Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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The Characteristics of Photo-alignment with Photo-crosslinkable Polyimide

광 가교성 폴리이미드의 광배향 특성

  • Shin, Dong-Muyng (Dept. of Chemical Engineering, Hongik University) ;
  • Cho, Sun-Ju (Dept. of Chemical Engineering, Hongik University) ;
  • Shon, Byoung-Choung (Dept. of Chemical Engineering, Hongik University) ;
  • Choi, Jeong-Woo (Dept. of Chemical Engineering, Sogang University) ;
  • Yi, Mi-Hie (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Choi, Kil-Yeoung (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • 신동명 (홍익대학교 화학공학과) ;
  • 조선주 (홍익대학교 화학공학과) ;
  • 손병청 (홍익대학교 화학공학과) ;
  • 최정우 (서강대학교 화학공학과) ;
  • 이미혜 (한국화학연구소 화학소재단 1팀) ;
  • 최길영 (한국화학연구소 화학소재단 1팀)
  • Published : 1999.03.31
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Abstract

Photo-crosslinkable polyimide(PI) which contains CF3 moiety was synthesized. Polarized UV light transformed ketone group of PI to hydroxyl group, which was confirmed by IR and UV-visible spectroscopy. We investigated the dichroic UV-absorption before and after photo-reaction with linearly polarized light. In particular we have attempted to clarify the relationship between the anisotropy of surface region and surface azimuthal anchoring energy and knew that the anchoring energy of photo-alignment PI is comparable with that of mechanical rubbing.

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