Anchoring and Alignment Behavior of Liquid Crystals on Poly(vinyl cinnamate) Thin Films Treated in Various Ways

  • Lee, Taek-Joon (Polymer Research Institute, Department of Chemistry, National Research Lab for Polymer Synthesis & Physics, Center for Integrated Molecular Systems, BK School of Molecular Science, Pohang University of Science and Technology (POSTECH)) ;
  • Hahm, Suk-Gyu (Polymer Research Institute, Department of Chemistry, National Research Lab for Polymer Synthesis & Physics, Center for Integrated Molecular Systems, BK School of Molecular Science, Pohang University of Science and Technology (POSTECH)) ;
  • Lee, Seung-Woo (Polymer Research Institute, Department of Chemistry, National Research Lab for Polymer Synthesis & Physics, Center for Integrated Molecular Systems, BK School of Molecular Science, Pohang University of Science and Technology (POSTECH)) ;
  • Ree, Moon-Hor (Polymer Research Institute, Department of Chemistry, National Research Lab for Polymer Synthesis & Physics, Center for Integrated Molecular Systems, BK School of Molecular Science, Pohang University of Science and Technology (POSTECH))
  • Published : 2006.10.13

Abstract

Thin films of poly(vinyl cinnamate) (PVCi) were prepared on indium tin oxide (ITO) glass and silicon substrates by conventional spin coating and subsequent drying process. The thicknesses of the films ranged 50-120 nm. The films' surface was treated by rubbing, ultraviolet exposure or their combinations in various ways with changing rubbing strength and exposure dose. These films were examined in detail in the aspects of surface morphology and chain orientation. Further, the anchoring and orientation behaviors of liquid crystals on the film surfaces were investigated. All the results will be discussed in detail.

Keywords