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Polymer with electrochromic and thermochromic properties as well as preparation method and application thereof

A thermochromic and electrochromic technology, applied in the field of color-changing materials, can solve the problem of not having both electrochromic and thermochromic properties

Pending Publication Date: 2022-04-12
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a polymer with both electrochromic and thermochromic properties and its preparation method and application, aiming at solving the problem of the lack of both electrochromic and thermochromic properties in the prior art. The problem with materials with thermochromic properties

Method used

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  • Polymer with electrochromic and thermochromic properties as well as preparation method and application thereof
  • Polymer with electrochromic and thermochromic properties as well as preparation method and application thereof
  • Polymer with electrochromic and thermochromic properties as well as preparation method and application thereof

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preparation example Construction

[0053] The embodiment of the present invention also provides a method for preparing a polymer having both electrochromic and thermochromic properties, which includes the steps of:

[0054] S1, the substituted phthalic anhydride and 3-(N-R 1 , N-R 2 Substituted ammonia)-1-phenol is dissolved in the first organic solvent and reacted to obtain 2-(4'-(N-R 1 , N-R 2 Substituted amino)-2'-hydroxybenzoyl) substituted benzoic acid;

[0055] S2, 2-(4'-(N-R 1 , N-R 2 Substituted ammonia)-2'-hydroxybenzoyl) substituted benzoic acid, m-bromophenol, and sulfuric acid are mixed and then reacted to obtain an intermediate compound;

[0056] S3, dissolving the intermediate compound and 3-hydroxyphenylboronic acid in a second organic solvent to undergo a Suzuki coupling reaction to obtain a rhodamine structure derivative containing a hydroxyl group;

[0057] S4. Dissolving rhodamine structural derivatives and 2-bromomethyl-3,4-ethylenedioxythiophene in a third organic solvent, and reactin...

Embodiment 1

[0084] Synthesis of polymer A-1-1 containing rhodamine structural units and phenyl groups substituted with alkoxyalkyl chains on 3,4-ethylenedioxythiophene (EDOT).

[0085] Its synthetic reaction formula is as follows:

[0086]

[0087] The preparation steps of polymer A-1-1 corresponding to the above synthetic reaction formula are as follows:

[0088] ((1-1), (1-2), (1-3) etc. behind the reactant in the following steps correspond to the structural formula in the above-mentioned synthetic reaction formula, and the same applies to Embodiment 2-25)

[0089] (1) Dissolve 74.0g (0.5mol) of phthalic anhydride (1-1) and 68g (0.5mol) of 3-dimethylaminophenol (1-2) in 1000mL of toluene, and react at 110°C under nitrogen After 4 hours, 180 mL of 10 mol / L sodium hydroxide solution was added dropwise, and heated at 100°C for 7 hours. After the reaction, the reaction mixture was poured into ice water, neutralized with hydrochloric acid, extracted with chloroform, the organic phases w...

Embodiment 2

[0096] Synthesis of Polymer A-2-1 Containing Rhodamine Structural Units and Naphthyl in Branched Chains of 3,4-Ethylenedioxythiophene (EDOT)

[0097] The synthetic reaction formula of compound (1-10) is with embodiment 1, and the different reaction formula of embodiment 1 is as follows:

[0098]

[0099] The preparation steps of polymer A-2-1 are as follows:

[0100] The preparation steps of compound (1-10) are the same as those in Example 1, and will not be repeated here.

[0101] 11.7g (10mmol) of compound (1-10) and 2.8g (10mmol) of 2,6-dibromonaphthalene (2-1) were dissolved in 100mL of dry toluene, degassed with nitrogen for 20 minutes, and added 0.22g (0.2 mmol) tetrakistriphenylphosphinepalladium, stirred at 110°C for 24h, cooled to room temperature, poured into a large amount of methanol, and filtered. The filter cake was extracted with methanol, acetone, normal hexane, and chloroform Soxhlet, and the chloroform layer was concentrated to obtain 6.3 g of 3,4-ethyle...

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Abstract

The invention discloses a polymer with electrochromism and thermochromism performance and a preparation method and application thereof, the structural formula of the polymer is shown in the specification, A is selected from aryl or substituted aryl, R1 and R2 are respectively and independently alkyl or aryl, R3, R4, R5 and R6 are respectively and independently selected from one of H, alkyl, aryl, substituted aryl, halogen, nitro, cyano, ester group and aldehyde group, m, m, m, m, m, m and m are respectively selected from one of H, alkyl, aryl, substituted aryl, halogen, nitro, cyano, ester group and aldehyde group, and the structural formula of the polymer is shown in the specification. And n is an integer in the range of 1 to 20. The polymer has electrochromic and thermochromic properties, and can be applied to the field of intelligent windows.

Description

technical field [0001] The invention relates to the field of color-changing materials, in particular to a polymer having both electrochromic and thermochromic properties, a preparation method and application thereof. Background technique [0002] Electrochromic material refers to a material whose optical properties undergo reversible and persistent changes under the drive of an external voltage, and its appearance shows a color change. Electrochromic materials can produce stable and reversible optical changes in active response to an external electric field. They are used in building and automotive window glass, which can sensitively regulate the internal temperature and light intensity, and have the characteristics of energy saving and comfort. attention from academia and industry. [0003] Thermochromic materials refer to functional materials whose visible absorption spectrum changes when some compounds or mixtures are heated or cooled. It has the characteristic that its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C09K9/02
Inventor 孟鸿贺耀武
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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