A5085967446- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Electron Spin Resonance Studies
- Crystallography and molecular interactions
- Nanocluster Synthesis and Applications
- Silicone and Siloxane Chemistry
- Organic and Molecular Conductors Research
- Polyoxometalates: Synthesis and Applications
- Nanoplatforms for cancer theranostics
- Porphyrin and Phthalocyanine Chemistry
- Advanced NMR Techniques and Applications
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Covalent Organic Framework Applications
- Advanced Thermodynamics and Statistical Mechanics
- Organometallic Complex Synthesis and Catalysis
- Enhanced Oil Recovery Techniques
- Luminescence Properties of Advanced Materials
- Inorganic Chemistry and Materials
- Nanoparticle-Based Drug Delivery
- Magnetic properties of thin films
- Advanced Thermoelectric Materials and Devices
Groupe Hospitalier Mutualiste de Grenoble
2013-2025
Institut Charles Gerhardt Montpellier
2014-2024
École Nationale Supérieure de Chimie de Montpellier
2015-2024
Institut Universitaire de France
2021-2024
Université de Montpellier
2015-2024
Centre National de la Recherche Scientifique
2015-2024
Institut de Chimie
2012-2022
Centre Occitanie-Montpellier
2016-2020
Total (France)
2007-2019
Tohoku University
2018
A family of five dinuclear lanthanide complexes has been synthesized with general formula [LnIII2(valdien)2(NO3)2] where (H2valdien = N1,N3-bis(3-methoxysalicylidene)diethylenetriamine) and LnIII EuIII1, GdIII2, TbIII3, DyIII4, HoIII5. The magnetic investigations reveal that 4 exhibits single-molecule magnet (SMM) behavior an anisotropic barrier Ueff 76 K. step-like features in the hysteresis loops observed for antiferromagnetic exchange coupling between two dysprosium ions. Ab initio...
The magnetic dilution method was employed in order to elucidate the origin of slow relaxation magnetization a Dy(2) single-molecule magnet (SMM). doping effect studied using SQUID and micro-SQUID measurements on SMM diluted diamagnetic Y(2) matrix. quantum tunneling that can occur suppressed by applying optimum dc fields. dominant single-ion found be entangled with neighboring Dy(III) ion within molecule, greatly influencing this complex.
Abstract Multifunctional molecular ferroelectrics are exciting materials synthesized using chemistry concepts, which may combine a spontaneous electrical polarization, switched upon applying an electric field, with another physical property. A high‐temperature ferroelectric material is presented that based on chiral Zn 2+ /Dy 3+ complex exhibiting Dy luminescence, optical activity, and magnetism. We investigate the correlations between polarization crystal structure as well low‐temperature...
Magnetoelectric (ME) materials combine magnetic and electric polarizabilities in the same phase, offering a basis for developing high-density data storage spintronic or low-consumption devices owing to possibility of triggering one property with other. Such applications require strong interaction between constitutive properties, criterion that is rarely met classical inorganic ME at room temperature. We provide evidence coupling paramagnetic ferroelectric lanthanide coordination complex...
A new heterodinuclear [Zn(L)Dy]3+ complex, with L being a compartmental Schiff base ligand, exhibits the characteristic Dy3+ luminescence associated single-ion field induced slow relaxation of magnetisation. This complex may be considered as one rare examples bifunctional luminescent magnet.
In order for molecular magnetic materials to become functional, they must retain their magnetization at reasonable temperatures implying high energy barriers spin reversal. The field of single-molecule magnets (SMMs) has recently experienced an explosion research targeting these anisotropic barriers. Achieving such feats involved increasing the a complex and/or inherent anisotropy. Exerting control over total been possible contrary controlling global Herein, we report experimental and...
We analyzed the size effect on a first-order spin transition governed by elastic interactions. This study was performed in framework of nonextensive thermodynamic core-shell model. When decreasing particle size, differences surface energies between two phases lead to shrinking thermal hysteresis width, lowering temperature, and increase residual fractions at low good agreement with recent experimental observations nanomaterials. On other hand, modification particle-matrix interface may allow...
Abstract Luminescence thermometry allows the remote monitoring of temperature and holds promise to drive next generation future nano or micrometric devices. Materials able sense are usually based on one several lanthanide ions allowing a ratiometric measurement. Optimizing thermometric features is achieved through serendipity approach, but it still appears difficult accurately predict sensing performance. Through combination experiment theoretical calculations, first example an energy‐driven...
The synthesis, structures, magnetic and luminescence (including thermometry) properties of a series three-blade propeller homoleptic lanthanide complexes are reported.
