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Dichroic Dyes for Guest-Host Liquid-Crystal Cells

1986; Volume: 138; Issue: 1 Linguagem: Inglês

10.1080/00268948608071769

0026-8941

Hidehiro Seki, Tatsuo Uchida, Yukio Shibata,

Photochemistry and Electron Transfer Studies

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.