Citation: Bin Jun Shen, Zheng Xie, Ya Ning He, Yan Qing Lian. Cinnamate-functionalized hyperbranched polymer as liquid crystal photo-alignment layer[J]. Chinese Chemical Letters, ;2008, 19(9): 1131-1134. doi: 10.1016/j.cclet.2008.06.007 shu

Cinnamate-functionalized hyperbranched polymer as liquid crystal photo-alignment layer

Institute of Polymer Research, Department of Chemical Engineering, Laboratory of Advanced Materials, Tsinghua University, Beijing 100084, China

Received Date: 23 April 2008

Fund Project: This research was financially supported by the National Natural Science Foundation of China (No. 50103005). Thanks for Professor Shi Wenfang of University of Science and Technology of China to supply the hyperbranched polymer (H30).

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.
- Hyperbranched polymer,
- Photo-alignment layer,
- Linearly polarized polymerization (LPP),
- Liquid crystal display
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