Development of the Nematic Liquid Crystal Compounds Derived from Phenyl Acetylene Group with Large Birefringence

Yoichitakanishi Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

Mitsutaka Yoshimoto Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

Ken Ishikawa Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

Hideo Takezoe Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan

Abstract

Novel liquid crystal compounds with extraordinary large birefringence have been studided from the viewpoint of optical anisotropy. A large birefrinence was obtained in the compounds compared with that in 5CB, while the orientational order parameters determined by FT-IR measurement are almost the same. From the calculated results of molecular polarizability, it is concluded that the large optical anisotropy is mainly caused by the electric anisotropy.

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Development of the Nematic Liquid Crystal Compounds Derived from Phenyl Acetylene Group with Large Birefringence

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Development of the Nematic Liquid Crystal Compounds Derived from Phenyl Acetylene Group with Large Birefringence

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