1
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He L, Wang H, Zeng Z, Zhong L, Tang Q, Yu J, Tian J, Liu T, Zhu J. Rigid Fe(III) Chelate with Phosphonate Pendants: A Stable and Effective Extracellular MRI Contrast Agent. J Med Chem 2024; 67:8630-8641. [PMID: 38747630 DOI: 10.1021/acs.jmedchem.3c02338] [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: 06/14/2024]
Abstract
A novel Fe(III) complex, Fe-tBPCDTA, was synthesized and explored as a potential contrast agent for MRI. Compared to established agents like Fe-EDTA and Fe-tCDTA, Fe-tBPCDTA exhibited moderate relaxivity (r1 = 1.17 s-1·mmol-1) due to its enhanced second-sphere mechanism. It also displayed improved kinetic inertness, lower cytotoxicity, and enhanced redox stability. In vivo studies demonstrated its function as an extracellular fluid agent, providing tumor contrast comparable to that of Gd-DTPA at a higher dosage. Complete renal clearance occurred within 24 h. These findings suggest Fe-tBPCDTA as a promising candidate for further development as a safe and effective extracellular MRI contrast agent.
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Affiliation(s)
- Ling He
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Haiyu Wang
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Zuhua Zeng
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Pharmacy, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Lei Zhong
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Qingxuan Tang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Junlai Yu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jia Tian
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Tianwei Liu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Jiang Zhu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
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2
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Hamon N, Godec L, Jourdain E, Lucio-Martínez F, Platas-Iglesias C, Beyler M, Charbonnière LJ, Tripier R. Synthesis and Photophysical Properties of Lanthanide Pyridinylphosphonic Tacn and Pyclen Derivatives: From Mononuclear Complexes to Supramolecular Heteronuclear Assemblies. Inorg Chem 2023; 62:18940-18954. [PMID: 37935007 DOI: 10.1021/acs.inorgchem.3c02522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Synthetic methodologies were developed to achieve the preparation of ligands L1 and L2 consisting of tacn- and pyclen-based chelators decorated with pyridinylphosphonic pendant arms combined with ethylpicolinamide or acetate coordinating functions, respectively. Phosphonate functions have been selected for their high affinity toward Ln3+ ions compared to their carboxylated counterparts and for their steric hindrance that favors the formation of less-hydrated complexes. Thanks to regiospecific N-functionalization of the macrocyclic backbones, the two ligands were isolated with good yields and implicated in a comprehensive photophysical study for the complexation of Eu3+, Tb3+, and Yb3+. The coordination behavior of L1 and L2 with these cations has been first investigated by means of a combination of UV-vis absorption spectroscopy, steady-state and time-resolved luminescence spectroscopy, and 1H and 31P NMR titration experiments. Structural characterization in solution was assessed by NMR spectroscopy, corroborated by theoretical calculations. Spectroscopic characterization of the Ln3+ complexes of L1 and L2 was done in water and D2O and showed the effective sensitization of the lanthanide metal-centered emission spectra, each exhibiting typical lanthanide emission bands. The results obtained for the phosphonated ligands were compared with those reported previously for the corresponding carboxylated analogues.
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Affiliation(s)
- Nadège Hamon
- Univ Brest, UMR CNRS 6521 CEMCA, 6 Avenue Victor Le Gorgeu, Brest 29200, France
| | - Léna Godec
- Equipe de Synthèse pour l'analyse, Institut Pluridisciplinaire Hubert Curien, UMR 7178, CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Strasbourg 67087, Cedex 2, France
| | - Elsa Jourdain
- Equipe de Synthèse pour l'analyse, Institut Pluridisciplinaire Hubert Curien, UMR 7178, CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Strasbourg 67087, Cedex 2, France
| | - Fátima Lucio-Martínez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, A Coruña 15008, Spain
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, A Coruña 15008, Spain
| | - Maryline Beyler
- Univ Brest, UMR CNRS 6521 CEMCA, 6 Avenue Victor Le Gorgeu, Brest 29200, France
| | - Loïc J Charbonnière
- Equipe de Synthèse pour l'analyse, Institut Pluridisciplinaire Hubert Curien, UMR 7178, CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Strasbourg 67087, Cedex 2, France
| | - Raphaël Tripier
- Univ Brest, UMR CNRS 6521 CEMCA, 6 Avenue Victor Le Gorgeu, Brest 29200, France
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Markiewicz KH, Marmuse L, Mounsamy M, Billotey C, Destarac M, Mingotaud C, Marty JD. Assembly of Poly(vinylphosphonic acid)-Based Double Hydrophilic Block Copolymers by Gadolinium Ions for the Formation of Highly Stable MRI Contrast Agents. ACS Macro Lett 2022; 11:1319-1324. [PMID: 36343111 DOI: 10.1021/acsmacrolett.2c00489] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mixing double-hydrophilic block copolymers containing a poly(vinylphosphonic acid) block with gadolinium ions in water leads to the spontaneous formation of polymeric nanoparticles. With an average diameter near 20 nm, the nanoparticles are stable after dilution or change of pH and ionic strength. High magnetic relaxivities were measured in vitro, and in vivo magnetic resonance imaging on rats demonstrates the high potential of such polymeric assemblies.
