1
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Oliva MDLÁ, Chen C, de Miguel G, O'Hare D, Pavlovic I, Sánchez L, Pastor A. Europium insertion into MgAl hydrotalcite-like compound to promote the photocatalytic oxidation of nitrogen oxides. CHEMOSPHERE 2024; 361:142555. [PMID: 38851500 DOI: 10.1016/j.chemosphere.2024.142555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/30/2024] [Accepted: 06/05/2024] [Indexed: 06/10/2024]
Abstract
Easy synthesis of efficient, non-toxic photocatalysts is a target to expand their potential applications. In this research, the role of Eu3+ doping in the non-toxic, affordable, and easily prepared MgAl hydrotalcite-like compounds (HTlcs) was explored in order to prepare visible light semiconductors. Eu doped MgAl-HTlcs (MA-xEu) samples were prepared using a simple coprecipitation method (water, room temperature and atmospheric pressure) and europium was successfully incorporated into MgAl HTlc frameworks at various concentrations, with x (Eu3+/M3+ percentage) ranging from 2 to 15. Due to the higher ionic radius and lower polarizability of Eu3+ cation, its presence in the metal hydroxide layer induces slight structural distortions, which eventually affect the growth of the particles. The specific surface area also increases with the Eu content. Moreover, the presence of Eu3+ 4f energy levels in the electronic structure enables the absorption of visible light in the doped MA-xEu samples and contributes to efficient electron-hole separation. The microstructural and electronic changes induced by the insertion of Eu enable the preparation of visible light MgAl-based HTlcs photocatalysts for air purification purposes. Specifically, the optimal HTlc photocatalyst showed improved NOx removal efficiency, ∼ 51% (UV-Vis) and 39% (visible light irradiation, 420 nm), with excellent selectivity (> 96 %), stability (> 7 h), and enhanced release of •O2- radicals. Such results demonstrate a simple way to design photocatalytic HTlcs suitable for air purification technologies.
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Affiliation(s)
- María de Los Ángeles Oliva
- Departamento de Química Inorgánica, Instituto de Química para la Energía y Medioambiente, Universidad de Córdoba, Campus de Rabanales, E-14014, Córdoba, Spain
| | - Chunping Chen
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Gustavo de Miguel
- Departamento de Química Física y Termodinámica Aplicada, Instituto de Química para la Energía y Medioambiente, Universidad de Córdoba, Campus de Rabanales, E-14014, Córdoba, Spain
| | - Dermot O'Hare
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Ivana Pavlovic
- Departamento de Química Inorgánica, Instituto de Química para la Energía y Medioambiente, Universidad de Córdoba, Campus de Rabanales, E-14014, Córdoba, Spain
| | - Luis Sánchez
- Departamento de Química Inorgánica, Instituto de Química para la Energía y Medioambiente, Universidad de Córdoba, Campus de Rabanales, E-14014, Córdoba, Spain.
| | - Adrián Pastor
- Departamento de Química Inorgánica, Instituto de Química para la Energía y Medioambiente, Universidad de Córdoba, Campus de Rabanales, E-14014, Córdoba, Spain.
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2
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Tubau À, Zinna F, Di Bari L, Font-Bardía M, Vicente R. Dinuclear enantiopure Ln 3+ complexes with ( S-) and ( R-) 2-phenylbutyrate ligands. Luminescence, CPL and magnetic properties. Dalton Trans 2024. [PMID: 39078094 DOI: 10.1039/d4dt01295j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
The reaction of Ln(NO3)2·6H2O (Ln = Nd, Sm, Eu, Tb, Dy, Tm and Yb) with the respective enantiopure (R)-(-)-2-phenylbutyric or (S)-(+)-2-phenylbutyric acid (R/S-2-HPhBut) and 4,7-diphenyl-1,10-phenanthroline (Bphen) allows the isolation of chiral dinuclear compounds of the formula [Ln2(μ-R/S-2-PhBut)4(R/S-2PhBut)2(Bphen)2] where Ln = Nd3+ (R/S-Nd-a), Sm3+ (R/S-Sm-a), Eu3+ (R/S-Eu-a), Tb3+ (R/S-Tb-a and R/S-Tb-b), Dy3+ (R/S-Dy-a and R/S-Dy-b), Tm3+ (R/S-Tm-b) and Yb3+ (R/S-Yb-b). Single crystal X-ray diffraction was performed for compounds S-Eu-a and S-Tm-b. Powder crystal X-ray diffraction was performed for all complexes. From the crystallographic data two different structural motifs were found which are referred to as structure type a and structure type b. In structure type a, the Ln3+ atoms are bridged through four R or S-2-PhBut ligands with two different kinds of coordination modes whereas in structure type b the two Ln3+ atoms are bridged through four R or S-2-PhBut ligands showing only one kind of coordination mode. For those lanthanide ions exhibiting both structure types, Tb3+ and Dy3+, a difference in the luminescence and magnetism behavior is observed. All compounds (except R/S-Tm-b) exhibit sensitized luminescence, notably the Eu3+ and Tb3+ analogues. Circular Dichroism (CD) and Circular Polarized Luminescence (CPL) in the solid state and in 1 mM dichloromethane (DCM) solutions are reported, leading to improved chiroptical properties for the DCM solutions. The asymmetry factor (glum) in 1 mM DCM is ±0.02 (+ for R-Eu-a) for the magnetically allowed transition 5D0 → 7F1 and ±0.03 (+ for R-Tb-a and R-Tb-b) for the 5D4 → 7F5 transition. Magnetic properties of all compounds were studied and the Dy3+ compound with the structural motif b (R-Dy-b) shows Single Molecular Magnet (SMM) behavior under a 0 T magnetic field. However, R-Dy-a is a field-induced SMM.
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Affiliation(s)
- Ànnia Tubau
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, I 56124 Pisa, Italy.
| | - Mercè Font-Bardía
- Departament de Mineralogia, Cristal·lografia i Dipòsits Minerals and Unitat de Difracció de Raigs X, Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís 1-3, 08028 Barcelona, Spain
| | - Ramon Vicente
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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3
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Bustamante-Fernández J, Ruiz-Bilbao E, Rodríguez-Esteban C, Gonidec M, García JA, Lezama L, Gutiérrez-Zorrilla JM, Oyarzabal I, Artetxe B. Effect of the heteroatom on the magnetic and luminescence properties of hybrid lanthanide-substituted Keggin-type polyoxometalates. Dalton Trans 2024. [PMID: 39078235 DOI: 10.1039/d4dt01379d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2024]
Abstract
Replacement of the heteroatom from Si to Ge has a strong influence on the luminescence properties of a series of hybrid, sandwich-type K5[Ln(α-GeW11O39)(C20H22Br2N2O4)]·14H2O (1Ge-Ln, Ln = Sm to Lu) anions. Interestingly, the Gd and Yb derivatives retain their ability to display slow relaxation of magnetisation.
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Affiliation(s)
- Janire Bustamante-Fernández
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Edificio Martina Casiano, 3rd Floor, UPV/EHU Science Park, Barrio Sarriena s/n, 48940 Leioa, Spain.
| | - Estibaliz Ruiz-Bilbao
- BCMaterials, Edificio Martina Casiano, 3rd Floor, UPV/EHU Science Park, Barrio Sarriena s/n, 48940 Leioa, Spain.
| | - Corina Rodríguez-Esteban
- BCMaterials, Edificio Martina Casiano, 3rd Floor, UPV/EHU Science Park, Barrio Sarriena s/n, 48940 Leioa, Spain.
| | - Mathieu Gonidec
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - José A García
- Departamento de Física Aplicada II, Facultad de Ciencia y Tecnología. Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
| | - Luis Lezama
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
| | - Juan M Gutiérrez-Zorrilla
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Edificio Martina Casiano, 3rd Floor, UPV/EHU Science Park, Barrio Sarriena s/n, 48940 Leioa, Spain.
| | - Itziar Oyarzabal
- BCMaterials, Edificio Martina Casiano, 3rd Floor, UPV/EHU Science Park, Barrio Sarriena s/n, 48940 Leioa, Spain.
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Beñat Artetxe
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
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4
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Borrisov B, Tsvetkov M, Zahariev T, Elenkova D, Morgenstern B, Dimov D, Kukeva R, Trendafilova N, Georgieva I. Effect of Pyrrolidinedithiocarbamate Ligand on the Luminescence Properties of Heteroligand Samarium and Europium Complexes: Experimental and Theoretical Study. Inorg Chem 2024; 63:13840-13864. [PMID: 38996195 DOI: 10.1021/acs.inorgchem.4c00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
The photophysical properties of two isostructural heteroligand lanthanide complexes of general formula Ln(pdtc)3(phen) (pdtc = pyrrolidinedithiocarbamate anion, phen = 1,10-phenanthroline), Ln = Sm3+ (1), Eu3+ (2)) were studied in solid state and dichloromethane (DCM) solution. The two lanthanide complexes were investigated by experimental techniques for structural (single-crystal X-ray diffraction analysis of 1, powder XRD, TG-DTA) and spectroscopic [electron paramagnetic resonance (EPR), infrared (IR), ultraviolet-visible (UV-vis), photoluminescence (PL)] characterization. DFT/TDDFT/ωB97xD and multireference SA-CASSCF/NEVPT2 calculations with perturbative spin-orbit coupling corrections were applied to construct the Jablonski energy diagrams and to discuss the excited state energy transfer mechanism with competing excited state processes and possible sensitized mechanism of metal-centered emission. The first excited state (S1) involved in the excited state energy transfer L(antenna)-to-Ln was predicted to have interligand (pdtc-to-phen) charge transfer character in contrast to the previously predicted ligand-to-metal charge transfer character. The theoretical consideration showed similar relaxation paths and luminescence quenching channels and appropriate Donor*(phen)-Acceptor*(Ln3+) energy gap for 1 and 2. The experimental measurements in the solid state, however, showed efficient luminescence and good ability to convert UV to visible light only for the Sm(pdtc)3(phen) complex. The minor emission of 2 was explained by partial reduction of Eu3+, confirmed by EPR and calculated electron density distribution data.
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Affiliation(s)
- Boris Borrisov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
| | - Martin Tsvetkov
- Faculty of Chemistry and Pharmacy, Sofia University St. Kliment Ohridski, 1 James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Tsvetan Zahariev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
| | - Denitsa Elenkova
- Faculty of Chemistry and Pharmacy, Sofia University St. Kliment Ohridski, 1 James Bourchier blvd., 1164 Sofia, Bulgaria
| | - Bernd Morgenstern
- Inorganic Solid State Chemistry, Saarland University, Campus Geb. C4 1, 66123 Saarbrücken, Germany
| | - Deyan Dimov
- Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, 109, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
| | - Rositsa Kukeva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
| | - Natasha Trendafilova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
| | - Ivelina Georgieva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 11, Acad. G. Bonchev str., 1113 Sofia, Bulgaria
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5
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Walker L, Heath SL, Jiang J, Natrajan LS, Livens FR. Oligomer Formation Effects on the Separation of Trivalent Lanthanide Fission Products. Inorg Chem 2024; 63:13380-13391. [PMID: 38986132 PMCID: PMC11270979 DOI: 10.1021/acs.inorgchem.4c01272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 07/12/2024]
Abstract
The assessment of trivalent lanthanide yields from the fission of uranium-235 is currently achieved using LN (LaNthanide) resin, di(2-ethylhexyl)orthophosphoric acid immobilized on a solid support. However, coelution of lighter lanthanides into terbium (Tb3+) fractions remains a significant problem in recovery of analytically pure fractions. In order to understand how the separation of trivalent lanthanides and yttrium (Ln3+) with LN resin proceeds and how to improve it, their speciation with the organic extractant HDEHP must be fully understood under aqueous conditions. A comprehensive luminescence analysis of aqueous solutions of Ln3+ in contact with HDEHP, along with infrared spectroscopy, elemental combustion analysis, inductively coupled plasma atomic emission spectroscopy (ICP-AES), and mass spectrometry, was used to indicate that an intermediate species is responsible for the coelution; where similar Ln3+ centers (e.g., Eu3+ and Tb3+) are bridged by the O-P-O moiety of deprotonated HDEHP to form large heteronuclear oligomeric structures with the general formula [Ln2(DEHP)6]n. Energy transfer from Tb3+ to Eu3+ in this structure confirms that lanthanide centers are within 10 Å and was used to propose that the oligomeric [Ln2(DEHP)6]n structure is formed rather than a dimeric Ln2(DEHP)6 structure. The effect of this speciation on LN resin column elution is investigated using luminescence spectroscopy, confirming that the oligomeric [Ln2(DEHP)6]n species could disrupt regular elution behavior and cause the problematic bleeding of lighter lanthanides (Sm3+ and Eu3+) into Tb3+ fractions. Resin luminescence measurements were used to propose that the bleeding of the organic extractant HDEHP from its solid support causes the formation of the disruptive oligometallic species.
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Affiliation(s)
- Lauren
E. Walker
- Department
of Chemistry, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, U.K.
| | - Scott L. Heath
- Department
of Earth and Environmental Sciences, The
University of Manchester, Manchester M13 9PL, U.K.
| | | | - Louise S. Natrajan
- Department
of Chemistry, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, U.K.
| | - Francis R. Livens
- Department
of Chemistry, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, U.K.
