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Benzofuran polymerizable compound and application thereof

A benzofuran and compound technology, applied in the field of benzofuran polymerizable compounds, can solve the problems of short UV sensitivity wavelength and poor uniformity of polymerizable components

Active Publication Date: 2019-11-05
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, due to the problem that the polymerizable unit is too short for the UV sensitivity wavelength, or there is no or insufficient tilt angle after illumination, or the homogeneity of the polymerizable component is poor after illumination

Method used

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  • Benzofuran polymerizable compound and application thereof
  • Benzofuran polymerizable compound and application thereof
  • Benzofuran polymerizable compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The structural formula of the liquid crystal compound is:

[0045]

[0046] The synthetic route for preparing compound BYLC-01 is as follows:

[0047]

[0048] Specific steps are as follows:

[0049] (1) Synthesis of compound BYLC-01-1:

[0050] Add 40g to the reaction bottle 14.0g of anhydrous potassium carbonate, 200ml of toluene, 150ml of ethanol, 150ml of water, 0.3g of tetrakistriphenylphosphine palladium, heated to reflux for 8h, and carried out conventional post-treatment to obtain 45.1g of off-white solid (compound BYLC-01-1) , HPLC: 99.7%, yield 87.1%;

[0051] (2) Synthesis of compound BYLC-01-2:

[0052] Add 45.1 g of compound BYLC-01-1, 6 g of NaOH, and 400 ml of deionized water into the reaction flask, and stir at room temperature for 2 h. After acidification with hydrochloric acid, conventional post-treatment was carried out to obtain a white solid (compound BYLC-01-2), 43.1 g, HPLC: 99.8%, yield 95.8%

[0053] (3) Synthesis of compound BYLC-0...

Embodiment 2

[0058] The structural formula of the liquid crystal compound is:

[0059]

[0060] The synthetic route for preparing compound BYLC-02 is as follows:

[0061]

[0062] Specific steps are as follows:

[0063] Synthesis of compound BYLC-02:

[0064] Under the protection of nitrogen, add 45.0g of compound BYLC-01-2, 32.5g of triethylamine and 250mL of methylene chloride into the reaction flask, cool down to -10°C, control the temperature from -10°C to 0°C, and add 28.0g of acryloyl chloride dropwise, Rise to room temperature and react for 6 hours. Pour the reaction solution into water, neutralize it with aqueous uranium bicarbonate solution, perform conventional post-treatment, purify by chromatography, elute with n-hexane, and recrystallize from ethanol to obtain 39.3 g of a white solid (compound BYLC-02), LC : 99.8%, yield: 84.5%.

[0065] The obtained white solid BYLC-02 was analyzed by GC-MS, and the m / z of the product was 480.1 (M+).

[0066] 1H-NMR (300MHz, CDCl3):...

Embodiment 3

[0068] The structural formula of the liquid crystal compound is:

[0069]

[0070] by replace Other reaction conditions are the same as in Example 1.

[0071] The resulting white solid, BYLC-03, was analyzed by GC-MS, and the m / z of the product was 558.1 (M+).

[0072] 1H-NMR (300 MHz, CDCl3): 1.55-2.15 (m, 7H), 5.35-6.55 (m, 6H), 6.65-7.95 (m, 11H).

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PUM

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Abstract

The invention relates to the technical field of liquid-crystal materials and particularly relates to a benzofuran polymerizable compound and an application thereof. The compound has a structure represented by a general formula I. Compared with the prior art, the compound disclosed by the invention has the advantages of good solubility, better orientation effect, higher polymerization rate, more complete polymerization and lower residual, so that the problem of poor display is relatively greatly improved. A liquid-crystal composition containing the compound has relatively low viscosity, can achieve quick response and meanwhile has moderate dielectric anisotropy [delta][pound]; and a liquid crystal display element or liquid crystal display containing the liquid-crystal composition has the properties of relatively wide nematic temperature range, appropriate or relatively high birefraction anisotropy [delta]n, relatively high resistivity, good ultraviolet resistance, high electric charge retentivity, low steam pressure and the like.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and relates to a benzofuran polymerizable compound and an application thereof. Background technique [0002] In recent years, liquid crystal display devices have been widely used in various electronic devices such as smartphones, tablet computers, car navigation systems, televisions, and the like. Representative liquid crystal display modes include twisted nematic (TN) type, super twisted nematic (STN) type, in-plane switching (IPS) type, fringe field switching (FFS) type and vertical alignment (VA) type. Among them, the VA mode has attracted more and more attention due to its fast fall time, high contrast, wide viewing angle, and high-quality images. [0003] However, the liquid crystal medium used in the display elements of the active matrix addressing mode such as VA mode has its own shortcomings, such as the afterimage level is obviously worse than that of the display elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/83C09K19/34
CPCC07D307/83C09K19/3405
Inventor 王迎运姜天孟田会强储士红高立龙王新颖陈海光戴雄
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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