Synthesis and characterization of an inorganic-organic hybrid bent-core liquid crystal with a cubic silsesquioxane core
文献类型：期刊论文
| 作者 | Pan Qiwei; Chen Xiaofang; Shen Zhihao; Fan Xinghe; Zhou Qifeng |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2008-07-20 |
| 期号 | 7页码:703-707 |
| 关键词 | Poss Bent-core Liquid Crystal Inorganic-organic Hybrid |
| ISSN号 | 1000-3304 |
| 英文摘要 | An organic-inorganic hybrid bent-core liquid crystal (BCLC) with eight bent-core mesogens end-attached to inorganic polyhedral oligomeric silsesquioxanes (POSS) cores was synthesized and characterized to study how the inorganic cubic core May affect the liquid crystalline phase behavior and electro-optical properties of the BCLC. POSS-8BC was successfully synthesized by hydrosilylation reaction of Q(8)M(8)(II) and 3'-[4-(4-dodecyloxybenzoyloxy)benzoyloxy]-4-(10-undecen-1-yloxy)benzoyloxybiphenyl with P1 (dvs) as catalyst in high yield. Well-defined chemical structure of POSS-8BC was confirmed by NMR, IR, elemental analysis, and GPC. Liquid crystalline phase behavior of this compound was investigated by differential scanning calorimetry, 1D and 2D wide-angle X-ray diffractions, and small-angle X-ray scattering. Meanwhile, electro-optical characterization was carried out by applying a triangular wave electric field. Response current was measured, and texture change under the electric field was observed. Two bilayer antiferroelectric SmC phases call be confirmed for POSS-8BC. In the higher temperature LC phase, the arrangement of POSS cores in the layer is not ordered. It is a conventional SmCA2PA phase with layer thickness of 8.0 nm. In the lower temperature LC phase, layer thickness decreases to 7.7 nm. POSS cores from it two-dimensionally ordered structure between two bilayers. It is it bilayer SmCAPA phase with inorganic nano-size mesophase dispersed in it. To our best knowledge, it is the first antiferroelectric LC phase with inorganic nano-size mesophase dispersed in it. |
| 语种 | 英语 |
| WOS记录号 | WOS:000258755600013 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64021]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Pan Qiwei |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Minist Educ, Key Lab Polymer Chem & Phys,Beijing Natl Lab Mol, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan Qiwei,Chen Xiaofang,Shen Zhihao,et al. Synthesis and characterization of an inorganic-organic hybrid bent-core liquid crystal with a cubic silsesquioxane core[J]. ACTA POLYMERICA SINICA,2008(7):703-707. |
| APA | Pan Qiwei,Chen Xiaofang,Shen Zhihao,Fan Xinghe,&Zhou Qifeng.(2008).Synthesis and characterization of an inorganic-organic hybrid bent-core liquid crystal with a cubic silsesquioxane core.ACTA POLYMERICA SINICA(7),703-707. |
| MLA | Pan Qiwei,et al."Synthesis and characterization of an inorganic-organic hybrid bent-core liquid crystal with a cubic silsesquioxane core".ACTA POLYMERICA SINICA .7(2008):703-707. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。