Effect of molecular weight on liquid crystal photoalignment by photosensitive polyester containing thrifluoromethyl moieties

	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
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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