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Affiliation(s)
- Karolina H Markiewicz
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse, Cedex 9, France.,Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245 Bialystok, Poland
| | - Laurence Marmuse
- EMR 3738 Ciblage Thérapeutique en Oncologie, Université de Lyon, Université Jean Monnet, Hospices Civils de Lyon, 42023 Saint-Etienne, Cedex 2, France
| | - Margaux Mounsamy
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Claire Billotey
- EMR 3738 Ciblage Thérapeutique en Oncologie, Université de Lyon, Université Jean Monnet, Hospices Civils de Lyon, 42023 Saint-Etienne, Cedex 2, France
| | - Mathias Destarac
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Christophe Mingotaud
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse, Cedex 9, France
| | - Jean-Daniel Marty
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse, Cedex 9, France
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4
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Sy M, Ndiaye D, da Silva I, Lacerda S, Charbonnière LJ, Tóth É, Nonat AM. 55/52Mn 2+ Complexes with a Bispidine-Phosphonate Ligand: High Kinetic Inertness for Imaging Applications. Inorg Chem 2022; 61:13421-13432. [PMID: 35984220 DOI: 10.1021/acs.inorgchem.2c01681] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bispidine (3,7-diazabicyclo[3.3.1]nonane) provides a rigid and preorganized scaffold that is particularly interesting for the stable and inert complexation of metal ions, especially for their application in medical imaging. In this study, we present the synthesis of two bispidine ligands with N-methanephosphonate (H4L1) and N-methanecarboxylate (H3L2) substituents as well as the physico-chemical properties of the corresponding Mn2+ and Zn2+ complexes. The two complexes [Mn(L1)]2- and [Mn(L2)]- have relatively moderate thermodynamic stability constants according to potentiometric titration data. However, they both display an exceptional kinetic inertness, as assessed by transmetallation experiments in the presence of 50 equiv excess of Zn2+, showing only ∼40 and 20% of dissociation for [Mn(L1)]2- and [Mn(L2)]-, respectively, after 150 days at pH 6 and 37 °C. Proton relaxivities amount to r1 = 4.31 mM-1 s-1 ([Mn(L1)]2-) and 3.64 mM-1 s-1 ([Mn(L2)]-) at 20 MHz, 25 °C, and are remarkable for Mn2+ complexes with one inner-sphere water molecule (q = 1); they are comparable to that of the commercial contrast agent [Gd(DOTA)(H2O)]-. The presence of one inner-sphere water molecule and an associative water exchange mechanism was confirmed by temperature-dependent transverse 17O relaxation rate measurements, which yielded kex298 = 0.12 × 107 and 5.5 × 107 s-1 for the water exchange rate of the phosphonate and the carboxylate complex, respectively. In addition, radiolabeling experiments with 52Mn were also performed with H2(L1)2- showing excellent radiolabeling properties and quantitative complexation at pH 7 in 15 min at room temperature as well as excellent stability of the complex in various biological media over 24 h.
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Affiliation(s)
- Maryame Sy
- Equipe de Synthèse pour l'Analyse, Université de Strasbourg, CNRS, IPHC UMR 7178, F-67 037 Strasbourg, France
| | - Daouda Ndiaye
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, F-45071 Orléans, France
| | - Isidro da Silva
- CEMHTI, CNRS UPR3079, Université d'Orléans, F-45071 Orléans 2, France
| | - Sara Lacerda
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, F-45071 Orléans, France
| | - Loïc J Charbonnière
- Equipe de Synthèse pour l'Analyse, Université de Strasbourg, CNRS, IPHC UMR 7178, F-67 037 Strasbourg, France
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, F-45071 Orléans, France
| | - Aline M Nonat
- Equipe de Synthèse pour l'Analyse, Université de Strasbourg, CNRS, IPHC UMR 7178, F-67 037 Strasbourg, France
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5
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6
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Wang H, Cleary MB, Lewis LC, Bacon JW, Caravan P, Shafaat HS, Gale EM. Enzyme Control Over Ferric Iron Magnetostructural Properties. Angew Chem Int Ed Engl 2022; 61:e202114019. [PMID: 34814231 PMCID: PMC8935392 DOI: 10.1002/anie.202114019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Indexed: 01/19/2023]
Abstract
Fe3+ complexes in aqueous solution can exist as discrete mononuclear species or multinuclear magnetically coupled species. Stimuli-driven change to Fe3+ speciation represents a powerful mechanistic basis for magnetic resonance sensor technology, but ligand design strategies to exert precision control of aqueous Fe3+ magnetostructural properties are entirely underexplored. In pursuit of this objective, we rationally designed a ligand to strongly favor a dinuclear μ-oxo-bridged and antiferromagnetically coupled complex, but which undergoes carboxylesterase mediated transformation to a mononuclear high-spin Fe3+ chelate resulting in substantial T1 -relaxivity increase. The data communicated demonstrate proof of concept for a novel and effective strategy to exert biochemical control over aqueous Fe3+ magnetic, structural, and relaxometric properties.
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Affiliation(s)
- Huan Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
| | - Michael B. Cleary
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
| | - Luke C. Lewis
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, United States
| | - Jeffrey W. Bacon
- Department of Chemistry, Boston University, Boston, Massachusetts, 02215, United States
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States,Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
| | - Hannah S. Shafaat
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, United States
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States,Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital/ Harvard Medical School, 149 Thirteenth Street, Charlestown, Massachusetts 02129, United States
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7
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Wang H, Cleary MB, Lewis LC, Bacon JW, Caravan P, Shafaat HS, Gale EM. Enzyme Control Over Ferric Iron Magnetostructural Properties. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huan Wang
- Athinoula A. Martinos Center for Biomedical Imaging
- Institute for Innovation in Imaging Department of Radiology Massachusetts General Hospital/Harvard Medical School 149 Thirteenth Street Charlestown MA 02129 USA
| | - Michael B. Cleary
- Athinoula A. Martinos Center for Biomedical Imaging
- Institute for Innovation in Imaging Department of Radiology Massachusetts General Hospital/Harvard Medical School 149 Thirteenth Street Charlestown MA 02129 USA
| | - Luke C. Lewis
- Department of Chemistry and Biochemistry The Ohio State University Columbus OH 43210 USA
| | | | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging
- Institute for Innovation in Imaging Department of Radiology Massachusetts General Hospital/Harvard Medical School 149 Thirteenth Street Charlestown MA 02129 USA
| | - Hannah S. Shafaat
- Department of Chemistry and Biochemistry The Ohio State University Columbus OH 43210 USA
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging
- Institute for Innovation in Imaging Department of Radiology Massachusetts General Hospital/Harvard Medical School 149 Thirteenth Street Charlestown MA 02129 USA
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8
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Ye G, Roques J, Solari PL, Den Auwer C, Jeanson A, Brandel J, Charbonnière LJ, Wu W, Simoni É. Structural and Thermodynamics Studies on Polyaminophosphonate Ligands for Uranyl Decorporation. Inorg Chem 2021; 60:2149-2159. [PMID: 33522798 DOI: 10.1021/acs.inorgchem.0c02145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The development of actinide decorporation agents with high complexation affinity, high tissue specificity, and low biological toxicity is of vital importance for the sustained and healthy development of nuclear energy. After accidental actinide intake, sequestration by chelation therapy to reduce acute damage is considered as the most effective method. In this work, a series of bis- and tetra-phosphonated pyridine ligands have been designed, synthesized, and characterized for uranyl (UO22+) decorporation. Owing to the absorption of the ligand and the luminescence of the uranyl ion, UV-vis spectroscopy and time-resolved laser-induced fluorescence spectroscopy (TRLFS) were used to probe in situ complexation and structure variation of the complexes formed by the ligands with uranyl. Density functional theory (DFT) calculations and X-ray absorption fine structure (XAFS) spectroscopy on uranyl-ligand complexes revealed the coordination geometry around the uranyl center at pH 3 and 7.4. High affinity constants (log K ∼17) toward the uranyl ion were determined by displacement titration. A preliminary in vitro chelation study proves that bis-phosphonated pyridine ligands can remove uranium from calmodulin (CaM) at a low dose and in the short term, which supports further uranyl decorporation applications of these ligands.
