Journal
LIQUID CRYSTALS
Volume 46, Issue 2, Pages 299-308Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2018.1499147
Keywords
FLCs; AFLCs; synthesis; phase transitions; enthalpies; helical pitch
Funding
- Military University of Technology [RMN 08-972]
- National Science Centre [UMO-2015/19/D/ST5/02730]
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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. [GRAPHICS] .
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