한국정보디스플레이학회:학술대회논문집

한국정보디스플레이학회 (The Korean Infomation Display Society)
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Dimerization Behavior of Cinnamate Group attached to Flexible Polymer Backbone and Its Application to Liquid Crystal Alignment

  • Sung, Shi-Joon (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology) ;
  • Cho, Ki-Yun (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology) ;
  • Hah, Hyun-Dae (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology) ;
  • Kim, Won-Sun (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology) ;
  • Jeong, Yong-Cheol (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology) ;
  • Park, Jung-Ki (Dept. of Chem. and Biomolecular Eng., Korea Advanced Institute of Science and Technology)
  • 발행 : 2004.08.23
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초록

Cinnamate group is well-known for the dimerization reaction by ultra-violet irradiation and cinnamate polymers are studied for photo-alignment materials. The cinnamate groups of flexible polymer are found to produce LC alignment parallel to polarization direction of ultra-violet light, which is contrary to the LC orientation on conventional cinnamate polymers. The un-reacted cinnamate groups in the flexible polymer are also found to participate in cycloadducts formation by additional thermal reaction that preserves the orientation of cycloadducts, leading to the enhancement of thermal stability of LC alignment.

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