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Affiliation(s)
- Gaoyang Ye
- IJCLab CNRS-IN2P3, Université Paris-Saclay, 91405 Orsay, France.,Institute of Nuclear and New Energy Technology, Tsinghua University, 100084 Beijing, China
| | - Jérome Roques
- IJCLab CNRS-IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | | | | | | | - Jérémy Brandel
- IPHC, UMR 7178, Université de Strasbourg/CNRS, F-67000 Strasbourg, France
| | | | - Wangsuo Wu
- Radiochemistry Laboratory, Lanzhou University, 730000 Lanzhou, Gansu, China
| | - Éric Simoni
- IJCLab CNRS-IN2P3, Université Paris-Saclay, 91405 Orsay, France
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9
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Gupta A, Caravan P, Price WS, Platas-Iglesias C, Gale EM. Applications for Transition-Metal Chemistry in Contrast-Enhanced Magnetic Resonance Imaging. Inorg Chem 2020; 59:6648-6678. [PMID: 32367714 DOI: 10.1021/acs.inorgchem.0c00510] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Contrast-enhanced magnetic resonance imaging (MRI) is an indispensable tool for diagnostic medicine. However, safety concerns related to gadolinium in commercial MRI contrast agents have emerged in recent years. For patients suffering from severe renal impairment, there is an important unmet medical need to perform contrast-enhanced MRI without gadolinium. There are also concerns over the long-term effects of retained gadolinium within the general patient population. Demand for gadolinium-free MRI contrast agents is driving a new wave of inorganic chemistry innovation as researchers explore paramagnetic transition-metal complexes as potential alternatives. Furthermore, advances in personalized care making use of molecular-level information have motivated inorganic chemists to develop MRI contrast agents that can detect pathologic changes at the molecular level. Recent studies have highlighted how reaction-based modulation of transition-metal paramagnetism offers a highly effective mechanism to achieve MRI contrast enhancement that is specific to biochemical processes. This Viewpoint highlights how recent advances in transition-metal chemistry are leading the way for a new generation of MRI contrast agents.
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Affiliation(s)
- Abhishek Gupta
- Nanoscale Organisation and Dynamics Group, School of Science and Health, Western Sydney University, Penrith, New South Wales 2751, Australia.,Ingham Institute of Applied Medical Research, Liverpool, New South Wales 2170, Australia
| | | | - William S Price
- Nanoscale Organisation and Dynamics Group, School of Science and Health, Western Sydney University, Penrith, New South Wales 2751, Australia.,Ingham Institute of Applied Medical Research, Liverpool, New South Wales 2170, Australia
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña, Galicia 15071, Spain
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10
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Nonat AM, Charbonnière LJ. Upconversion of light with molecular and supramolecular lanthanide complexes. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213192] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Charpentier C, Salaam J, Nonat A, Carniato F, Jeannin O, Brandariz I, Esteban-Gomez D, Platas-Iglesias C, Charbonnière LJ, Botta M. pH-Dependent Hydration Change in a Gd-Based MRI Contrast Agent with a Phosphonated Ligand. Chemistry 2020; 26:5407-5418. [PMID: 31923335 DOI: 10.1002/chem.201904904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/05/2019] [Indexed: 12/12/2022]
Abstract
The heptadentate ligand L was shown to form an extremely stable Gd complex at neutral pH with a pGd value of 18.4 at pH 7.4. The X-ray crystal structures of the complexes formed with Gd and Tb displayed two very different coordination behaviors being, respectively, octa- and nonacoordinated. The relaxometric properties of the Gd complex were studied by field-dependent relaxivity measurements at various temperatures and by 17 O NMR spectroscopy. The pH-dependence of the longitudinal relaxivity profile indicated large changes around neutral pH leading to a very large value of 10.1 mm-1 ⋅s-1 (60 MHz, 298 K) at pH 4.7. The changes were attributed to an increase of the hydration number from one water molecule in basic conditions to two at acidic pH. A similar trend was observed for the luminescence of the Eu complex, confirming the change in hydration state. DOSY experiments were performed on the Lu analogue, pointing to the absence of dimers in solution in the considered pH range. A breathing mode of the complex was postulated, which was further supported by 1 H and 31 P NMR spectroscopy of the Yb complex at varying pH and was finally modeled by DFT calculations.
