Materials Literature
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Hydrous crystalline RuO 2 nanoparticles were prepared successfully via hydrothermal synthesis at 180°C for 24 h. The RuO 2 nanoparticles were highly uniform in size and had a mean diameter of 2.6 nm as indicated by high-resolution analysis electron microscopy. A drip coating method was developed to coat these hydrothe…
The dioxomolybdenum(VI) complex [MoO2Cl2{p-tolyl(CH3DAB)}] has been prepared in good yield by reaction of the solvent adduct MoO2Cl2(THF)2 with one equivalent of the bidentate ligand N,N-p-tolyl-2,3-dimethyl-1,4-diazabutadiene. Treatment of the dichloro complex with the Grignard reagent CH3MgCl gives the dimethyl deri…
The corrosion of 70Cu-30Ni alloy induced by sulfate-reducing bacteria (SRB) in seawater was investigated by microscopic and electrochemical methods. Under anaerobic conditions, the SRB attached on the alloy surface formed blotchy biofilms, as observed by confocal laser scanning microscopy. Intergranular corrosion of t…
In this article, nitrogen doped ZnO thin films with various nitrogen concentrations were obtained by thermal processing of zinc oxynitride alloy films prepared by radio frequency reactive magnetron sputtering. X-ray photoelectron spectroscopy study shows that varying the annealing temperature can modulate the concentr…
A mixture of two double hydrophilic block copolymers (DHBCs) was used to control the crystallization and organization of BaSO4 microstructures as a simple model system for the synergistic action of multiple polymers in biomineralization processes. Independently, poly(ethylene oxide)-block-poly(methacrylic acid) (PEO-b…
A novel photoinduced luminescence film has been prepared by immobilizing pyrene on a quartz plate surface via a flexible long spacer. The film shows combined monomer and excimer emission of pyrene both in wet and dry states, and the excimer may be formed mainly by direct excitation of ground-state dimers and/or monome…
Incorporation of bromide anions (1.0 wt%) in supported Pd catalysts (viz. Pd supported on Al2O3, ZrO2, SiO2, H-beta or Ga2O3) leads to a drastic increase in their selectivity for H2O2 formation in the direct oxidation of H2 to H2O2 by O2(at room temperature) in an aqueous acidic (0.03 M H3PO4) reaction medium; the sel…
Adherent macrophages and foreign body giant cells (FBGCs) are known to release degradative molecules that can be detrimental to the long-term biostability of polyurethanes. The modification of polyurethanes using surface modifying endgroups (SMEs) and/or the incorporation of silicone into the polyurethane soft segment…
Over the years, controlled drug delivery as well as site-specific delivery have made considerable advances. One area that contributed significantly to this progress is the rapidly developing field of colloidal drug delivery systems. Nanoparticles, one of the colloidal drug delivery systems, may enable new possibilitie…
Novel disubstituted EDOT monomers were synthesized in good yields from 3,4-dimethoxythiophene and (chiral) glycols by transetherification. The stereochemistry of the monomers affects the electronic properties of the corresponding chiral PEDOT derivatives.
Ordered 2D arrays of ferromagnetic Fe/Co alloy nanoparticle rings with diameters of 2–12 µm were fabricated via plasma etching and subsequent pyrolytic treatment of template directed self-assembled rings of a highly metallized polyferrocenylsilane metallopolymer precursor.
A new approach is developed to synthesize mesoporous fibrous titania from the sintered product of K(2)Ti(2)O(5), which involves a novel hydrolytic reaction for the formation of potassium-rich nanophase and the generation of an amorphous intermediate.
A first generation phosphorus-containing dendrimer with twelve terminal benzyl dithiobenzoate functions was designed and subsequently used as a multifunctional agent to derive hybrid star copolymers consisting of a dendritic core surrounded by twelve polystyrene branches by reversible addition-fragmentation chain tran…
In contrast to octaethylporphyrin, which forms a very labile bis-BF(2) complex, treatment of the hexa- and octapyrrolic expanded porphyrins amethyrin and [32]octaphyrin with BF(3).Et(2) under standard reaction and work-up conditions gives rise to stable, non-labile mono- and bis-BF(2) complexes; these were readily cha…
We investigate the transport limited currents (ILim) observed at electrodes placed ‘face-on’ to a sonic transducer such that a significant convective flux arising from acoustic streaming is observed. Experiments conducted at 25 kHz with turbulent solution flow concerned with the oxidations of iodide or ferrocyanide an…
Aging behavior of an ultrafine grained Al–Cu alloy was studied. Al–2 wt%Cu alloy sheets were solution-treated at 550 °C for 1.8 ks and then severely deformed up to an equivalent strain of 4.8 by the accumulative roll bonding (ARB) process at ambient temperature. The ARB processed material showed the ultrafine lamellar…
We used two-photon excitation fluorescence correlation spectroscopy (FCS) and neutron reflectometry to study in situ the effect of salt concentration on the degree of protein binding to polyelectrolyte brushes. The binding of bovine serum albumin (BSA) to poly(acrylic acid) (PAA) brushes was characterized at neutral p…
The solid state properties of cruciform pentamers are examined in thin film preparation, in the single crystalline state and in nanoparticle formulations; emission behavior was found to vary substantially with the solid state morphology. This type of behaviour is an excellent way to manipulate the emissive properties…
Non-symmetric liquid crystal trimers containing three different mesogenic units and two flexible spacers have been synthesised, and exhibit a new smectic modification, the triply-intercalated alternating smectic C phase.
Electrical energy storage is a central element to any electric-drivetrain technology - whether hybrid-electric, fuel-cell, or all-electric. A particularly cost-sensitive issue with energy storage is the high replacement cost of depleted battery banks. One possibility to ease the power burden on batteries and fuel cell…