THE SYNTHESIS OF A CHOLESTERIC DIACRYLATE USING ENZYMATIC RESOLUTION

Chiral nematic or cholesteric diacrylates are used to form cholesteric networks. In order to be able to investigate the effect of the positi on of the chiral center in the spacer of these molecules on the molecu lar pitch, we synthesized a chiral liquid crystalline diacrylate whose chiral center was close to the mesogenic group. To obtain high enanti omeric excess, we applied an enzymatic resolution on one of the interm ediates. The diacrylate showed a larger cholesteric pitch and a smalle r cholesteric temperature range than other related compounds in which the chiral center of the same structure is positioned Further away fro m the mesogenic group.