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Preparation method of electrochromic polyaniline derivative film in covalent bond with ITO (indium tin oxide)

An electrochromic and covalent bond technology, applied in the direction of coating, etc., can solve the problem that the adhesion force is not as strong as the covalent bond, and achieve the effect of easy to master the operation process, fast response speed and tight combination

Inactive Publication Date: 2015-04-01
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is simple and easy to operate, and the surface of the obtained film is smooth, which solves the problem of large-area uniform film formation. However, since the polyaniline and the gold surface are combined through non-covalent bonds, the adhesion has no covalent bonds. powerful

Method used

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  • Preparation method of electrochromic polyaniline derivative film in covalent bond with ITO (indium tin oxide)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of polyaniline film covalently bonded to ITO glass surface:

[0028] (1) Pretreatment of ITO glass substrate

[0029] The ITO glass substrate was ultrasonically cleaned in acetone, ethanol, and ultrapure water in sequence, and then soaked in a mixed solution of methanol and ultrapure water containing potassium carbonate for 30 min. The concentration of potassium carbonate was 0.5mol L -1 . After the ITO glass is washed with a large amount of ultrapure water, it is heated to 60°C in a solution with a volume ratio of 1:2:10 (28wt% ammonia water: 30wt% hydrogen peroxide: ultrapure water) and kept for 1 hour to make the surface of the ITO glass hydroxylated. . After rinsing with deionized water and drying, the surface hydroxylated ITO substrate was obtained.

[0030] (2) ITO glass surface modification

[0031] 50 ml of tetrahydrofuran was added to a 100 ml beaker, and the temperature was raised to 40°C. Add an appropriate amount of 4-aminobenzylphosphonic a...

Embodiment 2

[0037] Preparation of poly-o-methoxyaniline film covalently bonded to ITO substrate:

[0038] (1) Pretreatment of ITO glass substrate

[0039] The ITO glass substrate was ultrasonically cleaned in acetone, ethanol, and ultrapure water in sequence, and then soaked in a mixed solution of methanol and ultrapure water containing potassium carbonate for 30 min. The concentration of potassium carbonate was 0.5mol L -1 . After the ITO glass is washed with a large amount of ultrapure water, it is heated to 60°C in a solution with a volume ratio of 1:2:10 (28wt% ammonia water: 30wt% hydrogen peroxide: ultrapure water) and kept for 1 hour to make the surface of the ITO glass hydroxylated. . After rinsing with deionized water and drying, the surface hydroxylated ITO substrate was obtained.

[0040] (2) ITO glass surface modification

[0041] Add 50ml of toluene into a 100ml beaker, and control the temperature at 25°C. Add an appropriate amount of anilinomethyltriethoxysilane to the ...

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Abstract

The invention discloses a preparation method of an electrochromic polyaniline derivative film in covalent bond with ITO (indium tin oxide). In the invention, 4-aminobenzyl phosphonic acid, ammonium persulfate, aniline or substituted aniline easily reacting with ITO surface hydroxyl is used as a raw material. The method comprises the following steps: firstly performing cleaning and hydroxylation treatment on the surface of ITO glass; secondly, modifying the ITO glass with 4-aminobenzyl phosphonic acid so that a modifying agent is combined to the glass surface in a form of covalent bond; and finally, preparing the electrochromic polyaniline derivative film in covalent bond with ITO by a chemical oxidation method. The method disclosed by the invention is simple, the product composition is uniform and easy to control, and large-scale preparation can be realized. The obtained film has a flat surface and is closely combined with ITO glass, and the film does not drop due to strong adhesion. The method can be applied to the fields such as electrochromic devices, novel infrared emission devices and polymer electrodes.

Description

technical field [0001] The invention belongs to the technical field of film preparation, and in particular relates to a preparation method of an electrochromic polyaniline derivative film covalently bonded to ITO. Background technique [0002] Electrochromism means that under the action of an external electric field, the optical properties of materials (transmittance, reflectivity, absorptivity, emissivity, etc.) produce stable and reversible changes in the visible light wavelength range. As a new type of functional material that is green, energy-saving and low-carbon, electrochromic materials have very broad application prospects in the fields of smart windows, non-glare mirrors, information storage, displays, electron beam printing technology, sensors, and military camouflage. . [0003] Organic conductive polymer color-changing materials have attracted great attention due to their advantages such as designable compound structure, high purity, light material quality, low ...

Claims

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Application Information

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IPC IPC(8): C03C17/32
CPCC03C17/42C03C2217/70C03C2217/948C03C2218/11
Inventor 张文治吴新明
Owner XIAN TECHNOLOGICAL UNIV
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