Search academic texts

Information × Registration Number 0300U005114, 0100U002986 , R & D reports Title Liquid crystalline smectic systems with ferro- and antiferroelectric properties popup.stage_title Отримання хіральних компонентів сегнетоелектричних РК композитів складноефірного типу з підвищеною розчинністю в ахіральних смектичних С матрицях, що забезпечують мінімальну депресію температури фазового переходу смектик А - смектик С*. Head Kutulya Lidiya Antonivna, Registration Date 22-12-2000 Organization Institute for Single Crystals Scientific and Technology Association "Institute for Single Crystals" National Academy of Sciences of Ukraine popup.description2 Isomeric chiral E- and Z-2-(4-phenylbenzilidene)-n-menthane-3-ons with terminal heptyl oxysubstituent are found to induce spontaneous polarization of the opposite signs in achiral ester-type smectic-C liquid crystals (LC), owing to different orientation of lateral carbonyl dipole in their molecules, with respect to the long molecular axis. Revealed is an essential influence of different molecule shape (quasi-cylindrical or statistically quasi-spherical) of isomeric E- and Z-chiral dopants on the rotational viscosity and director re-orientation time in the obtained ferroelectric LC composites. The obtained non-trivial data widen the knowledge on the relation between the properties of induced LC ferroelctrics and the molecular structure of the components. Product Description popup.authors popup.nrat_date 2020-04-03 Close