- 作者: 張簡國平
- 作者服務機構: 正修工商專校化學工程科
- 中文摘要: New alkene liquid crystals 4- [ oligo(ethylene oxide)/sub n/ monomethylether)carbonyl ] phenyl 4- [ 4(allyloxy) phenyl ] benzoate (MBPBEn, n=1-3), 4'- [ oligo(ethylene oxide)/sub n/ monomethylether)carbonyl ] biphenyl-4-yl 4- [ 4-(allyloxy)phenyl ] benzoate (MBPBPEn, n=1-3), (S)-4- [ (2-methyl-1-butoxy)carbonyl ] phenyl 4- [ 4-(allyloxy) phenyl ] benzoate (MBPBKA), and (S)-4'- [ (2-methyl-1- butoxy)carbonyl ] biphenyl-4-yl 4- [ 4(allyloxy)phenyl ] benzoate (MBPBPKA) were synthesized and characterized using/sup 1/H-NMR and elemental analysis methods. The thermal transition temperatures, mesomorphic properties, and mesophase textures of these compounds have been determined by differential scanning calorimetry (DSC), by polarizing optical microscopy, and by X-ray diffraction analysis. The effect of changes in chemical structure on the mesophase properties, mesophase and isotropic transition temperatures, and mesophase textures are discussed.
- 英文摘要: --
- 中文關鍵字: Thermotropic Property; Liquid Crystal; Ethylene Oxide; Smectic Phase; Nematic Phase; Cholesteric Phase
- 英文關鍵字: 熱向型性質;液晶;環氧乙烯;脂相;絲相;扭層相