0000000000644460

AUTHOR

Haralampos N. Miras

0000-0002-0086-5173

showing 2 related works from this author

A supramolecular heteropolyoxopalladate {Pd15} cluster host encapsulating a {Pd2} dinuclear guest: [Pd(II)2⊂{H7Pd(II)15O10(PO4)10}](9-).

2011

A high-nuclearity polyoxopalladate compound, [Pd(II)(2)⊂{H(7)Pd(II)(15)O(10)(PO(4))(10)}](9-) {Pd(II)(17)}, comprising a {Pd(15)} host occupied by a {Pd(2)} guest and the parent pristine "empty" [H(7)Pd(II)(15)O(10)(P(V)O(4))(10)](13-) {Pd(15)} cluster have both been prepared and characterized by single-crystal X-ray crystallography, (31)P NMR, CSI-MS, and XPS. The encapsulated {Pd(2)} has a short Pd(II)-Pd(II) distance within the {Pd(15)} host. Solution studies indicate that the empty host and filled guest complex are in equilibrium with each other, and UV titrations revealed a binding constant of ca. 10(3) for the guest Pd(II) ions, with a binding stoichiometry of almost 2.

ChemistryStereochemistrySupramolecular chemistryGeneral ChemistryBiochemistryBinding constantCatalysisIonCrystallographyColloid and Surface ChemistryX-ray photoelectron spectroscopyCluster (physics)TitrationStoichiometryJournal of the American Chemical Society
researchProduct

Programmable Surface Architectures Derived from Hybrid Polyoxometalate-Based Clusters

2011

The exploration of the self-organization of a range of the polyoxometalate-based molecular structures reveals a diverse range of surface patterns and morphologies on solid substrates of technological interest, including methylated and hydroxylated silicon surfaces (namely, SiCH3 and SiOH). By exploiting the interplay between the intrinsic molecular properties and the surface chemistry as well as dynamic spatiotemporal phenomena (e.g., dewetting), we show that these systems can yield 0D, 2D, and 3D architectures via solution deposition at the solid surface, including nanodots, discs, lamellas, porous networks, and layer-by-layer assemblies. In general, we observed that layer-by-layer growth …

Materials scienceSiliconSolid surfaceDrop (liquid)chemistry.chemical_elementNanotechnologySurface energySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsHigh surfaceGeneral EnergychemistryChemical physicsPolyoxometalateNanodotDewettingPhysical and Theoretical ChemistryThe Journal of Physical Chemistry C
researchProduct