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6
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Seno C, Reichholf N, Salutari F, Spadaro MC, Ivanov YP, Divitini G, Gogos A, Herrmann IK, Arbiol J, Smet PF, De Roo J. Epitaxial Core/Shell Nanocrystals of (Europium-Doped) Zirconia and Hafnia. J Am Chem Soc 2024. [PMID: 39038812 DOI: 10.1021/jacs.4c05037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
A careful design of the nanocrystal architecture can strongly enhance the nanocrystal function. So far, this strategy has faced a synthetic bottleneck in the case of refractory oxides. Here we demonstrate the epitaxial growth of hafnia shells onto zirconia cores and pure zirconia shells onto europium-doped zirconia cores. The core/shell structures are fully crystalline. Upon shelling, the optical properties of the europium dopant are dramatically improved (featuring a more uniform coordination and a longer photoluminescence lifetime), indicating the suppression of nonradiative pathways. These results launch the stable zirconium and hafnium oxide hosts as alternatives for the established NaYF4 systems.
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Affiliation(s)
- Carlotta Seno
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Nico Reichholf
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Francesco Salutari
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, 08193 Barcelona, Catalonia, Spain
| | - Maria Chiara Spadaro
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, 08193 Barcelona, Catalonia, Spain
- Department of Physics and Astronomy "Ettore Majorana", University of Catania and CNR-IMM, Via S. Sofia 64, 95123 Catania, Italy
| | - Yurii P Ivanov
- Electron Spectroscopy and Nanoscopy, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Giorgio Divitini
- Electron Spectroscopy and Nanoscopy, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Alexander Gogos
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - Inge K Herrmann
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, 08193 Barcelona, Catalonia, Spain
- ICREA, 08010 Barcelona, Catalonia, Spain
| | - Philippe F Smet
- LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, 9000 Ghent, Belgium
| | - Jonathan De Roo
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
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7
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Nielsen VRM, Le Guennic B, Sørensen TJ. Evaluation of Point Group Symmetry in Lanthanide(III) Complexes: A New Implementation of a Continuous Symmetry Operation Measure with Autonomous Assignment of the Principal Axis. J Phys Chem A 2024; 128:5740-5751. [PMID: 38935479 DOI: 10.1021/acs.jpca.4c00801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
The structure of molecular systems dictates the physical properties, and symmetry is the determining factor for all electronic properties. This makes group theory a powerful tool in quantum mechanics to compute molecular properties. For inorganic compounds, the coordination geometry has been estimated as idealized polyhedra with high symmetry, which, through ligand field theory, provides predictive capabilities. However, real samples rarely have ideal symmetry, and although continuous shape measures (CShM) can be used to evaluate deviation from an ideal reference structure σideal, this often fails for lanthanide(III) complexes with high coordination numbers, no obvious choice of principal axes, and no obvious reference structure. In lanthanide complexes, the unique electronic structures and associated properties are intricately tied to the symmetry around the lanthanide center. Therefore, robust methodologies to evaluate and estimate point group symmetry are instrumental for building structure-property relationships. Here, we have demonstrated an algorithmic approach that orients a molecular structure Q in the best possible way to the symmetry axis of any given point group G and computes a deviation from the ideal symmetry σsym(G,Q). This approach does not compute the deviation from an ideal reference system, but the intrinsic deviation in the structure induced by symmetry operations. If the structure contains the symmetry operation, there is no deviation and σsym(G,Q) = 0. The σsym deviation is generated from all of the symmetry operation ÔS in a point group G using the most correct orientation of the sample structure in each group G. The best orientation is found by an algorithm that minimizes the orientation of the structure with respect to G. To demonstrate the methodology, we have investigated the structure and symmetry of 8- and 9-coordinated lanthanide(III) aqua complexes and correlated the luminescence from 3 europium(III) crystals to their actual symmetry. To document the methodology, the approach has been tested on 26 molecules with different symmetries. It was concluded that the method is robust and fully autonomous.
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Affiliation(s)
- Villads R M Nielsen
- Department of Chemistry and NanoScience Centre, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Boris Le Guennic
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226 35000 Rennes, France
| | - Thomas Just Sørensen
- Department of Chemistry and NanoScience Centre, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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8
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Kataoka T, Liu Z, Yamada I, Galindo TGP, Tagaya M. Surface functionalization of hydroxyapatite nanoparticles for biomedical applications. J Mater Chem B 2024; 12:6805-6826. [PMID: 38919049 DOI: 10.1039/d4tb00551a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
This review completely covers the various aspects of hydroxyapatite (HAp) nanoparticles and their role in different biological situations, and provides the surface and interface contents on (i) hydroxyapatite nanoparticles and their hybridization with organic molecules, (ii) surface designing of hydroxyapatite nanoparticles to provide their biocompatibility and photofunction, and (iii) coating technology of hydroxyapatite nanoparticles. In particular, we summarized how the HAp nanoparticles interact with the different ions and molecules and highlighted the potential for hybridization between HAp nanoparticles and organic molecules, which is driven by the interactions of the HAp nanoparticle surface ions with several functional groups of biological molecules. In addition, we highlighted the studies focusing on the interfacial interactions between the HAp nanoparticles and proteins for exploring the enhanced biocompatibility. Such studies focus on how these interactions affect the hydration layers and protein adsorption. However, the hydration layer state involves diverse molecular interactions that can alter the shape of the adsorbed proteins, thereby affecting cell adhesion and spreading on the surfaces. We also summarized the relationship between the surface properties of the HAp nanoparticles and the hydration layer. Furthermore, we spotlighted the cytocompatible photoluminescent probes that can be developed by designing HAp/organic nanohybrid structures. We then emphasized the importance of photofunctionalization in theranostics, which involves the integration of diagnostics and therapy based on the surface design of the HAp nanoparticles. Furthermore, the coating techniques using HAp nanoparticles and HAp nanoparticle/polymer composites were outlined for fusing base biomaterials with biological tissues. The advantages of HAp/biocompatible polymer composite coatings include the ability to effectively cover porous or irregularly shaped surfaces while controlling the thickness of the coating layer, and the addition of HAp nanoparticles to the polymer matrix improves the mechanical properties, increases the roughness, and forms the morphologies that mimic bone nanostructures. Therefore, the fundamental design of hydroxyapatite nanoparticles and their surfaces was suggested from various aspects for biomedical applications.
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Affiliation(s)
- Takuya Kataoka
- Faculty of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Zizhen Liu
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
- Research Fellow of the Japan Society for the Promotion of Science (DC), 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Iori Yamada
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
| | - Tania Guadalupe Peñaflor Galindo
- Department of General Education, National Institute of Technology, Nagaoka College, 888 Nishikatakai, Nagaoka, Niigata 940-8532, Japan
| | - Motohiro Tagaya
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
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9
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Valenzuela-Fernández RA, Maine A, Cardin J, Portier X, Labbé C, Pinto C, Melo F, Pizarro N, Vargas V, Segura C, Galdámez A. Photoluminescence modification of europium(III)-doped MAl 2O 4 (M = Zn, Mg) spinels induced by Ag@SiO 2 core-shell nanoparticles. NANOSCALE 2024; 16:13161-13170. [PMID: 38913015 DOI: 10.1039/d4nr01526f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
In recent years, there has been an increasing interest in developing new inorganic compounds with exceptional properties for advanced materials. Specifically, compounds containing europium have attracted much attention due to their luminescent properties. These compounds are used in electronics, biotechnology, medicine, and catalysis. Eu is known for its characteristic red emission, which can be influenced by the environment. This study investigates the surface-enhancement luminescence of europium-doped spinel oxides using modified surface with silver (Ag@SiO2 core-shell) nanoparticles as the enhancers. The europium-doped spinels were synthesized through a sol-gel method, and characterization techniques were used to analyze their structure and morphology. Photoluminescence spectra exhibited characteristic Eu3+ transitions, with the hypersensitive transition being the most prominent. The interaction with an Ag@SiO2 modified-surface led to a significant increase in photoluminescence. The study also analyzed the photoluminescence excitation and lifetimes of the oxides, leading to a 7.3-fold increase in photoluminescence. The improvements observed in the luminescence of these tailor-made materials show their potential interest in next-generation technologies.
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Affiliation(s)
| | - Arianne Maine
- CIMAP, CEA, CNRS, UMR6252, Normandie Université, ENSICAEN UNICAEN, 14050, Caen Cedex 4, France.
| | - Julien Cardin
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Isla Teja, P.O. Box 567, Valdivia, Chile
| | - Xavier Portier
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Isla Teja, P.O. Box 567, Valdivia, Chile
| | - Christophe Labbé
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Isla Teja, P.O. Box 567, Valdivia, Chile
| | - Cristóbal Pinto
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, P.O. Box 653, Chile.
| | - Francisco Melo
- CIMAP, CEA, CNRS, UMR6252, Normandie Université, ENSICAEN UNICAEN, 14050, Caen Cedex 4, France.
| | - Nancy Pizarro
- Universidad Andrés Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Quillota 980, Viña del Mar, Chile
| | - Víctor Vargas
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, P.O. Box 653, Chile.
| | - Camilo Segura
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, P.O. Box 653, Chile.
| | - Antonio Galdámez
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, P.O. Box 653, Chile.
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10
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Simms CH, Nielsen VRM, Sørensen TJ, Faulkner S, Langton MJ. Photoswitchable luminescent lanthanide complexes controlled and interrogated by four orthogonal wavelengths of light. Phys Chem Chem Phys 2024; 26:18683-18691. [PMID: 38922672 DOI: 10.1039/d4cp02243b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Optical information storage requires careful control of excitation and emission wavelengths in a reversible and orthogonal manner to enable efficient reading, writing, and erasing of information. Photochromic systems, in which a photoswitch is typcially coupled to an emissive organic fluorophore, have much promise in this regard. However, these suffer from considerable spectral overlap between the switch and fluorophore, such that their emissive and photoswitchable properties are not orthogonal. Here, we overcome this limitation by coupling visible/NIR emissive lanthanide complexes with molecular photoswitches, enabling reversible and orthogonal photoswitching with visible light. Crucially, photoswitching does not lead to sensitised emission from the lanthanide, while excitation of the lanthanide does not induce photoswitching, enabling the state of the system to be probed without perturbation of the switch. This opens up the possibility of developing multi-colour read-write methods for information storage using emissive photoswitches.
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Affiliation(s)
- Charlie H Simms
- Department of Chemistry, University of Oxford Chemistry Research Laboratory, Mansfield road, Oxford, OX1 3TA, UK.
| | - Villads R M Nielsen
- Nano-Science Centre and Department of Chemistry University of Copenhagen Universitetsparken 5, 2100 København Ø, Denmark
| | - Thomas Just Sørensen
- Nano-Science Centre and Department of Chemistry University of Copenhagen Universitetsparken 5, 2100 København Ø, Denmark
| | - Stephen Faulkner
- Department of Chemistry, University of Oxford Chemistry Research Laboratory, Mansfield road, Oxford, OX1 3TA, UK.
| | - Matthew J Langton
- Department of Chemistry, University of Oxford Chemistry Research Laboratory, Mansfield road, Oxford, OX1 3TA, UK.
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11
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Redhu S, Singh D, Nehra K, Kumar S, Malik RS, Kumar P, Sindhu J. Computational and optoelectronic investigations of red-emissive europium (III) β-diketonate with n-donor ligands for display applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124307. [PMID: 38653075 DOI: 10.1016/j.saa.2024.124307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
Europium complexes exhibiting red luminescence were prepared by employing β-diketone as main ligand and 1,10-phenanthroline as an additional ligand. Various methods, including 1H NMR, IR spectroscopy and analysis of optical band gap were employed to examine these complexes. The luminescent photophysical properties were investigated using PL spectroscopy and theoretical calculations were conducted to explore radiative transitions probabilities and Judd-Ofelt (J-O) parameters for transitions of type 5D0 → 7F2, 4. J-O parameters were determined using the JOES computer program and results were in good agreement with the outcomes obtained experimentally. The luminescence analysis results have verified the vibrant, single-color red emission of the prepared complexes. The band gap of ternary europium complexes, determined optically, electronically, and theoretically, falls within the range of 3-4 eV. This similarity indicates that these complexes are potentially suitable as semiconductor materials. The results from absorption, electrochemical and photophysical analyses indicate the potential use of synthesized complexes in lighting and display applications.
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Affiliation(s)
- Sonia Redhu
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Devender Singh
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
| | - Kapeesha Nehra
- Department of Chemistry, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Sumit Kumar
- Department of Chemistry, DCR University of Science and Technology, Murthal 131039, Haryana, India
| | - Rajender Singh Malik
- Department of Chemistry, DCR University of Science and Technology, Murthal 131039, Haryana, India
| | - Parvin Kumar
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Jayant Sindhu
- Department of Chemistry, COBSandH, CCS Haryana Agricultural University, Hisar 125004, Haryana, India
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12
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Kalluvettukuzhy NK, Maciejczyk MR, Robertson N. Thermally activated delayed fluorescence emitters for efficient sensitization of europium(III). Phys Chem Chem Phys 2024; 26:18129-18137. [PMID: 38896039 DOI: 10.1039/d4cp01610f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
We demonstrate for the first time a unique approach to efficiently sensitize lanthanides(III) using photosensitizer ligands that show thermally activated delayed fluorescence (TADF). TADF ligands have very small singlet (S1) and triplet (T1) excited state energy splitting and S1/T1 energy levels are in optimum energy to the acceptor level of Eu(III) to enable high energy transfer efficiency. The synthesized Eu(III) coordination polymers with TADF ligands showed bright red luminescence with an outstanding sensitization efficiency of 90-94% and Φtot of 79-85% in poly(methyl methacrylate) encapsulated films. This rational approach of efficiently sensitizing lanthanides with TADF ligands demonstrates their great potential for imaging and optical communications applications.
