Ferroelectric liquid crystal mixtures containing chiral ether and ester compounds with the 2-arylidene-p-menthan-3-one skeleton

E. V. Popova; Lidiya A. Kutulya; V. V. Vashchenko; Mikhail N. Pivnenko; A. I. Krivoshey; A. P. Fedoryako

doi:10.1117/12.472142

27 June 2002 Ferroelectric liquid crystal mixtures containing chiral ether and ester compounds with the 2-arylidene-p-menthan-3-one skeleton

E. V. Popova, Lidiya A. Kutulya, V. V. Vashchenko, Mikhail N. Pivnenko, A. I. Krivoshey, A. P. Fedoryako

Author Affiliations +

Proceedings Volume 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications; (2002) https://doi.org/10.1117/12.472142
Event: XIV Conference on Liquid Crystals, Chemistry, Physics, and Applications, 2001, Zakopane, Poland

Abstract

Some1R,4R-2-(4-phenylbenzylidene)-p-methane-3-one derivatives containing the ether or ester linking group between benzene rings of the arylidene fragment have been studied as chiral dopants in ferroelectric liquid crystal systems based on the eutectic mixture (1:1) of two phenylbenzoate derivatives (see paper for formula) The ferroelectric properties of these compositions (spontaneous polarization, rotation, viscosity, smectic tilt angle as well as quantitative characteristics of their concentration dependences) were compared with those for systems including chiral dopants containing no linking group. Ferroelectric parameters of the induced ferroelectric compositions studied have been shown to depend essentially on the presence of the linking group between benzene rings and its nature as well as on the number of the benzene rings in the rigid molecular core of the chiral dopants used. For all ferroelectric liquid crystal systems studied, the influence of the chiral dopants on the thermal stability of N*, SmA and SmC* mesophases has been quantified. The influence of the linking group nature in the dopant molecules on the characteristics of the systems studied is discussed taking into account results of the conformational analysis carried out by the semi-empirical AM1 and PM3 methods.

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E. V. Popova, Lidiya A. Kutulya, V. V. Vashchenko, Mikhail N. Pivnenko, A. I. Krivoshey, and A. P. Fedoryako "Ferroelectric liquid crystal mixtures containing chiral ether and ester compounds with the 2-arylidene-p-menthan-3-one skeleton", Proc. SPIE 4759, XIV Conference on Liquid Crystals: Chemistry, Physics, and Applications, (27 June 2002); https://doi.org/10.1117/12.472142

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