A series of hexaynylphenylbenzene incorporated with ester group (OCOR and COOR) into flexible alkyl chains was synthesized. Relative to alkyl chains, ester groups with richer electron withdrawing power were expected to increase intermolecular π-π interactions between phenyls of hexaynylphenylbenzene. Hence, the discotic liquid crystal properties of the synthesized ester containing compounds were studied. Also, comparing with reported previously 11 , we introduced an additional ester group into one alkyl chain of hexaynylpheneylbenzene. The liquid crystal characteristics and the biaxial optical property were discussed. The structure-property relationship of liquid crystalline of X shaped molecules derived compounds behaviors was also discussed. In the second series, cyclohexane was used to replace one phenyl group of biphenyl. Cyclohexane can take advantage of boat form constantly flip gesture in the space, and increase terminal chain disturbance characteristics to do reduce the effectiveness of the melting point and clearing points. The liquid crystal behaviors was studied, and further biaxial optical properties was verified by the powder x-ray diffraction. The second part of the thesis, the chiral additives nematic liquid crystal molecules were synthesized to form nanoparticles. And then polymerized by UV curing to form nano-powders, the mutual nanoparticles won’t be affected by heat to aggregation was been approved. The results were studied by dynamic light scattering (DLS) and transmission electron microscopy (TEM). And the technology of the preparation of 70-80 nm sized nanoparticles was mature.