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Hydrogen bonded arylamide-linked cholesteryl dimesogenic liquid crystals: a study of the length and side chain effects
其他题名氢键稳定的线形芳酰胺连接的甾体二元液晶: 长度和侧链效应研究
Wang GT(王贵涛); Zhao X(赵新); Li ZT(黎占亭)
2011
发表期刊Tetrahedron
ISSN0040-4020
卷号67期号:1页码:48-57
摘要Dimesogenic compounds 1a-c, 2a-i, and 3, that are composed of a hydrogen bonding-induced straight arylamide spacer and two appended cholesterol groups, have been designed and synthesized. The backbones of the rigid spacers of 1a-c, 2a-i, and 3 contain one, three, and five benzene units, which bear two, six, and ten alkoxyl (methoxyl, n-octoxyl, or n-dodecoxyl) groups, respectively. The thermal and optical properties of the compounds are investigated by using the differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and powder X-ray diffraction (PXRD) analysis. It is revealed that la c exhibit one or two liquid crystalline (LC) phases, 2a-i exhibit no, one or two LC phases, while 3 exhibits one LC phase in a wide temperature range. Generally, the more and longer alkoxyl chains facilitate the formation of the LC phases at low temperature. Notably, compound 2g, which bears two methoxyl and four dodecoxyl groups, displays a blue-red color change during both the heating and cooling cycle. The result illustrates that dimesogens with large rigid spacers can exhibit different LC phases when long aliphatic chains are appended to balance the strong stacking of the rigid backbones. (C) 2010 Elsevier Ltd. All rights reserved.
学科领域物理有机化学
部门归属中科院上海有机化学研究所
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收录类别SCI
语种英语
WOS记录号WOS:000285701600003
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/20889
专题物理有机化学研究室
通讯作者Li ZT(黎占亭)
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GB/T 7714
Wang GT,Zhao X,Li ZT. Hydrogen bonded arylamide-linked cholesteryl dimesogenic liquid crystals: a study of the length and side chain effects[J]. Tetrahedron,2011,67(1):48-57.
APA 王贵涛,赵新,&黎占亭.(2011).Hydrogen bonded arylamide-linked cholesteryl dimesogenic liquid crystals: a study of the length and side chain effects.Tetrahedron,67(1),48-57.
MLA 王贵涛,et al."Hydrogen bonded arylamide-linked cholesteryl dimesogenic liquid crystals: a study of the length and side chain effects".Tetrahedron 67.1(2011):48-57.
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