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Affiliation(s)
- Neena K Kalluvettukuzhy
- EaStCHEM School of Chemistry, The University of Edinburgh, Kings Buildings, Edinburgh EH9 3FJ, UK.
| | - Michal R Maciejczyk
- EaStCHEM School of Chemistry, The University of Edinburgh, Kings Buildings, Edinburgh EH9 3FJ, UK.
| | - Neil Robertson
- EaStCHEM School of Chemistry, The University of Edinburgh, Kings Buildings, Edinburgh EH9 3FJ, UK.
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13
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Dong Z, Song B, Ma H, Gao X, Zhang W, Yuan J. A strategy to enhance the water solubility of luminescent β-diketonate-Europium(III) complexes for time-gated luminescence bioassays. Talanta 2024; 274:126000. [PMID: 38608630 DOI: 10.1016/j.talanta.2024.126000] [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: 12/04/2023] [Revised: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024]
Abstract
Luminescent β-diketonate-europium(III) complexes have been found a wide range of applications in time-gated luminescence (TGL) bioassays, but their poor water solubility is a main problem that limits their effective uses. In this work we propose a simple and general strategy to enhance the water solubility of luminescent β-diketonate-europium(III) complexes that permits facile synthesis and purification. By introducing the fluorinated carboxylic acid group into the structures of β-diketone ligands, two highly water-soluble and luminescent Eu3+ complexes, PBBHD-Eu3+ and CPBBHD-Eu3+, were designed and synthesized. An excellent solubility exceeding 20 mg/mL for PBBHD-Eu3+ was found in a pure aqueous buffer, while it also displayed strong and long-lived luminescence (quantum yield φ = 26%, lifetime τ = 0.49 ms). After the carboxyl groups of PBBHD-Eu3+ were activated, the PBBHD-Eu3+-labeled streptavidin-bovine serum albumin (SA-BSA) conjugate was prepared, and successfully used for the immunoassay of human α-fetoprotein (AFP) and the imaging of an environmental pathogen Giardia lamblia under TGL mode, which demonstrated the practicability of PBBHD-Eu3+ for highly sensitive TGL bioassays. The carboxyl groups of PBBHD can also be easily derivatized with other reactive chemical groups, which enables PBBHD-Eu3+ to meet diverse requirements of biolabeling technique, to provide new opportunities for developing functional europium(III) complex biolabels serving for TGL bioassays.
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Affiliation(s)
- Zhiyuan Dong
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Bo Song
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China.
| | - Hua Ma
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xiaona Gao
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Wenzhu Zhang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Jingli Yuan
- College of Life Science, Dalian Minzu University, 18 Liaohe West Road, Jinzhou New District, Dalian, 116600, China.
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14
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Mortensen SS, Nielsen VRM, Sørensen TJ. Contrasting impact of coordination polyhedra and site symmetry on the electronic energy levels in nine-coordinated Eu(III) and Sm(III) crystals structures determined from single crystal luminescence spectra. Dalton Trans 2024; 53:10079-10092. [PMID: 38712555 DOI: 10.1039/d4dt00157e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Lanthanide luminescence is characterised by "forbidden" 4f-4f transitions and a complicated electronic structure. Our understanding of trivalent lanthanide(III) ion luminescence is centered on Eu3+ because absorbing and emitting transitions in Eu3+ occur from a single electronic energy level. In Sm3+ both absorbing and emitting multiplets have a larger multiplicity. A band arising in transitions from the first emitting state multiplet to the ground state multiplet will have nine lines for a Sm3+ complex. In this study, high-resolution emission and excitation spectra were used to determine the electronic energy levels for the lowest multiplet and first emitting multiplet in four Sm3+ compounds with either tricapped trigonal prismatic TTP or capped square antiprismatic cSAP coordination polyhedra but different site symmetry. This was achieved by the use of Boltzmann distribution population analysis and experimentally determined transition probabilities from emission and excitation spectra. Using this analysis it was possible to show the effect of changing three oxygen atoms with three nitrogen atoms in the donor set for two compounds with the same coordination polyhedra and site symmetry. This work celebrates the 40th anniversary of Kirby and Richardson's first report of [Eu(ODA)3]3- luminescence.
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Affiliation(s)
- Sabina Svava Mortensen
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
| | - Villads R M Nielsen
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
| | - Thomas Just Sørensen
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
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15
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Qi J, Zhang P, Zhang T, Zhang R, Zhang Q, Wang J, Zong M, Gong Y, Liu X, Wu X, Li B. Metal-doped carbon dots for biomedical applications: From design to implementation. Heliyon 2024; 10:e32133. [PMID: 38868052 PMCID: PMC11168406 DOI: 10.1016/j.heliyon.2024.e32133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/24/2024] [Accepted: 05/28/2024] [Indexed: 06/14/2024] Open
Abstract
Carbon dots (CDs), as a new kind of fluorescent nanomaterials, show great potential for application in several fields due to their unique nano-size effect, easy surface functionalization, controllable photoluminescence, and excellent biocompatibility. Conventional preparation methods for CDs typically involve top-down and bottom-up approaches. Doping is a major step forward in CDs design methodology. Chemical doping includes both non-metal and metal doping, in which non-metal doping is an effective strategy for modulating the fluorescence properties of CDs and improving photocatalytic performance in several areas. In recent years, Metal-doped CDs have aroused the interest of academics as a promising nano-doping technique. This approach has led to improvements in the physicochemical and optical properties of CDs by altering their electron density distribution and bandgap capacity. Additionally, the issues of metal toxicity and utilization have been addressed to a large extent. In this review, we categorize metals into two major groups: transition group metals and rare-earth group metals, and an overview of recent advances in biomedical applications of these two categories, respectively. Meanwhile, the prospects and the challenges of metal-doped CDs for biomedical applications are reviewed and concluded. The aim of this paper is to break through the existing deficiencies of metal-doped CDs and fully exploit their potential. I believe that this review will broaden the insight into the synthesis and biomedical applications of metal-doped CDs.
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Affiliation(s)
- Jin Qi
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Pengfei Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Tong Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Ran Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Qingmei Zhang
- Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi, China
| | - Jue Wang
- The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Mingrui Zong
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Yajuan Gong
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Xiaoming Liu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Xiuping Wu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
| | - Bing Li
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, Shanxi, China
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, 030001 Shanxi, China
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16
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Shimoji H, Aoyama Y, Inage K, Nakamura M, Yanagihara T, Yuhara K, Kitagawa Y, Hasegawa Y, Ito S, Tanaka K, Imoto H, Naka K. Highly Efficient and Thermally Durable Luminescence of 1D Eu 3+ Coordination Polymers with Arsenic Bridging Ligands. Chemistry 2024; 30:e202400615. [PMID: 38591237 DOI: 10.1002/chem.202400615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
In this work, bisarsine oxides were evaluated as novel bridging ligands, aiming to develop practical and efficient luminescent lanthanide coordination polymers. We have synthesized one-dimensional (1D) Eu3+ coordination polymers that incorporate bisarsine oxide bridging ligands and hexafluoroacetylacetonate anions. These polymers exhibited a denser packing of chains compared to analogous polymers bridged with bisphosphine oxides. The coordination polymers demonstrated exceptional thermal stability and substantial emission quantum yields. Additionally, the bisarsine oxides induced a pronounced polarization effect, facilitating a sensitive electric dipole transition that yields considerably narrow band red emission. Remarkably, the Eu3+ coordination polymers with bisarsine oxides maintained intense emission even at 550 K. A distinctive feature of these polymers is their heating-induced emission enhancement observed when the temperature was increased from 300 K to 400 K.
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Affiliation(s)
- Haruki Shimoji
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yuto Aoyama
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kota Inage
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Masashi Nakamura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Takumi Yanagihara
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuhiro Yuhara
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido, 001-0021, Japan
| | - Shunichiro Ito
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- FOREST, JST, Honcho 4-1-8, Kawaguchi, Saitama, 332-0012, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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17
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Freire RVM, Coelho DMA, Maciel LG, Jesus LT, Freire RO, Dos Anjos JV, Junior SA. Luminescent Supramolecular Metallogels: Drug Loading and Eu(III) as Structural Probe. Chemistry 2024; 30:e202400680. [PMID: 38593232 DOI: 10.1002/chem.202400680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/11/2024]
Abstract
Supramolecular metallogels combine the rheological properties of gels with the color, magnetism, and other properties of metal ions. Lanthanide ions such as Eu(III) can be valuable components of metallogels due to their fascinating luminescence. In this work, we combine Eu(III) and iminodiacetic acid (IDA) into luminescent hydrogels. We investigate the tailoring of the rheological properties of these gels by changes in their metal:ligand ratio. Further, we use the highly sensitive Eu(III) luminescence to obtain information about the chemical structure of the materials. In special, we take advantage of computational calculations to employ an indirect method for structural elucidation, in which the simulated luminescent properties of candidate structures are matched to the experimental data. With this strategy, we can propose molecular structures for different EuIDA gels. We also explore the usage of these gels for the loading of bioactive molecules such as OXA, observing that its aldose reductase activity remains present in the gel. We envision that the findings from this work could inspire the development of luminescent hydrogels with tunable rheology for applications such as 3D printing and imaging-guided drug delivery platforms. Finally, Eu(III) emission-based structural elucidation could be a powerful tool in the characterization of advanced materials.
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Affiliation(s)
- Rafael V M Freire
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
| | - Dhiego M A Coelho
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
| | - Larissa G Maciel
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
| | - Larissa T Jesus
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
- Pople Computational Chemistry Laboratory, Department of Chemistry, Federal University of Sergipe, 49107-230, São Cristóvão, SE, Brazil
| | - Ricardo O Freire
- Pople Computational Chemistry Laboratory, Department of Chemistry, Federal University of Sergipe, 49107-230, São Cristóvão, SE, Brazil
| | - Janaína V Dos Anjos
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
| | - Severino A Junior
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária, 50740-560, Recife, Brazil
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18
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Kofod N, Sørensen TJ. Step-wise changes in the excited state lifetime of [Eu(D 2O) 9] 3+ and [Eu(DOTA)(D 2O)] - as a function of the number of inner-sphere O-H oscillators. Dalton Trans 2024; 53:9741-9749. [PMID: 38780119 DOI: 10.1039/d4dt00744a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Lanthanide luminescence is dominated by quenching by high-energy oscillators in the chemical environment. The rate of non-radiative energy transfer to a single H2O molecule coordinated to a Eu3+ ion exceeds the usual rates of emission by an order of magnitude. We know these rates, but the details of these energy transfer processes are yet to be established. In this work, we study the quenching rates of [Eu(D2O)9]3+ and [Eu(DOTA)(D2O)]- in H2O/D2O mixtures by sequentially exchanging the deuterons with protons. Flash freezing the solutions allows us to identify species with various D/H contents in solution and thus to quantify the energy transfer processes to individual OH-oscillators. This is not possible in solution due to fast exchange in the ensembles present at room temperature. We conclude that the energy transfer processes are accurately described, predicted, and simulated using a step-wise addition of the rates of quenching by each O-H oscillator. This documents the sequential increase in the rate of the energy transfer processes in the quenching of lanthanide luminescence, and further provides a methodology to identify isotopic impurities in deuterated lanthanide systems in solution.
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Affiliation(s)
- Nicolaj Kofod
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M9 13PL, UK.
- Department of Chemistry and Nano-Science Centre, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Thomas Just Sørensen
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M9 13PL, UK.
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19
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Altowyan AS, Coban MB, Kaynar UH, Hakami J, Ayvacikli M, Hiziroglu A, Can N. Temperature-dependent photoluminescence of novel Eu 3+, Tb 3+, and Dy 3+ doped LaCa 4O(BO 3) 3: Insights at low and room temperatures. Appl Radiat Isot 2024; 208:111308. [PMID: 38555847 DOI: 10.1016/j.apradiso.2024.111308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
This study explores the structural and optical qualities of LaCa4O(BO3)3 (LACOB) phosphors doped with Eu3+, Dy3+, and Tb3+ using a microwave-assisted sol-gel technique. It uncovers oxygen-related luminescence defects in LACOB, highlighting emission peaks at 489 and 585 nm for Dy3+, a distinct sharp peak at 611 nm for Eu3+ in the red spectrum, and a notable green emission for Tb3+ due to specific transitions. The photoluminescence (PL) analysis indicates that luminescence is optimized through precise doping, leveraging dipole interactions, and localized resonant energy transfer, which are influenced by dopant concentration and spatial configuration. Temperature studies show emission intensity variations, particularly noticeable below 100 K for Tb3+ doped samples, demonstrating the nuanced balance between thermal quenching and luminescence efficiency. This temperature dependency, alongside the identified optimal doping conditions, underscores the potential of these materials for advanced photonic applications, offering insights into their thermal behavior and emission mechanisms under different conditions.
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Affiliation(s)
- Abeer S Altowyan
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Kingdom of Saudi Arabia
| | - M B Coban
- Balikesir University, Faculty of Arts and Sciences, Department of Physics, Balikesir, Turkiye
| | - U H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkiye; Bakırçay University, Biomedical Technologies Design Application and Research Center, Menemen, Izmir, Turkiye
| | - Jabir Hakami
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia
| | - M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkiye
| | - A Hiziroglu
- Department of Management Information Systems, Izmir Bakirçay University, Izmir, 35665, Turkiye
| | - N Can
- Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia.
