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Multiple Polar and Non-polar Nematic Phases.

Stevie BrownEwan CruickshankJohn Mervyn David StoreyCorrie T ImrieDamian PociechaMagdalena M MajewskaAnna MakalEwa Gorecka
Published in: Chemphyschem : a European journal of chemical physics and physical chemistry (2021)
Liquid-crystal materials exhibiting up to three nematic phases are reported. Dielectric response measurements show that while the lower temperature nematic phase has ferroelectric order and the highest temperature nematic phase is apolar, the intermediate phase has local antiferroelectric order. The modification of the molecular structure by increasing the number of lateral fluorine substituents leads to one of the materials showing a direct isotropic- ferronematic phase transition.
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