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Affiliation(s)
- Cyrille Charpentier
- Equipe de Synthèse Pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien, UMR 7178 CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Bâtiment R1N0, 67087, Strasbourg Cedex 02, France
| | - Jérémy Salaam
- Equipe de Synthèse Pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien, UMR 7178 CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Bâtiment R1N0, 67087, Strasbourg Cedex 02, France
| | - Aline Nonat
- Equipe de Synthèse Pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien, UMR 7178 CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Bâtiment R1N0, 67087, Strasbourg Cedex 02, France
| | - Fabio Carniato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, 15121, Alessandria, Italy
| | - Olivier Jeannin
- CNRS, ISCR-UMR6226, Université de Rennes, 35000, Rennes, France
| | - Isabel Brandariz
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008, A Coruña, Spain
| | - David Esteban-Gomez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008, A Coruña, Spain
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, 15008, A Coruña, Spain
| | - Loïc J Charbonnière
- Equipe de Synthèse Pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien, UMR 7178 CNRS/Université de Strasbourg, ECPM, 25 rue Becquerel, Bâtiment R1N0, 67087, Strasbourg Cedex 02, France
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, 15121, Alessandria, Italy
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12
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Charpentier C, Salaam J, Lecointre A, Jeannin O, Nonat A, Charbonnière LJ. Phosphonated Podand Type Ligand for the Complexation of Lanthanide CationsPhosphonated Podand Type Ligand for the Complexation of Lanthanide Cations. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cyrille Charpentier
- Equipe de synthèse pour l'analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) CNRS/Université de Strasbourg, ECPM 25 rue Becquerel 67087 Strasbourg Cedex France
| | - Jérémy Salaam
- Equipe de synthèse pour l'analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) CNRS/Université de Strasbourg, ECPM 25 rue Becquerel 67087 Strasbourg Cedex France
| | - Alexandre Lecointre
- Equipe de synthèse pour l'analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) CNRS/Université de Strasbourg, ECPM 25 rue Becquerel 67087 Strasbourg Cedex France
| | - Olivier Jeannin
- CNRS, ISCR‐UMR6226 Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) Université de Rennes 35000 Rennes France
| | - Aline Nonat
- Equipe de synthèse pour l'analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) CNRS/Université de Strasbourg, ECPM 25 rue Becquerel 67087 Strasbourg Cedex France
| | - Loïc J. Charbonnière
- Equipe de synthèse pour l'analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) CNRS/Université de Strasbourg, ECPM 25 rue Becquerel 67087 Strasbourg Cedex France
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13
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Nonat A, Bahamyirou S, Lecointre A, Przybilla F, Mély Y, Platas-Iglesias C, Camerel F, Jeannin O, Charbonnière LJ. Molecular Upconversion in Water in Heteropolynuclear Supramolecular Tb/Yb Assemblies. J Am Chem Soc 2019; 141:1568-1576. [PMID: 30612432 DOI: 10.1021/jacs.8b10932] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Piling up excited states to reach upconversion (UC) is severely restricted by vibrational quenching mechanisms, especially when one looks at discrete molecular entities in solution. By carefully controlling the supramolecular assembly processes resulting from the strong electrostatic interactions between negatively charged Yb complexes and Tb3+ cations in aqueous solutions, we engineered the formation of heteropolynuclear complexes of [(YbL)2Tb x] compositions ( x = 1 and 2). These edifices display a phenomenon of cooperative photosensitization UC with green emission of the Tb cations upon NIR excitation at 980 nm in the Yb absorption band. The photophysical properties of the complexes were carefully investigated by steady-state and time-resolved luminescence experiments in D2O, allowing one to quantify the impact of the composition and pD of the solution on the emission intensity as well as clarifying the exact cooperative photosensitization upconversion mechanism. Using optimized conditions, the energy transfer UC process could be observed for the first time in nondeuterated water with discrete molecular compounds.
