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一种新型钼钒多酸化合物的合成、结构与荧光性能
Synthesis,Structure Characterization and Photoluminescence Property of a New Molybdenum-Vanadium Polyoxometalate
【摘要】 采用水热技术,合成了一种新型四帽Keggin结构多酸化合物[H3Mo8ⅥV8ⅣO40(AsO4)](en)2(4,4-bipy)7·9H2O(en:乙二胺;bipy:联吡啶)(1),并对化合物进行了元素分析、红外光谱、X射线光电子能谱和X射线单晶结构分析。晶体结构分析表明,化合物属三斜晶系,P1空间群,晶胞参数a=1.47395(5)nm,b=1.48172(6)nm,c=1.62881(7)nm,α=66.16(3)°,β=87.15(2)°,γ=63.42(1)°,V=2.8723(2)nm3,Z=1,R1=0.0728,w R2=0.2014。化合物由四帽Keggin多酸阴离子、4,4’-联吡啶、乙二胺和结晶水分子构成,化合物分子间存在大量的氢键,使化合物1形成3-D超分子结构。荧光测试表明,化合物1能发出较强的荧光,有可能成为潜在的光活性材料。
【Abstract】 A new tetra-capped Keggin molybdenum-vanadium polyoxometalate [H3Mo8ⅥV8ⅣO40(AsO4)](en)2(4,4-bipy)7·9 H2O( en: ethylenediamine,bipy: bipyridine)(1) was prepared under hydrothermal conditions,and characterized by elemental analysis,FT-IR,X-ray photoelectron spectroscopy( XPS) and single crystal X-ray diffraction analysis. The title compound crystallized in a triclinic system,P1 space group,a = 1. 47395( 5) nm, b = 1. 48172( 6) nm, c = 1. 62881( 7) nm, α = 66. 16( 3) °, β = 87. 15( 2) °,γ = 63. 42( 1) °,V = 2. 8723( 2) nm3,Z = 1,R1= 0. 0728,w R2= 0. 2014. Compound 1 is composed of a tetra-capped Keggin polyoxoanion,4,4’-bipyridine,ethylenediamines and lattice water molecules. The rich hydrogen bonds among polyoxoanion and water molecules make the compound molecules forming three dimensional supramolecular array. The compound 1 exhibits strong fluorescent emission and may be an excellent candidate for potential photoactive materials.
【Key words】 polyoxometalate; supramolecular; hydrothermal synthesis; fluorescent properties;
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,2018年05期
- 【分类号】O641.4
- 【被引频次】1
- 【下载频次】222