A5008241582- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Inorganic Chemistry and Materials
- Nanocluster Synthesis and Applications
- Organometallic Complex Synthesis and Catalysis
- Polyoxometalates: Synthesis and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Crystal Structures and Properties
- Crystallography and molecular interactions
- Marine and environmental studies
- Food Industry and Aquatic Biology
- Aquatic and Environmental Studies
- Metalloenzymes and iron-sulfur proteins
- Catalytic Cross-Coupling Reactions
- Chemical Synthesis and Characterization
- Chemical and Physical Properties in Aqueous Solutions
- Coal and Coke Industries Research
- Mining and Gasification Technologies
- MXene and MAX Phase Materials
- Soil and Environmental Studies
- Physics of Superconductivity and Magnetism
- nanoparticles nucleation surface interactions
- Thermodynamic properties of mixtures
- Geological Studies and Exploration
- Nanomaterials for catalytic reactions
Siberian Branch of the Russian Academy of Sciences
2016-2024
Nikolaev Institute of Inorganic Chemistry
2014-2024
Université de Versailles Saint-Quentin-en-Yvelines
2018-2022
Centre National de la Recherche Scientifique
2018-2022
Institut Lavoisier de Versailles
2018-2022
Université Paris-Saclay
2018-2022
Federal Research Center of Fundamental and Translational Medicine
2018-2019
Scientific Research Institute of Experimental and Clinical Medicine
2016-2017
In-Q-Tel
2017
Novosibirsk State University
2014-2016
Abstract Herein, we show how the chaotropic effect arising from reduced molybdate ions in acidified aqueous solution is able to amplify drastically weak supramolecular interactions. Time‐resolved Small Angle X‐ray Scattering (SAXS) analysis suggests that molybdenum‐blue oligomeric species form huge aggregates presence of γ‐cyclodextrin (γ‐CD) which results fast formation nanoscopic {Mo 154 }‐based host‐guest species, while diffraction reveals ending‐point scenario an unprecedented...
The chaotropic character of Keggin-type polyoxotungstate anions was evaluated with respect to their ability bind γ-cyclodextrin (γ-CD) by varying the global charge density nanometer-sized polyanion.
Octahedral rhenium cluster complexes have recently emerged as relevant building blocks for the design of singlet oxygen photosensitizing materials toward biological applications such blue-light photodynamic therapy. However, their generation ability well properties been studied only superficially. Herein we investigate in detail photogeneration, dark and photoinduced cytotoxicity, cellular uptake kinetics, localization vitro oxidative stress, cytotoxicity series octahedral [{Re6Q8}(CN)6]4-,...
Abstract Water‐soluble salts of anionic [Re 6 Q 8 (CN) ] 4− (Q=S, Se, Te) chalcogenide octahedral rhenium clusters react with γ‐cyclodextrin (γ‐CD) producing a new type inclusion compounds. Crystal structures determined through single‐crystal X‐ray diffraction analysis revealed supramolecular host–guest assemblies resulting from close encapsulations the cluster within two γ‐CDs. Interestingly, nature inner ligands influences strongly conformation. The S interacts preferentially primary faces...
Nowadays, the development of new effective photocatalytic materials for purification real wastewaters and model systems containing organic molecules constitutes an important challenge. Here we present a preparation strategy composite based on hexamolybdenum cluster complexes exfoliated hexagonal boron nitride (h-BN) nanosheets. Cluster deposition nanosheet surface was achieved by impregnation matrix (Bu4N)2[{Mo6I8}(NO3)6]/acetone solution. Successful immobilization chemical composition...
Abstract Octahedral molybdenum and tungsten clusters have potential biological applications in photodynamic therapy bioimaging. However, poor solubility hydrolysis stability of these compounds hinder their application. The first water‐soluble photoluminescent octahedral cluster [{W 6 I 8 }(DMSO) ](NO 3 ) 4 was synthesised demonstrated to be at least one order magnitude more stable towards than its analogue. Biological studies the compound on larynx carcinoma cells suggest that it has a...
New hexarhenium clusters exhibit radio- and photoluminescence, have low cytotoxicity, are capable of penetrating into cells photodynamic toxicity.
The octahedral cluster compound Na2 H8 [{Re6 Se8 }(P(C2 H4 CONH2 )(C2 COO)2 )6 ] has been shown to be highly radio dense, thus becoming a promising X-ray contrast agent. It was also that this had low cytotoxic effect in vitro, acute toxicity vivo and eliminated rapidly from the body through urinary tract. present contribution describes more detailed cellular internalization assay morphological analysis after intravenous injection of hexarhenium at different doses. median lethal dose (LD50 )...
In aqueous solution, cyclodextrins (CDs) are able to bind strongly either hydrophobic species or also hydrophilic molecules such as octahedral hexametallic cluster. Systematic investigation of the reactivity between native CDs (α- β-CD) and water-soluble rhenium clusters [Re6Q8(CN)6]4– with Q = S, Se, Te were performed, leading six new crystal structures revealing different types supramolecular arrangements. Encapsulation (Q Te) within two β-CDs is observed regardless cluster size....
Substitution of apical halide ligands in [{Re6Sei8}Xa6]3– (X = Cl, Br) by benzimidazole (bimzH) accompanied a self-assembly process leads to the formation microporous Re6-based hydrogen-bonded organic frameworks (Re6-HOFs) constructed on N–H···X hydrogen bonds and π–π-stacking interactions between bimzH ligands. Re6-HOFs demonstrate sorption properties with Brunauer–Emmett–Teller surface area up 443 m2 g–1 luminescence quantum yield an emission lifetime 0.16 16 μs, respectively. The...
We report how only one electron transfer from the hydrophilic reduced cluster [{Re6Se8}(CN)6]4- induces both a dramatic increase of host-guest affinity with γ-cyclodextrin and drastic alteration supramolecular dynamics. This striking behaviour, underlined by its thermochemical fingerprint, indicates that self-assembly process is driven chaotropic effect.
Association between molybdenum clusters and Al(<sc>iii</sc>) polycations is facilitated by γ-cyclodextrin, a natural macrocyclic polysaccharide, to form luminescent supramolecular edifices.
γ-Cyclodextrin (γ-CD) interacts in aqueous solution with octahedral halide clusters Na2[{M6X8}Cl6] (M = Mo, W; X Br, I) to form robust inclusion supramolecular complexes [{M6X8}Cl6@2γ-CD]2-. Single-crystal X-ray diffraction analyses revealed two conformational organizations within the adduct depending on nature of inner {M6X8} core. Using 35Cl NMR and UV-vis as complementary techniques, kinetics hydrolysis process were shown increase following order: {W6I8} < {W6Br8} ≈ {Mo6I8} {Mo6Br8}. The...
Despite that the chemistry of octahedral cluster complexes has been actively developed recently, there are still a lot unexplored areas. For example, to date, only few halide M6-clusters with N-heterocycles known. Here, we obtained an apically heteroleptic iodide molybdenum complex pyridine ligands—trans-[{Mo6I8}(py)2I4] by direct substitution apical ligands [{Mo6I8}I6]2– in solution. The compound co-crystalized monosubstituted form [{Mo6I8}(py)I5]– ratio 1:4, and thus, can be described...
This article evaluates the link between ligands on rhenium clusters and their toxicity.
The association of metallic clusters (CLUS) and polyoxometalates (POM) into hierarchical architectures is achieved using γ-cyclodextrin (γ-CD) as a supramolecular connector. new self-assembled systems, so-called CLUSPOM, are formed from Dawson-type polyoxometalate [P2W18O62]6- electron-rich rhenium clusters. It worth noting that cluster-based cation [{Re6Se8}(H2O)6]2+ on one hand anion the other [{Re6Se8}(CN)6]4- can be associated with anionic POM. In absence connector, "CLUSPOM salt" was...
Among well-studied and actively developing compounds are polyoxometalates (POMs), which show application in many fields. Extending this class of compounds, we introduce a new subclass polyoxometal clusters (POMCs) [Mo12O28(μ-L)8]4- (L = pyrazolate (pz) or triazolate (1,2,3-trz 1,2,4-trz)), structurally similar to POM, but containing binuclear Mo2O4 linked by bridging oxo- organic ligands. The complexes obtained ampoule synthesis from the cluster [Mo2O4(C2O4)2(H2O)2]2- melt an ligand soluble...
Two new cationic octahedral rhenium cluster complexes [{Re6Q8}(4-NH2-py)6]2+ (Q=S, Se; 4-NH2-py = 4-aminopyridine) were synthesized by reactions of cesium salts anions [{Re6Q8}Br6]4−/3− with molten 4-aminopyridine. Both separated as Br− counterions and the structure [{Re6S8}(4-NH2-py)6]Br2·6DMF was revealed X-ray single-crystal diffraction analysis. The compounds characterized elemental analysis, energy dispersive X-ray, IR, NMR, luminescence spectroscopies.