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Liquid Crystals Volume 34, 2007 - Issue 9
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Original Articles

The role of a liquid crystal oligomer in stabilizing blue phases

Atsushi Yoshizawa Department of Frontier Materials Chemistry, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo‐cho, Hirosaki 036‐8561, JapanCorrespondence[email protected]
,
Hirotoshi Iwamochi Department of Frontier Materials Chemistry, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo‐cho, Hirosaki 036‐8561, Japan
,
Shinpei Segawa Department of Frontier Materials Chemistry, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo‐cho, Hirosaki 036‐8561, Japan
&
Masatada Sato Department of Frontier Materials Chemistry, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo‐cho, Hirosaki 036‐8561, Japan
Pages 1039-1044 | Received 22 May 2007, Accepted 01 Jul 2007, Published online: 08 Oct 2007
 
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Abstract

A novel liquid crystal oligomer, 4‐(4‐cyanophenyl)phenyl 4‐octyloxy‐2‐{7‐{4‐[4‐(4‐hexylphenyl)‐2,3‐difluorophenyl]phenyloxy}heptanoyloxy}benzoate, was prepared and found to exhibit a wide temperature range of a nematic phase in spite of being far from a rod‐like structure. Furthermore, the compound induced blue phases in the mixture with a chiral smectic liquid crystal. The molecular shape and its 2,3‐difluorophenyl unit play a role in stabilizing the blue phases.

Acknowledgements

This work was partly supported by a Grant for Priority Research Designated by the President of Hirosaki University and a Grant‐in‐Aid for Scientific Research from the Japan Society for the Promotion of Science (No. 19550175).

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