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Conjugated polymer containing triphenylamine structure and tetraphenylethylene unit and its preparation method and application in electrochromic

A conjugated polymer, tetrastyrene technology, used in instruments, nonlinear optics, optics, etc., can solve problems such as poor stability of electrochromic materials, achieve good electrochromic properties, enhanced hole transport capacity, and extended Application-wide effects

Active Publication Date: 2021-03-26
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor stability of poly-Schiff base electrochromic materials, the present invention proposes a conjugated polymer containing triphenylamine structure and tetraphenylethylene unit, its preparation method and its application in electrochromic

Method used

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  • Conjugated polymer containing triphenylamine structure and tetraphenylethylene unit and its preparation method and application in electrochromic
  • Conjugated polymer containing triphenylamine structure and tetraphenylethylene unit and its preparation method and application in electrochromic
  • Conjugated polymer containing triphenylamine structure and tetraphenylethylene unit and its preparation method and application in electrochromic

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specific Embodiment approach 1

[0030] Embodiment 1: The structural formula of the conjugated polymer containing triphenylamine structure and tetraphenylethylene unit in this embodiment is:

[0031] In the formula, n is a positive integer.

[0032] The principles and beneficial effects of this embodiment are:

[0033] 1. The conjugated polymer containing triphenylamine structure and tetraphenylethylene unit in this embodiment belongs to the poly-Schiff base polymer material. Due to its heat resistance and electrical conductivity, it expands the application range of electrochromic materials . Compared with other conductive polymers, the conjugated polymer containing triphenylamine structure and tetraphenylethylene unit introduces heteroatom nitrogen containing unbonded electron pairs on the main conjugated chain, which makes the charge distribution and energy band of the polymer The characteristics have changed greatly, increasing the degree of delocalization of electrons in the molecule, and improving so...

specific Embodiment approach 2

[0037] Specific embodiment two: the preparation method of the conjugated polymer containing triphenylamine structure and tetraphenylethylene unit in this embodiment is specifically carried out according to the following steps:

[0038] 1. Synthesis of dibromotetraphenylethylene:

[0039] Add 4-bromobenzophenone, zinc powder and anhydrous tetrahydrofuran in sequence in the three-necked flask and stir evenly. After flushing with nitrogen three times, cool to -5~0°C; Add titanium tetrachloride dropwise through the constant pressure dropping funnel under the same conditions, and continue stirring for 30-40 minutes; after the system temperature naturally rises to room temperature, transfer the three-necked bottle to a constant temperature water bath, and heat the constant temperature water bath to 80-85°C And reflux for 22-24 hours, stop heating, and naturally cool to room temperature under nitrogen atmosphere; place the cooled reaction solution in 9%-10% potassium carbonate aqueou...

specific Embodiment approach 3

[0048] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the ratio of the amount of substances of 4-bromobenzophenone and zinc powder described in step one is 1: (1.9~2.1); 4-bromodiphenone The volume ratio of the substance amount of benzophenone to anhydrous tetrahydrofuran is 1mol:(5.15~5.25)L; the ratio of the substance quantity of 4-bromobenzophenone and titanium tetrachloride is 1:(0.98~1.01) ; Anhydrous tetrahydrofuran and potassium carbonate aqueous solution volume ratio of 1: (5 ~ 5.5). Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to an electrically conductive polymer containing triphenylamine structure and tetraphenyl ethylene unit, a preparation method thereof, and applications of the electrically conductive polymer in electrochromism. The electrically conductive polymer is capable of solving a problem in the prior art that the stability of poly Schiff base electrochromic materials is poor. The structure of the conjugated polymer is disclosed in the invention. According to the preparation method, dibromo tetraphenyl ethylene and (E)-4',4'''-(1, 2-diphenylethlene-1, 2-di-yl)bis([1, 1'-biphenyl]-4-formaldehyde) are synthesized successively, and at last, Mannich reaction is adopted to synthesize the electrically conductive polymer containing triphenylamine structure and tetraphenyl ethylene unit. The conjugated polymer can be applied in in electrochromic devices as an electrochromic layer. The conjugated polymer is high in heat stability, is stable in the air at room temperature under normalpressure, is suitable to be used in electrochromic devices, and is suitable to be used for preparing electrochromic materials.

Description

technical field [0001] The invention relates to a conjugated polymer containing a triphenylamine structure and a tetraphenylethylene unit, a preparation method and application thereof. Background technique [0002] In 2001, the Hong Kong University of Science and Technology discovered and reported for the first time a class of molecules with special luminescent behavior. These molecules emit no or very weak light in the dispersed state in solution, but emit strong light in the aggregated state. They named this phenomenon "Aggregation-Induced Emission (AIE)", and proved through a large number of experimental facts that the obstruction of intramolecular rotation in the aggregated state is the main reason for this phenomenon. The discovery of this class of molecules breaks the conventional understanding of light-emitting molecules that aggregation leads to fluorescence quenching (ACQ). In the past ten years, a large number of new AIE molecules have been synthesized and widely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/00G02F1/1516
Inventor 侯艳君丛中飞牛海军王淑红
Owner HEILONGJIANG UNIV
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