A kind of disazo violet dye and its application

A purple dye and disazo technology, applied in disazo dyes, applications, household appliances, etc., can solve the problem of unsatisfactory solubility and achieve the effect of high solubility and improved affinity

Active Publication Date: 2017-07-18
SHENZHEN GUOHUA OPTOELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there are many rigid benzene rings in its structure, the solubility in n-decane is not ideal, and the prepared ink material is easy to crystallize out from the solvent

Method used

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  • A kind of disazo violet dye and its application
  • A kind of disazo violet dye and its application
  • A kind of disazo violet dye and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 1.0g (5mmol, 201g / mol) 1-acetylamino-7-naphthol, 1.92g (10mmol, 192g / mol) bromoisoctane, 1.38g (10mmol, 138g / mol) K 2 CO 3 Dissolved in 50mL of acetonitrile, reflux for 9h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.13, Rf product=0.55. After the reaction, the product was poured into 100 mL of water to precipitate an oily product, and the product was extracted with ethyl acetate, and the solvent and isooctane bromide were removed by rotary evaporation at 90°C to obtain the first intermediate. Yield 88%.

[0047] Weigh 0.88 g of the intermediate of the first step and dissolve it in 50 mL of isopropanol, add 20 times the amount of KOH and reflux for 5 h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.55, Rf product=0.63. The product solution was poured into water, extracted with ethyl acetate, and dried by rotary evaporation to obtain the second intermediate Yield 88.0%.

[0048]Weigh 2.0...

Embodiment 2

[0053] Weigh 1.0g (5mmol, 201g / mol) 1-acetylamino-7-naphthol, 1.92g (10mmol, 192g / mol) bromoisoctane, 1.38g (10mmol, 138g / mol) K 2 CO 3 Dissolved in 50mL of acetonitrile, reflux for 9h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.13, Rf product=0.55. After the reaction, the product was poured into 100 mL of water to precipitate an oily product, and the product was extracted with ethyl acetate, and the solvent and isooctane bromide were removed by rotary evaporation at 90°C to obtain the first intermediate. Yield 88%.

[0054] Weigh 0.88 g of the intermediate of the first step and dissolve it in 50 mL of isopropanol, add 20 times the amount of KOH and reflux for 5 h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.55, Rf product=0.63. The product solution was poured into water, extracted with ethyl acetate, and dried by rotary evaporation to obtain the second intermediate Yield 88.0%.

[0055] Weigh 2.0...

Embodiment 3

[0060] The invention provides a kind of disazo violet dye, its general chemical structure formula is as shown in (I):

[0061]

[0062] Among them, R 1 is n-butyl, R 2 is n-butoxy, R 3 is methyl, R 4 For ethyl. Get 1 mass part of disazo violet dye and dissolve it in 1 mass part of n-dodecane to obtain a kind of ink, the ink is purple, and the ink has no crystallization phenomenon when the ink is left standing at low temperature for a long time, which can effectively The ink can be applied to electrowetting display devices. Electrowetting is also called electrowetting, and the ink of the present invention is also suitable for electrowetting displays. The present invention also provides an electrowetting display, also referred to as an electrowetting display, comprising the above-mentioned ink.

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Abstract

The invention discloses a disazo violet dye and its application. The structure of the disazo violet dye introduces an alkoxy chain R 2 , greatly improving the affinity of the disazo violet dye with non-polar solvents, the disazo violet dye has high solubility in non-polar solvents, and the introduction of long carbon chains inhibits the interaction between dye materials Therefore, the disazo violet dye is not easy to crystallize out in a non-polar solvent, and a purple ink can be obtained by dissolving the dye in a non-polar solvent, and the ink has no crystallization under a low temperature for a long time The precipitation phenomenon can be effectively applied to electrowetting display devices.

Description

technical field [0001] The invention relates to the field of electrowetting displays, in particular to a disazo violet dye and an application thereof. Background technique [0002] Electrowetting display technology (EFD, Electrofluide display), also known as electrowetting display technology, is a display prototype based on the principle of electrowetting display first developed by Philips of the Netherlands in 2003. The display principle is to control the surface properties of the hydrophobic layer by changing the voltage, and change the contact angle of the ink layer on the hydrophobic layer: when no voltage is applied, the ink wets the insulating layer evenly to form a colored pixel; when the voltage is applied, The effect of the electric field changes the surface properties of the hydrophobic layer to change the interfacial tension between the three phases of ink-polar liquid-hydrophobic layer, and the ink is compressed to form transparent or substrate-colored pixels, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B31/14C09D11/037G02B26/02
Inventor 邓勇郭媛媛唐彪蒋洪伟艾利克斯·维克多·汉森周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS
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