Novel optical anisotropy of a liquid crystalline "cubic" phase in a discotic crown ether derivative
文献类型：期刊论文
| 作者 | Zhang, Ben1; Wang, Jun1; Yu, Zhen-Qiang2; Yang, Shuang1; Shi, An-Chang3; Chen, Er-Qiang1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2014 |
| 卷号 | 2期号:26页码:5168-5175 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c4tc00382a |
| 英文摘要 | To obtain a columnar structure with nucleophilic channels embedded in the column centres, we synthesized a series of new crown ether derivatives ( compounds 1, 2, and 3) which are composed of a core of dibenzo-24-crown-8 symmetrically surrounded by four identical substituents. Experimental results indicate that compounds 2 and 3 with smaller substituents around the dibenzo-24-crown-8 core form only crystalline phases, while compound 1 bearing larger dendron substituents on the molecular periphery shows multiple liquid crystalline phase transitions. X-ray diffraction demonstrates that 1 can stack parallel to form a hexagonal columnar liquid crystalline (Col(h)) phase. A stable phase, which renders the diffraction features of a body-centred cubic (BCC) structure and shows unexpected optical anisotropy, is observed in between the Col(h) and the isotropic state. On the basis of further support from model calculations, we propose that the optically anisotropic "BCC" structure is an array of ellipsoidal domains placed in the BCC lattice with their long axis along the [111] direction, which results from the periodic density fluctuation of the columns. |
| 语种 | 英语 |
| WOS记录号 | WOS:000337786900015 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52807]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Er-Qiang |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China 2.Shenzhen Univ, Shenzhen Key Lab Funct Polymers, Sch Chem & Chem Engn, Shenzhen 518060, Peoples R China 3.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada |
| 推荐引用方式 GB/T 7714 | Zhang, Ben,Wang, Jun,Yu, Zhen-Qiang,et al. Novel optical anisotropy of a liquid crystalline "cubic" phase in a discotic crown ether derivative[J]. JOURNAL OF MATERIALS CHEMISTRY C,2014,2(26):5168-5175. |
| APA | Zhang, Ben,Wang, Jun,Yu, Zhen-Qiang,Yang, Shuang,Shi, An-Chang,&Chen, Er-Qiang.(2014).Novel optical anisotropy of a liquid crystalline "cubic" phase in a discotic crown ether derivative.JOURNAL OF MATERIALS CHEMISTRY C,2(26),5168-5175. |
| MLA | Zhang, Ben,et al."Novel optical anisotropy of a liquid crystalline "cubic" phase in a discotic crown ether derivative".JOURNAL OF MATERIALS CHEMISTRY C 2.26(2014):5168-5175. |
入库方式： OAI收割
来源：化学研究所
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