Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Effect of molecular weight on liquid crystal photoalignment by photosensitive polyester containing thrifluoromethyl moieties | |
其他题名 | 论文其他题名 |
Fei C. H.; Peng Z. H.; Lv F. Z.; Zhang L. L.; Yao L. S.; Xuan L.![]() | |
2006 | |
发表期刊 | Chinese Physics Letters
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ISSN | 0256-307X |
卷号 | 23期号:11页码:3029-3032 |
摘要 | We investigate the liquid-crystal (LC) alignment direction on photoalignment films formed from photosensitive polyester containing thrifluoromethyl moieties (PPDA) with various molecular weights by crossed polarized optical microscopy. It is found that LC alignment behaviour changes with molecular weight of PPDA. The LC alignment on PPDA irradiated films with the highest molecular weight is homogeneous, while those with low and intermediate molecular weights are homeotropic. However, surface morphologies show weak dependence on molecular weight. The surface are smooth and there is no clear morphological anisotropy on these aligned films observed by an atomic force microscope. The surface energies of the irradiated films are also measured by using an indirect contact-angle method where both surface energy and its polar component increase with increasing molecular weight. Different polar surface energies can be considered as a main reason for different alignment characteristics. |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/24925 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Fei C. H.,Peng Z. H.,Lv F. Z.,et al. Effect of molecular weight on liquid crystal photoalignment by photosensitive polyester containing thrifluoromethyl moieties[J]. Chinese Physics Letters,2006,23(11):3029-3032. |
APA | Fei C. H.,Peng Z. H.,Lv F. Z.,Zhang L. L.,Yao L. S.,&Xuan L..(2006).Effect of molecular weight on liquid crystal photoalignment by photosensitive polyester containing thrifluoromethyl moieties.Chinese Physics Letters,23(11),3029-3032. |
MLA | Fei C. H.,et al."Effect of molecular weight on liquid crystal photoalignment by photosensitive polyester containing thrifluoromethyl moieties".Chinese Physics Letters 23.11(2006):3029-3032. |
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