论文部分内容阅读
合成了一系列未见文献报道的μ-氧-双[meso-四(对烷氧基苯基)卟啉合铝(Ⅲ)]配合物.用UV-vis,1H NMR,IR,MS和元素分析对各个化合物的结构进行了表征和确认,发现在该系列配合物中两个卟啉分子通过Al—O—Al键形成二聚体.用差示扫描量热仪(DSC)和偏光显微镜(PM)研究了其液晶性,发现其中九个配合物具有液晶性,多为升温单变液晶,有一至两个中介相,有确定的相转变温度、热焓和相变区间.考察了取代基、金属离子和配合物的空间结构对液晶性能的影响.
A series of u-oxo-bis [meso-tetrakis (p-alkoxyphenyl) porphyrinato aluminum (III)] complexes have been synthesized.Using UV-vis, 1H NMR, The structures of each compound were characterized and confirmed, and it was found that two porphyrin molecules formed dimers through Al-O-Al bonds in this series of complexes.Using differential scanning calorimetry (DSC) and polarized light microscopy PM), the liquid crystal properties of nine complexes were investigated, and nine complexes were found to be liquid crystalline, mostly single phase liquid crystals with one to two mesophases with definite phase transition temperature, enthalpy and phase transition. , The spatial structure of metal ions and complexes on the liquid crystal properties.