Materials Literature
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Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Give and take: A molecular cluster that readily takes up and stores two molecules of H2 also rapidly releases (milliseconds) the stored H2 by a simple redox process. This process represents a new method of hydrogen storage and release from a well-defined molecular material.
Two different methods were applied to fabricate cuprous-oxide (Cu 2 O) nanoparticles (NPs) in silica glasses (SiO 2 ), namely (i) low oxygen-pressure (LOP) oxidation of Cu NPs, which had previously been formed in SiO 2 by implantation of Cu ions and (ii) two-step annealing of Cu NPs in atmospheric-pressure oxygen gas…
Melts of poly(ethylene terephthalate) were solidified by rapid compression to 2 GPa within 20 ms and by a series of comparative processes including natural cooling, slow compressing and rapid cooling, respectively. By combining XRD and differential scanning calorimetry data of the recovered samples, it is made clear t…
Recently, ultra-small diameter single wall nanotubes with diameter of ∼0.4 nm have been produced and many unusual properties were observed, such as superconductivity, leading to a transition temperature T c ∼15 K, much larger than that observed in the bundles of larger diameter tubes. By a comparison between two diffe…
The low temperature EPR spectra of the unique nanometer-scale molecular magnet V(15) are analyzed within the three-spin model preserving trigonal symmetry. The Hamiltonian includes isotropic and antisymmetric (AS) exchange interactions introduced by Dzyaloshinsky (Zh. Eksp. Teor. Fiz. 32, 1547 (1957) [Sov. Phys. JETP…
Pharmacokinetics of the doxorubicin (DOX) conjugates with magnetite nanoparticles of the core/ shell type in mice following i.v. injection in a dose of 12.5 microg Fe/g tissue w/w was studied using electron spin resonance technique (ESR). Conjugation of the DOX with magnetic nanoparticles was shown to considerably dec…
The neutralization of low energy 7Li+ scattered from Au nanoclusters deposited on TiO2(110) was measured with time-of-flight spectroscopy as a function of cluster size, emission angle, and ion energy. The neutralization shows maxima for cluster diameters approximately 3 nm, and again for thick Au films. The data are c…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The coordination chemistry of the tetrakis(thiophosphinato)resorcinarene sulfur-donor ligands [(C6H2CH{CH2CH2Ph})4{OC(O)R}4{OP(=S)Ph2}4] (L), where R = OCH2Ph, 4-C6H4CH3, C6H11, C4H3S, or OCH2CCH, is reported. Both silver(I) and gold(I) form cationic complexes of the type [LM2]2+, in which the ligand acts as a bis(che…
The (1 − x ) La 0.7 Sr 0.3 MnO 3 + x TiO 2 ( x ∼ 0, 0.05, 0.10, 0.15 and 0.20) composites were prepared via a solid-state reaction process. The microstructural, magnetic and transport properties of the composites were investigated. X-ray diffraction reveals that both the compounds maintain their identities, that is, t…
This paper is the fourth in a series exploring the physical consequences of the solidity of highly viscous liquids. It is argued that the two basic characteristics of a flow event (a jump between two energy minima in configuration space) are the local density change and the sum of all particle displacements. Based on…
Hollow spherical particles of calcite with a diameter of 2−10 μm were synthesized on a polyvinyliden difluoride (PVDF) membrane blotted with crude organic matrices prepared from the pearl oyster shell in a supersaturated solution of calcium carbonate. Examination of the produced particles as a function of the reaction…
A short-term (3-day) equilibration experiment was carried out to determine the effects of 3 animal manures (poultry, pig, and cattle) added at a rate of 20 mg/g to an Oxisol on pH and the concentrations of total (AlT) and monomeric (AlMono) Al in solution. The pH of equilibrium solutions from the control, cattle, pig,…
Direct measurement by oxide melt solution calorimetry of energetics of mixing in rare earth and yttrium doped zirconia, hafnia, and ceria systems provides support for spectroscopic and computational studies of the location and clustering of vacancies in these systems. Strongly negative heats of mixing are seen when th…
Nanoparticles are essential building blocks for nanotechnology. In this paper we demonstrate a novel method to create nanoplatelets by thin film cracking. The thickness of the resulting platelets is determined by the film thickness, and their aspect ratio is controlled by the total strain and the elastic mismatch betw…
Two new dendrimer series were prepared and characterized. These dendrimers contain a single bis(cyclopentadienyl)cobalt(III) (cobaltocenium, Cob+) unit covalently attached to the apical (focal) position of Newkome-type dendrons, ranging in size from first to third generation. The dendrimers in the first series (1ECob+…
The phonons and elastic constants of rocksalt AgCl and AgBr under pressure are extensively studied by using the pseudopotential plane-wave method within density functional theory. A pressure-induced soft transverse acoustic (TA) phonon mode is identified for both compounds. Interestingly, each compound shows a differe…
The principal features of the volumetric as well as the viscoelastic response of mechanically stimulated glasses can be summarized as follows: (i) the time-aging time shift factors contract upon increasing the probe stress (i.e., the stress apparently modifies the volume recovery kinetics), (ii) the volume recovery ba…
Magnesium-Nano-/Mesostrukturen mit Kugel-, Schuppen-, Stäbchen- und Seeigel-Form wurden mithilfe einer einfachen und effizienten Dampftransportmethode hergestellt. Sie zeigen hervorragende elektrochemische Eigenschaften in Mg/Luft-Batterien. In der Abbildung sind die Entladungskurven von Mg/Luft-Batterien aus zwei Pro…