| 초록 |
A series of sulfonated poly(arylene ether sulfone) (PAES#, # is the feed monomer ratio of 3,3’-disulfonate-4,4’-dichlorodiphenylsulfone) derivatives were synthesized to investigate liquid crystal (LC) alignment property of these polymer films. These polymer films exhibited good optical transparency in the visible light region. The LC cells made from the rubbed PAES# films showed the homogeneous planar LC alignment with parallel direction with respect to the rubbing direction. The LC cells having pretilt angles from approximately 3o for twisted nematic (TN) to 0o for planar switching mode were obtained from these PAES# films having molar contents of sulfonate groups in the ranges of 0 to 70 mole %, respectively. The electro-optical characteristics of the LC cells fabricated with the PAES# films as good as those fabricated from rubbed polyimide films. We also found that the LC cells made from PAES# films exhibited good thermal stability. |
