Li Xiaolian, Zhang Zongying, W. Yi
2010
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Journal
Chinese Journal of Liquid Crystals and Displays
Abstract
In present work,1,5-dihydroxy-4,8-diamino-2-(p-alkoxyphenyl)anthraquinones have been synthesized through the methods of substitution,addition indexing,reduction,sulfonation,taking off sulphur,to change partial groups and bases inαposition andβposition,using 1,5-dihydroxy-4,8-dinitroanthraquinone as the raw material.UV maximum is up to 580nm,and the order parameter is 0.71,both of which can satisfy the need on properties of dichroic dyes used for guest-host liquid crystal display.