Luminescent thermometry allows the remote detection of temperature and holds great potential in future technological applications which conventional systems could not operate. Complementary approaches to measuring aiming enhance thermal sensitivity would however represent a decisive step forward. For first time, we demonstrate proof-of-concept that luminescence be associated with complementary readout related different property. Namely, propose take advantage dependence both magnetic...
Photo-induced spin transition in a molybdenum–zinc complex has been evidenced: unique Light-Induced Excited Spin State Trapping Effect (LIESST) on 4d metal ion.
The exotic “Asian Lantern” heterometallic cage silsesquioxane [(PhSiO<sub>1.5</sub>)<sub>20</sub>(FeO<sub>1.5</sub>)<sub>6</sub>(NaO<sub>0.5</sub>)<sub>8</sub>(<italic>n</italic>-BuOH)<sub>9.6</sub>(C<sub>7</sub>H<sub>8</sub>)] (<bold>I</bold>) was obtained and characterized by X-ray diffraction, EXAFS, topological analyses DFT calculation.
Abstract Multifunctional molecular ferroelectrics are exciting materials synthesized using chemistry concepts, which may combine a spontaneous electrical polarization, switched upon applying an electric field, with another physical property. A high‐temperature ferroelectric material is presented that based on chiral Zn 2+ /Dy 3+ complex exhibiting Dy luminescence, optical activity, and magnetism. We investigate the correlations between polarization crystal structure as well low‐temperature...
We report a new octahedral luminescent SMM exhibiting massive crystal-field splitting and an anisotropic barrier of 1385 cm<sup>−1</sup>.
Abstract Sensors are increasingly present in the everyday life widespread technological applications, and engineering smart systems able to simultaneously detect different physical quantities represents a scientific challenge. Taking advantage of molecular chemistry realm that offers possibility finely adjust properties, it is demonstrated herein luminescent single‐molecule magnet [Dy(acac) 3 (H 2 O) ]·H O (acac = acetylacetonate) acts as dual synchronous thermometric/magnetic optical sensor...
39 Background: To assess the prognostic value of post-therapy [ 177 Lu]Lu-PSMA (LuPSMA)-SPECT/CT by visual RECIP 1.0 during LuPSMA radioligand therapy and to develop an evidence-based clinical protocol monitor efficacy LuPSMA. Methods: Patients who received between April 2019 November 2023 underwent at least two LuPSMA-SPECT/CT (SPECT) were included. Three independent readers interpreted pairs baseline interim after 2 cycles for Response Evaluation Criteria In PSMA-imaging (RECIP) 1.0. The...
Taking into account the general interest in photoswitchable nanomagnets, we present an original synthetic route to well-defined heterotrimetallic complexes. Our strategy demonstrates feasibility of using a "molybdenum−copper" switchable complex with terminal cyanide ligands as relevant synthons for rational design and synthesis molecular architectures. Starting from pentanuclear compound based on octacyanometalated precursor, [MoIV(CN)4(CNCuII(Me2en)2)4]4+, [NiII(cyclam)]2+ assembling...
The synthesis, the structural characterization and magnetic properties of a heterotrimetallic decanuclear square, [(Mo(CN)8)2(CuLTb)4)]4+, noted MoCuTb, are described. This supramolecular compound, viewed as first example metal-capped behaves single molecule magnet with anisotropic barrier energy Ueff = 13.40 cm−1 (19.25 K).
We present the first comparative investigation of Nuclear Magnetic Resonance (NMR) relaxivity a series nanosized cyano-bridged coordination networks stabilized in aqueous solution. These Ln(3+)/[Fe(CN)6](3-) (Ln = Gd, Tb, Y) and M(2+)/[Fe(CN)6](3-) (M Ni, Cu, Fe) nanoparticles with sizes ranging from 1.4 to 5.5 nm are by polyethylene glycols (MW 400 or 1000), glycol functionalized amine groups 1500), N-acetyl-D-glucosamine. The evaluation NMR allowed estimation Imaging (MRI) contrast...
A new approach for the synthesis of Prussian blue type nanoparticles containing nanocomposites in form beads or films, as well their corresponding aqueous colloids, was developed by using a water-soluble alginate matrix template and stabilizing agent. This method consists step-by-step building cyanometallate network pores Mn+/alginate ionotropic gels order to obtain large range cyano-bridged coordination polymer Mn+/[M′(CN)m]3−/alginate (where Mn+ = Ni2+, Cu2+, Mn2+, Fe2+, Eu3+ M′ Fe3+, Cr3+...