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ABSTRACT
Most liquid crystals with a C3 symmetry have so far been discotic systems, e.g., triphenylenes. In the context of calamitic systems research has concentrated on triptycenes and to a lesser extend on silatranes. In this contribution we report our investigations of cholesteric silatrane systems, which have been obtained by connecting a tribenzylsilatrane core to cholesteric groups via alkyl and siloxane spacer groups.
Notes
a ΔH = enthalpy of the transition, ΔCp = heat capacity of glass transition, Cr = crystalline, SmC* = chiral smectic C, SmA = smectic A, N* = chiral nematic, Iso = isotropic liquid, Tg = glass transition temperature; Comp = compound.