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Updated: May 14, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
A new family of four-ring bent-core nematic liquid crystals with highly polar transverse and end groups
Kalpana Upadhyaya1, Venkatesh Gude, Golam Mohiuddin
1Chemistry Department, Assam University, Silchar-788011, Assam, India, phone 919435522541, fax 913842270806.
Abstract:
Non-symmetrically substituted four-ring achiral bent-core compounds with polar substituents, i.e.., chloro in the bent or transverse direction in the central core and cyano in the lateral direction at one terminal end of the molecule, are designed and synthesized. These molecules possess an alkoxy chain attached at only one end of the bent-core molecule. The molecular structure characterization is consistent with data from elemental and spectroscopic analysis. The materials thermal behaviour and phase characterization have been investigated by differential scanning calorimetry and polarizing microscopy. All the compounds exhibit a wide-ranging monotropic nematic phase.
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