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20
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Tsurui M, Takizawa R, Kitagawa Y, Wang M, Kobayashi M, Taketsugu T, Hasegawa Y. Chiral Tetrakis Eu(III) Complexes with Ammonium Cations for Improved Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2024:e202405584. [PMID: 38797714 DOI: 10.1002/anie.202405584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/30/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Large dissymmetry factor of the circularly polarized luminescence (gCPL) was observed in ligand and coordination tuned chiral tetrakis europium (Eu(III)) complexes with ammonium cations. The gCPL value was estimated to be -1.54, which is the largest among chiral luminescent molecules. Through photophysical measurements, single crystal X-ray structural analyses and quantum chemical calculations, changes in the geometric and electronic structures were observed for a series of chiral tetrakis Eu(III) complexes which enhanced the gCPL value. The emission quantum yield and photosensitized energy transfer efficiencies of chiral Eu(III) complexes with ammonium cations were also larger than those of chiral Eu(III) complex with Cs+. Based on the systematic modifications and analyses for chiral tetrakis Eu(III) complex, effect of the ammonium cation on enhanced CPL brightness is reported.
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Affiliation(s)
- Makoto Tsurui
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan)
| | - Ryohei Takizawa
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan)
| | - Yuichi Kitagawa
- Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan)
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan)
| | - Mengfei Wang
- Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan)
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan)
| | - Masato Kobayashi
- Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan)
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan)
| | - Tetsuya Taketsugu
- Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan)
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan)
| | - Yasuchika Hasegawa
- Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan)
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan)
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21
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Yordanova A, Aleksandrov L, Milanova M, Iordanova R, Petrova P, Nedyalkov N. Effect of the Addition of WO 3 on the Structure and Luminescent Properties of ZnO-B 2O 3:Eu 3+ Glass. Molecules 2024; 29:2470. [PMID: 38893347 PMCID: PMC11173849 DOI: 10.3390/molecules29112470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Glasses with the compositions in mol % of 50ZnO:(50 - x)B2O3:0.5Eu2O3:xWO3, x = 0, 1, 3, 5 and 10 were obtained by applying the melt-quenching method and investigated by Raman spectroscopy, DSC analysis and photoluminescence (PL) spectroscopy. Raman spectra revealed that tungstate ions incorporate into the base zinc borate glass as tetrahedral [WO4]2- groups, and octahedral [WØ4O2]2- species with four bridging and two non-bridging oxygen atoms. There are also metaborate, [BØ2O]- and pyroborate units, [B2O5]4-, in the glass networks. The glasses are characterized by good transmission in the visible region, at about 80%. Photoluminescence (PL) spectra evidenced that WO3 is an appropriate constituent for the modification of zinc borate glass structure and for enhancing the Eu3+ luminescent intensity. The most intense luminescence peak observed, at 612 nm, suggests that the glasses are potential materials for red emission.
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Affiliation(s)
- Aneliya Yordanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, G. Bonchev, Str., bld. 11, 1113 Sofia, Bulgaria; (A.Y.); (M.M.); (R.I.)
| | - Lyubomir Aleksandrov
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, G. Bonchev, Str., bld. 11, 1113 Sofia, Bulgaria; (A.Y.); (M.M.); (R.I.)
| | - Margarita Milanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, G. Bonchev, Str., bld. 11, 1113 Sofia, Bulgaria; (A.Y.); (M.M.); (R.I.)
| | - Reni Iordanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, G. Bonchev, Str., bld. 11, 1113 Sofia, Bulgaria; (A.Y.); (M.M.); (R.I.)
| | - Petia Petrova
- Institute of Optical Materials and Technologies “Acad. Jordan Malinowski”, Bulgarian Academy of Sciences, Blvd. Akad. G. Bonchev 109, 1113 Sofia, Bulgaria;
| | - Nikolay Nedyalkov
- Institute of Electronics, Bulgarian Academy of Sciences, Tzarigradsko Shousse 72, 1784 Sofia, Bulgaria;
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22
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Jahanbazi F, Mao Y. Negative Thermal Expansion Materials as Anti-Thermal-Quenching Phosphor Matrixes: Status, Opportunities, and Challenges. Inorg Chem 2024; 63:8989-9001. [PMID: 38710110 DOI: 10.1021/acs.inorgchem.4c00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Inorganic phosphor materials often face the common phenomenon of luminescence thermal quenching (TQ), which deteriorates their device performance and consequently limits their applicability for broad applications. Thus, exploring thermally stable and even anti-TQ phosphors is viable to meet the urgent requirements of lighting technology and many other luminescence-based applications. One of the emerging approaches devoted to solving the TQ issue of phosphors, especially at elevated temperatures, is to employ negative thermal expansion (NTE) properties occurring in some unique inorganic materials. The present Review focuses on the progress of exploring NTE-based inorganic phosphor materials that have demonstrated unusual negative TQ with enhancing upconversion and downshift luminescence upon elevating temperature. We have also provided a brief history of exploring NTE phosphors for thermally stable and enhanced emission along with the investigation methods and proposed mechanisms of these unusual phenomena. To summarize, we have further discussed some opportunities and challenges that NTE materials face as host matrixes for anti-TQ phosphors. Overall, the aim of this Review is to stimulate the exploration of new NTE-based inorganic phosphors, the correlation of their fundamental structural changes with varying temperature, and the investigation of their potential for broad applications.
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Affiliation(s)
- Forough Jahanbazi
- Department of Chemistry, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
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23
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Quindoza GM, Horimoto R, Nakagawa Y, Aida Y, Irawan V, Norimatsu J, Mizuno HL, Anraku Y, Ikoma T. Folic acid-mediated enhancement of the diagnostic potential of luminescent europium-doped hydroxyapatite nanocrystals for cancer biomaging. Colloids Surf B Biointerfaces 2024; 239:113975. [PMID: 38762934 DOI: 10.1016/j.colsurfb.2024.113975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/09/2024] [Accepted: 05/15/2024] [Indexed: 05/21/2024]
Abstract
Early and accurate cancer diagnosis is crucial for improving patient survival rates. Luminescent nanoparticles have emerged as a promising tool in fluorescence bioimaging for cancer diagnosis. To enhance diagnostic accuracy, ligands promoting endocytosis into cancer cells are commonly incorporated onto nanoparticle surfaces. Folic acid (FA) is one such ligand, known to specifically bind to folate receptors (FR) overexpressed in various cancer cells such as cervical and ovarian carcinoma. Therefore, surface modification of luminescent nanoparticles with FA can enhance both luminescence efficiency and diagnostic accuracy. In this study, luminescent europium-doped hydroxyapatite (EuHAp) nanocrystals were prepared via hydrothermal method and subsequently modified with (3-Aminopropyl)triethoxysilane (APTES) followed by FA to target FR-positive human cervical adenocarcinoma cell line (HeLa) cells. The sequential grafting of APTES and then FA formed a robust covalent linkage between the nanocrystals and FA. Rod-shaped FA-modified EuHAp nanocrystals, approximately 100 nm in size, exhibited emission peaks at 589, 615, and 650 nm upon excitation at 397 nm. Despite a reduction in photoluminescence intensity following FA modification, fluorescence microscopy revealed a remarkable 120-fold increase in intensity compared to unmodified EuHAp, attributed to the enhanced uptake of FA-modified EuHAp. Additionally, confocal microscope observations confirmed the specificity and the internalization of FA-modified EuHAp nanocrystals in HeLa cells. In conclusion, the modification of EuHAp nanocrystals with FA presents a promising strategy to enhance the diagnostic potential of cancer bioimaging probes.
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Affiliation(s)
- Gerardo Martin Quindoza
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Rui Horimoto
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yasuhiro Nakagawa
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuta Aida
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Vincent Irawan
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Jumpei Norimatsu
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hayato Laurence Mizuno
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yasutaka Anraku
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Toshiyuki Ikoma
- Tokyo Institute of Technology, School of Materials and Chemical Technology, Department of Materials Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
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24
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Kitagawa Y, Ueda J, Tanabe S. A brief review of characteristic luminescence properties of Eu 3+ in mixed-anion compounds. Dalton Trans 2024; 53:8069-8092. [PMID: 38686957 DOI: 10.1039/d4dt00191e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Trivalent europium (Eu3+) ions show red luminescence with sharp spectral lines owing to the intraconfigurational 4f-4f transitions. Because of their characteristic luminescence properties, various Eu3+-doped inorganic compounds have been developed to meet the demands of optoelectronic devices. Regardless of shielding by the outer 5s and 5p orbitals, the properties of the Eu3+:4f-4f transition depend on the local environment, such as the shapes of the coordination polyhedra, site symmetry, nephelauxetic effects, crystal field effects, and bonding character. Mixed-anion coordination, where multiple types of anions surround a single Eu3+ ion, can directly affect the optical properties of Eu3+. We review the luminescence properties of Eu3+ ions in mixed-anion compounds of the oxynitride YSiO2N and oxyhalides YOX (X = Cl or Br). Oxynitride and oxyhalide coordination results in characteristic transition probabilities and branching ratios of the 5D0 → 7F0-6 transitions due to distorted structural environments and red-shifted charge transfer excitation bands due to an upward shift of the valence band. The expected and experimentally observed features of Eu3+ luminescence in mixed-anion compounds are outlined based on band and Judd-Ofelt theories. Future applications of the intense red luminescence at ∼620 nm under near-ultraviolet light illumination in Eu3+-doped mixed-anion compounds are introduced, and material design guidelines for new functional Eu3+-doped phosphors are presented.
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Affiliation(s)
- Yuuki Kitagawa
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 563-8577 Osaka, Japan.
- Graduate School of Human and Environmental Studies, Kyoto University, 606-8501 Kyoto, Japan
| | - Jumpei Ueda
- Graduate School of Human and Environmental Studies, Kyoto University, 606-8501 Kyoto, Japan
- Graduate School of Advanced Science and Technology, Japan Advanced Industrial Science and Technology, Nohmi, 923-1292 Ishikawa, Japan
| | - Setsuhisa Tanabe
- Graduate School of Human and Environmental Studies, Kyoto University, 606-8501 Kyoto, Japan
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25
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Cicconi MR, Deng H, Otsuka T, Telakula Mahesh A, Khansur NH, Hayakawa T, de Ligny D. Photoluminescence Study of Undoped and Eu-Doped Alkali-Niobate Aluminosilicate Glasses and Glass-Ceramics. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2283. [PMID: 38793352 PMCID: PMC11122913 DOI: 10.3390/ma17102283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/01/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024]
Abstract
In this study, the photoluminescence (PL) behavior of two aluminosilicate glass series containing alkali-niobates ranging from 0.4 to 20 mol% was investigated. The glasses exhibit an intense visible emission centered at ~18,400 cm-1 for the peralkaline series and at higher energies (~19,300 cm-1) for the metaluminous glasses. However, the photoluminescence emission intensity varies significantly with the niobate content and the bulk chemistry. PL and fluorescence lifetime measurements indicate that the broad emission bands result from the overlap of different niobate populations, whose distribution changes with niobate content. The distinct PL behavior in the two glass series was related to the structural evolution of the niobate units upon niobium addition. An enhancement of the visible emission was observed for a higher fraction of distorted [NbO6] units. Eu-doping was carried out as a structural probe of the glass network, and also to determine if these glasses could be used as potential rare earth element (REE) activators. The crystal field strength around Eu ions is strongly dependent on the bulk chemistry and the niobate content. Furthermore, the peralkaline series showed energy transfer from the host [NbO6] to Eu3+, confirming the feasibility of exploring niobate glasses and glass-ceramics as lanthanide ion-activated luminescent materials. In addition, glass-ceramics (GCs) containing alkali-niobate phases with a perovskite-like structure were developed and studied to verify the optical performance of these materials. It was verified that the bulk chemistry influences crystallization behavior, and also the photoluminescence response. The transparent GC from the metaluminous series exhibits a quenching of the Eu3+ emission, whereas an enhanced emission intensity is observed for the peralkaline GC. The latter shows a strong excitation-dependent PL emission, suggesting energy transfer and migration of electronic excitation from one Eu population to another. Additionally, Eu3+ emissions arising from the D15 and D25 excited states were observed, highlighting the low phonon energy achievable in niobo-aluminosilicate hosts.
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Affiliation(s)
- Maria Rita Cicconi
- Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (H.D.); (A.T.M.); (N.H.K.); (D.d.L.)
| | - Hongyi Deng
- Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (H.D.); (A.T.M.); (N.H.K.); (D.d.L.)
| | - Takahito Otsuka
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya 466-8555, Japan; (T.O.); (T.H.)
| | - Aadhitya Telakula Mahesh
- Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (H.D.); (A.T.M.); (N.H.K.); (D.d.L.)
| | - Neamul Hayet Khansur
- Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (H.D.); (A.T.M.); (N.H.K.); (D.d.L.)
| | - Tomokatsu Hayakawa
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya 466-8555, Japan; (T.O.); (T.H.)
| | - Dominique de Ligny
- Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (H.D.); (A.T.M.); (N.H.K.); (D.d.L.)
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26
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Fang D, Yang X, Li J, Zhang Z, Gao Y, Xiao C. Preorganization Effects on Eu(III) Ion Coordination by Dipyridyl-Phenanthroline Ligands: A Combined Experimental and Theoretical Analysis. Inorg Chem 2024; 63:8171-8179. [PMID: 38655575 DOI: 10.1021/acs.inorgchem.4c00395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Although 1,10-phenanthroline has been proven to hold a strong complexing capacity for f-block elements and their derivatives have been applied in many fields, research on more highly or completely rigid phenanthroline ligands is still rare due to the challenging syntheses. Here, we reported three tetradentate ligands 2,9-di(pyridin-2-yl)-1,10-phenanthroline (L1), 12-(pyridin-2-yl)-5,6-dihydroquinolino[8,7b][1,10]phenanthroline (L2), and 5,6,11,12-tetrahydrobenzo[2,1-b:3,4-b']bis([1,10]phenanthroline) (L3) with increasing preorganization on the side chain; among which, L3 is fully preorganized. Their complexation reactions with Eu(III) were systematically investigated by electrospray ionization mass spectrometry (ESI-MS), UV-vis titrations, and single-crystal structures. It is found that all three ligands form only 1:1 M/L complexes with Eu(III). The single-crystal structures revealed that the three ligands hold similar coordination modes, while their stability constants determined by UV-vis titrations were L3 (4.80 ± 0.01) > L2 (4.38 ± 0.01) > L1 (3.88 ± 0.01). This trend is supported not only by the thermodynamic stability of rigid ligands compared to free ligands but also by the conclusion that rigid ligands exhibit faster reaction rates (lower energy barrier) than free ligands kinetically. This work is helpful in providing theoretical guidance for the subsequent development of highly preorganized chelating ligands with strong coordination ability and high selectivity for f-block elements.
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Affiliation(s)
- Dong Fang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Xiaofan Yang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Jiarui Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
| | - Zhiyuan Zhang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
| | - Yang Gao
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China
| | - Chengliang Xiao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
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27
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Li M, Wang X, Cao X, He Z, Liang C, Ju J, You F. In situ observation of thermal-driven structural transitions of a β-NaYF 4 single nanoparticle aided with correlative cathodoluminescence electron microscopy. NANOSCALE 2024; 16:8661-8671. [PMID: 38619542 DOI: 10.1039/d4nr00442f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
NaYF4 systems have been widely studied as up-conversion host matrices, and their phase transitions are flexible and worth investigating in great detail. Herein, the evolution of morphology and crystal structure of a Eu3+-doped β-NaYF4 single nanoparticle heated in an air atmosphere was investigated using in situ transmission electron microscopy (TEM). The annealing process revealed that the hexagonal β-NaYF4 phase undergoes sequential transformations into high-temperature cubic phases at both 350 °C and 500 °C. The emission characteristics of Eu3+ in the single nanoparticle after heating treatment were also analyzed using Correlative Cathodoluminescence Electron Microscopy (CCLEM). The results of CCLEM suggest a gradual decrease followed by a subsequent increase in structural symmetry. A comprehensive spectroscopic and structural analysis encapsulates the entire transformation process as NaYF4 → YOF → Y2O3. In situ energy dispersive spectroscopy analyses (EDS) support this reaction process. The aforementioned technique yields correlative lattice-resolved TEM images and nanoscale spectroscopic information, which can be employed to assess the structure-function relationships on the nanoscale.
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Affiliation(s)
- Mingxing Li
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Xiaoge Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Xiaofan Cao
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Zhiqun He
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
| | - Chunjun Liang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
| | - Jing Ju
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Fangtian You
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
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28
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Caffrey DF, Gorai T, Rawson B, Martínez‐Calvo M, Kitchen JA, Murray NS, Kotova O, Comby S, Peacock RD, Stachelek P, Pal R, Gunnlaugsson T. Ligand Chirality Transfer from Solution State to the Crystalline Self-Assemblies in Circularly Polarized Luminescence (CPL) Active Lanthanide Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307448. [PMID: 38447160 PMCID: PMC11095229 DOI: 10.1002/advs.202307448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/30/2024] [Indexed: 03/08/2024]
Abstract
The synthesis of a family of chiral and enantiomerically pure pyridyl-diamide (pda) ligands that upon complexation with europium [Eu(CF3SO3)3] result in chiral complexes with metal centered luminescence is reported; the sets of enantiomers giving rise to both circular dichroism (CD) and circularly polarized luminescence (CPL) signatures. The solid-state structures of these chiral metallosupramolecular systems are determined using X-ray diffraction showing that the ligand chirality is transferred from solution to the solid state. This optically favorable helical packing arrangement is confirmed by recording the CPL spectra from the crystalline assembly by using steady state and enantioselective differential chiral contrast (EDCC) CPL Laser Scanning Confocal Microscopy (CPL-LSCM) where the two enantiomers can be clearly distinguished.
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Affiliation(s)
- David F. Caffrey
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
| | - Tumpa Gorai
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
- Present address:
Department of Polymers and Functional MaterialsCSIR‐Indian Institute of Chemical TechnologyHyderabad500007India
| | - Bláithín Rawson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
| | - Miguel Martínez‐Calvo
- Departamento de Química Inorgánica, Facultade de QuímicaCampus VidaUniversidade de Santiago de CompostelaSantiago de Compostela15782Spain
| | - Jonathan A. Kitchen
- Chemistry, Institute of Natural and Mathematical SciencesMassey UniversityAuckland0632New Zealand
| | - Niamh S. Murray
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
| | - Oxana Kotova
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
- AMBER (Advanced Materials and Bioengineering Research) CentreTrinity College DublinThe University of DublinDublin2Ireland
| | - Steve Comby
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
| | | | | | - Robert Pal
- Department of ChemistryDurham UniversityDurhamDH1 3LEUK
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI)Trinity College DublinThe University of DublinDublin2Ireland
- AMBER (Advanced Materials and Bioengineering Research) CentreTrinity College DublinThe University of DublinDublin2Ireland
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29
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Shi R, Lin L, Wang Z, Zou Q, Mudring AV. Manipulation of Luminescence via Surface Site Occupation in Ln 3+-Doped Nanocrystals. J Am Chem Soc 2024; 146:11924-11931. [PMID: 38625035 PMCID: PMC11066861 DOI: 10.1021/jacs.4c00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024]
Abstract
Ln3+-doped (Ln = lanthanide) nanocrystals are garnering strong interest for their potential as optical materials in various applications. For that reason, a thorough understanding of photophysical processes and ways to tune them in these materials is of great importance. This study, using Eu3+-doped Sr2YF7 as a well-suited model system, underscores the (not unexpected) significance of surface site occupation of Ln3+ and also challenges the prevailing views about their contribution to the luminescence of the system. High-temperature cation exchange and epitaxial shell growth allow nanocrystals to exclusively feature Eu3+ residing at the surface or in the interior, thereby separating their spectral responses. Meticulous experiments reveal that nanocrystals with high doping concentrations exhibit luminescence primarily from surface Eu3+, in contrast to the popular belief that luminescence from surface Ln3+ is largely negligible. The present study shows, on the one hand, the necessity to revise common ideas and also reveals the potential for manipulating the luminescence of such materials through an, until now, unperceived way of surface engineering.
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Affiliation(s)
- Rui Shi
- Intelligent
Advanced Materials, Department of Biological and Chemical Engineering
and iNANO, Aarhus University, Aarhus C 8000, Denmark
| | - Litian Lin
- State
Key Laboratory of Rare Metals Separation and Comprehensive Utilization,
Guangdong Provincial Key Laboratory of Rare Earth Development and
Application, Institute of Resources Utilization
and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510651, China
| | - Zijun Wang
- IMRB,
Université Paris Est Créteil, INSERM U955, CNRS, EMR
7000, 94010 Créteil, France
| | - Qilin Zou
- Laboratoire
de Physique de la Matière Condensée, Ecole Polytechnique, CNRS, IP Paris, 91128 Palaiseau, France
| | - Anja-Verena Mudring
- Intelligent
Advanced Materials, Department of Biological and Chemical Engineering
and iNANO, Aarhus University, Aarhus C 8000, Denmark
- Department
of Physics, Umeå University, Linnaeus väg 24, 901 87 Umeå, Sweden
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30
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Marlina D, Müllers Y, Glebe U, Kumke MU. Spectroscopic characterization of europium binding to a calmodulin-EF4 hand peptide-polymer conjugate. RSC Adv 2024; 14:14091-14099. [PMID: 38686292 PMCID: PMC11056824 DOI: 10.1039/d4ra01505c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
The emergence of biological ligand as an alternative to chemical ligands enables a sustainable lanthanide extraction route. In this study, a peptide originating from the loop of domain 4 calmodulin (EF4) was synthesized and the interaction with europium ions was monitored using time resolved laser fluorescence spectroscopy (TRLFS). Despite being retracted from its full protein structure, the twelve amino acids of calmodulin-EF4 showed binding to europium. Europium-peptide complex formation was evident by an increase in decay time from 110 to 187 μs. The spectra of europium bound to peptide can be easily distinguished from the free europium ion as the 5D0 → 7F2 peak intensifies. When europium bound to the peptide-polymer conjugate, the decay time was further increased to 259 μs. This suggests that lanthanide binding can be enhanced by immobilizing the short peptide into a polymer matrix. The europium-peptide/conjugate bond was reversible, triggered by pH, promoting peptide reusability. Due to the fact that the study was conducted exclusively in water, it suggests minimal use of chemicals is possible while maintaining peptide affinity. This makes the calmodulin-EF4 peptide an ideal candidate as biological ligand. This study lays the groundwork for developing a peptide-based filter material for lanthanide separation.
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Affiliation(s)
- Dini Marlina
- University of Potsdam, Institute of Chemistry, Optical Sensing and Spectroscopy Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
| | - Yannic Müllers
- University of Potsdam, Institute of Chemistry, Polymer Materials and Polymer Technologies Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
- Fraunhofer Institute for Applied Polymer Research IAP Geiselbergstr. 69 14476 Potsdam-Golm Germany
| | - Ulrich Glebe
- University of Potsdam, Institute of Chemistry, Polymer Materials and Polymer Technologies Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
- Fraunhofer Institute for Applied Polymer Research IAP Geiselbergstr. 69 14476 Potsdam-Golm Germany
| | - Michael U Kumke
- University of Potsdam, Institute of Chemistry, Optical Sensing and Spectroscopy Karl-Liebknecht-Str. 24-25 14476 Potsdam-Golm Germany
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31
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Nunes Coelho SF, Bispo-Jr AG, de Oliveira NA, Mazali IO, Sigoli FA. Eu III and Tb III upconversion intermediated by interparticle energy transfer in functionalized NaLnF 4 nanoparticles. NANOSCALE 2024; 16:7493-7503. [PMID: 38465723 DOI: 10.1039/d4nr00574k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Lanthanide (LnIII)-doped sodium gadolinium tetrafluoride (NaGdF4) nanoparticles have been excelled as attractive upconversion systems for anti-counterfeiting or energy conversion for instance, with a special interest in the visible upconversion of EuIII and TbIII. The core@shell architecture has enabled the bright upconversion of EuIII and TbIII in this matrix by interfacial energy transfer sensibilized by the TmIII/YbIII pair. Another approach to enable EuIII and TbIII upconversion could be the interparticle energy transfer (IPET) between LnIII-doped sensitizer and acceptor nanoparticles. Yet, the low molar absorptivity of the LnIII through 4f ↔ 4f electronic transitions and the large distance between the nanoparticles are shortcomings that should decrease the energy transfer efficiency. On the other hand, it is feasible to predict that the association of organic ligands displaying large molar absorptivity on the acceptor nanoparticle surface could help to overcome the absorption limitation. Inspired by this exciting possibility, herein, we present the EuIII/TbIII upconversion intermediated by IPET between the donor TmIII, YbIII-doped NaGdF4 nanoparticle and the acceptor LnIII-doped NaGdF4 (Ln = Eu and/or Tb) nanoparticles functionalized with a series organic ligands on the surface (tta- = thenoyltrifluoroacetonate, acac- = acetylacetonate, or 3,5-bbza- = 3,5-dibromebenzoate). Either in solid state or in suspension, upon excitation at 980 nm, visible EuIII/TbIII upconversion could be observed. This emission comes from the absorption of the TmIII, YbIII pair in the donor nanoparticle, followed by IPET from the TmIII excited levels to the ligand singlet/triplet states on the acceptor nanoparticle surface, ligand-to-EuIII/TbIII energy transfer, and upconversion emission. Spectroscopic evidences from the analysis of the donor level lifetimes indicate the contribution of non-radiative energy transfer for the IPET mechanism; the radiative mechanism also contributes for the IPET. Moreover, the design herein introduced enables the development of luminescence temperature probes with relative thermal sensitivity as high as 1.67% K-1 at 373 K. Therefore, this new upconversion pathway opens an avenue of possibilities in an uncharted territory to tune the visible upconversion of LnIII ions.
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Affiliation(s)
- Sergio Fernando Nunes Coelho
- Department of Inorganic Chemistry, Institute of Chemistry, University of Campinas, Unicamp, Josué de Castro Street, Cidade Universitária, Campinas, 13083-970, Brazil.
| | - Airton Germano Bispo-Jr
- Department of Inorganic Chemistry, Institute of Chemistry, University of Campinas, Unicamp, Josué de Castro Street, Cidade Universitária, Campinas, 13083-970, Brazil.
| | - Nagyla Alves de Oliveira
- Department of Inorganic Chemistry, Institute of Chemistry, University of Campinas, Unicamp, Josué de Castro Street, Cidade Universitária, Campinas, 13083-970, Brazil.
| | - Italo Odone Mazali
- Department of Inorganic Chemistry, Institute of Chemistry, University of Campinas, Unicamp, Josué de Castro Street, Cidade Universitária, Campinas, 13083-970, Brazil.
| | - Fernando Aparecido Sigoli
- Department of Inorganic Chemistry, Institute of Chemistry, University of Campinas, Unicamp, Josué de Castro Street, Cidade Universitária, Campinas, 13083-970, Brazil.
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Ling S, Wang Y, Qin X, Chen C, Lu C, Chen J, Liao S, Huang Y, Hou L. Design of Eu 3+-Doped Fluoride Phosphor with Zero Thermal Quenching Property Based on Density Functional Theory. Inorg Chem 2024; 63:6660-6673. [PMID: 38572776 DOI: 10.1021/acs.inorgchem.3c04524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Although being applied in various fields, white light emitting diodes (WLEDs) still have drawbacks that urgently need to be conquered: the luminescent intensity of commercial phosphors sharply decreases at working temperature. In this study, we calculated the forming energy of defects and confirmed that the VNa defect state can stably exist in β-NaGdF4, by density functional theory (DFT) calculation. Furthermore, we predicted that the VNa vacancies would provide a zero thermal quenching (ZTQ) property for the β-NaGdF4-based red-light phosphor. Then, a series of β-NaGdF4:xEu3+ and β-NaGdF4:0.25Eu3+,yYb3+ red-light phosphors were synthesized by the hydrothermal method. We found that β-NaGdF4:0.25Eu3+ and β-NaGdF4:0.25Eu3+,0.005Yb3+ phosphors possess ZTQ properties at a temperature range between 303-483 K and 303-523 K, respectively. The thermoluminescence (TL) spectra were employed to calculate the depth and density of the VNa vacancies in β-NaGdF4:0.25Eu3+ and β-NaGdF4:0.25Eu3+,0.005Yb3+. Combining the DFT calculation with characterization results of TL spectra, it is concluded that electrons stored in VNa vacancies are excited to the exited state of Eu3+ to compensate for the loss of Eu3+ luminescent intensity. This will lead to an increase of luminescent intensity at high temperatures and facilitate the samples to improve ZTQ properties. WLEDs were obtained with CRI = 83.0, 81.6 and CCT = 5393, 5149 K, respectively, when phosphors of β-NaGdF4:0.25Eu3+ and β-NaGdF4:0.25Eu3+,0.005Yb3+ were utilized as the red-light source. These results indicate that these two phosphors may become reliable red-light sources with high antithermal quenching properties for WLEDs.
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Affiliation(s)
- Shaokun Ling
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Yaxiong Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Xiaoyan Qin
- School of Intelligent Equipment Engineering, Guangxi Agricultural Vocational and Technical University, Nanning 530009, China
| | - Chang Chen
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Chunchun Lu
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Jidong Chen
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Sen Liao
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Yingheng Huang
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Lei Hou
- Publicity Department and United Front Work Department, Guangxi University of Information Engineering, Nanning 530200, China
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Bondzior B. Isochemical crystallization in condensed borate LaMgB 5O 10 glass-ceramics doped with optical probe Eu 3. OPTICS LETTERS 2024; 49:2125-2128. [PMID: 38621092 DOI: 10.1364/ol.521244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/18/2024] [Indexed: 04/17/2024]
Abstract
The isochemical glass-ceramics doped with Eu3+ were prepared by the heat treatment of lanthanum magnesium borate glass. The crystalline phase was chemically identical to a glass matrix and consisted of condensed borate LaMgB5O10. The isochemical crystallization process begins with the formation of rings by BO4 groups. The emergence of ordered crystalline phase gives rise to intense charge transfer absorption of Eu3+, allowing the efficient luminescence under UV. The analysis of Judd-Ofelt parameters and comparison to purely crystalline samples obtained by solid-state synthesis reveal a switch of parameter relations from Ω2 > Ω4 for glass to Ω2 < Ω4 for crystals but also a maximum value of Ω6 for glass-ceramic sample, which indicates enhanced structural rigidity and results in superior luminescence output. The quantum yield measurements confirmed higher luminescence efficiency for glass-ceramics compared to both pure glass and pure crystalline samples.
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Zidani J, Alaoui IH, Zannen M, Birks E, Chchiyai Z, Majdoub M, Manoun B, El Marssi M, Lahmar A. On the Lanthanide Effect on Functional Properties of 0.94Na 0.5Bi 0.5TiO 3-0.06BaTiO 3 Ceramic. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1783. [PMID: 38673140 PMCID: PMC11050839 DOI: 10.3390/ma17081783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
The beneficial effects of lanthanide incorporation into 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (BNT-BT) matrix on its functional properties were investigated. The conventional solid-state method was used for synthesizing samples. The structural refinement revealed that all samples crystallized in R3c rhombohedral symmetry. Raman spectroscopy study was carried out using green laser excitation and revealed that no clear perceptible variation in frequency is observed. Dielectric measurements unveiled that the introduction of rare earth obstructed the depolarization temperature promoted in BNT-BT, the diffusive phase transition decreasing with increasing lanthanide size. Only dysprosium addition showed comparable diffusion constant and dielectric behavior as the unmodified composition. Further, the comparison of the obtained ferroelectric hysteresis and strain-electric field loops revealed that only Dy-phase exhibited interesting properties comparing parent composition. In addition, the incorporation of lanthanides Ln3+ into the BNT-BT matrix led to the development of luminescence characteristics in the visible and near infrared regions, depending on the excitation wavelengths. The simultaneous occurrence of photoluminescence and ferroelectric/piezoelectric properties opens up possibilities for BNT-BT-Ln to exhibit multifunctionality in a wide range of applications.
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Affiliation(s)
- Jacem Zidani
- Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific, Pole, 33 rue Saint-Leu, 80039 Amiens, France; (J.Z.); (I.H.A.); (M.E.M.)
- Laboratory of Interfaces and Advanced Materials (LIMA), Faculty of Sciences of Monastir, University of Monastir, Bd. of the Environment, Monastir 5019, Tunisia; (M.Z.); (M.M.)
| | - Ilham Hamdi Alaoui
- Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific, Pole, 33 rue Saint-Leu, 80039 Amiens, France; (J.Z.); (I.H.A.); (M.E.M.)
| | - Moneim Zannen
- Laboratory of Interfaces and Advanced Materials (LIMA), Faculty of Sciences of Monastir, University of Monastir, Bd. of the Environment, Monastir 5019, Tunisia; (M.Z.); (M.M.)
| | - Eriks Birks
- Institute of Solid-State Physics, University of Latvia, LV-1586 Riga, Latvia;
| | - Zakaria Chchiyai
- Laboratory of Inorganic Materials for Sustainable Energy Technologies (LIMSET), Mohammed VI Polytechnic University (UM6P), Benguerir 43150, Morocco;
| | - Mustapha Majdoub
- Laboratory of Interfaces and Advanced Materials (LIMA), Faculty of Sciences of Monastir, University of Monastir, Bd. of the Environment, Monastir 5019, Tunisia; (M.Z.); (M.M.)
| | - Bouchaib Manoun
- FST, Rayonnement-Matière et Instrumentation, S3M, Hassan First University of Settat, Settat 26000, Morocco;
- Materials Science, Energy, and Nano-Engineering Department, University Mohammed VI Polytechnic, Ben Guerir 43150, Morocco
| | - Mimoun El Marssi
- Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific, Pole, 33 rue Saint-Leu, 80039 Amiens, France; (J.Z.); (I.H.A.); (M.E.M.)
| | - Abdelilah Lahmar
- Laboratory of Physics of Condensed Matter (LPMC), University of Picardie Jules Verne, Scientific, Pole, 33 rue Saint-Leu, 80039 Amiens, France; (J.Z.); (I.H.A.); (M.E.M.)
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35
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Thammakan S, Yoshinari N, Tsuchikawa M, Rujiwatra A, Konno T. Postsynthetic Installation of Lanthanide Cubane Clusters in a 3D Hydrogen-Bonded Framework of Ir III4Zn II4 Multicarboxylates. Inorg Chem 2024; 63:6239-6247. [PMID: 38520341 DOI: 10.1021/acs.inorgchem.3c04513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2024]
Abstract
Immersing single crystals of (Δ)4-K6[Ir4Zn4O(l-cysteinate)12]·nH2O (K6[1Ir]·nH2O) bearing 12 free carboxylate groups, which was newly prepared from Δ-H3[Ir(l-cysteinate)3], ZnBr2, ZnO, and KOH, in an aqueous solution of lanthanide(III) acetate produced Ln2[1Ir]·nH2O (2Ln; Ln = LaIII, CeIII, PrIII, and NdIII) and Ln0.33[Ln4(OH)4(OAc)3(H2O)7][1Ir]·nH2O (3Ln; Ln = SmIII, EuIII, GdIII, TbIII, DyIII, ErIII, HoIII, TmIII, YbIII, and LuIII) in a single-crystal-to-single-crystal transformation manner. X-ray crystallography showed that the KI ions in K6[1Ir]·nH2O are completely exchanged by the LnIII ions in 2Ln and 3Ln, retaining the 3D hydrogen-bonded framework that consists of the IrIII4ZnII4 complex anions of [1Ir]6-. While 2Ln contained the LnIII ions as isolated aqua species, the LnIII ions in 3Ln existed as cationic cubane clusters of [Ln4(OH)4(OAc)3(H2O)7]5+; these were linked by [1Ir]6- anions through carboxylate groups in a 3D polymeric structure. 3Ln showed magnetic and photoluminescence properties that are characteristically observed for discrete LnIII species in the solid state.
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Affiliation(s)
- Supaphorn Thammakan
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Nobuto Yoshinari
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Marie Tsuchikawa
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Apinpus Rujiwatra
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Materials Science Research Center, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Chiang Mai 50200, Thailand
| | - Takumi Konno
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Department of Chemistry, College of Science, National Taiwan Normal University, Taipei 11677, Taiwan
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36
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Teplonogova MA, Kozlova AA, Yapryntsev AD, Baranchikov AE, Ivanov VK. Synthesis and Thermal Decomposition of High-Entropy Layered Rare Earth Hydroxychlorides. Molecules 2024; 29:1634. [PMID: 38611913 PMCID: PMC11013826 DOI: 10.3390/molecules29071634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
The synthesis of multicomponent and high-entropy compounds has become a rapidly developing field in advanced inorganic chemistry, making it possible to combine the properties of multiple elements in a single phase. This paper reports on the synthesis of a series of novel high-entropy layered rare earth hydroxychlorides, namely, (Sm,Eu,Gd,Y,Er)2(OH)5Cl, (Eu,Gd,Tb,Y,Er)2(OH)5Cl, (Eu,Gd,Dy,Y,Er)2(OH)5Cl, and (Eu,Gd,Y,Er,Yb)2(OH)5Cl, using a homogeneous hydrolysis technique under hydrothermal conditions. Elemental mapping proved the even distribution of rare earth elements, while luminescence spectroscopy confirmed efficient energy transfer between europium and other rare earth cations, thus providing additional evidence of the homogeneous distribution of rare earth elements within the crystal lattice. The average rare earth cation radii correlated linearly with the unit cell parameters (0.868 < R2 < 0.982) of the high-entropy layered rare earth hydroxychlorides. The thermal stability of the high-entropy layered rare earth hydroxychlorides was similar to that of individual hydroxychlorides and their binary solid solutions.
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Affiliation(s)
- Maria A. Teplonogova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anfisa A. Kozlova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexey D. Yapryntsev
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander E. Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Vladimir K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia
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37
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Karpiuk TE, Mahato S, Storr T, Leznoff DB. Unusually short unsupported Au(III)⋯Au(III) aurophilic contacts in emissive lanthanide tetracyanoaurate(III) complexes. Chem Commun (Camb) 2024; 60:3914-3917. [PMID: 38502135 DOI: 10.1039/d4cc00468j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
A series of [Au(CN)4]- salts with lanthanide 2,2'-bipyridine dioxide cations features Au(III) aurophilic interactions between [Au(CN)4]- groups, with Au⋯Au distances of 3.3603(4) Å and 3.4354(4) Å that are shorter than any previously reported. Computations predict the interactions to be weakly attractive; packing effects appear to also contribute to the close contacts. The materials are emissive: there is no Au(III)-based luminescence, but for Ln = Eu the PLQY of 29% is surprisingly high compared to related analogues.
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Affiliation(s)
- Thomas E Karpiuk
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Samyadeb Mahato
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Tim Storr
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
| | - Daniel B Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada.
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38
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Dos Santos PF, Gaona X, Lassin A, Skerencak-Frech A, Fellhauer D, Altmaier M, Madé B. Thermodynamics of the Eu(III)-Mg-SO 4-H 2O and Eu(III)-Na-SO 4-H 2O systems. Part II: spectroscopy experiments, complexation and Pitzer/SIT models. Dalton Trans 2024; 53:6323-6332. [PMID: 38487924 DOI: 10.1039/d3dt04323a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A time-resolved laser fluorescence spectroscopy (TRLFS) study was carried out to investigate the Eu(III)-SO4 complexation at room temperature over a wide range of Na2SO4 concentrations (0-2 mol kg-1). Spectroscopic observations confirm the step-wise formation of the aqueous complexes Eu(SO4)+, Eu(SO4)2- and Eu(SO4)33- over the investigated Na2SO4 concentrations. Combining TRLFS data obtained in this study and solubility data reported in Part I of this work for the Eu2(SO4)3-Na2SO4-H2O and Eu2(SO4)3-MgSO4-H2O systems, thermodynamic and activity models were derived based on the SIT and Pitzer formalisms. A combination of the geochemical calculation codes PhreeqC (SIT), PhreeSCALE (Pitzer) and the parameter estimation code PEST was used to determine the solubility products of Eu2(SO4)3·8H2O(cr) and Na2Eu2(SO4)4·2H2O(cr), stability constants of the Eu(III)-SO4 complexes (β0i), and the specific binary and ternary interaction parameters (εij, β(0)ij, β(1)ij, Cϕij, θik, Ψijk) for both activity models. The thermodynamic constants determined in this work are discussed with reference to values available in the literature.
