八角香兰挥发油的提取与化学成分的测定

以八角香兰为原料,采用水蒸气蒸馏的方法提取八角香兰挥发油.通过正交试验分析,确定了最佳的提取工艺条件为:浸泡时间20h,固液比1:10,粉碎粒径<1 190μm.在此条件下测得八角香兰挥发油含量为9.12%.用气相色谱-质谱联用法,鉴定出22种化学成分.其中黄樟醚含量最高,占挥发油总量的92.81%,为挥发油的主要成分.     

新型超分子复合发光材料——联吡啶氮氧化物铕配合物-蒙脱土的室温固相插层组装及发光性能

Eu(Ⅲ) complexes with bipyO₂ ligand were intercalated into the interlayer spacing of montmorillonite (MMT) by solid-solid ion exchanging and coordination reaction of bipyO₂ with the Eu³⁺ ion existing in the interlayer spacing of Eu-MMT at room temperature, respectively. The obtained luminescent supramolecular composite materials, [Eu(bipyO₂)₄Cl₂]⁺-MMT and [Eu(bipyO₂)₄]³⁺-MMT were characterized by elemental analysis, XRD and FTIR spectroscopy. At the same time, the luminescent properties of the materials were also studied. The results show that the intercalation assembly materials have regular layered structures and good luminescent properties. They emit characteristic red emissions of Eu³⁺ strongly under ultraviolet light excitation. The relative luminescence intensities of the unit mass of Eu³⁺ of intercalation assemblies are much better than that of the corresponding pure Eu³⁺ complex possibly due to the rigid layered structures of the materials and the supramolecular interaction between the host layers and the guest complex ions.     

钩藤红棕色素研究

钩藤(Ramulus Uncariae Cun Untis)为茜草科植物钩藤(Uncarin Rhynchophylla)及同属多种植物的带钩茎枝,广泛分布于我国的东南、西南、中南地区,生长力强,种植简易,是一种常用中药。除了生物碱(低极性),钩藤中还有大量水溶性红棕色物质没有加以利用,而且采作药物的只是带钩的细茎枝,大量粗藤也没有开发利用。本文对钩藤红棕色素的提取工艺条件和性质、成分进行研究。