Phase transition behavior and structure of the thermotropic liquid crystal 6-{[(4 '-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne
文献类型：期刊论文
| 作者 | Liu, Leijing; Geng, Jianxin; Yang, Junliang; Li, Gao; Zhou, Enle; Lam, Jacky Wing Yip; Tang, Benzhong |
| 刊名 | CRYSTAL RESEARCH AND TECHNOLOGY
 |
| 出版日期 | 2006-09-01 |
| 卷号 | 41期号:9页码:914-918 |
| 关键词 | Thermotropic Liquid Crystal Phase Transition Structure Metastable |
| ISSN号 | 0232-1300 |
| DOI | 10.1002/crat.200510695 |
| 英文摘要 | The phase transition behaviors and corresponding structures of 6-{[(4'-([(undecyl)carbonyl]oxy)biphenyl-4yl)carbonyl]oxyl-l-hexyne (A4EE11) were investigated using differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and wide angle X-ray diffraction (WAXD). In comparison with the published homologues, 5- [(4'-heptoxy-biphenyl-4-yl)carbonyl]oxyl-1-pentyne (A3EO7) which shows a monotropic smectic A (SmA) phase and a metastable monotropic smectic C (SmC) phase; 5-{ [(4'-heptoxybiphenyl-4-yl)oxy]carbonyl)- I-pentyne (A3E'O7) that exhibits three enantiotropic stable liquid crystalline (LC) phases, SmA phase, SmC phase and smectic X (SmX) phase; 5-{[(4'-heptoxy-biphenyl-4-yl)carbonyl]oxy}-1-undecyne (A9EO7) which has a monotropic SmA phase and a metastable crystal phase, A4EE11 integrates the enantiotropy, monotropy and metastability of the LC phases of those three compounds. Upon cooling from isotropic state to room temperature, in the temperature range of 62.0 to 58.5 degrees C, A4EE11 shows an enantiotropic smectic A (SmA) phase with a layer spacing d=32.69 angstrom. Further lowering the temperature, it enters into a metastable monotropic smectic B (SmB) phase with a longer layer spacing d=34.22 angstrom which has a tendency towards crystallization. The metastability of the liquid crystalline phase may associate to the linkage order of the ester bridge between the mesogenic core and the flexible spacer. (C) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| 语种 | 英语 |
| WOS记录号 | WOS:000240369100015 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59107]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Gao |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, 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 | Liu, Leijing,Geng, Jianxin,Yang, Junliang,et al. Phase transition behavior and structure of the thermotropic liquid crystal 6-{[(4 '-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne[J]. CRYSTAL RESEARCH AND TECHNOLOGY,2006,41(9):914-918. |
| APA | Liu, Leijing.,Geng, Jianxin.,Yang, Junliang.,Li, Gao.,Zhou, Enle.,...&Tang, Benzhong.(2006).Phase transition behavior and structure of the thermotropic liquid crystal 6-{[(4 '-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne.CRYSTAL RESEARCH AND TECHNOLOGY,41(9),914-918. |
| MLA | Liu, Leijing,et al."Phase transition behavior and structure of the thermotropic liquid crystal 6-{[(4 '-{[(undecyl)carbonyl]oxy}biphenyl-4yl)carbonyl]oxy}-1-hexyne".CRYSTAL RESEARCH AND TECHNOLOGY 41.9(2006):914-918. |
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来源：化学研究所
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