Synthesis and Characterization of Liquid Crystalline Dendrimers Containing Triazine unit

[[abstract]]本論文以二辛胺以及正辛醇為末端官能基，使用??與2-甲基??，中心核部分則接上 PBNH 來合成兩個系列的半樹枝狀分子， C8GnPBN(n=2，3) 和 C8GnPBN(2-M) (n=2，3)，另外以二辛胺為末端官能基，使用不同的中心核如乙二胺、丙二胺、丁二胺、 N,N’ -二甲基乙二胺 、 N,N’ -二甲基-1,3-丙二胺及N,N’ -二甲基-1,4-丁二胺來合成樹枝狀分子，並以偏光顯微鏡、熱微差掃描分析儀、X-射線粉末繞射來進行研究。[[abstract]]In this study, we utilized n-octyl alcohol and di-octylaimne as the peripheral groups, piperazine and 2-methyl piperazine as connecting unit, and PBNH as a core to synthesize two series of dendrons. In addition, we utilized dioctylaimne as the peripheral group, and different cores such as di-aminoethane, diaminopropane, diaminobutane, N,N’-dimethyl-1,2-ethanediamine, N,N’-dimethyl-1,3- propanediamine, and N,N’-dimethyl-1,4-butanediamine for preparing dendrimers for studying their liquid crystalline phases on thermal treatment. Dendrimers and dendrons were characterized by polarizing microscopy, differential scanning calorimetry and powder XRD.[[note]]碩