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Modified copper phthalocyanine, preparation method, application and blue electronic ink

A technology of electronic ink and copper phthalocyanine, which is applied in the field of electrophoretic display materials, can solve the problems of little research on modification, and achieve excellent dispersion stability and electrophoretic performance, great practical application potential, good chromaticity and density.

Active Publication Date: 2022-04-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the modification of pigment particles using ionic liquids as charge control agents.

Method used

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  • Modified copper phthalocyanine, preparation method, application and blue electronic ink
  • Modified copper phthalocyanine, preparation method, application and blue electronic ink
  • Modified copper phthalocyanine, preparation method, application and blue electronic ink

Examples

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Effect test

preparation example Construction

[0036] The preparation method of the modified copper phthalocyanine, the steps are as follows: take a flask, add the above-mentioned absolute ethanol, pyridine ionic liquid and copper phthalocyanine in parts by weight, and then place the flask in an ultrasonic disperser for ultrasonic dispersion , the ultrasonic dispersion time is 10-15min, and the dispersion A is obtained; the dispersion A is placed in a stirring device, and the temperature is raised to 70-75°C while stirring. -2 hours, then cooled to room temperature to obtain dispersion B; place dispersion B in a vacuum desiccator to remove ethanol in dispersion B to obtain modified copper phthalocyanine.

[0037] A blue electronic ink using modified copper phthalocyanine as described above, the preparation raw material components and parts by weight of the ink are as follows: 0.1-0.3 parts of modified copper phthalocyanine (CP-IL); non-polar medium (using Tetrachloroethylene, the molecular formula is C 2 Cl 4 , purchased f...

specific Embodiment 1

[0046] Specific example 1: absolute ethanol 50ml (obtained by conversion of 50 parts by weight), 0.1 g of 1-hexylpyridinium bromide (obtained by conversion of 0.1 parts by weight), CP0.5g (obtained by conversion of 0.5 parts by weight) , 0.2g of CP-IL (obtained by conversion of 0.2 parts by weight), 0.2g of Span80 (obtained by conversion of 0.2 parts by weight) and 10ml of TCE (obtained by conversion of 10 parts by weight). Among them, CP-IL is CP modified by 1-hexylpyridinium bromide. In the specific preparation process, the CP needs to be modified first, and then the above weight parts of CP-IL are weighed.

[0047] The preparation steps of specific embodiment 1:

[0048] (1) Surface modification of CP by ionic liquid: 50ml of absolute ethanol and 0.1g of 1-hexylpyridinium bromide were added to a 100ml flask containing 0.5g of CP, and ultrasonically vibrated for 10 minutes. The mixture was stirred at 70°C for 1.5 hours, then ethanol was removed at 50°C with a vacuum drier. ...

specific Embodiment 2

[0050] Specific embodiment 2: absolute ethanol 50ml (obtained through 50 parts by weight conversion), 1-butyl-1-methylpyrrolidine bromide 0.1g (obtained through 0.1 parts by weight conversion), CP0.5g (obtained through 0.5 parts by weight) CP-IL 0.2g (obtained by converting 0.2 parts by weight), Span80 0.2g (obtained by converting 0.2 parts by weight) and TCE 10ml (obtained by converting 10 parts by weight). Among them, CP-IL is the CP modified by 1-butyl-1-methylpyrrolidine bromide. In the specific preparation process, it is necessary to modify the CP first, and then weigh the CP-IL of the above parts by weight. IL.

[0051] The preparation steps of specific embodiment 2:

[0052] (1) Surface modification of CP by ionic liquid: 50ml of absolute ethanol and 0.1g of 1-butyl-1-methylpyrrolidine bromide were added to a 100ml flask containing 0.5g of CP, and ultrasonically vibrated for 10 minutes. The mixture was stirred at 70°C for 1.5 hours, then ethanol was removed at 50°C wi...

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Abstract

The invention discloses modified copper phthalocyanine, a preparation method, application and blue electronic ink. The modified copper phthalocyanine is prepared from copper phthalocyanine, ionic liquid and absolute ethyl alcohol. The ionic liquid is pyridine ionic liquid or pyrrolidine ionic liquid; the prepared modified copper phthalocyanine has good chromaticity and density, is uniform in size, and has excellent dispersion stability and electrophoresis performance in a non-polar medium, and the zeta potential of the modified copper phthalocyanine can reach more than + 50 mV; the modification method is physical adsorption, and the chromaticity and optical performance of pigment particles are reserved to the maximum extent; the preparation method is simple, short in time consumption and remarkable in effect; the blue electronic ink is prepared from modified copper phthalocyanine, tetrachloroethylene and Span80, the blue electronic ink is applied to electrophoretic display liquid, and tests show that under the bias voltage of 30V, the response time of a simple EPD device is 11121 ms, the maximum contrast ratio is 3.173, and the blue electronic ink shows huge practical application potential in color electrophoretic display.

Description

technical field [0001] The invention relates to an electrophoretic display material, in particular to a modified copper phthalocyanine, a preparation method, an application and a blue electronic ink. Background technique [0002] An electrophoretic display (EPD) is a reflective digital display that is often considered a green electronic display due to its stable image, wide viewing angle, good contrast ratio, and low power consumption. Currently, color electrophoretic display technology, while having broader potential applications than commercial black-and-white e-books, is still in its infancy. At present, the RGB three colors are realized by placing a color filter array on the electronic film, but the color filter not only limits the brightness to less than one-third of the incident light, but also sacrifices the saturation of the color. On the other hand, the optical and electrical properties of EPD devices are highly dependent on the composition of the suspension, and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/12C09D11/00
CPCC09B67/0032C09D11/00Y02P20/54
Inventor 张智王瑶陈群迟锋杨健君潘新建于淼刘黎明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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