Polar Liquid Crystals Formed from Polar Rigid-Rod Polyester Based on Hydroxy Benzoic Acid and Hydroxy Naphthoic Acid

Junji Watanabe Department of Polymer Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152, Japan

Liu Yuqing Department of Polymer Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152, Japan

Hitoshi Tuchiya Department of Polymer Chemistry, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152, Japan

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

Abstract

We describe a distinct nematic liquid crystal with ferroelectric ordering which is formed from the polar rod-like aromatic polyester. The nematic liquid crystal is biaxial and the polarity appears along both axes as determined by measurements of the second harmonic generation. The strong dipole-dipole interaction between polar rod-like molecules may be ascribed to the origin of the polarity.

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Polar Liquid Crystals Formed from Polar Rigid-Rod Polyester Based on Hydroxy Benzoic Acid and Hydroxy Naphthoic Acid

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Polar Liquid Crystals Formed from Polar Rigid-Rod Polyester Based on Hydroxy Benzoic Acid and Hydroxy Naphthoic Acid

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