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Compound, liquid crystal composition and application thereof

A technology of liquid crystal composition and compound, applied in the direction of liquid crystal materials, organic chemistry, chemical instruments and methods, etc., can solve problems such as poor display, achieve moderate optical anisotropy, stable pre-tilt angle, and fast response speed

Pending Publication Date: 2021-08-20
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the first object of the present invention is to provide a compound that contains at least one dihydroxy group, has higher anchoring force, can obtain a more stable pretilt angle, has better solubility, and can adapt to Wider storage temperature range, and can obtain a polymer film with higher uniformity, so as to prevent free radical ions from destroying the liquid crystal composition and causing poor display problems

Method used

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  • Compound, liquid crystal composition and application thereof
  • Compound, liquid crystal composition and application thereof
  • Compound, liquid crystal composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0158]

[0159] step 1

[0160]

[0161] Put (0.1mol) 2-bromo-5-chlorophenol and (0.1mol) compound 1 into a 500ml three-necked flask, add 0.15mol anhydrous potassium carbonate, DMF500ml, heat and stir to 90-120°C for 4 hours.

[0162] Add 1000ml of water, separate, wash the organic phase with water, remove the solvent under reduced pressure, dissolve petroleum ether + toluene through a silica gel column, and recrystallize to obtain 35g of white oil (1-a), GC: 99.2%, yield 83%.

[0163] step 2

[0164]

[0165] Dissolve 0.1 mol of compound 2 and 0.1 mol of compound 3 in 500 ml of tetrahydrofuran, then add 0.15 mol of triphenylphosphine, under nitrogen protection, add 0.15 mol of DIAD dropwise, stir at room temperature for 2 hours, add the system to water, wash the organic phase with water, and depressurize The solvent was aliquoted under the following conditions, and toluene+ethanol was recrystallized to obtain 45.1 g of white crystal (1-b), HPLC: 98.7%, yield 74.9%. ...

Embodiment 2

[0186]

[0187] step 1

[0188]

[0189] Add 50g of compound 5 into tetrahydrofuran, under nitrogen protection, cool down to 0°C, add 16g of potassium tert-butoxide in batches, and stir for 30 minutes, dissolve 25g of 2-benzyloxy 5-bromobenzaldehyde in tetrahydrofuran, and add dropwise to in the above system. After the reaction was completed, it was poured into 300 ℃ of water, extracted with ethyl acetate, spin-dried, and separated by column to obtain 35g of white solid 2-a, GC: 98.5%, yield: 90.9%

[0190] step 2

[0191]

[0192] Add 35g of white solid 2-a, 9.6g of potassium acetate, 29.8g of pinacol diborate and 0.5g of tetrakistriphenylphosphopalladium into DMF under nitrogen protection, raise the temperature to 120°C, and keep stirring for 2 hours. The system was poured into water and stirred, extracted with ethyl acetate, the organic phase was washed twice with saturated brine, dried and spin-dried, and 30 g of white solid 2-b was obtained by column separation...

Embodiment 3

[0212]

[0213] step 1

[0214]

[0215] According to the method in step 2 of Example 1, a colorless oil 3-a was obtained, 35 g, GC: 99.1%, yield: 88.1%.

[0216] step 2

[0217]

[0218] According to the method in Step 2 of Example 2, a colorless oily substance 3-b was obtained, 31 g, GC: 98.2%, yield: 82.2%.

[0219] step 3

[0220]

[0221] According to the method in Step 1 of Example 1, a colorless oil 3-c was obtained, 50 g, GC: 97.8%, yield: 85.5%.

[0222] step 4

[0223]

[0224] According to the synthesis method of step 3 of Example 1, 30 g of colorless oil (3-d) was obtained, HPLC: 99.1%, yield 65.5%.

[0225] step 5

[0226]

[0227] According to the synthesis method of step 4 of Example 1, 33 g of compound (3-e) was obtained, HPLC: 99.4%, and the yield was 88.7%.

[0228] step 6

[0229]

[0230] The compound (3-f) 25 g was obtained according to the synthesis method in Step 5 of Example 1, HPLC: 99.1%, and the yield was 89.2%.

[0231] ...

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Abstract

The invention provides a compound which is as shown in a formula I and can realize a self-alignment function, a negative liquid crystal composition containing the compound, and a liquid crystal display element or a liquid crystal display containing the compound or the liquid crystal composition. The compound shown in the formula I at least contains one dihydroxyl; and in the panel ODF manufacturing process, due to the fact that the intermolecular acting force between the dihydroxyl and panel surfaces (a glass surface and an ITO electrode surface) is higher, the compound shown in the formula I has better anchoring property, and a more stable pretilt angle is obtained. The compound shown in the formula I has better solubility, especially low-temperature solubility, and can adapt to a wider storage temperature range; and a polymer film with higher uniformity can be obtained, so that the problem of poor display caused by damage of free radical ions to the liquid crystal composition is prevented.

Description

technical field [0001] The invention relates to the field of liquid crystal display, and specifically relates to a compound, a liquid crystal composition containing the compound, and a liquid crystal display element or a liquid crystal display containing the compound or the liquid crystal composition. Background technique [0002] With the development of display technology, liquid crystal display devices (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, TVs, Various consumer electronic products such as personal digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] At present, in commonly used liquid crystal display devices (LCD), there is a layer of thin film material on the color filter substrate and the TFT substrate respectively, and its main function is to arrange the liquid crystal molecules in a certain direction, which is called the alignment l...

Claims

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Application Information

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IPC IPC(8): C07C69/54C09K19/30C09K19/46G02F1/1337
CPCC07C69/54C09K19/3003C09K19/46C09K2019/3025C07C2601/02C07C2601/08C07C2601/14G02F1/133711
Inventor 姜军王奎梁志安孙新战李明安险峰李佳明
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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