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Details for article 65 of 131 found articles
| Title: |
New mesogen with thermotropic cubic phase: 3,4,5-tris-(11,11,12,12,13,13,14,14,15,15,16,16,16-tridecafluorohexadecyloxy)benzoic acid |
| Author: |
Zhou, Xiaoli Narayanan, T. Li, Quan |
| Appeared in: |
Liquid crystals |
| Paging: | Volume 34 (2007) nr. 11 pages 1243-1248 |
| Year: |
2007-11 |
| Contents: |
A new mesogen, 3,4,5-tris(11,11,12,12,13,13,14,14,15,15,16,16,16-tridecafluoro-hexadecyloxy)benzoic acid, with a thermotropic cubic phase was synthesized. The phase behaviour of the fluorinated compound and its corresponding non-fluorinated analogue was investigated by differential scanning calorimetry, polarizing optical microscopy, and synchrotron small-angle X-ray diffraction. The fluorinated compound, which contains three partially perfluorinated alkoxy moieties and one carboxylic acid group capable of forming hydrogen bonding, exhibits a very interesting sequence of isotropic, cubic and hexagonal columnar phases, whereas its non-fluorinated compound does not have a liquid crystalline phase. The cubic phase exists over a wide temperature range (from ∼200°C to ∼30°C on cooling) and is hence amenable to various physical measurements and potential applications. The ability to self-assemble molecules into ordered superstructure via both partially perfluorinated chains and hydrogen bonding provides new insight for the development of novel liquid crystalline materials. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 65 of 131 found articles
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