以十四酸根阴离子柱撑Zn-Al水滑石Zn0.77Al0.22(OH)2.0.22C13H27COO.0.81 H2O(记为ZnAl-14A)为预撑前体,在水溶液中用离子交换法将以2∶17缺位杂多酸根离子(P2Mo16VO61)11-记为(P Mo V)为配体的稀土杂多配阴离子Ce(P2Mo16VO61)219-(记为Ce(PMoV)2)插层组装到水滑石层板间,合成了一种具有大的层间距(3.37 nm)的超分子插层材料Zn0.77Al0.23(OH)2.0.0105[Ce(P1.9Mo15.7V1.1O61)2].0.011C13H27COO.0.83H2O(记为ZnAl-Ce(PMoV)2)。用ICP,IR,XRD和DTA对产物的组成和结构进行了表征。结果表明,该产物中Ce(PMoV)2配阴离子沿其长轴垂直于层板的方向分布于水滑石层间;产物具有规整的层状结构和热稳定性;产物对乙酸与正丁醇的酯化反应,二甘醇的脱水-环化反应和H2O2氧化环己烷的反应有良好的催化性能,且易于回收重复使用。
The extraction technology and stability and main composition of the red-brown pigment from Ramulus Uncariae Cun Uncis were studied.The result showed that the optimal technology was water as extractant, the proportion of material and extractant 1∶20(g/ml),the extract time of 1h in 60℃ and two times.The main composition of red-brown pigment from Ramulus Uncariae Cun Uncis was determined to be hydroxyanthraquinoneglycoside and flavonoid by chromatography separation and color-test and spectrum analysis.
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)43+-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.
