Studies on Photochromic Liquid Crystalline Polymers(Ⅰ)─Liquid Crystalline Behaviour or Side-Chain Polysiloxane Containing Cholesteric Mesogens and Its Monomer

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (6): 928.

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Studies on Photochromic Liquid Crystalline Polymers(Ⅰ)─Liquid Crystalline Behaviour or Side-Chain Polysiloxane Containing Cholesteric Mesogens and Its Monomer

ZHANG Qi-Zhen, WANG Yan

Department of Chemistry, Shandong University, Ji'nan, 250100

Received:1993-06-29 Revised:1994-01-22 Online:1994-06-24 Published:1994-06-24

Abstract

Abstract: The liquid crystalline properties of polysiloxane with cholesteric mesogens in sidechain and its monomer were characterized by polarized microscopy with a hot stage, DSCand x-ray diffraction.Cholesteric texture with oily streaks and spirals, monotropic smectic with fan-shaped and solid-solid transition were observed in monomer while only the smectic phase was exhibited by polysiloxane fan-shaped texture.

Key words: Liquid crystalline polymer, Polysiloxane, Cholesteryl undecylenate, Smectic phase, Cholesteric phase

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ZHANG Qi-Zhen, WANG Yan. Studies on Photochromic Liquid Crystalline Polymers(Ⅰ)─Liquid Crystalline Behaviour or Side-Chain Polysiloxane Containing Cholesteric Mesogens and Its Monomer[J]. Chem. J. Chinese Universities, 1994, 15(6): 928.

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Studies on Photochromic Liquid Crystalline Polymers(Ⅰ)─Liquid Crystalline Behaviour or Side-Chain Polysiloxane Containing Cholesteric Mesogens and Its Monomer

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