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Compound and liquid crystal composition thereof, and applications of liquid crystal composition

A compound and cyclic structure technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of slow response time, difficult driving, and low transmittance

Active Publication Date: 2018-06-26
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Traditional liquid crystal displays often have problems such as low transmittance, high threshold voltage (~2.92V), and slow response time due to differences in driving methods and liquid crystal molecular characteristics, which will cause difficult driving and image smearing. Therefore, it is urgent to provide a liquid crystal material with high transmittance and rapid response.

Method used

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  • Compound and liquid crystal composition thereof, and applications of liquid crystal composition
  • Compound and liquid crystal composition thereof, and applications of liquid crystal composition
  • Compound and liquid crystal composition thereof, and applications of liquid crystal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Compound 1-(4-methoxy-butoxy)-4-(4-propyl-cyclohexyl)phenyl (No.2(R 1 =-C 3 h 7 , R=-CH 3 ), note: the numbering sees the following table 2, the same below) the synthetic route is as follows:

[0088]

[0089] Its specific preparation process is as follows:

[0090] Into a 500ml three-necked flask, add 2.18g propylcyclohexylphenol, 100ml anhydrous dimethylformamide (DMF), 2.76g anhydrous potassium carbonate, 0.15g potassium iodide, 1.4g 4-chlorobutyl methyl ether, stir at 90°C for 6h, After the completion of the reaction, post-treatment, purification by column chromatography, to obtain 2.5g white solid, compound No.2 (R 1 =-C 3 h 7 , R=-CH 3 ), GC>99%, yield: 91%.

[0091] MS: 55 (11%) 87 (100%) 107 (8.9%) 120 (10%) 133 (7.8%).

Embodiment 2

[0093] Compound 2,3-difluoro-4-(4-methoxy-butoxy)-4'-(4-propyl-cyclohexyl)-1,1'-biphenyl (No.66(R 1 =-C 3 h 7 , R=-CH 3 )) The synthetic route is as follows:

[0094]

[0095] Its specific preparation process is as follows:

[0096] 1. Synthesis of Compound M4

[0097]In a 500ml three-necked flask, add 5.1g 4-iodo-2,3-difluorophenol, 150ml anhydrous dimethylformamide (DMF), 5.5g anhydrous potassium carbonate, 0.3g potassium iodide, 2.8g 4-chlorobutyl methyl ether , stirred at 90°C for 6h, after the reaction was completed, post-treatment, and purified by column chromatography to obtain 6.6g of white solid, compound M4, GC>97%, yield: 97%.

[0098] 2. Compound No.66(R 1 =-C 3 h 7 , R=-CH 3 )Synthesis

[0099] In a 500ml three-necked flask, add 3.4g compound M4, 2.5g propylcyclohexylbenzeneboronic acid, 80ml toluene, 40ml ethanol, 40ml water, 4.2g anhydrous sodium carbonate, under nitrogen protection, add 0.1g tetrakis (triphenylphosphine) Palladium, heated and stir...

Embodiment 3

[0102] Compound 2',3'-difluoro-4-(4-methoxy-butoxy)-4"-propyl-1,1',4',1"-terphenyl (No.76(R 1 =-C 3 h 7 , R=-CH 3 )) The synthetic route is as follows:

[0103]

[0104] Its specific preparation process is as follows:

[0105] 1. Synthesis of Compound M7

[0106] In a 500ml three-necked flask, add 4.4g 4-iodophenol, 150ml anhydrous dimethylformamide (DMF), 5.5g anhydrous potassium carbonate, 0.3g potassium iodide, 2.8g 4-chlorobutyl methyl ether, stir at 90°C for 6h, and react After completion, post-processing, purification by column chromatography, to obtain 5.7g of white solid, compound M7, GC>97%, yield: 93%.

[0107] 2. Compound No.76 (R 1 =-C 3 h 7 , R=-CH 3 )Synthesis

[0108] In a 500ml three-necked flask, add 3.1g compound M7, 2.8g propyl difluorobiphenylboronic acid, 80ml toluene, 40ml ethanol, 40ml water, 4.2g anhydrous sodium carbonate, under nitrogen protection, add 0.1g tetrakis (triphenylphosphine ) palladium, heated and stirred to reflux 6h, after ...

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PUM

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Abstract

The present invention discloses a compound, which comprises at least a cyclic structure and group bonding represented by a general formula I. The present invention further discloses a liquid crystal composition comprising the compound of the present invention, and a photoelectric display device containing the liquid crystal composition. According to the present invention, the compound has advantages of stable chemical property, stable physical property, good low-temperature storage property, appropriate dielectric anisotropy and appropriate refractive index anisotropy; with the application ofthe compound in liquid crystal products, the transmittance of the product can be significantly improved, and the response speed can be significantly improved; and the compound has good compatibility with other liquid crystal compounds, and has wide applicability. The formula I is defined in the specification.

Description

technical field [0001] The invention belongs to the field of liquid crystal materials, and in particular relates to a compound and its liquid crystal composition and application. Background technique [0002] Liquid crystal display elements using liquid crystal compositions are widely used in displays of watches, calculators, word processors, and the like. These liquid crystal display elements utilize the refractive index anisotropy, dielectric anisotropy, etc. of liquid crystal compounds. The known operating modes of liquid crystal display elements are mainly divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electrical controlled birefringence), OCB (optical compensated bend), IPS (in-plane switching, in-plane transition), VA (vertical alignment, vertical alignment) and other types. In recent years, studies have also been actively conducted on t...

Claims

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Application Information

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IPC IPC(8): C09K19/30C09K19/12C09K19/34
CPCC09K19/3003C09K19/3066C09K19/3068C09K19/3405C09K2019/122C09K2019/123C09K2019/3009C09K2019/301C09K2019/3016C09K2019/3025C09K2019/308
Inventor 韩文明徐海彬徐爽陈昭远
Owner JIANGSU HECHENG DISPLAY TECHCO
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