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.
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…
Core and core/shell Tb 3+ -doped CePO 4 and LaPO 4 nanoparticles have been prepared in an organic solvent mixture. The particles were characterized by X-ray diffraction (XRD), UV−vis absorption spectra, luminescence spectra, and lifetimes. It is shown that the luminescence spectra of Ce 3+ and Tb 3+ ions at the partic…
The dielectric behaviour of X7R-MLCCs with different active layers under high dc bias field (up to 6.25 MV m −1 ) has been investigated in the whole measurement temperature range from 213 to 453 K. The results show that as the dc bias field increases, the dielectric permittivity in the whole measurement range and the…
A new cyanate ester monomer was prepared from bis(4-cyanatophenyl)dimethylsilane (SiMCy) and fully characterized by analytical and spectroscopic techniques. The monomer was found to have a melting point about 20 °C lower than that of the commercial bis(4-cyanatophenyl)dimethylmethane (BADCy) with similar melt viscosit…
Lipase catalyzed copolymerization of the monomers lactide and glycolide by Pseudomonas cepacia employing a molar ratio of 80L/20G has been studied. The copolymers were characterized by MALDI-ToF-MS, DSC, SEC and NMR. MALDI-ToF-MS has successfully been used not only to determine end groups and chemical composition but…
Thermo-optical properties of composite materials consisting of noble metal nanoparticles spread in a dielectric host matrix are relevant for various fields in fundamental and applied nanosciences. We present a calculation of these properties in the framework of the Maxwell-Garnett effective medium model, exemplified b…
Nanopowdered solid solution Ce1-xY(Nd)(x)O2-delta samples ( 0.1 LT = x LT = 0.25) were made by self-propagating room temperature (SPRT) synthesis. The first-order Raman spectra of Ce1-xY(Nd)(x)O2-delta samples measured at room temperature exhibit three broad features: the main Raman active F-2g mode at about 450 cm(-1…
Two different sets of approaches for the density-functional calculation of the spin-orbit contributions to zero-field splitting (ZFS) parameters of high-spin systems have been implemented within the same quantum chemistry code ReSpect and have been validated and compared for a series of model systems. The first approa…
A general nonaqueous route has been applied for the preparation of lanthanide ordered nanocrystalline hybrid structures. In a simple one-pot reaction process, Ln(III) isopropoxides (Ln = Gd, Sm, Nd) were dissolved in benzyl alcohol and reacted in an autoclave between 250 and 300 °C. This approach leads to crystalline…