Dichroic Dyes for Guest-Host Liquid-Crystal Cells

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Abstract
To clarify the relation between molecular structure and an order parameter of dichroic dyes of the guest-host liquid-crystal cells, the ratio l/d of length l to diameter d of circumscribed cylinders of dichroic dyes is used as a parameter. Experimental results clarify that there exists an obvious correlation between l/d and order parameters of long axes of dye molecules; information is obtained on ordering states of dyes dissolved in a liquid crystal, especially the performance of flexible parts of dye molecules.