Synthesis and properties of ferro- and antiferroelectric esters with a chiral centre based on (S)-(+)-3-octanol. Issue 2 (26th January 2019)

• Record Type: Journal Article
• Authors: Żurowska, Magdalena; Filipowicz, Marek; Czerwiński, Michał; Szala, Mateusz
• Is Part Of: Liquid crystals. Volume 46:Issue 2(2019)
• Page Start: 299
• Page End: 308
• Publication Date: 2019-01-26
• Subjects: FLCs -- AFLCs -- synthesis -- phase transitions -- enthalpies -- helical pitch; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2018.1499147
• Languages: English
• ISSNs: 0267-8292

Abstract

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: