稀土钐铕双核有机配合物结构和发光性能研究  

Structure and luminescence properties of samarium(Ⅲ)and europium(Ⅲ)binuclear organic complexes

作　　者：李运涛[1] 郝瑾 高春焕 易志辉 LI Yun-tao;HAO Jin;GAO Chun-huan;YI Zhi-hui(College of Chemistry and Chemical Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China;School of Materials Science and Engineering,Shaanxi University of Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021 [2]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《现代化工》2021年第7期133-137,143,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(21475081)。

摘　　要：以苯甲酸(BA)和邻菲罗啉(Phen)为第1和第2配体,合成了系列钐与铕双核稀土有机配合物Eu_(1-x)Sm_(x)(BA)3Phen(x=0.2,_(0.5),_(0.8))。对样品进行IR、UV/Vis、XRD、SEM、TG等分析,推测了新合成配合物的分子结构。结果表明,该系列稀土有机配合物可以有效吸收紫外光和可见光,吸收峰主要来自于有机配体BA和Phen;Sm^(3+)的掺入对于Eu^(3+)具有荧光增强作用,可以应用于转光剂的研究,当Sm^(3+)的摩尔分数为_(0.5)时,Eu_(0.5)Sm_(0.5)(BA)3Phen配合物呈现良好分散的片状,发光强度达到最大;配合物具有较好的热稳定性,在一定的紫外光照射下能够发出明亮的特定颜色的光。Benzoic acid(BA)and 1,10-phenanthroline hydrate(Phen)are used as the first and second ligand respectively to synthesize a series of samarium and europium binuclear organic complex Eu_(1-x)Sm_(x)(BA)3 Phen(x=0.2,_(0.5),_(0.8)).The samples are analyzed by infrared spectroscopy(IR),ultraviolet-visible spectroscopy(UV/Vis),X-ray diffraction(XRD),scanning(SEM),and thermogravimetric(TG),and possible molecular structure of the newly synthesized complex is speculated through analysis.UV-Vis spectroscopy(UV/Vis)results show that this series of rare earth organic complexes can effectively absorb ultraviolet light and visible light,and absorption peaks mainly come from organic ligands BA and Phen.The doping of Sm^(3+)has a fluorescence enhancement effect on Eu^(3+),which can be applied to the research of light conversion agent.As the mole fraction of Sm^(3+)is _(0.5),Eu_(0.5) Sm_(0.5)(BA)3 Phen complex presents a well-dispersed flake and reaches the maximum luminous intensity.The complex has good thermal stability and can emit bright light with a specific color under certain ultraviolet light irradiation.

关 键 词：Sm3+ Eu3+ 稀土配合物 发光 

分 类 号：TQ630[化学工程—精细化工]