稀土硅钨杂多配合物与半菁复合材料的合成及光学性质

通过Keggin结构稀土硅钨杂多配合物K₁₃[Ln(SiW₁₁O₃₉)₂] (其中Ln=La，Ce，Pr，Nd，Sm，简写为Ln(SiW₁₁)₂)与碘化(E)-N-甲基-4-(2-(4-二甲氨基苯基)乙烯基)吡啶(C₁₆H₁₉N₂I，AI)反应，制备了一系列含轻稀土元素的硅钨杂多配合物与半菁衍生物的复合材料。应用元素分析和TG-DTA确定配合物的组成为(C₁₆H₁₉N₂)₁₀K₃[Ln(SiW₁₁O₃₉)₂]。利用红外光谱、紫外-可见光谱和荧光光谱研究了上述复合材料的光学性质及复合材料中无机组分与有机组分间的相互作用。

Synthesis and Spectroscopy of Composite Materials Made from Lanthanide-Substituted Polyoxotungstate and Hemicyanine Derivative

The organic composite materials formed by Keggin lanthanide-substituted polyoxotungstate anion [Ln(SiW11 O39)2 ]13- (in which Ln = La, Ce, Pr, Nd, Sm) and (E)-N-methyl-4-(2-(4'-dimethylaminophenyl)ethenyl)pyridinium cation with the stoichiometry of (C16 H19 N2 )10 K3 [Ln(SiW11 O39)2], have been synthesized and characterized by elemental analyses, thermogravimetric and differential thermal analyses, and IR, UV-Vis, and fluorescence spectroscopy. The results of spectra show that the title compounds have Keggin structure, and inorganic-organic composite materials are formed between the hemicyanine cations and the heteropoly anions, and the charge transfer occurs from the hemicyanine cations to the the heteropoly anions in title complexes. The compounds reported in this paper are interesting as optical materils.