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Blanes-Díaz A, Shohel M, Rice NT, Piedmonte I, McDonald MA, Jorabchi K, Kozimor SA, Bertke JA, Nyman M, Knope KE. Synthesis and Characterization of Cerium-Oxo Clusters Capped by Acetylacetonate. Inorg Chem 2024; 63:9406-9417. [PMID: 37792316 PMCID: PMC11134509 DOI: 10.1021/acs.inorgchem.3c02141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Indexed: 10/05/2023]
Abstract
Cerium-oxo clusters have applications in fields ranging from catalysis to electronics and also hold the potential to inform on aspects of actinide chemistry. Toward this end, a cerium-acetylacetonate (acac1-) monomeric molecule, Ce(acac)4 (Ce-1), and two acac1--decorated cerium-oxo clusters, [Ce10O8(acac)14(CH3O)6(CH3OH)2]·10.5MeOH (Ce-10) and [Ce12O12(OH)4(acac)16(CH3COO)2]·6(CH3CN) (Ce-12), were prepared and structurally characterized. The Ce(acac)4 monomer contains CeIV. Crystallographic data and bond valence summation values for the Ce-10 and Ce-12 clusters are consistent with both clusters having a mixture of CeIII and CeIV cations. Ce L3-edge X-ray absorption spectroscopy, performed on Ce-10, showed contributions from both CeIII and CeIV. The Ce-10 cluster is built from a hexameric cluster, with six CeIV sites, that is capped by two dimeric CeIII units. By comparison, Ce-12, which formed upon dissolution of Ce-10 in acetonitrile, consists of a central decamer built from edge sharing CeIV hexameric units, and two monomeric CeIII sites that are bound on the outer corners of the inner Ce10 core. Electrospray ionization mass spectrometry data for solutions prepared by dissolving Ce-10 in acetonitrile showed that the major ions could be attributed to Ce10 clusters that differed primarily in the number of acac1-, OH1-, MeO1-, and O2- ligands. Small angle X-ray scattering measurements for Ce-10 dissolved in acetonitrile showed structural units slightly larger than either Ce10 or Ce12 in solution, likely due to aggregation. Taken together, these results suggest that the acetylacetonate supported clusters can support diverse solution-phase speciation in organic solutions that could lead to stabilization of higher order cerium containing clusters, such as cluster sizes that are greater than the Ce10 and Ce12 reported herein.
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Affiliation(s)
- Anamar Blanes-Díaz
- Department
of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Mohammad Shohel
- Department
of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Natalie T. Rice
- Los
Alamos National Laboratory (LANL), P.O. Box 1663, Los Alamos, New Mexico 87545, United States
| | - Ida Piedmonte
- Los
Alamos National Laboratory (LANL), P.O. Box 1663, Los Alamos, New Mexico 87545, United States
| | - Morgan A. McDonald
- Department
of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Kaveh Jorabchi
- Department
of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Stosh A. Kozimor
- Los
Alamos National Laboratory (LANL), P.O. Box 1663, Los Alamos, New Mexico 87545, United States
| | - Jeffery A. Bertke
- Department
of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - May Nyman
- Department
of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Karah E. Knope
- Department
of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
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Palys L, Stephen D, Mao Z, Mergelsberg ST, Boglaienko D, Chen Y, Liu L, Bae Y, Jin B, Sommers JA, De Yoreo JJ, Nyman M. Cerium Nanophases from Cerium Ammonium Nitrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4350-4360. [PMID: 38364791 DOI: 10.1021/acs.langmuir.3c03611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Ceria nanomaterials with facile CeIII/IV redox behavior are used in sensing, catalytic, and therapeutic applications, where inclusion of CeIII has been correlated with reactivity. Understanding assembly pathways of CeO2 nanoparticles (NC-CeO2) in water has been challenged by "blind" synthesis, including rapid assembly/precipitation promoted by heat or strong base. Here, we identify a layered phase denoted Ce-I with a proposed formula CeIV(OH)3(NO3)·xH2O (x ≈ 2.5), obtained by adding electrolytes to aqueous cerium ammonium nitrate (CAN) to force precipitation. Ce-I represents intermediate hydrolysis species between dissolved CAN and NC-CeO2, where CAN is a commonly used CeIV compound that exhibits unusual aqueous and organic solubility. Ce-I features Ce-(OH)2-Ce units, representing the first step of hydrolysis toward NC-CeO2 formation, challenging prior assertions about CeIV hydrolysis. Structure/composition of poorly crystalline Ce-I was corroborated by a pair distribution function, Ce-L3 XAS (X-ray absorption spectroscopy), compositional analysis, and 17O nuclear magnetic resonance spectroscopy. Formation of Ce-I and its transformation to NC-CeO2 is documented in solution by small-angle X-ray scattering (SAXS) and in the solid-state by transmission electron microscopy (TEM) and powder X-ray diffraction. Morphologies identified by TEM support form factor models for SAXS analysis, evidencing the incipient assembly of Ce-I. Finally, two morphologies of NC-CeO2 are identified. Sequentially, spherical NC-CeO2 particles coexist with Ce-I, and asymmetric NC-CeO2 with up to 35% CeIII forms at the expense of Ce-I, suggesting direct replacement.
