LIQUID-CRYSTALS BASED ON 2-FLUOROPYRIMIDINE AND 2-FLUOROPYRIDINE - SYNTHESIS, DIELECTRIC ANISOTROPY AND PHASE-BEHAVIOR

Communication: Polar liquid crystals with strongly positive dielectric anisotropies are of continuing interest to the display industry becau se they help to lower both the operating voltage and the total power c onsumption of LCDs in portable devices. Fluorinated heterocyclic mater ials (Figure, right, MG = mesogenic group) are shown here to exhibit i mproved mesophase properties and higher dielectric and optical anisotr opies than commonly used materials based on purely fluorine substitute d moieties (Figure, left).