also attracted much attention because of their reversible redox properties, mainly in the fields of organic light-emitting diodes, photovoltaic devices, and chemiluminescence. The reason why it is so attractive is because of the unique optoelectronic properties of phenothiazine. When intramolecular or intermolecular electrons are transported through phenothiazine, absorption peaks will be generated in the near-infrared region due to the excitation of central mixed valence electrons. In addition, phenothiazine has a planar structure different from that of diphenylamine, so it can further protect triphenylamine and make it have better thermal stability. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/688C08G63/78G02F1/155
Inventor 牛海军马晓川蔡万安肖田地
Owner HEILONGJIANG UNIV
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