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Affiliation(s)
- Aline Nonat
- Equipe de Synthèse pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) , CNRS/Université de Strasbourg , ECPM, 25 Rue Becquerel , 67087 Strasbourg Cedex, France
| | - Sylvana Bahamyirou
- Equipe de Synthèse pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) , CNRS/Université de Strasbourg , ECPM, 25 Rue Becquerel , 67087 Strasbourg Cedex, France
| | - Alexandre Lecointre
- Equipe de Synthèse pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) , CNRS/Université de Strasbourg , ECPM, 25 Rue Becquerel , 67087 Strasbourg Cedex, France
| | - Frédéric Przybilla
- Laboratoire de Bioimagerie et Pathologies, CNRS UMR 7021, Faculté de Pharmacie CS60024 74, Route du Rhin , 67401 Illkirch-Graffenstaden , France
| | - Yves Mély
- Laboratoire de Bioimagerie et Pathologies, CNRS UMR 7021, Faculté de Pharmacie CS60024 74, Route du Rhin , 67401 Illkirch-Graffenstaden , France
| | - Carlos Platas-Iglesias
- React Group, Departamento de Química, Facultade de Ciencias, and Centro de Investigacións Científicas Avanzadas (CICA) , Universidade da Coruña , 15071 A Coruña , Spain
| | - Franck Camerel
- Université de Rennes , CNRS, ISCR-UMR 6226, F-35000 Rennes , France
| | - Olivier Jeannin
- Université de Rennes , CNRS, ISCR-UMR 6226, F-35000 Rennes , France
| | - Loïc J Charbonnière
- Equipe de Synthèse pour l'Analyse (SynPA), Institut Pluridisciplinaire Hubert Curien (IPHC, UMR 7178) , CNRS/Université de Strasbourg , ECPM, 25 Rue Becquerel , 67087 Strasbourg Cedex, France
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14
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Harvey P, Nonat A, Platas‐Iglesias C, Natrajan LS, Charbonnière LJ. Sensing Uranyl(VI) Ions by Coordination and Energy Transfer to a Luminescent Europium(III) Complex. Angew Chem Int Ed Engl 2018; 57:9921-9924. [PMID: 29898241 PMCID: PMC6099227 DOI: 10.1002/anie.201805316] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Indexed: 01/21/2023]
Abstract
The release of uranyl(VI) is a hazardous environmental issue, with limited ways to monitor accumulation in situ. Here, we present a method for the detection of uranyl(VI) ions through the utilization of a unique fluorescence energy transfer process to europium(III). Our system displays the first example of a "turn-on" europium(III) emission process with a small, water-soluble lanthanide complex triggered by uranyl(VI) ions.
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Affiliation(s)
- Peter Harvey
- The Centre for Radiochemistry ResearchSchool of Chemistry, The University of ManchesterBrunswick StreetManchesterM13 9PLUK
| | - Aline Nonat
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse, IPHC, UMR 7178ECPM25 rue Becquerel67087Strasbourg Cedex 02France
| | - Carlos Platas‐Iglesias
- Centro de Investigaciones Científicas Avanzadas (CICA), and Departamento de QuímicaUniversidade da CoruñaCampus da Zapateira-Rúa da Fraga 1015008 ACoruñaSpain
| | - Louise S. Natrajan
- The Centre for Radiochemistry ResearchSchool of Chemistry, The University of ManchesterBrunswick StreetManchesterM13 9PLUK
| | - Loïc J. Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse, IPHC, UMR 7178ECPM25 rue Becquerel67087Strasbourg Cedex 02France
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15
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Harvey P, Nonat A, Platas-Iglesias C, Natrajan LS, Charbonnière LJ. Sensing Uranyl(VI) Ions by Coordination and Energy Transfer to a Luminescent Europium(III) Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805316] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Peter Harvey
- The Centre for Radiochemistry Research; School of Chemistry, The University of Manchester; Brunswick Street Manchester M13 9PL UK
| | - Aline Nonat
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse, IPHC, UMR 7178; ECPM; 25 rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Carlos Platas-Iglesias
- Centro de Investigaciones Científicas Avanzadas (CICA), and Departamento de Química; Universidade da Coruña; Campus da Zapateira-Rúa da Fraga 10 15008 A Coruña Spain
| | - Louise S. Natrajan
- The Centre for Radiochemistry Research; School of Chemistry, The University of Manchester; Brunswick Street Manchester M13 9PL UK
| | - Loïc J. Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse, IPHC, UMR 7178; ECPM; 25 rue Becquerel 67087 Strasbourg Cedex 02 France
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16
