Effect of achiral halogen-substituted bent-core molecules on the blue phases

The effects of molecule structure and concentration of achiral bent-core molecules on the blue phase liquid crystal stabilization have been investigated. Blue phase mixtures are formed doping bent-core molecules and BP temperature range is able to widen doping bent-core molecules with different subs...

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Bibliographic Details
Published in:Journal of molecular liquids 2018-08, Vol.263, p.399-405
Main Authors: Kemiklioglu, Emine, Chien, Liang-Chy
Format: Article
Language:English
Subjects:
Bent-core molecules
Blue phases
Bragg reflection
Dipole moments
Liquid crystals
Switching voltage
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Summary:The effects of molecule structure and concentration of achiral bent-core molecules on the blue phase liquid crystal stabilization have been investigated. Blue phase mixtures are formed doping bent-core molecules and BP temperature range is able to widen doping bent-core molecules with different substituents. Bent-core molecules with different substituents are found to cause a decrement in the threshold and turn-on voltages of the bent-core doped blue phase liquid crystal samples, as a result of the difference in their molecular shape and dipole moments. Use of bent core LC as dopants for a blue phase LC mixture led to a reduction of the driving voltage by more than 50%. •Use of bent-core (BC) molecules reduces the interfacial energy of the system.•The structure and concentration of achiral BC molecules affect temperature range.•Adding of BC molecules led to a reduction in the driving voltage by more than 50%.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2018.05.030