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

doi:10.3724/SP.J.1095.2013.30093

摘要/Abstract

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。 CCDC：780721

关键词: 铀, 晶体结构, 电化学, 荧光, 光催化剂

Abstract: 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.

Key words: uranium, crystal structure, electrochemistry, fluorescent property, photocatalyst

中图分类号:

O614.1

王娟, 祁晓婷, 李子颖, 何福兰, 朱文华, 郭建. 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[J]. 应用化学, DOI: 10.3724/SP.J.1095.2013.30093.

WANG Juan2*, QI Xiaoting2, LI Ziying1*, HE Fulan2, ZHU Wenhua2, GUO Jian1. Synthesis, Structure, Electrochemical, Fluorescent Property and Photocatalytic Activity of Uranium(Ⅵ) Hybrid Supramolecules[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.30093.

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