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| Synthesis, crystal structure, and luminescence properties of three-dimensional rare earth molybdate framework based on [LnMo12] icosahedron |
| Author Name | Affiliation | E-mail | | HUANG Min | College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350002, China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | | | ZHUO Zhu | College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350002, China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China | | | CHEN Ting | College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350002, China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | | | LU Zi-Xiu | CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China | zxlu@mail.ustc.edu.cn | | WANG Wei | College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350002, China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | wangwei@fjirsm.ac.cn | | HUANG You-Gui | College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350002, China
CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, China | yghuang@fjirsm.ac.cn |
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| Abstract: Two new 3D rare-earth molybdate frameworks,[Ln(H2O)3]3[LnMo12O42]·xH2O, where Ln=Eu (1), Tb (2); x=7 (1), 10.17 (2), have been synthesized by slow evaporation. Both of these rare earth molybdate frameworks have a new rare-earth-centered icosahedron[LnMo12O42] building unit, which is further connected to adjacent ones by {LnO9} polyhedra to form a 3D network. Photoluminescence tests reveal that 1 and 2 exhibited different emission properties, which are caused by the f-orbital energy levels of Eu3+ and Tb3+. 1 exhibited bright red emissions (CIE chromaticity coordinates:(0.66, 0.33)) corresponding to the transition from 5D0 to 7FJ (J=4, 3, 2, 1, 0), with high luminescent emission intensity and high quantum yield (about 60%). 2 exhibited light green emissions (CIE chromaticity coordinates:(0.34, 0.60)) corresponding to the transition from 5D4 to 7FJ (J=6, 5, 4, 3), with lower luminescent emission intensity and quantum yield (about 20%). Interestingly, the introduction of Tb and the presence of a large number of solvent molecules in compound 2, both lead to partial fluorescence quenching but have little effect on the fluorescence properties of 1. |
| Keywords: rare-earth molybdate photoluminescence crystal structure fluorescence quenching phosphor |
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| HUANG Min,ZHUO Zhu,CHEN Ting,LU Zi-Xiu,WANG Wei,HUANG You-Gui.Synthesis, crystal structure, and luminescence properties of three-dimensional rare earth molybdate framework based on [LnMo12] icosahedron[J].Chinese Journal of Inorganic Chemistry,2023,39(11):2209-2218. |
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