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Salaam J, Tabti L, Bahamyirou S, Lecointre A, Hernandez Alba O, Jeannin O, Camerel F, Cianférani S, Bentouhami E, Nonat AM, Charbonnière LJ. Formation of Mono- and Polynuclear Luminescent Lanthanide Complexes based on the Coordination of Preorganized Phosphonated Pyridines. Inorg Chem 2018; 57:6095-6106. [DOI: 10.1021/acs.inorgchem.8b00666] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jérémy Salaam
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
| | - Lilia Tabti
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
- LCIMN Laboratory, Department of Process Engineering, Faculty of Technology, University Ferhat Abbas, 19000 Sétif, Algeria
| | - Sylvana Bahamyirou
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
| | - Alexandre Lecointre
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
| | - Oscar Hernandez Alba
- LSMBO, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | | | | | - Sarah Cianférani
- LSMBO, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Embarek Bentouhami
- LCIMN Laboratory, Department of Process Engineering, Faculty of Technology, University Ferhat Abbas, 19000 Sétif, Algeria
| | - Aline M. Nonat
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
| | - Loïc J. Charbonnière
- LIMAA, IPHC, UMR 7178, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg Cedex
02, France
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17
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Application of Heteronuclear NMR Spectroscopy to Bioinorganic and Medicinal Chemistry ☆. REFERENCE MODULE IN CHEMISTRY, MOLECULAR SCIENCES AND CHEMICAL ENGINEERING 2018. [PMCID: PMC7157447 DOI: 10.1016/b978-0-12-409547-2.10947-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Blahut J, Hermann P, Tošner Z, Platas-Iglesias C. A combined NMR and DFT study of conformational dynamics in lanthanide complexes of macrocyclic DOTA-like ligands. Phys Chem Chem Phys 2017; 19:26662-26671. [DOI: 10.1039/c7cp05296k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A NMR study of the conformational dynamics of paramagnetic Eu3+ complexes provides parameters for isomer interconversion with unprecedented accuracy, while DFT reveals mechanistic details at the molecular level.
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Affiliation(s)
- Jan Blahut
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- Prague 2
- Czech Republic
| | - Petr Hermann
- Department of Inorganic Chemistry
- Faculty of Science
- Charles University
- Prague 2
- Czech Republic
| | - Zdeněk Tošner
- Faculty of Science
- Charles University
- Prague 2
- Czech Republic
| | - Carlos Platas-Iglesias
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
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19
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Janicki R, Gałęzowska J, Mondry A. Stoichiometry of lanthanide(iii) complexes with tripodal aminophosphonic ligands – a new solution to an old problem. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00191f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The [Eu(NP2py)2]5− complex crystallized as a [C(NH2)3]5[Eu(NP2py)2]·12 compound. However, the formation of the [Ln(NP2py)2]5– species in aqueous solution starts at pH as high as 8.
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Affiliation(s)
- Rafał Janicki
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - Joanna Gałęzowska
- Department of Inorganic Chemistry
- Wrocław Medical University
- 50-556 Wrocław
- Poland
| | - Anna Mondry
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
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20
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Souri N, Tian P, Lecointre A, Lemaire Z, Chafaa S, Strub JM, Cianférani S, Elhabiri M, Platas-Iglesias C, Charbonnière LJ. Step by Step Assembly of Polynuclear Lanthanide Complexes with a Phosphonated Bipyridine Ligand. Inorg Chem 2016; 55:12962-12974. [DOI: 10.1021/acs.inorgchem.6b02414] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nabila Souri
- Laboratoire d’Ingénierie
Moléculaire Appliquée à l’Analyse, Institut
Pluridisciplinaire Hubert Curien (IPHC, UMR 7178), CNRS-Université de Strasbourg,, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex, France
- Laboratoire d’électrochimie des Matériaux Moléculaires
et des Complexes, LEMMC, Faculté de Technologie, Université de Sétif-1, Sétif, Algeria
| | - Pingping Tian
- Laboratoire d’Ingénierie
Moléculaire Appliquée à l’Analyse, Institut
Pluridisciplinaire Hubert Curien (IPHC, UMR 7178), CNRS-Université de Strasbourg,, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex, France
