Photoalignment of liquid crystals by a covalently attached self-assembled ultrathin film

	Photoalignment of liquid crystals by a covalently attached self-assembled ultrathin film
其他题名	论文其他题名
	Zhang L. L.; Sun X. D.; Liu Y. J.; Peng Z. H.; Xuan L.
	2012
发表期刊	Liquid Crystals
ISSN	0267-8292
卷号	39 期号:8 页码:983-991
摘要	In this paper, the polyanion-containing cinnamoyl group (PACSS-CF3) was self-assembled with diazoresin (DR) to form a kind of stable covalent ultrathin film by irradiation with 365 nm UV light. The photoalignment properties of the DR/PACSS-CF3 covalent film were investigated. The covalent film was found to have anisotropy after irradiation by 297 nm linearly polarised ultraviolet light (LPUVL), and could induce uniform alignment of liquid crystals (LCs). The pretilt angle of the LC was 2.5 degrees. The stability of the film was enhanced by the covalent bonds. The films were thermally stable to 180 degrees C. Polarised UV-Vis spectroscopy was utilised to investigate the photochemical process of the covalent film. It was found that cinnamoyl moieties parallel to the polarisation direction of the LPUVL were consumed by the photoreaction faster than those perpendicular to the polarisation direction. It can be concluded that the selective photoreaction induced the anisotropy of the films. The anisotropic films induced the homogeneous alignment of LC.
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/181722/24653
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang L. L.,Sun X. D.,Liu Y. J.,et al. Photoalignment of liquid crystals by a covalently attached self-assembled ultrathin film[J]. Liquid Crystals,2012,39(8):983-991.
APA	Zhang L. L.,Sun X. D.,Liu Y. J.,Peng Z. H.,&Xuan L..(2012).Photoalignment of liquid crystals by a covalently attached self-assembled ultrathin film.Liquid Crystals,39(8),983-991.
MLA	Zhang L. L.,et al."Photoalignment of liquid crystals by a covalently attached self-assembled ultrathin film".Liquid Crystals 39.8(2012):983-991.

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