铀酰杂化超分子化合物的合成、结构、电化学、荧光及光催化性质(英文)  

Synthesis,Structure,Electrochemical,Fluorescent Property and Photocatalytic Activity of Uranium(Ⅵ) Hybrid Supramolecules

作　　者：王娟[1] 祁晓婷[1] 李子颖[2] 何福兰[1] 朱文华[1] 郭建[2] 

机构地区：[1]湖北大学化学化工学院,武汉430062 [2]核工业部北京地质研究院,北京100029

出　　处：《应用化学》2014年第2期193-199,共7页Chinese Journal of Applied Chemistry

基　　金：Supported by the National Natural Science Foundation of China(21201061);Natural Science Foundation of Hubei Province(2012FFB00205);Defenced-related Science and Technology Applied Basic Research(A0120060595-06)~~

摘　　要：合成了2,9-二甲基-1,10-邻菲罗啉的铀(Ⅵ)超分子杂化配合物[UO2Cl4]2[dmphenH2]2·3H2O(1),并进行了IR、UV、XPS和X单晶衍射分析。铀的杂化配合物呈六配位的变形八面体结构,属单斜晶系,Cc空间群;晶胞参数分别为:a=1.7043(2)nm,b=0.8809(13)nm,c=2.7492(10)nm,α=90°,β=94.493(2)°,γ=90°,Z=4,V=4.1149(8)nm3。氢键和π…π相互作用大大加强了配合物的稳定性。配位导致紫外光谱的最大吸收峰发生红移。荧光光谱显示,配合物在407 nm的光激发下可发射506.6 nm绿色荧光。电化学研究表明,该配合物具有一对可逆的氧化还原峰和一个不可逆的还原峰。该配合物在紫外光照射下显示出极高的光催化活性。A uranium（Ⅵ） hybrid supramolecules containing 2,9-dimethyl-1,10-phenanthroline, namely [UO2Cl4]2[dmphenH2]2·3H2O（1）, has been synthesized and characterized by IR, UV, XPS and X-ray single-crystal diffraction methods and so on. The crystal of uranium hybrid material belongs to monoclinic system, space group Cc with：a=1.7043（2） nm, b=0.8809（13） nm, c=2.7492（10） nm, α=90°, β=94.493（2）°, γ=90°, Z=4, V=4.1149（8） nm3, with a hexacoordinated distorted octahedral geometry. Because of the extensive hydrogen bonding interactions and π…π interactions, the structural stability of the compound has been greatly increased. The UV-Vis and fluorescence spectra at room temperature reveal that the maximal emission of the compound is red shifted as a result of coordination with the metal ion. The compound emits green luminescence at 506.6 nm（λex=407 nm）. Cycling voltammetric study reveals that the compound exhibits an irreversible reduction peak and a pair of reversible redox peaks. The crystal shows high photocatalytic activity under UV light. CCDC：780721.

关 键 词：铀 晶体结构 电化学 荧光 光催化剂 

分 类 号：O614.1[理学—无机化学]