We present the design and development of hybrid organic – inorganic materials with improved electrochemical performance to be used in energy storage applications (e.g. supercapacitors). The systematic study carried out shows various carbon–based materials (e.g. activated carbons, graphene based materials) working as active substrates where the anchoring of inorganic species takes place (i.e. po...

Polyoxometalates (POMs) covalently functionalized with methyl methacrylate groups were applied as surfactants in the emulsion polymerization reaction of styrene. Due to the copolymerization of the methyl methacrylate groups and the styrene monomers, the polyoxometalate clusters are covalently grafted onto the surface of polystyrene latex nanoparticles. Such latex particles are fully covered wit...

A crown-shaped organic-inorganic hybrid polyoxomolybdate, Na5[H7{N(CH2PO3)3}Mo6O16(OH) (H2O)4]4·18H2O (1) has been presented and characterized. Such an intriguing structure consists of a 24-molybdenum-membered polyanion constructed by organotriphosphonate ligands, which represents the highest nuclearity of metal atoms in the area of organophosphonate-based polyoxometalates.

conclusions estelite sigma quick composite had wear resistance similar to that of nano- and microfilled composites. estelite flowable composites demonstrated similar wear resistance to that of a posterior composite. results the wear amounts of the composites are as follows in order: estelite sigma quick (1886.9 ± 518.5 μm2), estelite flow quick (2708.9 ± 578.1 μm2), estelite high flow (3206 ± 2...

Chiral ligand-modified polyoxometalates (POMs) were successfully synthesized by the introduction of BINOL into the dititanium-substituted POM in an organic medium and characterized by X-ray crystallography, spectroscopy, and elemental analyses. These BINOL-modified POMs were stable in the solution state and showed catalytic activity for asymmetric oxidation of thioanisole.

Thin films of polyoxometalates that are sensitized with a Ru(II) metallopolymer generate significant photocurrents in the presence of benzyl alcohol and visible light. Significantly, the photocurrent generated by the tungstate based adduct, α-[P(2)W(18)O(62)](6-), is approximately seven fold larger than that found for the Dawson polyoxomolybdate α-[S(2)Mo(18)O(62)](4-).

New anhydrous alkali lanthanide-free polyoxometalates have been elaborated by thermal decomposition of their parent hydrates, and they exhibit remarkable reversible turn-off-on luminescence properties at room temperature in the presence humidity.

A family of polyoxometalates with the composition [H2V3M17O62](6-) features a Dawson-like architecture containing two tetrahedral {VVO4} templates rather than main group hetero-anions ({PO4} or {SO4} etc.) typically associated with classical heteropolyacids, situated within a mixed-metal {MVI17VIVO54} cage and these clusters were first discovered using mass spectrometry.

Due to their capability of reversibly accepting multi lithium ions, polyoxometalates (POMs) have been widely regarded as promising candidates for electrochemical storage. Nevertheless, the insulating nature POMs hinders fast migration kinetics within bulk these materials. Herein, we propose introduction a local electric field surrounding POM nanoparticles consisting Mn and V where concomitant C...

this article aims to review various modes of fracture toughness of resin composites. also, this study intends to review the papers on the fracture mode, namely “fractography”, under scanning electron microscopy finding fracture initiation site, and the effect of filler content on the fracture toughness of resin composites. it will also review the effect of aging on the fracture toughness of res...