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Thermoelectric double-response intelligent color-changing device and preparation method thereof

A color-changing device and dual-response technology, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of single synthetic color-changing mechanism and difficulty in realizing independent control of multiple colors, so as to avoid mutual influence and achieve the goal of color and performance Precise control and various color effects

Pending Publication Date: 2022-03-04
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a thermoelectric dual-response intelligent color-changing device and its preparation method, aiming to solve the problem that the synthetic color-changing mechanism of the existing electrochromic device is single, and it is impossible to avoid the gap between various electrochromic materials. It is difficult to realize the independent regulation of multiple colors due to the mutual influence between them.

Method used

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  • Thermoelectric double-response intelligent color-changing device and preparation method thereof
  • Thermoelectric double-response intelligent color-changing device and preparation method thereof
  • Thermoelectric double-response intelligent color-changing device and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0066] 1. Preparation method of thermochromic electrolyte:

[0067] Phenolphthalein heat-induced acid electrolyte: Dissolve 0.045g phenolphthalein in 10g N,N-dimethylformamide (DMF) to prepare a 0.45% dye / DMF solution; 4g polyvinyl alcohol (PVA-1799, alcoholysis degree 98 -99mol%) heated and dissolved in 96g water to prepare 4% PVA-1799 aqueous solution; take 10mL PVA-1799 aqueous solution, add 0.53g LiClO 4 and 1.21g of tris (TRIS), stirred until dissolved, then added 0.6mL of phenolphthalein / DMF solution, and mixed uniformly; added dropwise 250uL of 1mol / L aqueous HCl solution to the above solution, and adjusted the pH of the system to 8.8 to obtain Thermochromic electrolyte (phenolphthalein thermoacid electrolyte).

[0068] 2. Preparation of PEDOT electrochromic film: 3,4-ethylenedioxythiophene (EDOT) and tetrabutylammonium hexafluorophosphate (TBAPF 6 ) is dissolved in acetonitrile (ACN) to prepare a precursor solution, the concentration of EDOT in the precursor solution...

Embodiment 2

[0071] 1. Preparation method of thermochromic electrolyte:

[0072] Thymol blue thermal acid electrolyte: Dissolve 0.0225g phenolphthalein in 10g N,N-dimethylformamide (DMF) to prepare a 0.225% dye / DMF solution; 4g polyvinyl alcohol (PVA-1799, alcoholysis 98-99mol%) heated and dissolved in 96g water to prepare 4% PVA-1799 aqueous solution; take 10mL PVA-1799 aqueous solution, add 0.53g LiClO 4 and 1.21g trishydroxymethylaminomethane (TRIS), stir until dissolved, then add 0.6mL thymol blue / DMF solution, mix well; add dropwise 200uL 1mol / L HCl aqueous solution to the above solution, adjust the pH of the system to 9.1 , to obtain a thermochromic electrolyte (thymol blue thermoacid electrolyte).

[0073] 2. Preparation of poly-3-hexylthiophene (P3HT) electrochromic film: Dissolve P3HT in chlorobenzene to make a clear solution of 1 mg / mL; spray on the cleaned ITO glass surface to form a uniform color film.

[0074] 3. Performance characterization of thermoelectric dual response: ...

Embodiment 3

[0076] 1. Preparation method of thermochromic electrolyte:

[0077] Phenolphthalein thermal alkaline electrolyte: 0.045g phenolphthalein was dissolved in 10g N,N-dimethylformamide (DMF) to prepare 0.45% phenolphthalein / DMF solution; 2g polyvinyl alcohol (PVA, degree of alcoholysis 98-99mol %, viscosity 3.2-3.8mPa·s) heated and dissolved in 98g water to prepare 2% PVA aqueous solution; take 10mL PVA aqueous solution, add 0.2g borax (Na 2 B 4 o 7 10H 2 0), heating and stirring until completely dissolved; adding 0.06g NaCl and 0.6mL dye / DMF solution to the above solution, and by dripping 1mol / L aqueous HCl solution, adjusting system pH to 8-8.5, obtaining thermochromic electrolyte ( Phenolphthalein thermally alkaline electrolyte).

[0078] 2. Preparation of PEDOT electrochromic film: 3,4-ethylenedioxythiophene (EDOT) and tetrabutylammonium hexafluorophosphate (TBAPF 6 ) is dissolved in acetonitrile (ACN) to prepare a precursor solution, the concentration of EDOT in the precu...

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Abstract

The invention discloses a thermoelectric double-response intelligent color-changing device and a preparation method thereof, and the thermoelectric double-response intelligent color-changing device comprises a working electrode, a counter electrode, and a thermochromic electrolyte layer disposed between the working electrode and the counter electrode. One side, close to the thermochromic electrolyte layer, of the working electrode is coated with an electrochromic film; the thermochromic electrolyte comprises a pH value sensitive dye, a thermosensitive hydrogel and an electrolyte salt, and the thermosensitive hydrogel is a thermotropic acid hydrogel or a thermotropic alkali hydrogel. According to the invention, the relatively independent thermochromic electrolyte layer is arranged and compounded with the electrochromic film to form the efficient and multicolor thermoelectric double-response intelligent color-changing device, so that the color change of the color-changing device is enriched, the change of different colors is controlled through different stimuli, the mutual influence of various color-changing materials in the intelligent color-changing device is reduced, and the color-changing effect of the intelligent color-changing device is improved. And accurate regulation and control of color and performance in the intelligent color-changing device are facilitated.

Description

technical field [0001] The invention relates to the field of intelligent color-changing devices, in particular to a thermoelectric dual-response intelligent color-changing device and a preparation method thereof. Background technique [0002] Smart color-changing devices can adjust their own color and optical properties in response to external stimuli, and are widely used in smart windows, displays, sensors, optical communications, information storage and other fields, and have strong social and economic value. [0003] According to different external stimuli, smart color-changing materials mainly include four types: thermochromic, electrochromic, photochromic and other color-changing, each of which has its own advantages and disadvantages. Due to the advantages of convenient control, low energy consumption, wide range of discoloration, and fast response, electrochromic materials are regarded as intelligent discoloration materials with the most potential for industrial appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1514G02F1/1516G02F1/1523G02F1/155
CPCG02F1/1514G02F1/15165G02F1/1523G02F1/155G02F1/1525G02F2001/1557
Inventor 王密孟鸿邢星张嘉恒
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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