Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Alignments of Reactive Mesogen Using Rubbed Glass Substrates

러빙한 유리 기판을 이용한 반응성 액정 배향

  • Lee, Mongryong (Dept. of Advanced Materials Engineering for Information and Electronics, Materials Research Center for Information Display, Kyung Hee University) ;
  • Bae, Jin Woo (Dept. of Advanced Materials Engineering for Information and Electronics, Materials Research Center for Information Display, Kyung Hee University) ;
  • Kim, Anna (Dept. of Advanced Materials Engineering for Information and Electronics, Materials Research Center for Information Display, Kyung Hee University) ;
  • Yun, Hyeong Seuk (Dept. of Advanced Materials Engineering for Information and Electronics, Materials Research Center for Information Display, Kyung Hee University) ;
  • Song, Kigook (Dept. of Advanced Materials Engineering for Information and Electronics, Materials Research Center for Information Display, Kyung Hee University)
  • 이몽룡 (경희대학교 정보전자신소재공학과 영상정보소재기술연구센터) ;
  • 배진우 (경희대학교 정보전자신소재공학과 영상정보소재기술연구센터) ;
  • 김안나 (경희대학교 정보전자신소재공학과 영상정보소재기술연구센터) ;
  • 윤형석 (경희대학교 정보전자신소재공학과 영상정보소재기술연구센터) ;
  • 송기국 (경희대학교 정보전자신소재공학과 영상정보소재기술연구센터)
  • Received : 2014.08.28
  • Accepted : 2014.10.21
  • Published : 2015.01.25
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Abstract

Alignments of photo-reactive mesogen were induced using bare glass substrates without a polymer alignment layer. It was found by using polarized FTIR spectroscopy, polarized microscopy, and birefringence measurement experiments that the reactive mesogen could be aligned along the rubbing direction although the glass substrate without an alignment layer was used. The induction mechanism of the rubbed bare glass is ascribed to that polymers from rubbing clothes are coated on the glass substrate along the rubbing direction and lead the alignment of liquid crystals through intermolecular interactions.

고분자 배향막이 없는 순수 유리 기판을 이용하여 광반응성 액정의 배향을 유도하였다. 유리 기판을 러빙하여 액정 배향을 유도한 경우, 고분자 배향막을 사용하여 유도한 경우와 같이 액정을 러빙 방향과 평행하게 배향할 수 있는 것을 편광 FTIR, 편광현미경, 복굴절 측정 등의 실험을 통해서 알 수 있었다. 순수 유리 기판을 러빙하여 액정 배향을 유도하는 메커니즘은 러빙 과정에서 유리 표면에 묻어나온 고분자들이 러빙 방향으로 늘어서 분자간 상호작용을 통하여 액정 분자들의 배향을 유도하는 것이다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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