Compounds, liquid crystal composition and liquid crystal display

A liquid crystal composition, liquid crystal display technology, applied in the directions of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problem of low clearing point and dielectric constant of liquid crystal composition, narrow response speed, liquid crystal display can not be in high temperature state. Use the working temperature range and other issues to achieve the effect of increasing the working temperature range, improving the clearing point, and increasing the dielectric constant

Active Publication Date: 2018-02-06
FUYANG XINYIHUA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a compound, which solves the problems of liquid crystal composition clearing point and low dielectric constant in the prior art; the invention also provides a liquid crystal composition and a liquid crystal display, which solves the problem that the liquid crystal display cannot be used in a high temperature state. problems with low operating temperature and narrow operating temperature range and slow response

Method used

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  • Compounds, liquid crystal composition and liquid crystal display
  • Compounds, liquid crystal composition and liquid crystal display
  • Compounds, liquid crystal composition and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The specific compound synthesized is shown in formula P1:

[0063]

[0064] The synthetic route of P1 is as follows:

[0065]

[0066] First proceed to step 1:

[0067] The compound 3,4-dihydroxy-1-propylcyclopentane and 3,5-difluorobenzaldehyde are reacted in toluene to obtain the compound shown in formula P1-1, and the specific steps are:

[0068] In a 250ml three-necked flask, add 14.4 grams of 3,4-dihydroxyl-1-propylcyclopentane (prepared with reference to European Journal of Medicinal Chemistry 46 (2011) 1263-1273), 14.2 grams of 3,5-difluorobenzaldehyde, 100 milliliters of toluene was heated to 80 degrees to react for 4 hours, cooled, dried over magnesium sulfate, separated by silica gel column chromatography, and then recrystallized with a mixed solvent of ethanol and petroleum ether to obtain 15.0 grams of the compound shown in formula P1-1, with a yield of 56 %, product mass spectrum (m / e): 268, 1 HNMR (500MHz, CDCl 3 ), δ7.04(m, 2H), δ6.82(m, 1H), δ5...

Embodiment 2

[0079] The concrete compound of synthesis is shown in formula P7:

[0080]

[0081] The synthetic route of P7 is as follows:

[0082]

[0083] First proceed to step 1:

[0084] Compound 3,4-dihydroxyl-1-propylcyclopentane and p-bromobenzaldehyde are reacted in toluene to obtain the compound shown in formula P7-1, and the specific steps are:

[0085] In a 250ml three-necked flask, add 14.4 grams of 3,4-dihydroxy-1-propylcyclopentane (prepared with reference to European Journal of Medicinal Chemistry 46 (2011) 1263-1273), 18.5 grams of p-bromobenzaldehyde, 100 milliliters of toluene, Heated to 80 degrees to react for 4 hours, lowered the temperature, dried with magnesium sulfate, separated by silica gel column chromatography, recrystallized from a mixed solvent of ethanol and petroleum ether to obtain the product, 11.2 grams of the compound shown in formula P7-1, yield 36.01%, product mass spectrum (m / e): 310, 312, 1 HNMR (500MHz, CDCl 3 )δ7.78(m, 2H), δ7.30(m, 2H), δ5...

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Abstract

The invention discloses compounds, liquid crystal composition and a liquid crystal display. The compounds are as shown in the formula I in the description, wherein R is at least one of hydrogen, vinyland C1-C10 alkyl independently, each group in the description is at least one of the following groups shown in the description, and X1, X2, X3, X4, X5, X6, X7, X8 and X9 are independently selected from H, F, Cl, CH3, CF3 and OCF3; m is selected from 0, 1, 2 or 3; n is selected from 0 or 1. The liquid crystal composition contains at least one of the compounds. The liquid crystal display is made ofthe liquid crystal composition.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a compound, a liquid crystal composition and a liquid crystal display. Background technique [0002] Among flat panel display devices, Thin Film Transistor Liquid Crystal Display (TFT-LCD) has the characteristics of small size, low power consumption, relatively low manufacturing cost and no radiation, and occupies a dominant position in the current flat panel display market. status. [0003] Liquid crystal displays have been widely used in various aspects of social life. Since the development of liquid crystal display technology, various liquid crystal compounds have been practically applied. Some general requirements for liquid crystal compounds, including phase transition temperature, optical anisotropy, dielectric anisotropy, viscosity, resistivity, etc. of liquid crystal compounds, all have a great impact on the final application of liquid crystal materials. It is ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/44C09K19/34G02F1/1333
CPCC07D317/44C09K19/3405C09K2019/0414C09K2019/3408G02F1/1333
Inventor 李志强洪豪志王占奇郭林林罗世宏刘杰
Owner FUYANG XINYIHUA MATERIAL TECH
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