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Affiliation(s)
- P F Dos Santos
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - X Gaona
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - A Lassin
- Water, Environment, Process Development and Analysis Division, BRGM, Orléans, France
| | - A Skerencak-Frech
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - D Fellhauer
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - M Altmaier
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - B Madé
- Research and Development Division, ANDRA, Châtenay-Malabry, France
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39
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Dos Santos PF, Lassin A, Gaona X, Garbev K, Altmaier M, Madé B. Thermodynamics of the Eu(III)-Mg-SO 4-H 2O and Eu(III)-Na-SO 4-H 2O systems. Part I: solubility experiments and the full dissociation Pitzer model. Dalton Trans 2024; 53:6289-6299. [PMID: 38482899 DOI: 10.1039/d3dt04322c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The solubility of Eu(III) was investigated under undersaturated conditions in acidic, dilute to concentrated MgSO4 and Na2SO4 solutions at T = (22 ± 2) °C. After attaining equilibrium conditions, solid phases were characterized by a multi-method approach, including X-ray diffraction (XRD), Raman and infrared (IR) spectroscopy, quantitative chemical analysis (ICP-OES) and thermogravimetric analysis (TG-DTA). A total of 45 solubility samples were investigated for the systems Eu2(SO4)3-MgSO4-H2O (19 samples) and Eu2(SO4)3-Na2SO4-H2O (26 samples). Eu2(SO4)3·8H2O(cr) was found to control the solubility of Eu(III) in all investigated MgSO4 solutions, as well as in dilute Na2SO4 systems. The transformation of Eu2(SO4)3·8H2O(cr) into the double salt Na2Eu2(SO4)4·2H2O(cr) was observed at mNa2SO4 > 0.01 mol kg-1. The latter phase is characterized by significantly lower solubility. Based on these experimental solubility measurements, thermodynamic and activity models were proposed based on the Pitzer equations considering the full dissociation of the Eu(III) species in MgSO4 and Na2SO4 aqueous solutions, i.e. deliberately excluding Eu(III)-sulfate complex formation. A combination of the geochemical calculation code PhreeSCALE and the parameter estimation code PEST was used to determine the values of solubility products and binary and ternary specific interaction parameters (β(0)ij, β(1)ij, Cϕij, θik, Ψijk).
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Affiliation(s)
- P F Dos Santos
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - A Lassin
- Water, Environment, Process Development and Analysis Division, BRGM, Orléans, France.
| | - X Gaona
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - K Garbev
- Institute for Technical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - M Altmaier
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Karlsruhe, Germany.
| | - B Madé
- Research and Development Division, ANDRA, Châtenay-Malabry, France
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40
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Fujishiro F, Yamamoto S, Yahata T, Oishi M. Variable Photoluminescence Intensity Ratio with the Excitation Wavelength in Eu 3+-Doped Perovskite-Type Alkaline Earth Zirconates─Possibility of a Unique Visualization of Ultraviolet Light. Inorg Chem 2024; 63:5865-5871. [PMID: 38502523 DOI: 10.1021/acs.inorgchem.3c04327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Photoluminescence (PL) spectra arising from 4f-4f dipole transitions of Eu3+ doped at both the A and B sites of perovskite-type alkaline earth zirconates obtained at various excitation wavelengths were evaluated. Changes in the excitation wavelength caused obvious differences in the PL intensity ratio of the induced electric dipole (ED) 5D0 → 7F2 transition to the magnetic dipole (MD) 5D0 → 7F1 transition for Eu3+-doped SrZrO3 and CaZrO3, in which only the B site had a center of symmetry. Two charge transfer (CT) bands associated with the excitation of Eu3+ were observed in the spectra of these oxide samples, which arose from the difference in the electronic structure of the Eu-O coordination at the A and B sites. We conclude that simultaneous Eu3+ substitution at sites with and without a center of symmetry, which have different charge transfer energies, induced the observed novel PL changes with a changing excitation wavelength. Our results may enable the development of a new type of ultraviolet light detector.
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Affiliation(s)
- Fumito Fujishiro
- Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi-shi, Kochi 780-8520, Japan
| | - Suzuka Yamamoto
- Faculty of Science and Technology, Kochi University, 2-5-1 Akebono-cho, Kochi-shi, Kochi 780-8520, Japan
| | - Tomoki Yahata
- Graduate School of Technology, Industrial and Social Science, Tokushima University, 2-1 Minami Josanjima-cho, Tokushima-shi, Tokushima 770-8506, Japan
| | - Masatsugu Oishi
- Graduate School of Technology, Industrial and Social Science, Tokushima University, 2-1 Minami Josanjima-cho, Tokushima-shi, Tokushima 770-8506, Japan
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41
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Borges FH, Guidorzi MV, Labaki HDP, Ferreira RAS, Gonçalves RR. Refined structural studies on the fluorite-related polymorphs of sol-gel undoped and Eu 3+-doped yttrium tantalates. Dalton Trans 2024; 53:6020-6030. [PMID: 38470350 DOI: 10.1039/d4dt00338a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Compounds with the general formula RE3MO7 (RE = rare earth ions; M = Ta, Nb, Sb, Ru, Ir, Os, Re, etc.), crystallize as a fluorite-related structure, forming polymorphs with different space groups. The space group strongly depends on the RE3+ and M5+ ionic radii and processing conditions. Structural characterization is well-established for the lanthanide series, but literature studies have divergent views about how to attribute yttrium tantalate (Y3TaO7) space groups-some authors have described the Y3TaO7 structure as orthorhombic and belonging to space group C2221 or Ccmm, whereas others have assigned a cubic Fm3̄m structure to it. Here, we have characterized the structure of undoped and Eu3+-doped Y3TaO7 (0.1 to 50 mol% of Eu3+) samples synthesized by the sol-gel method that crystallized as a cubic disordered fluorite-type structure, space group Fm3̄m. Their powder X-ray diffraction measurements, Rietveld analyzes and Raman spectra were used as a conclusive technique of the structural properties. We have also investigated whether a secondary phase (M'-YTaO4) emerged in the samples and compared the phase composition of each sample to their Raman spectra. Low-temperature photoluminescence measurements (∼15 K) using Eu3+ as a structural probe helped us analyze the inhomogeneous broadening observed in the emission spectra. These measurements can be used as an important tool to attribute the crystalline phases of rare earth tantalates and niobates.
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Affiliation(s)
- Fernanda Hediger Borges
- Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo, SP, Brazil.
| | - Maria Vitória Guidorzi
- Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo, SP, Brazil.
| | - Hayra do Prado Labaki
- Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo, SP, Brazil.
| | - Rute A S Ferreira
- Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Rogéria Rocha Gonçalves
- Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo, SP, Brazil.
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42
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Xing Z, Suo H, Chun F, Wei X, Wang F. Sensitive Luminescence Thermometry through Excitation Intensity Ratio in Eu-Doped BaTiO 3. ACS APPLIED MATERIALS & INTERFACES 2024; 16:13972-13979. [PMID: 38449102 DOI: 10.1021/acsami.3c18301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Optical ratiometric thermometry techniques have gained much attention in recent years due to their reliable and noncontact temperature sensing capability for industrial and biorelated applications. Herein, we exploited the temperature dependence of the absorption band of BaTiO3 (BTO) for novel excitation intensity ratio (EIR) thermometry. Photoluminescence and excitation properties of Eu3+-doped BTO powders were studied as a function of Eu3+ doping concentration. The excitation peak intensities at 397 and 468 nm, corresponding to the 7F0 → 5L6 and 5D2 transitions of Eu3+, were used as EIR parameters. The temperature dependence of the EIR can be explained by the competitive absorption between Eu3+ and the BTO host. The EIR properties were studied in relation to the doping concentration, registering a maximum relative sensitivity (Sr) of 4.89% K-1 in BTO:Eu3+ (0.5%) at 303 K. An amphoteric Eu3+ occupation mode at both Ba2+ and Ti4+ sites was found to interpret the doping concentration dependence of the Sr. The reduced Ba2+ site occupation ratio proved to be responsible for the low Sr values at high Eu3+ doping concentrations. Accordingly, an Eu3+/Ti3+ codoping method was further proposed to improve the Sr by increasing the Ba2+ site occupation ratio. Our result showed that BTO:Eu3+ (0.5%) demonstrated an enhancement of Sr from 4.89 to 6.42% K-1 at 303 K after 2% Ti3+ codoping.
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Affiliation(s)
- Zhifeng Xing
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Hao Suo
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
- National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China
| | - Fengjun Chun
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Xiaohe Wei
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR 999077, China
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43
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Delic A, Lindgren M, Psarrou M, Economopoulos S, Mariussen E, Krivokapic A, Torsæter O, Omran M, Einarsrud MA. Design of Multi-Luminescent Silica-Based Nanoparticles for the Detection of Liquid Organic Compounds. Chemistry 2024; 30:e202303459. [PMID: 38230981 DOI: 10.1002/chem.202303459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/18/2024]
Abstract
Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 nanoparticles (NPs) containing two luminophores, a EuIII:EDTA complex and a newly synthesised fluorophore based on the organic boron-dipyrromethene (BODIPY)-moiety. The particles exhibited stable EuIII PL emission intensity with a long lifetime in aqueous dispersion. The fluorescence of the BODIPY was also preserved in the aqueous environment. The ratiometric PL detection technique was demonstrated by using toluene and 1-octanol as model compounds of crude oil. The optimal synthesis conditions were found to give NPs with a diameter of ~100 nm, which is suitable for transport through porous oil reservoir structures. The cytotoxicity of the NPs was confirmed to be very low for human lung cell and fish cell lines. These findings demonstrate the potential of the NPs to replace the hazardous chemicals used to estimate the residual oil saturation. Moreover, the ratiometric PL detection technique is anticipated to be of benefit in other fields, such as biotechnology, medical diagnostics, and environmental monitoring, where a reliable and safe detection of a liquid organic phase is needed.
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Affiliation(s)
- Asmira Delic
- Department of Materials Science and Engineering, Trondheim, Norway, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 12, NO-7491, Trondheim, Norway
| | - Mikael Lindgren
- Department of Physics, Norwegian University of Science and Technology, Høgskoleringen 5, NO-7491, Trondheim, Norway
| | - Maria Psarrou
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Høgskoleringen 5, NO-7491, Trondheim, Norway
| | - Solon Economopoulos
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), Høgskoleringen 5, NO-7491, Trondheim, Norway
| | - Espen Mariussen
- Norwegian Institute for Air Research, NO-2007, Kjeller, Norway
- Department of air quality and noise, Norwegian Institute of Public Health, NO-0456, Oslo, Norway
| | | | - Ole Torsæter
- Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S. P. Andersens veg 15a, 7031, Trondheim, Norway
| | - Mohamed Omran
- Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S. P. Andersens veg 15a, 7031, Trondheim, Norway
| | - Mari-Ann Einarsrud
- Department of Materials Science and Engineering, Trondheim, Norway, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 12, NO-7491, Trondheim, Norway
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44
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Krutyak N, Spassky DA, Kudryavtseva I, Gallyamov EM, Filatova DG, Mosunov AV, Morozov VA. Influence of Sc substitution on the structure and properties of NASICON-type Na 3Sc 2-xR x(PO 4) 3 (R = Eu, Tb, Dy) phosphors. Dalton Trans 2024; 53:4833-4843. [PMID: 38373010 DOI: 10.1039/d3dt04260j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Na3Sc2-xRx(PO4)3 (R = Eu, Tb, Dy; 0 ≤ x ≤ 0.2) phosphors were synthesized by a high-temperature solid-state reaction. Sc : R ratios for the NSP:xR samples were determined by ICP-MS, EDX-SEM and TEM-EDX measurements. An X-ray diffraction study revealed that solid solutions with a NASICON-type structure were formed at 0 ≤ x ≤ 0.1. The luminescence properties of Na3Sc2(PO4)3 and Na3Sc2-xRx(PO4)3 (R = Eu, Tb, Dy) were studied in the range of 80-500 K. The highest R3+ luminescence intensity in Na3Sc2-xRx(PO4)3 (R = Eu, Tb, Dy) depending on R was found for x = 0.05 in the case of Dy and x = 0.1 in the case of Eu and Tb. The temperature behaviour of the R3+ emission intensity of Na3Sc2-xRx(PO4)3 (R = Eu, Tb, Dy) depends on R that replaces Sc. The decrease of the Eu3+ emission intensity depending on the transition energy by ∼26% and 18% at ∼420 K compared to TR allowed us to consider NSP:0.1Eu3+ as a suitable phosphor for pc-LEDs. The temperature dependence of the Dy3+ emission for NSP:0.05Dy3+ demonstrates a strong thermal quenching. Different temperature dependences of the Tb3+ emission intensity of NSP:0.1Tb3+ were found for two excitation bands at λex = 220 and 378 nm representing f-d and f-f intracentre transitions. No thermal quenching for f-f transitions takes place while the emission intensity for f-d transitions increases with a temperature rise from 80 to 500 K. The dielectric measurements for Na3Sc2(PO4)3 and Na3Sc1.9Eu0.1(PO4)3 were provided on ceramic pellets sintered under vacuum using a spark plasma sintering technique. Different dependences of conductivity were found for two samples. The calculated conductivity for Na3Sc1.9Eu0.1(PO4)3 with an R3̄c structure (σbulk = 6.4 × 10-5 S cm-1 at 300 K, 1.14 × 10-3 S cm-1 at 360 K and 5.0 × 10-2 S cm-1 at 500 K) is higher than that for pure α-Na3Sc2(PO4)3 but lower than that for β- and γ-Na3Sc2(PO4)3.
