Abstract
Orientational adsorption behavior of liquid crystalline (LC) molecule onto a rubbed polymer surface was evaluated by measuring the optical retardation of the rubbed substrate dipped in a solution in which a liquid crystal was dissolved by organic solvent. The LC molecules were adsorbed in the direction parallel to the rubbing direction. The adsorbed molecules were not easily desorbed even if the substrate was rinsed by pure solvent. The adsorption of molecules of which intermolecular interaction was larger reached the equivalent state at lower concentration of solution. This result indicates that a selective adsorption should occur at an interface between LC mixture and a substrate, that is, there should be some difference in the constituent fraction of LC between interface and bulk.
