Isotropic cubic phase organized by chiral molecular recognition

We investigated property-structure relations in a dichiral compound which e xhibits an optically isotropic phase (IsoX). Slight modification of the mol ecular structure except the chain length suppressed the IsoX phase. A phase diagram between enantiomers suggests that chiral recognition induces the I soX phase. A miscibility study between the dichiral compound (R, S) and a h ydrazine derivative (BABH8) with a cubic phase was performed Both the IsoX phase and the cubic phase of BABH8 were suppressed. while the SmC* phase of (R, S) was miscible with the SmC phase of BABH8. The phase diagram reflect s the competition between different intermolecular interactions. We discuss the novel chiral effect on mesophase formation.