Aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, preparation method, component and application

A propylene dioxythiophene, electrochromic material technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of large environmental pollution, high production cost, high price, etc., and achieve high optical contrast and oxidation state transparency. , the effect of short response time

Inactive Publication Date: 2018-03-09
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the toxicity and high price of organic solvents, the operation process still has

Method used

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  • Aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, preparation method, component and application
  • Aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, preparation method, component and application
  • Aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, preparation method, component and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 Propylenedioxythiophene polymer blue-transparent electrochromic film

[0037] A kind of preparation method of propylene dioxythiophene polymer blue-transparent electrochromic film is:

[0038] Step 1. Add 35mmol 3,4-dimethoxythiophene, 70mmol dibromoneopentyl glycol, 3.5mmol p-toluenesulfonic acid and 300mL toluene to the flask connected to the Soxhlet extractor containing molecular sieve, and heat to reflux Overnight, then cooled to room temperature, washed with water, the organic phase was dried with anhydrous sodium sulfate, and then the solvent was removed by rotary evaporation. The resulting crude product was subjected to column chromatography to obtain compound 1, with a yield of 60%;

[0039] Step 2. Add 16mmol of compound 1, 32mmol of diethyl malonate, and 64mmol of sodium ethoxide into the flask connected with a reflux condenser at the top, heat to reflux for 8h, then cool to room temperature, add an appropriate amount of water, extract several tim...

Embodiment 2

[0045]Example 2 Propylenedioxythiophene polymer blue-transparent electrochromic film (PProDOTCB-Acid) cyclic voltammetry experiment

[0046] The thin film that embodiment 1 is made carries out cyclic voltammetry test, and cyclic voltammetric test condition: adopt three-electrode electrolytic cell, Pt wire is counter electrode, and Ag wire is reference electrode, the polymer thin film (2cm × 0.7cm) ITO conductive glass is the working electrode, the scanning voltage range is -0.15V-0.5V, and the scanning rates are 50mV / s, 100mV / s, 150mV / s, 200mV / s; support electrolyte configuration: 0.1mol / L high Lithium chlorate (LiClO 4 ) was dissolved in 10 mL of propylene carbonate (PC). see test results image 3 , indicating that when the scanning rate is 50mV / s, the oxidation peak potential of the polymer is 0.25V, and the reduction peak potential is 0.05V, and the polymer can complete the redox process within the scanning voltage range of -0.15V-0.5V.

Embodiment 3

[0047] Example 3 Spectroelectrochemical performance test of propylenedioxythiophene polymer blue-transparent electrochromic film (PProDOTCB-Acid) under different applied voltages

[0048] Experimental conditions: supporting electrolyte configuration: 0.1mol / L lithium perchlorate (LiClO 4 ) was dissolved in 10 mL of propylene carbonate (PC). Adopt three-electrode electrolytic cell, Pt silk is counter electrode, and Ag silk is reference electrode, and the polymer film (2cm * 0.7cm) ITO conductive glass that embodiment 1 prepares is working electrode, test result sees Figure 4 . It shows that the neutral state polymer film (-0.15V) is blue, and the maximum absorption wavelength is 580nm, and the fully oxidized state (0.5V) of the polymer is a transparent state, and there is basically no absorption in the visible light region.

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Abstract

The invention discloses a novel aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, a preparation method thereof, a component and an application. The electrochromic material can be sprayed to the surface of ITO (indium tin oxide) glass in an aqueous solution form, and then acid treatment is performed to form a film. The electrochromic material is low in driving voltage, transparent in oxidation state, high in contrast, short in response time and applicable to electrochromic devices such as an intelligent window and a display. The material issubsidized by an Anhui university natural science research project (KJ2017A482, KJ2016JD16), an Anhui university excellent youth talent support planned project (gxyq2017023), an advanced building material Anhui key laboratory open topic (JZCL201602ZZ) and a university student innovation business startup training planned project.

Description

technical field [0001] The invention relates to a synthesis and film-forming method of an electrochromic material, in particular to a blue-transparent electrochromic material that can be sprayed with an aqueous solution, a preparation method, a component and an application. Background technique [0002] Under the action of alternating high and low or positive and negative external electric fields, the material undergoes redox reaction by injecting or extracting charges, so that the special phenomenon of reversible change between the colored state with low transmittance and the achromatic state with high transmittance is called Electrochromism, which shows reversible changes in color and transparency in appearance, has broad application prospects in the fields of electrochromic windows and electrochromic displays. Compared with inorganic electrochromic materials represented by transition metal oxides, organic electrochromic materials such as polyaniline, polypyrrole, polythio...

Claims

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Application Information

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IPC IPC(8): C08G61/12G02F1/15
CPCC08G61/126C08G2261/11C08G2261/142C08G2261/3243C08G2261/54C08G2261/94G02F1/15G02F1/15165
Inventor 陈晓明
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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