ABSTRACT
A homologous series of chiral three ring esters were synthesised and their properties were studied. The materials possess an antiferroelectric phase (SmCA*) or/and a ferroelectric phase (SmC*), which was confirmed by observations of microscopic textures using a polarising optical microscope. The phase transition temperatures and enthalpies were checked by differential scanning calorimetry. The helical pitch was measured by a spectrophotometry method. For all cases the helix is right-handed, in the antiferroelectric phase the helical pitch increases with temperature, and in the ferroelectric phase the helical pitch is short.
Graphical Abstract
![](/cms/asset/feaf7921-c535-4fcf-acb2-8e0a82ef03b0/tlct_a_1499147_uf0001_oc.jpg)
Acknowledgments
I want to thank Mr. Karol Ofiara for the help with synthesis of some esters.
Disclosure statement
No potential conflict of interest was reported by the authors.
Supplementary material
Supplemental data for this article can be accessed here.