Materials Literature
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Thin films of V 2 O 3 with thickness 4–300 nm were grown on -oriented sapphire substrates by reactive dc magnetron sputtering. X-ray diffraction, pole figure measurements and scanning tunnelling microscopy show high crystallinity and epitaxy to the substrate with a faceted surface structure, and the absence of strain.…
Abstract Poly(2‐fluroaniline) and poly(2‐chloroaniline) were synthesized by an electrochemical method in an acetonitrile solution containing tetrabutylammonium perchlorate and perchloric acid. Also, the electrochemical copolymerization of aniline with 2‐fluroaniline and 2‐chloroaniline was carried out in the same medi…
The role of the trivalent rare-earth ion on the paramagnetic to ferromagnetic transition temperature (Tc) of the substituted perovskite-type rare-earth (R) manganese oxides, RMn0.5Co0.5O3 and RMn0.5Ni0.5O3 (R = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er and Yb), is compared. For a particular R3+ with larger ionic size, the Tc of…
Abstract A removal efficiency of vapor-phase elemental mercury by TiO2 irradiated using various light sources was investigated. The effective surface area of TiO2 for Hg adsorption and UV radiation was increased by packing the adsorption bed with mixture of TiO2 and glass beads. A rotating-type reactor was specially d…
A compound with a non-layered structure composed of Cu 2− x Se nanotubes was prepared in a room temperature redox reaction in ethylene diamine solution. The product was characterized by x-ray diffractometry, transmission electron microscopy, high resolution transmission electron microscopy, and x-ray photoelectron spe…
Abstract Ink‐eliminated sludge flour (IESF), a waste residue from the recycling treatment of waste paper, is a promising new kind of filler for thermoplastic polymers with a good price/performance ratio and advantages for environmental protection. In this study, high‐impact polypropylene (PP) and maleic anhydride graf…
Adaptive composites, which consist of carbon fiber reinforced plastics (CFRP) and shape memory alloy (SMA) wires, have attracted much attention recently in the aerospace industry, etc. In the fabrication of such adaptive composites, CFRP and SMA wires must be cured at specific temperatures, either at 130 or 180 °C dep…
We propose the use of Mössbauer quadrupole effect as a sensitive probe to determine structural feature precisely. This method has been applied, together with the high-resolution neutron powder diffraction measurements, to the structure analysis of the ordered double perovskites Sr <sub>2</sub>FeMoO<sub>6</sub> and Sr<…
Abstract Poly(bisphenol‐A carbonate) (PC) was degraded in solution at various temperatures (26–70°C) by different lipases, Candida Rugosa (CR), Hog Pancreas (HP), Lipolase (LL), and Novozyme (NV), in various solvents. The degradation of PC was monitored using gel permeation chromatography (GPC). The molecular weights…
Abstract Die Synthesen zweier neuer Heteropolyanionen mit Vanadium als Heteroatom werden vorgestellt. Sie wurden vollständig durch Röntgenstrukturanalysen sowie IR‐ und Ramanspektroskopie charakterisiert. Die Verbindung ((CH 3 ) 4 N) 6 Na 4 [(VO(H 2 O) 2 ) 2 (WO 2 ) 2 (BiW 9 O 33 ) 2 ]·18H 2 O (1) kristallisiert im tr…
We measured the static magnetic susceptibility and the electron spin resonance of the Fe(Pc)(CN) 2 complexes, and investigated the molecular magnetism of the unit Fe(Pc)(CN) 2 . The magnetic susceptibility shows a highly anisotropic Curie behavior. Based on the electron spin resonance, we found a highly anisotropic g…
Abstract In this manuscript, a rational synthetic strategy from layer structure to nanotubes has been developed in the synthesis of δ-MnO2 single crystal nanotubes by employing layered α-NaMnO2 as precursors through a controlled hydrothermal intercalation process.
Abstract Poly[2,7-(9-oxo-9-phosphafluorenylene)-alt-co-(1,4-arylene)]s, readily prepared from 2,7-dibromo-9-oxo-9-phosphafluorenes and arylene bisboronates, behaved as extended π-conjugated polymers in the UV–vis absorption spectroscopy and displayed green-blue fluorescence with high quantum yields. Cyclic voltammetry…
Au nanoparticles exhibit excellent compatibility with biomolecules and some distinct optical properties. Their two popular features, the color change upon aggregation and surface plasmon resonance (SPR) enhancement, have been exploited in analytical chemistry, biosensing platforms, and immunoassays. The preparation of…
Abstract Es wurden fünf Chalcogeno‐Hypodiphosphate dargestellt und röntgenographisch mit Einkristallmethoden charakterisiert. Mg 2 P 2 S 6 ( C 2/ m ; a = 6, 085(1), b = 10, 560(2), c = 6, 835(1)Å, β = 106, 97(3)°; Z = 2) kristallisiert im Fe 2 P 2 S 6 ‐Typ, während Mg 2 P 2 Se 6 ( a = 6, 404(1), c = 20, 194(4)Å) und Z…
We find, from first principles calculations, that an oxygen (anion) vacancy in ${\mathrm{WO}}_{3}$ not only generates a donorlike state near the fundamental band gap, derived from the top valence bands, but also gives rise to an additional pair of defect states: a hyper-deep resonant state in the valence band and a hi…
Abstract Schwarze, plättchenförmige Kristalle von M BiSCl 2 ( M = Cu, Ag)werden durch thermische Umsetzung äquimolarer Gemenge von M Cl und BiSCl erhalten. Aus Röntgenbeugungsuntersuchungen an Pulvern und Einkristallen geht hervor, dass die Verbindungen isotyp im Raumgruppentyp Cmcm kristallisieren ( M = Cu/Ag: a = 39…
${\mathrm{UO}}_{2}$ single crystals with a size of around $1{\mathrm{cm}}^{3}$ are created in a process involving a period of spectacular grain growth. (111) cleavage cross sections through these crystals expose voids that are typically of \ensuremath{\mu}m dimensions. Low voltage scanning electron microscopy of the v…
The remarkable properties of carbon nanotubes give promise of a diverse array of revolutionary technologies and applications. Synthesis remains the key to their development. This article will review many of the current methods used for nanotube synthesis and the recent results towards achieving the goal of large-scale…
Abstract We prepared novel pyrene-fused porphyrins via the oxidative intramolecular ring closure reactions of meso-pyrenylporphyrin. The excitation energies and the oxidation potentials of the isolated dark-colored pyrene-fused porphyrins were significantly low compared with those of the corresponding precursors.