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Affiliation(s)
- Lauren Palys
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Doctor Stephen
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Zhiwei Mao
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | | | - Daria Boglaienko
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Ying Chen
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Lili Liu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yuna Bae
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Biao Jin
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - James A Sommers
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - James J De Yoreo
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
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Lu Z, Wang S, Zhuo Z, Li GL, Zhu H, Wang W, Huang YG, Hong M. Achieving stable photoluminescence by double thiacalix[4]arene-capping: the lanthanide-oxo cluster core matters. RSC Adv 2022; 12:29151-29161. [PMID: 36320769 PMCID: PMC9554741 DOI: 10.1039/d2ra04942b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
Luminescence stability is a critical consideration for applying phosphors in practical devices. In this work, we report two categories of double p-tert-butylthiacalix[4]arene (H4TC4A) capped clusters that exhibit characteristic lanthanide luminescence. Specifically, {[Ln4(μ4-OH)(TC4A)2(DMF)6(CH3OH)3(HCOO)Cl2]}·xCH3OH (Ln = Eu (1), Tb (2); x = 0–1) with square-planar [Ln4(μ4-OH)] cluster cores and {[Ln9(μ5-OH)2(μ3-OH)8(OCH3) (TC4A)2 (H2O)24Cl9]}·xDMF (Ln = Gd (3), Tb (4), Dy (5); x = 2–6) with hourglass-like [Ln9(μ5-OH)2(μ3-OH)8] cluster cores are synthesized and characterized. By comparing 2 and 4, we find that several critical luminescence properties (such as quantum efficiency and luminescence stabilities) depend directly on the cluster core structure. With the square-planar [Ln4(μ4-OH)] cluster cores, 2 demonstrates high quantum yield (∼65%) and excellent luminescence stability against moisture, high temperature, and UV-radiation. A white light-emitting diode (LED) with ultrahigh color quality is successfully fabricated by mixing 2 with commercial phosphors. These results imply that high quality phosphors might be achieved by exploiting the double thiacalix[4]arene-capping strategy, with an emphasis on the cluster core structure. {Ln4} cores outperform {Ln9} cores in achieving stable photoluminescence from double thiacalix[4]arene-capped lanthanide-oxo clusters.![]()
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Affiliation(s)
- Zixiu Lu
- School of Rare Earth, University of Science and Technology of ChinaGanzhouChina,Ganjiang Innovation Academy, Chinese Academy of SciencesGanzhou 341000China
| | - Shujian Wang
- School of Rare Earth, University of Science and Technology of ChinaGanzhouChina,Ganjiang Innovation Academy, Chinese Academy of SciencesGanzhou 341000China
| | - Zhu Zhuo
- 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 SciencesChina,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China
| | - Guo-Ling Li
- 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 SciencesChina,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China
| | - Haomiao Zhu
- 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 SciencesChina,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China
| | - Wei Wang
- 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 SciencesChina,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China
| | - You-Gui Huang
- 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 SciencesChina,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhou350108China
| | - Maochun Hong
- School of Rare Earth, University of Science and Technology of ChinaGanzhouChina,Ganjiang Innovation Academy, Chinese Academy of SciencesGanzhou 341000China,Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Haixi Institutes, Chinese Academy of SciencesXiamenFujian 361021China
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