USE OF OPTICALLY ACTIVE 1,3-DIOXOLANE-4-CARBOXYLATES AS DOPES IN LIQUID-CRYSTAL MIXTURES, LIQUID-CRYSTAL

摘要

Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel, optically active 1,3-dioxolane-4-carboxylates. Optically active, mesogenic 1,3-dioxolane-4-carboxylates are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having large electroclinic coefficients. Their particular advantage is that they induce a helix of very large pitch, meaning that helix compensation by further dopes is unnecessary. In addition, 1,3- dioxolane-4-carboxylates exhibit high UV stability. The 1,3- dioxolane-4-carboxylates of the present invention are of the following general Formula (I):