Synthesis, Characterisation And Determination Of Mesophase Transition Of Cyclotriphosphazene Derivatives With Azo Linking Unit
A series of intermediates were synthesised via azo coupling reactions to give the alkylated compounds with one azo linking unit, 2a-c and with two azo linking units, 5a-c. These intermediates were subjected to further monosubstitution and hexasubstitution reactions with cyclotriphosphazene to produc...
| 第一著者: | |
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| フォーマット: | 学位論文 |
| 言語: | 英語 |
| 出版事項: |
2017
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| 主題: | |
| オンライン･アクセス: | http://eprints.usm.my/45410/ |
| 要約: | A series of intermediates were synthesised via azo coupling reactions to give the alkylated compounds with one azo linking unit, 2a-c and with two azo linking units, 5a-c. These intermediates were subjected to further monosubstitution and hexasubstitution reactions with cyclotriphosphazene to produce a series of final compounds 7a-f. These compounds were characterised using FT-IR (Fourier Transform Infrared), 1D and 2D NMR (Nuclear Magnetic Resonance) spectroscopy and CHN elemental analysis. Intermediates 2d-f and 4a-c were found to be mesogenic with nematic and smectic phases, as determined under the POM (Polarised Optical Microscopy). |
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