화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터)
권호 43권 1호
발표분야 고분자합성
제목 Synthesis and properties of photo-polymerizable smectic liquid crystal monomer for thin film polarizer
초록 The polarizer is the essential optical element in LCDs. Conventional polarizers show limited thermal stability, low resistivity against solvents and large thickness. To overcome these limitations, thin film polarizers are in demand. One possible approach is based on the highly ordered guest-host system, in which the anisotropic absorption of light is achieved by aligning a dichroic dye (guest) in the cooperative motion of the LC (host) molecules. A new reactive LC monomer was designed and synthesized, which contains photo-polymerizable acrylate groups. To characterize the monomer, 1H-NMR, FT-IR, DSC and POM were used. The monomer exhibited highly ordered smectic phase at relatively low temperature. We fabricated thin film polarizer in a sandwich cell having rubbed alignment layers. High dichroic ratio (DR=20.7), order parameter (S=0.87) and polarization efficiency (PE>99%) were determined by polarized UV/Vis spectroscopy, which is much higher than the nematic thin film polarizers.
저자 Ye Yang, He Rui, 이명훈
소속 Chonbuk National Univ.
키워드 photo-polymerizable; smectic; liquid crystal; polarizer
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