Liquid crystalline (LC) polymers have attracted much attention because of great potential for advanced materials. It is important to control molecular order of LC polymers for functionalization. Molecular interactions, e. g., hydrogen bonding, ionic interaction, and charge transfer interaction, can be used to regulate the molecular order of liquid crystals. LB films and elastomers of LC polymers have been fabricated for optic devices. The application of LC polymers to optic and electronic materials have been studied mainly for side-chain LC polymers. Photoresponsive and non-linear optic materials have been prepared by incorporation of dye molecules into LC polymer matrices. LC polymers exhibiting the chiral smectic C phase show ferroelectricity.