Optically isotropic ferroelectric liquid crystal phase

Antal Jakli ,Guangxun Liao ,Strahinja Stojadinovic 2,Samuel Sprunt 2,Wolfgang Weissflog 3,Gerhard Pelzl 3

Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA
Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH 44242
2Department of Physics, Kent State University, Kent, OH 44242
3Institut für Physikalishe Chemie, Martin Luther Universitat, Halle-Wittenberg, Mühlpforte 1, D-06108, Halle (Saale), Germany

We show that the optically isotropic phase observed recently in a bent core liquid crystal material, 4-chlororesorcinol bis[4-(4-n-dodecyloxybenzoyloxy)benzoate], is ferroelectric. Polarizing microscopic, electric current and dynamic light scattering studies reveal that the structure in the ferroelectric phase consists of weakly interconnected orthoconic racemic smectic (SmCaPF) granules with random layer directions.

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