Disproof of a Conjecture on List Coloring
Disproof of a Conjecture on List Coloring
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反驳关于列表着色的猜想
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发表时间:
2008
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中科院分区:
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Novel tris-azo dyes and a liquid crystal composition containing the tris-azo dyes. The tris-azo dyes are of the general formula: wherein R1 and R2 are various aromatic groups including aromatic amines, substituted aromatic amines, hydroxy-substituted aromatic groups and substituted hydroxy-containing aromatic groups. When the tris-azo dichroic dyes are used as a guest dye in a host liquid crystal material, they form a novel liquid crystal composition for use in liquid crystal displays.