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Proceedings Paper

Synthesis of asymmetric tolane liquid crystals for display applications
Author(s): Kuen-Torng Tsay; Chain-Shu Hsu; Shin-Tson Wu
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Paper Abstract

Four series of trans-cyclohexyl-based tolanes, i.e., 4- (trans-4-alkylcyclohexy)-4'-fluorotolanes, 4-(trans-4-alkyl- cyclohexyl)-3',4'-difluorotolanes, 4-[2-(trans-4-alkyl- cyclo-hexyl)ethyl]-4'-alkyltolanes and fluorinated 4- [2-(trans-4-alkylcyclohexyl)ethyl] tolanes are prepared and characterized. All the obtained compounds display nematic liquid crystalline phases. The results demonstrate that incorporation of a cyclohexyl ring in the mesogen core structure leads to form a wide temperature range of mesophase. However it also increases the tendency to form a smectic phase. The dielectric anisotropy and birefringence of some selected compounds were measured by a guest-host method. All of those compounds studied show relatively high dielectric anisotropy and birefringence.

Paper Details

Date Published: 17 June 1998
PDF: 9 pages
Proc. SPIE 3421, Display Technologies II, (17 June 1998); doi: 10.1117/12.311057
Show Author Affiliations
Kuen-Torng Tsay, National Chiao Tung Univ. (Taiwan)
Chain-Shu Hsu, National Chiao Tung Univ. (Taiwan)
Shin-Tson Wu, HRL Labs. (United States)

Published in SPIE Proceedings Vol. 3421:
Display Technologies II
Fang-Chen Luo; Shin-Tson Wu; Shunsuke Kobayashi, Editor(s)

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