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Abstract
The synthesis and characterization of several tetra(azo)-2,3-dihydroperimidine dyes with alkyl substi-tuents in the 1, 2, and 3 positions are described. The dyes have intense blue colors, high order pararmeters and high solubilities in liquid crystal host solvents. Order parameters are enhanced with longer alkyl substituents at the 2-position. Two of the dyes exhibit thermal transitions consistent with formation of liquid crystal phases.