Small and wide-angle X-ray scattering (SWAXS) is a useful technique for probing the size, shape, reactivity, and interactions of dissolved species. It has been used extensively to characterize dissolved biomolecules, polymers, quantum dots, and nanoparticles. Polyoxometalates (POMs) are ideal for solution characterization via X-ray scattering because they are absolutely discrete in size, and th...

Tumor growth depends on angiogenesis, which can furnish the oxygen and nutrients that proliferate tumor cells. Thus, blocking angiogenesis can be an effective strategy to inhibit tumor growth. In this work, three typical nanoparticles based on polyoxometalates (POMs) have been prepared; we investigated their capability as antitumor and anti-angiogenesis agents. We found that Mo POM nanoparticle...

From atomic level to understand the cluster-size-dependant behavior of dye-sensitized photocatalysts is very important and helpful to design new photocatalytic materials. Although the relationship between the photocatalytic behaviors and particles' size/shape has been widely investigated by theoretical scientists, the experimental evidences are much less. In this manuscript, we successfully syn...

Antimicrobial action of nanomaterials is typically assigned to the nanomaterial composition, size and/or shape, whereas influence of complex corona stabilizing the nanoparticle surface is often neglected. We demonstrate sequential surface functionalization of tyrosine-reduced gold nanoparticles (AuNPs(Tyr)) with polyoxometalates (POMs) and lysine to explore controlled chemical functionality-dri...

The ring-opening polymerisation of ?-amino acid N-carboxyanhydrides (NCAs) offers a simple and scalable route to polypeptides with predicted narrow molecular weight distributions. Here we show how polyoxometalates (POMs)—redox-active metal-oxide anions—can serve as inorganic scaffold initiators for such NCA polymerisations. This “On-POM polymerisation” strategy serves an innovative platform des...

The disparate solubility, redox activity, and pH stability of the group V and group VI polyoxometalates (POMs) confer very different functionality on these species, and tailoring cluster properties by varying the ratio of group V to group VI metals poses both an opportunity and a synthetic challenge. A classic series of studies reported over 40 years ago provided some insight into W/Nb POMs, fr...

Chemical pulps are produced by chemical delignification of lignocelluloses such as wood or annual non-woody plants. After pulping (e.g., kraft pulping), the remaining lignin is removed by bleaching to produce a high quality, bright paper. The goal of bleaching is to remove lignin from the pulp without a negative effect on the cellulose; for this reason, delignification should be performed in a ...

A series of three remarkable complexes [PMo12O40]@[Cu6O(TZI)3(H2O)9]4·OH·31H2O (H3TZI = 5-tetrazolylisophthalic acid; denoted as HLJU-1, HLJU = Heilongjiang University), [SiMo12O40]@[Cu6O(TZI)3(H2O)9]4·32H2O (denoted as HLJU-2), and [PW12O40]@[Cu6O(TZI)3(H2O)6]4·OH·31H2O (denoted as HLJU-3) have been isolated by using simple one-step solvothermal reaction of copper chloride, 5-tetrazolylisophth...

The immobilization of polyoxometalates (POMs) near catalytic centers metal–organic frameworks (MOFs) has been reported as an advantageous strategy to boost their photocatalytic activity toward strategic reactions such CO2 reduction (CO2RR) or hydrogen evolution (HER), although the reasons for enhancement are still poorly understood. Unveiling role POM guests in reaction mechanisms is therefore ...

The syntheses and structures of a family five new Ln/3d cluster containing polyoxometalates (POMs) [{(GeW9O34)2LnIII3(CO3)(OH2)3}6{3MII2LnIII3(μ3-OH)6(OH2)6}4]50− {Ln30M8}, where Ln = Gd or Y, M Zn, Mn, Co, are presented. This structural motif giant tetrahedron contains {LnIII3} {MII2LnIII3}-cluster units which well-isolated within the diamagnetic polyoxotungstate system. magnetic properties {G...