Shear induced molecular alignments of a side-chain liquid crystalline polyacetylene containing biphenyl mesogens
文献类型：期刊论文
| 作者 | Geng, JX; Zhao, XG; Zhou, EL; Li, G; Lam, JWY; Tang, BZ |
| 刊名 | POLYMER
 |
| 出版日期 | 2003-12-01 |
| 卷号 | 44期号:26页码:8095-8102 |
| 关键词 | Liquid-crystalline Polymer Polyacetylenes Shear Orientation |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2003.10.044 |
| 英文摘要 | Mesomorphic properties of a side chain liquid crystalline polyacetylene, poly(11-{[(4'-heptyloxy-4-biphenylyl)carbonyl]oxy}-1-undecyne) (PA9EO7), are investigated using polarized optical microscope, X-ray diffraction, and transmission electron microscope. Polymer PA9EO7 forms enantiotropic smectic A and smectic B phases. It also exhibits an additional high order smectic phase, a sandwich structure consisting of different molecular packing of biphenyl mesogenic moieties from that of alkyl spacers and terminals, when it is prepared from its toluene solution. Shearing the polymer film at its smectic A phase generates banded texture with the alignment of the backbones parallel to the direction of shear force. While at its high order smectic phase, the mesogen pendants of the polymer are arranged parallel to the direction of shear. The different mesomorphic behaviors arise from different molecular alignments influenced by the fluidity. (C) 2003 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000186949800036 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/79895]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, G |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Geng, JX,Zhao, XG,Zhou, EL,et al. Shear induced molecular alignments of a side-chain liquid crystalline polyacetylene containing biphenyl mesogens[J]. POLYMER,2003,44(26):8095-8102. |
| APA | Geng, JX,Zhao, XG,Zhou, EL,Li, G,Lam, JWY,&Tang, BZ.(2003).Shear induced molecular alignments of a side-chain liquid crystalline polyacetylene containing biphenyl mesogens.POLYMER,44(26),8095-8102. |
| MLA | Geng, JX,et al."Shear induced molecular alignments of a side-chain liquid crystalline polyacetylene containing biphenyl mesogens".POLYMER 44.26(2003):8095-8102. |
入库方式： OAI收割
来源：化学研究所
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