Preparation method of MOFs-based colorful electrochromic intelligent display device

An intelligent display and color-changing technology, applied in chemical instruments and methods, color-changing fluorescent materials, instruments, etc., can solve the problems of non-compliance with high integration, intelligence, and single color change of inorganic materials, and achieve good ion storage capacity and Effects of electrochemical performance, low production cost, and high surface area

Active Publication Date: 2018-05-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the single color change of inorganic materials, multiple layers are required to be used to achieve colorfulness, which does not meet the development trend of highly integrated and intelligent

Method used

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  • Preparation method of MOFs-based colorful electrochromic intelligent display device
  • Preparation method of MOFs-based colorful electrochromic intelligent display device
  • Preparation method of MOFs-based colorful electrochromic intelligent display device

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Under the protection of nitrogen atmosphere, 1.5mmol of 1,4,5,8-naphthalene tetracarboxylic anhydride and 3.4mmol of 5-aminoisophthalic acid were dissolved in 50mL of toluene and refluxed at 150°C for 8h, filtered and dried. Recrystallization from DMF gave the naphthalene tetracarboxylic anhydride-based ligand as a pale yellow solid.

[0037] (2) 0.6 mmol of naphthalene tetracarboxylic anhydride-based ligands obtained in step (1) and 1 mmol of nickel nitrate hexahydrate are dissolved in a mixed solvent of 20 mL of DMF and 4 mL of water to obtain a mixed solution; the FTO glass is pretreated, and then immersed in deionized Water, acetone, and ethanol were each ultrasonically washed for 20 minutes, and dried; the mixed solution was poured into the inner tank of a water-heated kettle with a volume of 50 mL of water, and the pre-treated FTO glass was vertically inserted, and the water-heating reaction was carried out at 90°C for 1 hour, and then placed in DMF soaked in ...

Embodiment 2

[0043] (1) Under the protection of nitrogen atmosphere, dissolve 8 mmol of 1,4,5,8-naphthalene tetracarboxylic anhydride and 4 mmol of 5-aminoisophthalic acid in 150 mL of toluene at 120°C for 14 hours, filter, dry, and put in DMF Recrystallization gave a light yellow solid naphthalene tetracarboxylic anhydride-based ligand.

[0044] (2) 1 mmol of naphthalene tetracarboxylic anhydride-based ligand obtained in step (1) and 0.8 mmol of nickel nitrate hexahydrate are dissolved in a mixed solvent of 22 mL of DMF and 3 mL of water to obtain a mixed solution; the FTO glass is pretreated, and then immersed in deionized Ultrasonic washing in water, acetone and ethanol for 20 minutes respectively, and drying; pour the mixed solution into the inner tank of a hydrothermal kettle with a volume of 50mL of water, insert the pretreated FTO glass vertically, and conduct a hydrothermal reaction at 90°C for 0.5h, and then put it into Soak in DMF and methanol for 2 days each, and dry in vacuum a...

Embodiment 3

[0049] (1) Under the protection of nitrogen atmosphere, dissolve 1mmol of 1,4,5,8-naphthalene tetracarboxylic anhydride and 3mmol of 5-aminoisophthalic acid in 60mL of toluene at 100°C for 10h at reflux, filter, dry, and place in DMF Recrystallization gave a light yellow solid naphthalene tetracarboxylic anhydride-based ligand.

[0050] (2) 0.5 mmol of naphthalene tetracarboxylic anhydride-based ligands obtained in step (1) and 0.8 mmol of nickel nitrate hexahydrate are dissolved in a mixed solvent of 20 mL of DMF and 1.5 mL of water to obtain a mixed solution; the FTO glass is pretreated, followed by Soak in deionized water, acetone, and ethanol for 20 minutes, then dry; pour the mixed solution into a 50-mL water-heated kettle liner, insert the pretreated FTO glass vertically, and conduct a hydrothermal reaction at 120°C for 4 hours. Soak in DMF and methanol for 3 days respectively, and dry in vacuum at 60°C for 18 hours to obtain an FTO electrode with a metal-organic framewo...

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Abstract

The invention relates to a preparation method of a MOFs-based colorful electrochromic intelligent display device. The device comprises the steps of dissolving 1,4,5,8-naphthalene tetracarboxylic anhydride and 5-aminoisophthalic acid in toluene for reaction under an inert atmosphere to obtain naphthalene tetracarboxylic anhydride-based ligands; dissolving the ligands and nickel salt in DMF / water toobtain a mixed solution; placing pretreated FTO glass into the mixed solution to be subjected to a hydrothermal reaction to obtain a FTO electrode with a MOFs membrane attached on the surface of theFTO electrode; sculpturing the FTO electrode into an electrochromic working electrode for displaying predetermined patterns, using the other FTO glass as a counter electrode, injecting gel electrolyte, and packaging to obtain the device. When voltages ranging from low to high are gradually imposed on the electrochromic device, the device exhibits various colors such as yellow, red, green, blue andblack, efficiently transmits various electrolytes, has good electrochromic performance, and has a wide range of application prospects in the fields such as intelligent display, intelligent wearable articles and the like.

Description

technical field [0001] The invention belongs to the technical field of electrochromic devices, in particular to a method for preparing a MOFs-based multicolor electrochromic intelligent display device. Background technique [0002] As the leader of the revolutionary development and transformation of the next generation of new display technology, the market size and potential of smart display are huge, and various new technologies and new processes are updated with each passing day. However, currently on the market, OLED and other electroluminescent screens have serious energy consumption, poor readability in sunlight, and lack of low-cost packaging technology, which has certain limitations in the fields of outdoor display and smart wearables. People hope to develop a reflective flexible display technology with low energy consumption, no backlight and high reflection, which is as real as an oil painting, and the development of electrochromic materials provides a new solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/15C08G83/00C09K9/02
CPCC08G83/008C09K9/02C09K2211/187G02F1/15G02F1/15165
Inventor 王宏志李然李耀刚张青红侯成义
Owner DONGHUA UNIV
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