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Affiliation(s)
- Nataliya Krutyak
- Institute of Physics, University of Tartu, W. Ostwald str. 1, 50411, Tartu, Estonia.
- Physics Department, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Dmitry A Spassky
- Institute of Physics, University of Tartu, W. Ostwald str. 1, 50411, Tartu, Estonia.
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Irina Kudryavtseva
- Institute of Physics, University of Tartu, W. Ostwald str. 1, 50411, Tartu, Estonia.
| | - Eldar M Gallyamov
- Chemistry Department, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Daria G Filatova
- Chemistry Department, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Aleksandr V Mosunov
- Chemistry Department, Lomonosov Moscow State University, 119991, Moscow, Russia
| | - Vladimir A Morozov
- Chemistry Department, Lomonosov Moscow State University, 119991, Moscow, Russia
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45
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Kofod N, Henrichsen MJ, Sørensen TJ. Mapping the distribution of electronic states within the 5D 4 and 7F 6 levels of Tb 3+ complexes with optical spectroscopy. Dalton Trans 2024; 53:4461-4470. [PMID: 38372338 DOI: 10.1039/d3dt03657j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
The Tb(III) ion has the most intense luminescence of the trivalent lanthanide(III) ions. In contrast to Eu(III), where the two levels only include a single state, the high number of electronic states in the ground (7F6) and emitting (5D4) levels makes detailed interpretations of the electronic structure-the crystal field-difficult. Here, luminescence emission and excitation spectra of Tb(III) complexes with 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA, [Tb(DOTA)(H2O)]-), ethylenediaminetetraacetic acid (EDTA, [Tb(EDTA)(H2O)3]-) and diethylenetriaminepentaacetic acid (DTPA, [Tb(DTPA)(H2O)]2-) as well as the Tb(III) aqua ion ([Tb(H2O)9]3+) were recorded at room temperature and in frozen solution. Using these data the electronic structure of the 5D4 multiplets of Tb(III) was mapped by considering the transitions to the singly degenerate 7F0 state. A detailed spectroscopic investigation was performed and it was found that the 5D4 multiplet could accurately be described as a single band for [Tb(H2O)9]3+, [Tb(DOTA)(H2O)]- and [Tb(EDTA)(H2O)3]-. In contrast, for [Tb(DTPA)(H2O)]2- two bands were needed. These results demonstrated the ability of describing the electronic structure of the emitting 5D4 multiplet using emission spectra. This offers an avenue for investigating the relationship between molecular structure and luminescent properties in detailed photophysical studies of Tb(III) ion complexes.
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Affiliation(s)
- Nicolaj Kofod
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
| | - Margrete Juel Henrichsen
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
| | - Thomas Just Sørensen
- Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark.
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46
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da Silva Filho ASN, de Souza JIR, Carolina Roma A, da Silva JAB, Longo RL, Alves S, Belian MF. A combined experimental-molecular modeling study of crown ether europium complexes: Effects of the coordinated anion on structural and luminescence properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123704. [PMID: 38070311 DOI: 10.1016/j.saa.2023.123704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/20/2023] [Accepted: 11/26/2023] [Indexed: 01/13/2024]
Abstract
It is reported the synthesis, characterization by elemental analysis, thermogravimetry; electronic absorption, infrared, excitation, and emission spectroscopies of the [Eu(12C4)(phen)2(X)n]X2 complexes, where 12C4 = 12-crown-4, phen = 1,10-phenanthroline, and X = F-, Cl-, Br-, SCN-, ClO4-, and NO3-. It is verified that the polarizability of the anion X- exerts remarkable effects on the emission process. As a general trend, lower wavenumbers for the 7F0→5L6, 7F0→5D2 and 7F0→5D1 transitions are associated with the anions with higher volumes and, consequently, higher polarizability. The molecular modeling results performed with quantum methods (RHF and DFT) suggest some relationships between the calculated structures, electronic, and luminescence properties with the presence of the LMCT (ligand-to-metal charge transfer) states, which explains the differences in the emission spectra of these complexes due to the coordinated anion.
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Affiliation(s)
| | - Jéssica I R de Souza
- Programa de Pós-Graduação em Ciência de Materiais, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil
| | - Ana Carolina Roma
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, 50670-901, Recife, Pernambuco, Brazil
| | - Juliana A B da Silva
- Programa de Pós-Graduação em Química, Universidade Federal Rural de Pernambuco, Recife, PE 52171-900, Brazil; Núcleo Interdisciplinar de Ciências Exatas e da Natureza, CAA, Universidade Federal de Pernambuco, Nova Caruaru, Caruaru, PE 55.014-900, Brazil
| | - Ricardo L Longo
- Programa de Pós-Graduação em Ciência de Materiais, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Química Fundamental, Universidade Federal de Pernambuco, 50670-901, Recife, Pernambuco, Brazil
| | - S Alves
- Programa de Pós-Graduação em Ciência de Materiais, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Química Fundamental, Universidade Federal de Pernambuco, 50670-901, Recife, Pernambuco, Brazil
| | - Mônica F Belian
- Programa de Pós-Graduação em Química, Universidade Federal Rural de Pernambuco, Recife, PE 52171-900, Brazil; Departamento de Química, Universidade Federal Rural de Pernambuco, 52171-900 Recife, Pernambuco, Brazil.
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47
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Li J, Wang T, Xia S, Chen W, Ren Z, Sun M, Che L, Yang X, Zhou C. Site-Selective Excitation of Ti 3+ Ions in Rutile TiO 2 via Anisotropic Intra-Atomic 3d → 3d Transition. JACS AU 2024; 4:491-501. [PMID: 38425939 PMCID: PMC10900497 DOI: 10.1021/jacsau.3c00600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/06/2023] [Accepted: 01/03/2024] [Indexed: 03/02/2024]
Abstract
Site-selective excitation (SSE), which is usually realized by tuning the wavelength of absorbed light, is an ideal way to study bond-selective chemistry, analyze the crystal structure, investigate protein conformation, etc., eventually leading to active manipulation of desired processes. Herein, SSE has been explored in (110)-, (100)-, and (011)-faced rutile TiO2, a prototypical material in both surface science and photocatalysis fields. Using ultraviolet photoelectron spectroscopy and photon energy-, substrate orientation-, and laser polarization-dependent two-photon photoemission spectroscopy (2PPE), intra-atomic 3d → 3d transition from the split Ti3+ 3d orbitals, i.e., band gap states and excited states at ∼1.00 eV below and ∼2.40 eV above the Fermi level, respectively, has been proven for all of the samples, suggesting that it is a common property of this material. The distinct structure of rutile TiO2 results in the anisotropic 3d → 3d transitions with the transition dipole moment along the long axes ([110] and [11̅0]) of TiO6 blocking units. This anisotropy facilitates the selective excitation of Ti3+ ions in the two types of TiO6, which cannot be realized by conventional wavelength tuning, via polarization alignment of the excitation source. Discovery in this work builds the foundation for future investigation of site-selective photophysical and photochemical processes and eventually possible active manipulation in this material at the atomic level.
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Affiliation(s)
- Jialong Li
- Department
of Physics, School of Science, Dalian Maritime
University, 116026 Dalian, China
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
| | - Tianjun Wang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
| | - Shucai Xia
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
| | - Wei Chen
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
- University
of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, 100049 Beijing, China
| | - Zefeng Ren
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
| | - Min Sun
- Department
of Physics, School of Science, Dalian Maritime
University, 116026 Dalian, China
| | - Li Che
- Department
of Physics, School of Science, Dalian Maritime
University, 116026 Dalian, China
| | - Xueming Yang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
- Department
of Chemistry, Southern University of Science
and Technology, 1088
Xueyuan Road, 518055 Shenzhen, Guangdong, China
| | - Chuanyao Zhou
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023 Dalian, China
- University
of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, 100049 Beijing, China
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48
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Fu H, Jiang Y, Zhang M, Zhong Z, Liang Z, Wang S, Du Y, Yan C. High-entropy rare earth materials: synthesis, application and outlook. Chem Soc Rev 2024; 53:2211-2247. [PMID: 38240305 DOI: 10.1039/d2cs01030e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Recently, high-entropy (HE) materials have attracted increasing interest in various fields due to their unique characteristics. Rare earth (RE) elements have a similar atomic radius and gradually occupied 4f orbitals, endowing them with abundant optical, electric, and magnetic properties. Furthermore, HE-RE materials exhibit good structural and thermal stability and various functional properties, emerging as an important class of HE materials, which are on the verge of rapid development. However, a comprehensive review focusing on the introduction and in-depth understanding of HE-RE materials has not been reported to date. Thus, this review endeavors to provide a comprehensive summary of the development and research status of HE-RE materials, including alloys and ceramics, ranging from their structure, synthesis, and properties to applications. In addition, some distinctive issues of HR-RE materials related to the special electronic structure of RE are also discussed. Finally, we put forward the current challenges and future development directions of HE-RE materials. We hope that this review will provide inspiration for new design ideas and valuable references in this emerging field in the future.
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Affiliation(s)
- Hao Fu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
- College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yong Jiang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Mengzhen Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
- College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ziyun Zhong
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Zhong Liang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Siyuan Wang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Chunhua Yan
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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49
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Sai Manogna K, Deva Prasad Raju B, Rajasekhara Reddy G, Kallem P, Shaik MI, John Sushma N. Investigations on anticancer activity of Eu 3+ doped hydroxyapatite nanocomposites against MCF7 and 4T1 breast cancer cell lines: A structural and luminescence Perspective. Heliyon 2024; 10:e25064. [PMID: 38352738 PMCID: PMC10862524 DOI: 10.1016/j.heliyon.2024.e25064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/31/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Breast cancer remains a significant global health concern, necessitating the development of novel therapeutic approaches. In this study, we investigate the role of Eu3+ doped hydroxyapatite nanocomposites (Han: Eu3+) in the treatment of MCF7 and 4T1 breast cancer cell lines. Furthermore, we explored the structural and luminescent properties of these nanocomposites. Han: Eu3+ were synthesized using a modified co-precipitation method, and their morphology and crystal structure were characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD) in which the average crystalline size of Han: Eu3+ was found to be 25 nm, rendering them suitable for cellular uptake and targeted therapy. To gain insights into the luminescent properties of Han: Eu3+, their excitation and emission spectra were recorded using photoluminescence spectrometer. The characteristic red emission of Eu3+ ions was observed upon excitation, validating the successful doping of Eu3+ into the Han lattice, which was confirmed by the CIE chromaticity coordinate study. These luminescent properties of Han: Eu3+ hold promise for potential applications in bioimaging. To evaluate the efficacy of Han: Eu3+ in breast cancer treatment, MCF7 and 4T1 cell lines were exposed to varying concentrations of the nanocomposites. Cell viability assays revealed a concentration-dependent reduction in cell viability, indicating the potential anticancer activity of Han: Eu3+. The findings of this study contribute to the expanding field of nanomedicine, bringing targeted breast cancer treatments and us closer to more effective.
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Affiliation(s)
- K Sai Manogna
- Department of Biotechnology, Sri Padmavati Mahila Visvavidyalayam, (Women's University) Tirupati-517 502, India
| | - B Deva Prasad Raju
- Department of Physics, Sri Venkateswara University, Tirupati - 517501, India
| | - G Rajasekhara Reddy
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Parashuram Kallem
- Environmental Health and Safety Program, College of Health Sciences, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Mannur Ismail Shaik
- Faculty of Fisheries and Food Science, University Malaysia Terengganu, KulaNerus-21030, Terengganu, Malaysia
| | - N John Sushma
- Department of Biotechnology, Sri Padmavati Mahila Visvavidyalayam, (Women's University) Tirupati-517 502, India
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Yon M, Esmangard L, Enel M, Desmoulin F, Pestourie C, Leygue N, Mingotaud C, Galaup C, Marty JD. Simple hybrid polymeric nanostructures encapsulating macro-cyclic Gd/Eu based complexes: luminescence properties and application as MRI contrast agent. NANOSCALE 2024; 16:3729-3737. [PMID: 38294340 DOI: 10.1039/d3nr06162k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Lanthanide-based macrocycles are successfully incorporated into hybrid polyionic complexes, formed by adding a mixture of zirconium ions to a solution of a double-hydrophilic block copolymer. The resulting nanoobjects with an average radius of approximately 10-15 nm present good colloidal and chemical stability in physiological media even in the presence of competing ions such as phosphate or calcium ions. The final optical and magnetic properties of these objects benefit from both their colloidal nature and the specific properties of the complexes. Hence these new nanocarriers exhibit enhanced T1 MRI contrast, when administered intravenously to mice.
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Affiliation(s)
- Marjorie Yon
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Lucie Esmangard
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Morgane Enel
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Franck Desmoulin
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse - Paul Sabatier, Toulouse, France
- CREFRE-Anexplo, University of Toulouse, Inserm, UT3, ENVT, Toulouse, France
| | - Carine Pestourie
- CREFRE-Anexplo, University of Toulouse, Inserm, UT3, ENVT, Toulouse, France
| | - Nadine Leygue
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Christophe Mingotaud
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Chantal Galaup
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Jean-Daniel Marty
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
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