| | - Alexandre Lecointre
- Laboratoire d’Ingénierie
Moléculaire Appliquée à l’Analyse, Institut
Pluridisciplinaire Hubert Curien (IPHC, UMR 7178), CNRS-Université de Strasbourg,, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex, France
| | - Zoé Lemaire
- Laboratoire d’Ingénierie
Moléculaire Appliquée à l’Analyse, Institut
Pluridisciplinaire Hubert Curien (IPHC, UMR 7178), CNRS-Université de Strasbourg,, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex, France
| | - Salah Chafaa
- Laboratoire d’électrochimie des Matériaux Moléculaires
et des Complexes, LEMMC, Faculté de Technologie, Université de Sétif-1, Sétif, Algeria
| | - Jean-Marc Strub
- Laboratoire
de Spectrométrie de Masse Bio-Organique, IPHC, UMR 7178, CNRS-Université de Strasbourg, ECPM, 25, rue Becquerel, 67087 Strasbourg, France
| | - Sarah Cianférani
- Laboratoire
de Spectrométrie de Masse Bio-Organique, IPHC, UMR 7178, CNRS-Université de Strasbourg, ECPM, 25, rue Becquerel, 67087 Strasbourg, France
| | - Mourad Elhabiri
- Laboratoire de Chimie Bioorganique et Médicinale, UMR 7509, CNRS-Université de Strasbourg, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex 02, France
| | - Carlos Platas-Iglesias
- Universidade da Coruña, Centro de Investigacións
Científicas Avanzadas (CICA) and Departamento de Química
Fundamental, Facultade de Ciencias, 15071 A Coruña, Galicia, Spain
| | - Loïc J. Charbonnière
- Laboratoire d’Ingénierie
Moléculaire Appliquée à l’Analyse, Institut
Pluridisciplinaire Hubert Curien (IPHC, UMR 7178), CNRS-Université de Strasbourg,, ECPM, 25, rue Becquerel, 67087 Strasbourg Cedex, France
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21
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Hou X, Tang SF. Speciation of metal phosphonates with the assistance of weak interactions. Dalton Trans 2016; 45:7349-59. [PMID: 27021298 DOI: 10.1039/c6dt00643d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By employing an aromatic methyl substituted V-shaped diphosphonic acid as a ligand, a series of metal diphosphonates, namely [Cu3(HL)2(H2O)2][(H2O)2] (1), [Cu(H2L)(pyz)(H2O)2][(H2O)2] (2), [Cu(H2L)(2,2'-bipy)] (3), [Cu(H2L)(4,4'-bipy)(H2O)2] (4), [Zn(H2L)(2,2'-bipy)] (5) and [Cd(H2L)(2,2'-bipy)(H2O)][(H2O)6] (6), have been synthesized. The structural studies reveal that these compounds exhibit diverse crystal structures. The introduction of the methyl group and pyridine derived auxiliary ligands results in the formation of plenty of C-HO, C-Hπ and ππ interactions, which contribute to the crystallization of metal diphosphonates. It was found that the Zn and Cd containing compounds showed intense intraligand emissions.
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Affiliation(s)
- Xiaomin Hou
- College of Life Science, Qingdao Agriculture University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
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22
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Sy M, Nonat A, Hildebrandt N, Charbonnière LJ. Lanthanide-based luminescence biolabelling. Chem Commun (Camb) 2016; 52:5080-95. [DOI: 10.1039/c6cc00922k] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Multiplexing, time-resolution, FRET…lanthanide-based biolabels reveal exceptional spectroscopic properties for bioanalytical applications.
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Affiliation(s)
- Mohamadou Sy
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse
- IPHC
- UMR 7178 CNRS
- Université de Strasbourg
- ECPM
| | - Aline Nonat
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse
- IPHC
- UMR 7178 CNRS
- Université de Strasbourg
- ECPM
| | - Niko Hildebrandt
- NanoBioPhotonics, Institut d'Electronique Fondamentale
- Université Paris-Saclay
- Université Paris-Sud
- CNRS
- Orsay
| | - Loïc J. Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse
- IPHC
- UMR 7178 CNRS
- Université de Strasbourg
- ECPM
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23
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Molecular Magnetic Resonance Imaging Probes Based on Ln3+ Complexes. ADVANCES IN INORGANIC CHEMISTRY 2016. [DOI: 10.1016/bs.adioch.2015.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Tang SF, Li X. Lanthanide diphosphonates based on a V-shaped ligand: syntheses, structures, experimental and theoretical luminescence properties. CrystEngComm 2015. [DOI: 10.1039/c5ce01366f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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