Cinnamate-functionalized hyperbranched polymer as liquid crystal photo-alignment layer |
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Authors: | Bin Jun Shen Zheng Xie Ya Ning He Yan Qing Lian |
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Institution: | Institute of Polymer Research, Department of Chemical Engineering, Laboratory of Advanced Materials, Tsinghua University, Beijing 100084, China |
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Abstract: | In this work, 4-methoxylcirmamoyl chloride was reacted with a commercial hyperbranched polymer (Boltom~TM H30) to prepare a hyperbranched photosensitive polymer (H30-Ci). The polymer was characterized by UV absorption spectrum and 1H-NMR spectrum. After processed by Linearly Polarized Polymerization (LPP) method, the spin-coated films of H30-Ci were used as photo-alignment layers to assemble liquid crystal (LC) cells containing nematic liquid crystal (5CB). The observation by polarized microscope showed that the H30-Ci blended with a linear polymer (BP-AN-Ci) photo-alignment layers could align LC molecules in a very uniform way. |
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Keywords: | Hyperbranched polymer Photo-alignment layer Linearly polarized polymerization (LPP) Liquid crystal display |
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