Titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film as well as preparation method and application of titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film

A technology of naphthalene triphenylamine and titanium dioxide, which is applied in the field of titanium dioxide/polyhexaazanaphthalene triphenylamine core-shell structure composite film and its preparation field, can solve the problem that the performance of single-layer electrochromic film can not meet the requirements, polyhexaazapine Naphthalene triphenylamine has problems such as poor stability and limited application of electrochromic materials to achieve excellent electrochromic performance, low cost and simple operation.

Active Publication Date: 2020-04-28
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyhexaazyridine triphenylamine (PTPA-HATN) has limited its application in electrochromic materials due to its poor stability and slow response
In practical applications, electrochromic materials should not only have the properties of multi-color display, high optical contrast, good processability, and flexible display, but also need to meet the requirements of fast response and high stability, but single-layer electrochromic films Often the performance cannot meet the demand

Method used

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  • Titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film as well as preparation method and application of titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film
  • Titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film as well as preparation method and application of titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film
  • Titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film as well as preparation method and application of titanium dioxide/polyhexaaza-naphthalene triphenylamine core-shell structure composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Clean the FTO conductive glass substrate in an ultrasonic instrument, and dry it with nitrogen gas for later use. Measure 100ml of deionized water and 100ml of concentrated hydrochloric acid into a 250ml clean Erlenmeyer flask and stir for 10 minutes, then add 2.5ml of tetrabutyl titanate and stir for 15 minutes. After the solution is clear, transfer it to the lining of a polytetrafluoroethylene reactor , and then put the FTO conductive glass into the lining. Finally, put the lining in a stainless steel reaction kettle, put it in an oven at 150°C, and heat it for 3 hours. After the reaction, cool down to room temperature naturally, transfer the FTO, rinse the surface with deionized water and absolute ethanol, and dry it in an oven at 60°C for 2 hours to obtain FTO / TiO 2 electrode. The microscopic morphology of the surface was examined by scanning electron microscopy, such as figure 1 shown.

Embodiment 2

[0047] (1) In the three-electrode system electrolytic cell system, TPA-HATN (10.24mg, 0.0006mmol) was used as the monomer, tetra-n-butylammonium perchlorate (0.8548g, 0.0025mol) was used as the supporting electrolyte, and dichloro Methane (25mL) is electrolytic solvent, is mixed with monomer concentration 40mmol / L, the mixed solution 25mL of supporting electrolyte concentration 0.1mol / L, with the FTO / TiO in embodiment 1 2 The electrode is the working electrode, the platinum electrode is the auxiliary electrode, the silver / silver chloride electrode is the reference electrode, the saturated potassium chloride aqueous solution is the first liquid junction, and the electrolytic solution of the present invention is the second liquid junction. . At room temperature, use cyclic voltammetry -1.1 ~ 1.4V to carry out electrochemical polymerization reaction, the number of polymerization circles is 4 circles, and FTO / TiO 2 The orange-red polymer film on the working electrode was rinsed w...

Embodiment 3

[0050] (1) In the three-electrode system electrolytic cell system, TPA-HATN (10.24mg, 0.0006mmol) was used as the monomer, tetra-n-butylammonium perchlorate (0.8548g, 0.0025mol) was used as the supporting electrolyte, and dichloro Methane (25mL) is electrolytic solvent, is mixed with monomer concentration 40mmol / L, the mixed solution 25mL of supporting electrolyte concentration 0.1mol / L, with the FTO / TiO in embodiment 1 2 The electrode is the working electrode, the platinum electrode is the auxiliary electrode, the silver / silver chloride electrode is the reference electrode, the saturated potassium chloride aqueous solution is the first liquid junction, and the electrolytic solution of the present invention is the second liquid junction. . At room temperature, use cyclic voltammetry -1.1 ~ 1.4V to carry out electrochemical polymerization reaction, the number of polymerization circles is 4 circles, and FTO / TiO 2 The orange-red polymer film on the working electrode was rinsed w...

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Abstract

The invention discloses a titanium dioxide/polyhexaazanaphthalene triphenylamine core-shell structure composite film as well as a preparation method and application of the titanium dioxide/polyhexaazanaphthalene triphenylamine core-shell structure composite film. The method comprises the following steps: mixing deionized water and 37 wt% concentrated hydrochloric acid, adding tetrabutyl titanate,dipping fluorine-doped tin oxide conductive glass into the mixed solution, putting the mixed solution into a stainless steel reaction kettle, putting the stainless steel reaction kettle into an electric oven at 120-180 DEG C, and completely reacting to obtain a fluorine-doped tin oxide conductive glass/titanium dioxide electrode; in a three-electrode electrolytic tank system, taking the fluorine-doped tin oxide conductive glass/titanium dioxide electrode as a working electrode, a gold electrode or a platinum electrode as an auxiliary electrode and a silver/silver chloride electrode as a reference electrode, carrying out an electrochemical polymerization reaction at room temperature under the condition of a voltage of -2V to 2V by adopting a cyclic voltammetry to obtain the titanium dioxide/polyhexaazanaphthalene triphenylamine core-shell structure composite film. The preparation method disclosed by the invention is relatively low in cost, simple to operate, green and environment-friendly, and the composite film has excellent electrochromic performance.

Description

technical field [0001] The invention relates to a titanium dioxide / polyhexaazyridine triphenylamine core-shell structure composite film and a preparation method thereof. The composite film prepared by the method can be applied to electrochromic devices. Background technique [0002] Electrochromic (EC) can be divided into inorganic EC materials and organic EC materials according to different materials; inorganic electrochromic materials mainly include WO 3 、TiO 2 , NiO, etc. have good photochemical stability, but the color of inorganic electrochromic materials is single and the color changing speed is slow; compared with inorganic electrochromic materials, organic electrochromic materials have the characteristics of easy structure modification, various types and high optical contrast. Favored by people. However, the poor stability of organic electrochromic materials hinders its application in real life. There have been many reports in the literature that the electrochromi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08G73/02C08K3/22C08J5/18G02F1/1516G02F1/1524G02F1/153G02F1/155
CPCC08J5/18C08G73/0266G02F1/155G02F1/15165G02F1/1524G02F1/1533C08J2379/02C08K2003/2241
Inventor 欧阳密胡旭明徐宁李维军张诚
Owner ZHEJIANG UNIV OF TECH
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