Azo dye compound and application thereof

Abstract

The invention relates to the technical field of azo dye materials, and particularly discloses an azo dye compound and application thereof. The azo dye compound has the maximum absorption wavelength range of 400-550 nm, has the characteristics of small power consumption change rate after aging, good reliability, high light stability, high dichroic ratio and the like, has relatively high solubility in a liquid crystal material, can be stored in a liquid crystal medium for a long time, can be applied to guest-host liquid crystal compositions, and has a good application prospect. The guest-host liquid crystal composition can keep proper transmittance in a bright state and a dark state, so that a liquid crystal display device containing the guest-host liquid crystal composition has higher contrast. The synthesis method of the azo dye compound is simple and can meet industrial production requirements. The liquid crystal composition containing the azo dye compound is high in light transmittance when powered on and low in light transmittance after powered off in different parent liquid crystals, and has remarkable optical performance when being applied to a dimming film, dimming glass, a liquid crystal display element or a liquid crystal display.

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