K7[P2Mo4W13M(H2O)O61]及其有机复合材料的合成及光谱研究

用降解法制得了Dawson结构铬、铁取代的磷钼钨酸钾,并将其与溴化(E)-N-丁基-4-(2-(4-二甲氨基苯基)乙烯基)吡啶反应制备了有机复合材料.通过元素分析和TG-DTA确定了配合物的组成分别为K7[P2Mo4W13M(H2O)O61](M=Cr(1),Fe(2))和(C19H25N2)6K3[P2Mo4W13MO62](M=Cr(3),Fe(4)).利用红外光谱、紫外-可见光谱、固体漫反射紫外-可见-近红外光谱、X射线光电子能谱以及荧光光谱对上述化合物进行了表征,并研究了复合材料中无机与有机组分间的相互作用及其荧光性质.

Synthesis and Spectroscopy of K7 [P2Mo4W13M(H2O)O61] (M= Cr, Fe) and Their Organic Composite Materials

The Dawson heteropoly complexes K_7[P_2Mo_4W_(13)M(H_2O)O_(61)](M=Cr(1),Fe(2)) and their organic composite(materials) formed by(E)-Nbutyl-4-(2-(4'-dimethylaminophenyl)ethenyl)pyridinium cation and compound 1(or 2) with the stoichiometry of(C_(19)H_(25)N_2)_6K_3[P_2Mo_4W_(13)MO_(62)](M=Cr(3),Fe(4)) were synthesized and characterized by elemental analyses,thermogravimetric and differential thermal analyses,and IR,UV-Vis,solid diffuse reflectance UV-Vis-near IR,X-ray photoelectron and fluorescence spectroscopy.The results of spectra show that compounds 1 and 2 have Dawson structure,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 heteropoly anions in 3 and 4 complexes.The interaction between the hemicyanine cations and the heteropoly anions in the solid powder is stronger than that in the fluid solution.The compounds reported in this paper are(interesting) as nonlinear optical materials.