"We have a new liquid crystal that forms helical structures… and what next?"

by Dr Anna Drzewicz (IFJ PAN)

Thursday 19 Nov 2020, 11:00 → 13:00 Europe/Warsaw

ZOOM

Abstract:
Although the history of liquid crystals is over 130 years old, the quest for new mesogens with the desired, interesting properties and sophisticated molecular structures, goes on in hundreds of research laboratories worldwide. Today a novel chiral mesogen that belongs to this class, capable of assuming antiferroelectric smectic phase will be presented. Its phase polymorphism, and relaxation and vibrational dynamics will be described. Such substances behave differently if heated/cooled with various rates. In general, we are aiming at the understanding of many factors influencing their structural and dynamic properties, as well as their ability to form glass, including glasses of phases other than that of isotropic liquid. Research was being conducted by complementary methods, e.g. differential scanning calorimetry (DSC), polarized optical microscopy (POM), Fourier-transform infrared spectroscopy (FTIR) and broadband dielectric spectrometer (BDS), also with an attachment enabling high pressure measurements.
 

Drzewicz19lis2020.pdf