Related Experiment Video
Updated: Jun 23, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Recovery of a reversed phase sequence in one ternary liquid-crystal-mixture system
Shun Wang1, Lidong Pan, B K McCoy
1School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Abstract:
The nOHFBBB1M7 (n=10) compound, 10OHF, shows a reversed SmC{FI2}-SmC phase sequence, unique among all known antiferroelectric liquid crystals. This reversed phase sequence is stabilized when 10OHF is doped with 9OTBBB1M7(C9) or 11OTBBB1M7(C11). In contrast, doping of the homologous members ( n=9 , 11, or 12) eliminates the SmC{FI2} phase. One 10OHF/11OHF mixture without the SmC{FI2} phase was selected for further studies. By adding C9 into this particular mixture, the reversed phase sequence is revived. To our surprise, even though 11OHF destabilizes the SmC_{FI2} phase in binary mixtures with 10OHF, it significantly increases the SmC_{FI2} temperature range in the 10OHF/11OHF/C9 ternary mixtures.
Related Concept Videos
Phase Diagrams of Ternary Systems
Thin-Layer Chromatography (TLC): Overview
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
Recrystallization: Solid–Solution Equilibria
Racemic Mixtures and the Resolution of Enantiomers
SN1 Reaction: Stereochemistry
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
High-Performance Liquid Chromatography: Introduction
In HPLC, two phases play a critical role in the separation process:

