1
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Silva RS, Rodrigues JE, Gainza J, Serrano-Sánchez F, Martínez L, Huttel Y, Martínez JL, Alonso JA. Magnetoelastic Coupling Evidence by Anisotropic Crossed Thermal Expansion in Magnetocaloric RSrCoFeO 6 (R = Sm, Eu) Double Perovskites. Inorg Chem 2024; 63:7007-7018. [PMID: 38557070 PMCID: PMC11022179 DOI: 10.1021/acs.inorgchem.4c00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
Double perovskite oxides, characterized by their tunable magnetic properties and robust interconnection between the lattice and magnetic degrees of freedom, present an enticing foundation for advanced magnetic refrigeration materials. Herein, we delve into the influence of rare-earth elements on RSrCoFeO6 (R = Sm, Eu) disordered double perovskites by examining their structural, electronic, magnetic, and magnetocaloric properties. Temperature-dependent synchrotron X-ray diffraction analysis confirmed the stability of the orthorhombic phase (Pnma) across a wide temperature range. X-ray photoemission spectroscopy revealed that both Sm and Eu are in the 3+ state, whereas multiple states for Co2+/3+ and Fe3+/4+ are identified. The magnetic investigation and magnetocaloric effect (MCE) analysis brought to light the presence of a long-range antiferromagnetic (AFM) order with a second-order phase transition (SOPT) in both samples. The maximum magnetic entropy change ΔSMmax was approximately 0.9 J/kg K for both samples at applied field 0-7 T, manifesting prominently above Neel temperatures TN ≈ 93 K (Sm) and 84 K (Eu). Nevertheless, different relative cooling powers (RCP) of 112.6 J/kg (Sm) and 95.5 J/kg (Eu) were observed. A detailed analysis of the temperature-dependent lattice parameters shed light on a distinct magnetocaloric effect across the magnetic transition temperature, unveiling an anisotropic thermal expansion [αV = 1.41 × 10-5 K-1 (Sm) and αV = 1.54 × 10-5 K-1 (Eu)] wherein the thermal expansion axial ratio αbSm/αbEu = 0.61 became lower with increasing temperature, which suggests that the Eu sample experiences a greater thermal expansion in the b-axis direction. At the atomic bonding level, the evidence for magnetoelastic coupling around the magnetic transition temperatures TN was found through the anomalies along the average Co/Fe-O bond distance, formal valence, octahedral distortion, as well as an anisotropic lattice expansion.
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Affiliation(s)
- Romualdo S. Silva
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
| | - João E. Rodrigues
- European
Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, 38000 Grenoble, France
- CELLS-ALBA
Synchrotron Light Source, Cerdanyola del Vallès, E-08290 Barcelona, Spain
| | - Javier Gainza
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
| | | | - Lidia Martínez
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
| | - Yves Huttel
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
| | - José Luis Martínez
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
| | - José Antonio Alonso
- Instituto
de Ciencia de Materiales de Madrid (ICMM), CSIC, E-28049 Madrid, Spain
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2
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Zhao L, Tan L, Wu Q, Fu C, Ren X, Ren J, Wang Z, Zhang J, Meng X. A two-stage exacerbated hypoxia nanoengineering strategy induced amplifying activation of tirapazamine for microwave hyperthermia-chemotherapy of breast cancer. J Colloid Interface Sci 2024; 659:178-190. [PMID: 38163404 DOI: 10.1016/j.jcis.2023.12.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/19/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Microwave hyperthermia (MH) is an emerging treatment for solid tumors, such as breast cancer, due to its advantages of minimally invasive and deep tissue penetration. However, MH induced tumor hypoxia is still an obstacle to breast tumor treatment failure. Therefore, an original nanoengineering strategy was proposed to exacerbate hypoxia in two stages, thereby amplifying the efficiency of activating tirapazamine (TPZ). And a novel microwave-sensitized nanomaterial (GdEuMOF@TPZ, GEMT) is designed. GdEuMOF (GEM) nanoparticles are certified excellent microwave (MW) sensitization performance, thus improving tumor selectivity to achieve MH. Meanwhile MW can aggravate the generation of thrombus and caused local circulatory disturbance of tumor, resulting in the Stage I exacerbated hypoxia environment passively. Due to tumor heterogeneity and uneven hypoxia, GEMT nanoparticles under microwave could actively deplete residual oxygen through the chemical reaction, exacerbating hypoxia level more evenly, thus forming the Stage II of exacerbated hypoxia environment. Consequently, a two-stage exacerbated hypoxia GEMT nanoparticles realize amplifying activation of TPZ, significantly enhance the efficacy of microwave hyperthermia and chemotherapy, and effectively inhibit breast cancer. This research provides insights into the development of progressive nanoengineering strategies for effective breast tumor therapy.
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Affiliation(s)
- Lirong Zhao
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Longfei Tan
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Qiong Wu
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Changhui Fu
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xiangling Ren
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jun Ren
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Zhen Wang
- Laboratory Medicine Center, Allergy center, Department of Transfusion medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang 310014, China
| | - Jingjie Zhang
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xianwei Meng
- Key Laboratory of Cryogenic Science and Technology, Technical Institute of Physics and Chemistry, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
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3
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Lian X, Chang R, Huang G, Peng Y, Wang K, Zhang J, Yao B, Niu H. Multicolor Fluorescent Inks Based on Lanthanide Hybrid Organogels for Anticounterfeiting and Logic Circuit Design. ACS APPLIED MATERIALS & INTERFACES 2024; 16:6133-6142. [PMID: 38272837 DOI: 10.1021/acsami.3c17793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
With the rapid development of information technology, the encrypted storage of information is becoming increasingly important for human life. The luminescent materials with a color-changed response under physical or chemical stimuli are crucial for information coding and anticounterfeiting. However, traditional fluorescent materials usually face problems such as a lack of tunable fluorescence, insufficient surface-adaptive adhesion, and strict synthesis conditions, hindering their practical applications. Herein, a series of luminescent lanthanide hybrid organogels (Ln-MOGs) were rapidly synthesized using a simple method at room temperature through the coordination between lanthanide ions and 2,6-pyridinedicarboxylic acid and 5-aminoisophthalic acid. And the multicolor fluorescent inks were also prepared based on the Ln-MOG and hyaluronic acid, with the advantages of being easy to write, color-adjustable, and water-responsive discoloration, which has been applied to paper-based anticounterfeiting technology. Inspired by the responsiveness of the fluorescent inks to water, we designed a logic system that can realize single-input logic operations (NOT and PASS1) and double-input logic operations (NAND, AND, OR, NOR, XOR). The encryption of a binary code can be actualized utilizing different luminescent response modes based on the logic circuit system. By adjusting the energy sensitization and luminescence mechanism of lanthanide ions in the gel structure, the information reading and writing ability of the fluorescent inks were verified, which has great potential in the field of multicolor pattern anticounterfeiting and information encryption.
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Affiliation(s)
- Xiao Lian
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Rui Chang
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Gang Huang
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Yanqiu Peng
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
| | - Kaixuan Wang
- School of Materials Science & Engineering, Anhui University, Hefei 230601, China
| | - Juzhou Zhang
- China National Center for Quality Supervision and Test of Agricultural-Avocation Processed Food, Anhui Provincial Institute for Food and Drug Test, Hefei 230051, China
| | - Bangben Yao
- Anhui Province Institute of Product Quality Supervision & Inspection, Hefei 230051, China
| | - Helin Niu
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, School of Chemistry & Chemical Engineering, Anhui University, Hefei 230601, China
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4
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Rajabi A, Grotjahn R, Rappoport D, Furche F. A DFT perspective on organometallic lanthanide chemistry. Dalton Trans 2024; 53:410-417. [PMID: 38013481 DOI: 10.1039/d3dt03221c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Computational studies of the coordination chemistry and bonding of lanthanides have grown in recent decades as the need for understanding the distinct physical, optical, and magnetic properties of these compounds increased. Density functional theory (DFT) methods offer a favorable balance of computational cost and accuracy in lanthanide chemistry and have helped to advance the discovery of novel oxidation states and electronic configurations. This Frontier article examines the scope and limitations of DFT in interpreting structural and spectroscopic data of low-valent lanthanide complexes, elucidating periodic trends, and predicting their properties and reactivity, presented through selected examples.
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Affiliation(s)
- Ahmadreza Rajabi
- Department of Chemistry, University of California Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA.
| | - Robin Grotjahn
- Department of Chemistry, University of California Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA.
| | - Dmitrij Rappoport
- Department of Chemistry, University of California Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA.
| | - Filipp Furche
- Department of Chemistry, University of California Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, USA.
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5
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Shekar Roy H, K M N, Rajput S, Sadhukhan S, Gowri V, Hassan Dar A, Monga M, Salaria N, Guha R, Chattopadhyay N, Jayamurugan G, Ghosh D. Efficient Nitric Oxide Scavenging by Urea-Functionalized Push-Pull Chromophore Modulates NO-Mediated Diseases. Chemistry 2023; 29:e202301748. [PMID: 37431238 DOI: 10.1002/chem.202301748] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/03/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
The excess nitric oxide (NO) produced in the body in response to bacterial/proinflammatory stimuli is responsible for several pathological conditions. The current approaches that target the production of excess NO, either through the inhibition of nitric oxide synthase enzyme or its downstream mediators have been clinically unsuccessful. With an aim to regulate the excess NO, urea-functionalized push-pull chromophores containing 1,1,4,4-tetracyanobuta-1,3-dienes (TCBD) or expanded TCBD (eTCBD) were developed as NO scavengers. The NMR mechanistic studies revealed that upon NO binding, these molecules are converted to uncommon stable NONOates. The unique emissive property of Urea-eTCBD enables its application in vitro, as a NO-sensor. Furthermore, the cytocompatible Urea-eTCBD, rapidly inactivated the NO released from LPS-activated cells. The therapeutic efficacy of the molecule in modulating NO-mediated pathological condition was confirmed using a carrageenan-induced inflammatory paw model and a corneal injury model. While the results confirm the advantages of scavenging the excess NO to address a multitude of NO-mediated diseases, the promising sensing and bioactivity of Urea-eTCBD can motivate further exploration of such molecules in allied areas of research.
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Affiliation(s)
- Himadri Shekar Roy
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Neethu K M
- Energy Environment Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Swati Rajput
- Division of Endocrinology and Centre for Research in ASTHI, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Sreyanko Sadhukhan
- Division of Endocrinology and Centre for Research in ASTHI, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Vijayendran Gowri
- Energy Environment Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Arif Hassan Dar
- Energy Environment Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Malika Monga
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Navita Salaria
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Rajdeep Guha
- Division of Laboratory Animal Facility, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology and Centre for Research in ASTHI, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Govindasamy Jayamurugan
- Energy Environment Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
| | - Deepa Ghosh
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali, 140306, Punjab, India
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6
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Liu Z, Yu X, Yang X, Peng Q, Zhu X, Xu X, Qiu J. Tailor Traps in Bi 3+-Doped NaGdGeO 4 Phosphors by Introducing Eu 3+ Ions to Switch Multimodal Phosphorescence Emission. Inorg Chem 2023; 62:13362-13369. [PMID: 37540209 DOI: 10.1021/acs.inorgchem.3c01683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Featured with a tunable excitation/emission wavelength and excellent physicochemical stability, inorganic fluorescent materials are widely used in the fields of anti-counterfeiting. Here, we design a multi-stimuli-responsive dynamic fluorescence and phosphorescence anti-counterfeiting material by introducing Eu3+ ions in NaGdGeO4: Bi3+ to tailor the trap structure. The photoluminescence (PL), long persistent luminescence (LPL), and photo-stimulated luminescence (PSL) colors of NaGdGeO4: Bi3+, Eu3+ can be switched by varying the excitation modes (ultraviolet, near infrared, and X-ray light). Especially, the LPL and PSL colors of NaGdGeO4: Bi3+, Eu3+ vary with increasing decay and stimulation times. In addition, X-ray excitation ensures the specificity of the luminescence of NaGdGeO4: Bi3+, Eu3+ compared with ultraviolet excitation. This rapidly-changing-color fluorescent material offers the possibility of sophisticated anti-counterfeiting applications in the future.
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Affiliation(s)
- Zhichao Liu
- Faculty of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan 650093, P.R. China
| | - Xue Yu
- School of Mechanical Engineering, Institute for Advanced Study, Institute for Advanced Materials Deformation and Damage from Multi-Scale, Chengdu University, Chengdu 610106, P.R. China
| | - Xiuxia Yang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China
| | - Qingpeng Peng
- Faculty of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan 650093, P.R. China
| | - Xiaodie Zhu
- Faculty of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan 650093, P.R. China
| | - Xuhui Xu
- Faculty of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan 650093, P.R. China
| | - Jianbei Qiu
- Faculty of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan 650093, P.R. China
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7
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Deng C, Liang J, Sun R, Wang Y, Fu PX, Wang BW, Gao S, Huang W. Accessing five oxidation states of uranium in a retained ligand framework. Nat Commun 2023; 14:4657. [PMID: 37537160 PMCID: PMC10400547 DOI: 10.1038/s41467-023-40403-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/24/2023] [Indexed: 08/05/2023] Open
Abstract
Understanding and exploiting the redox properties of uranium is of great importance because uranium has a wide range of possible oxidation states and holds great potential for small molecule activation and catalysis. However, it remains challenging to stabilise both low and high-valent uranium ions in a preserved ligand environment. Herein we report the synthesis and characterisation of a series of uranium(II-VI) complexes supported by a tripodal tris(amido)arene ligand. In addition, one- or two-electron redox transformations could be achieved with these compounds. Moreover, combined experimental and theoretical studies unveiled that the ambiphilic uranium-arene interactions are the key to balance the stabilisation of low and high-valent uranium, with the anchoring arene acting as a δ acceptor or a π donor. Our results reinforce the design strategy to incorporate metal-arene interactions in stabilising multiple oxidation states, and open up new avenues to explore the redox chemistry of uranium.
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Affiliation(s)
- Chong Deng
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Jiefeng Liang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Rong Sun
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- Beijing Key Laboratory for Magnetoelectric Materials and Devices, Beijing, 100871, P. R. China
| | - Yi Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Peng-Xiang Fu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- Beijing Key Laboratory for Magnetoelectric Materials and Devices, Beijing, 100871, P. R. China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
- Spin-X Institute, School of Chemistry and Chemical Engineering, State Key Laboratory of Luminescent Materials and Devices, Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, South China University of Technology, Guangzhou, 510641, P. R. China
| | - Wenliang Huang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
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8
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Hsueh FC, Rajeshkumar T, Maron L, Scopelliti R, Sienkiewicz A, Mazzanti M. Isolation and redox reactivity of cerium complexes in four redox states. Chem Sci 2023; 14:6011-6021. [PMID: 37293643 PMCID: PMC10246686 DOI: 10.1039/d3sc01478a] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/04/2023] [Indexed: 06/10/2023] Open
Abstract
The chemistry of lanthanides is limited to one electron transfer reactions due to the difficulty of accessing multiple oxidation states. Here we report that a redox-active ligand combining three siloxides with an arene ring in a tripodal ligand can stabilize cerium complexes in four different redox states and can promote multielectron redox reactivity in cerium complexes. Ce(iii) and Ce(iv) complexes [(LO3)Ce(THF)] (1) and [(LO3)CeCl] (2) (LO3 = 1,3,5-(2-OSi(OtBu)2C6H4)3C6H3) were synthesized and fully characterized. Remarkably the one-electron reduction and the unprecedented two-electron reduction of the tripodal Ce(iii) complex are easily achieved to yield reduced complexes [K(2.2.2-cryptand)][(LO3)Ce(THF)] (3) and [K2{(LO3)Ce(Et2O)3}] (5) that are formally "Ce(ii)" and "Ce(i)" analogues. Structural analysis, UV and EPR spectroscopy and computational studies indicate that in 3 the cerium oxidation state is in between +II and +III with a partially reduced arene. In 5 the arene is doubly reduced, but the removal of potassium results in a redistribution of electrons on the metal. The electrons in both 3 and 5 are stored onto δ-bonds allowing the reduced complexes to be described as masked "Ce(ii)" and "Ce(i)". Preliminary reactivity studies show that these complexes act as masked Ce(ii) and Ce(i) in redox reactions with oxidizing substrates such as Ag+, CO2, I2 and S8 effecting both one- and two-electron transfers that are not accessible in classical cerium chemistry.
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Affiliation(s)
- Fang-Che Hsueh
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Thayalan Rajeshkumar
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées 31077 Toulouse, Cedex 4 France
| | - Laurent Maron
- Laboratoire de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées 31077 Toulouse, Cedex 4 France
| | - Rosario Scopelliti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Andrzej Sienkiewicz
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
- ADSresonances Sàrl 1920 Martigny Switzerland
| | - Marinella Mazzanti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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9
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Liu X, Ma J, Lu C, Xu J, Xu X, Fang X, Wang X. Probing crystalline phase effect of rare earth metal oxides (REO) on Cu/REO (RE=Gd, Eu, Sm) catalysts for methanol steam reforming (MSR) to produce H2. J RARE EARTH 2023. [DOI: 10.1016/j.jre.2023.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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10
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Bokouende SS, Jenks TC, Ward CL, Allen MJ. Solid-state and solution-phase characterization of Sm II-aza[2.2.2]cryptate and its methylated analogue. Dalton Trans 2022; 51:10852-10855. [PMID: 35781473 PMCID: PMC9650674 DOI: 10.1039/d2dt01823c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new SmII-azacryptates are reported that differ in steric hindrance and Lewis basicity of donor atoms. The sterically hindered complex has a smaller coordination number and a more negative electrochemical potential than the complex with less steric hindrance.
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Affiliation(s)
| | - Tyler C Jenks
- Deparptment of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA.
| | - Cassandra L Ward
- Lumigen Instrument Center, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA
| | - Matthew J Allen
- Deparptment of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA.
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11
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Yu X, Jiang Y, Li X, Song Z, Zhang X, Liu H, Zhao B, Ye T, Duan L, Fan J. Preparation and investigation of Dy3+/Tm3+-doped NaGd(MoO4)2 with thermal stability and tunable white light emission for LED applications. CrystEngComm 2022. [DOI: 10.1039/d1ce01434j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Combining theoretical calculations and experiments, synthesized NaGd(MoO4)2: 0.06Dy3+zTm3+ phosphors are shown to have good stability. Under 364 nm excitation, the phosphors emit tunable white light and demonstrate good thermal stability.
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Affiliation(s)
- Xiaochen Yu
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Yinlin Jiang
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Xiaojie Li
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Zeyu Song
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Xu Zhang
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Haonan Liu
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Baoyan Zhao
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Ting Ye
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Li Duan
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
| | - Jibin Fan
- School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
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12
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Niu X, Wang M, Zhang M, Cao R, Liu Z, Hao F, Sheng L, Xu H. Smart intercalation and coordination strategy to construct stable ratiometric fluorescence nanoprobes for the detection of anthrax biomarker. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00957a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
L@Mg-Al-Ln-LDHs (Ln = Tb, Eu) constructed by the intercalation coordination strategy exhibited a strong and stable fluorescence reference signal and achieved reliable ratiometric detection of DPA in complex environments and actual spores.
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Affiliation(s)
- Xiaoxiao Niu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Meixiang Wang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Mengyu Zhang
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Rui Cao
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Zhaodi Liu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Fuying Hao
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Liangquan Sheng
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Huajie Xu
- School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
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