Ferroelectric compounds with chiral (S)-1-methylheptyloxycarbonyl terminal chain – their miscibility and a helical pitch

Abstract

Compounds with the same chiral terminal chain but different structure of rigid core and non-chiral terminal chain were added to basic highly tilted ferroelectric compound in the aim of establishing whether the miscibility of phases, especially ferroelectric phase, exists in these compounds and what are the helical pitch and tilt angle temperature dependence in bicomponent systems. In certain systems, we obtained a mixture with very short helical pitch at broad temperature range of ferroelectric phase, which open opportunities for the formulation of multicomponent mixtures for fast switching ferroelectric liquid crystals modes.

Keywords:

• liquid crystals
• ferroelectric phase
• miscibility
• optical microscopy
• helical pitch
• tilt angle

Additional information

Funding

This work was supported by the NCN [grant number UMO-2011/03/N/ST4/0136] and [grant number RMN/08-964/2014/WAT] ‘Orthoconic ferroelectric mixtures’.