| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 99 === This report is divided into two parts: the first, series I, II respectively the ligands 2, 4a-4c, and their complexes 1, 3a-3c. Synthesis, characterization and mesomorphic properties of new mesogenic derivatives based on 3-hydroxy-3-(naphthalen-2-yl) acrylaldehyde. The second part is the organic liquid crystal based on triketone.
All organic derivatives were characterized by 1H-NMR and 13C-NMR spectroscopy and elemental analysis.Their physical properties were characterized by optical microscopy, differential scanning calorimetry, and temperature-dependent powder X-ray diffraction measurements.
In series I, ligands 2 (n = 1, 4, 8, 12, 16) and complexes 1 (n = 8, 12, 16) were exhibited Colh phase, and series II has more stable mesomorphic properties, is also exhibited Colh phase. Arrange through theoretical evaluation, with the MASS and IR, to proved Cu2+ ion formed binuclear complexes.
Finally, in series III, we changes of alkoxy chain and increase the-OH functional group of amine, to contrast with literature. Ligands 5a (n = 14, 16) exhibited SmC phase and 5b (n = 8, 10, 12, 14, 16) exhibited SmA phase.
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