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三种含镧系元素的聚铌酸盐及其发光性质。

Three Types of Lanthanide-Containing Polyoxoniobates and Their Luminescence Properties.

作者信息

Yang Zongfei, Yan Bing, Li Xue, Wu Jiakang, Ma Pengtao, Niu Jingyang, Wang Jingping

机构信息

Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, People's Republic of China.

School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, Jiangsu, People's Republic of China.

出版信息

Inorg Chem. 2022 Aug 8;61(31):12181-12189. doi: 10.1021/acs.inorgchem.2c01203. Epub 2022 Jul 29.

DOI:10.1021/acs.inorgchem.2c01203
PMID:35904345
Abstract

Fourteen lanthanide (Ln)-containing hetero selenato-phosphato-peroxopolyoxoniobates in three series: (1) Cs{[Ln(HO)][HPSeNb(O)O]}·HO [Ln = Ce (), Pr (), Sm (), Eu (), Gd (); , , , = 12; = 16]; (2) CsK{[Ln(HO)][HPSeNb(O)O]}·HO [Ln = Dy (), Tm (), Yb (), Lu (); = 14; = 24; , = 13]; (3) CsKH{[Ln(HO)][PSeNb(O)O]}{[Ln(HO)][PSeNb(O)O]}·HO [Ln = Ho (), Er (), Tm (), Yb (), Lu (), = 5, = 1; = 5; = 6.5; = 0.75; = 4; = 19, = 34; = 31], have been isolated by a one-pot reaction and structurally characterized by various physical and chemical analyses. These compounds represent the first group of Ln-functionalized polyoxoniobates with mixed heteroatoms. In addition, the photoluminescence properties of compounds , , and were measured, and the time-resolved emission spectra showed that the {PSeNb} segment contributed to the energy transfer from the polyoxoniobate units to the Ln center, which effectively promoted the emission of the Ln center.

摘要

通过一锅法反应分离出了三个系列的十四种含镧系元素（Ln）的杂硒代磷酸过氧聚铌酸盐：（1）Cs{[Ln(HO)][HPSeNb(O)O]}·HO [Ln = Ce (), Pr (), Sm (), Eu (), Gd ();, ,, = 12; = 16]; （2）CsK{[Ln(HO)][HPSeNb(O)O]}·HO [Ln = Dy (), Tm (), Yb (), Lu (); = 14; = 24;, = 13]; （3）CsKH{[Ln(HO)][PSeNb(O)O]}{[Ln(HO)][PSeNb(O)O]}·HO [Ln = Ho (), Er (), Tm (), Yb (), Lu (), = 5, = 1; = 5; = 6.5; = 0.75; = 4; = 19, = 34; = 31]，并通过各种物理和化学分析对其结构进行了表征。这些化合物代表了第一组具有混合杂原子的Ln功能化聚铌酸盐。此外，测量了化合物、和的光致发光性质，时间分辨发射光谱表明{PSeNb}片段有助于从聚铌酸盐单元到Ln中心的能量转移，这有效地促进了Ln中心的发射。

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