4-amido-1,8-naphthalimide derivative fluorescent dichroic dye and application thereof

Abstract

The invention provides a 4-amido-1,8-naphthalimide derivative fluorescent dichroic dye and application thereof, and belongs to the field of display materials. The 4-amido-1,8-naphthalimide derivative fluorescent dichroic dye is prepared by introducing substituted amino into naphthalimide serving as a matrix and modifying the matrix, and has the advantages of fluorescent dichroism, novel structure, readily available raw materials and simple synthesis method. Tests prove that the dye has bright yellow green fluorescence, maximum transmission wavelength of 497nm and fluorescence quantum yield ofbetween 0.67 and 0.74, shows good dichroism in liquid crystal MLC6237-01 epsilon, has an absorption order parameter of between -0.11 and -0.12, dichroic ratio of between 1.3 and 1.5, fluorescent order parameter of between -0.38 and -0.40, and fluorescent dichroic ratio of between 6.3 and 7.1.

Description

technical field [0001] The invention relates to a class of 4-amino-1,8-naphthalimide derivative fluorescent dichroic dyes and applications thereof, belonging to the field of display materials. Background technique [0002] The reason why the "guest-host" liquid crystal display can become a kind of display with application prospects is that it not only displays information with bright colors, high brightness, good contrast, and wide viewing angle, but also only needs to use a polarizer or even a single polarizer when assembling. No polarizer is used, which greatly improves the light utilization efficiency of the backlight source. Especially in recent years, the development of fluorescent dichroic liquid crystal dyes, which are applied to "guest-host" display, can combine the bright color light and high brightness of emissive display with the characteristics of liquid crystal display, and can become a kind of energy consumption Lower portable electronics displays. The "gue...

AI Technical Summary

Problems solved by technology

At present, the fluorescent dichroic liquid crystal dyes reported in the literature are positive dichroic dyes, which greatly limits their application and development.

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