한국정보디스플레이학회:학술대회논문집

한국정보디스플레이학회 (The Korean Infomation Display Society)
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Frustration of Rod-Disc Molecule in Reorientation under Vertical Electric Field

  • Jung, Jun-Ho (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Ha, Kyung-Su (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Chae, Mi-Na (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Park, Seul-Ki (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Song, Eun-Gyoung (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Lee, Myong-Hoon (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Jeong, Kwang-Un (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University) ;
  • Lee, Seung-Hee (Polymer BIN Fusion Research Center, Dept. of Polymer Nano Science and Technology, Chonbuk National University)
  • 발행 : 2009.10.12
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초록

New rod-disc liquid crystal (LC) molecule RD12 (12 is the number of carbon atoms between the rod and disc mesogenic liquid crystals) was synthesized via the chemical attachment of six cyanobiphenly calamitic mesogens linked to the triphenyl discotic mesogen with six alkyl chain linkage. Aligning characteristics associated with homogenous alignment is investigated at first and then field-dependent molecular reorientation under a vertical electric field is studied. Interestingly, they show abnormal slow molecular transition from initiate state (no electric field condition) to certain voltage. In this condition, we observe the molecular competition during reorientation. However, once a tilting direction of disk molecules are defined, the frustration is not observed anymore. The origin of this phenomenon is explained with a suggested model for the first time.

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