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Thiophene polymer film as well as preparation method and application thereof

A polymer film, polymer technology, used in chemical instruments and methods, color-changing fluorescent materials, etc.

Active Publication Date: 2021-06-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the singleness of PEDOT's color change has become a key factor restricting its application in the field of electrochromism.

Method used

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  • Thiophene polymer film as well as preparation method and application thereof
  • Thiophene polymer film as well as preparation method and application thereof
  • Thiophene polymer film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] Preparation of E2SBFE2 monomer:

[0025] (1) Add 20 grams of 3,4-ethylenedioxythiophene to 500 milliliters of ultra-dry dichloromethane under a nitrogen atmosphere, and place it at 0°C, and add 70 milliliters of 2.4 mol / L of n-butyllithium n-hexane solution, continue to stir for 1 hour, then add 50 grams of tributyltin chloride dropwise therein, and after stirring for 1 hour, take it out from the 0°C environment and place it at room temperature to continue stirring for 12 Hour. Add 600mL of dichloromethane and 600mL saturated sodium chloride solution to the obtained 600mL solution after the reaction, extract 3 times, combine the obtained organic phases, add 20g of anhydrous sodium sulfate therein and stir for 30 minutes to dry, and then extract Filter to remove sodium sulfate therein, add 40g of silica gel powder to the dried organic phase and remove the organic solution using a rotary evaporator, the resulting crude product is separated and purified by chromatographi...

Embodiment 1

[0030] Dissolve 0.2g of E2SBFE2 and 0.4g of supporting electrolyte tetrabutylammonium hexafluorophosphate in 100ml of chromatographic grade methylene chloride to obtain the required electrolyte for electrochemical polymerization. Electrochemical polymerization adopts a three-electrode system, with indium tin oxide glass (ITO) as the working electrode, platinum sheet as the counter electrode, and silver / silver chloride as the reference electrode. Polymerization was carried out at room temperature with a constant potential method at a voltage of 1.4V and an electric quantity of 0.05C. After the polymerization was completed, the electrolyte solution was replaced with a 4.0 g / L tetrabutylammonium hexafluorophosphate dichloromethane solution, and a constant potential method was used to dedope at -0.2 V for 60 s to obtain a P(E2SBFE2) film.

[0031] The P (E2SBFE2) thin film that is loaded on the ITO glass that embodiment 1 prepares is carried out scanning electron microscope analys...

Embodiment 2

[0039] Dissolve 0.2g of E2SBFE2 and 0.4g of supporting electrolyte tetrabutylammonium hexafluorophosphate in 100ml of electrolytic solvent chromatographic grade methylene chloride to obtain the electrolytic solution required for electrochemical polymerization. Electrochemical polymerization adopts a three-electrode system, with indium tin oxide glass (ITO) as the working electrode, platinum sheet as the counter electrode, and silver / silver chloride as the reference electrode. Polymerization was carried out by cyclic voltammetry at room temperature, with forward scanning from 0V to 1.4V, the scanning speed was 100mV / s, and the number of scanning cycles was 5 cycles. After scanning, the electrolyte was replaced with 4.0g / L tetrabutylammonium hexafluorophosphate chromatographic grade dichloromethane solution, and the constant potential method was used to dedope at -0.2V for 60s to obtain a P(E2SBFE2) film.

[0040] The P (E2SBFE2) thin film that the load of embodiment 2 is prepar...

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Abstract

The invention provides a thiophene polymer film and application thereof in preparation of an electrochromic material. The thiophene polymer film is composed of a polymer (P(E2SBFE2)) as shown in a formula 1. Compared with a PEDOT thin film, the P(EDOT2-SBF-EDOT2) thin film has richer color change in the voltage range of 0-0.5 V. When the voltage is 0 V, the P(EDOT2-SBF-EDOT2) thin film is cyan, and when the voltage is 0.5 V, the P(EDOT2-SBF-EDOT2) thin film is red.

Description

technical field [0001] The invention relates to a new thiophene polymer film, its preparation method and its application in the field of electrochromism. Background technique [0002] Thiophene polymer Poly3,4-ethylenedioxythiophene (PEDOT) is a conductive polymer material with good electrical conductivity and high stability, and is widely used in the field of optoelectronics. The color of PEDOT can change from dark blue (-0.5V) to light blue (0.8V) under different voltages, so it can be applied to electrochromic smart windows, electrochromic automotive anti-glare rearview mirrors and other products. However, the singleness of PEDOT's color change has become a key factor restricting its application in the field of electrochromism. Therefore, designing new thiophene polymers with different electrochromic properties from PEDOT has broad research and application prospects. Contents of the invention [0003] In order to solve the above problems, the present invention provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C09K9/02
CPCC08G61/126C09K9/02C08G2261/11C08G2261/3223C08G2261/3142C08G2261/54C09K2211/1441C09K2211/1416
Inventor 张诚沈熠瑶吕耀康
Owner ZHEJIANG UNIV OF TECH
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