Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The paper deals with the study of the thermotropic liquid crystalline properties of a new azomethinic symmetric dimer and some of its structural heterogeneous mixtures with one of its reagents. Their thermotropic behaviour was monitored by polarised light microscopy, differential scanning microscopy and variable tempe…
In this study, electrostatic self-assembly of different polystyrene sulfonates and a set of tetravalent cationic porphyrins is investigated. It is shown that association of linear polystyrene sulfonates of different molar masses yields finite size nanoscale assemblies that are stable in aqueous solution. Aggregates ar…
A realistic treatment of metallic and semimetallic systems in polar environments requires an explicit treatment of charges induced into the metallic surface. In classical electrostatics, a metallic surface is properly described if the electric field perpendicular to the surface vanishes. For nanoscale materials, howev…
We present Density Functional Theory (DFT) investigations in the General Gradient Approximation (GGA) of the structural and electronic properties of the Ag${}_{2}$V${}_{4}$O${}_{11}$ (SVO) compound. We carried out a detailed study of the different structures of SVO proposed in the literature, by comparing the results…
OBJECTIVES: The present study investigated the potential adverse effects of multi-wall carbon nanotubes (MWCNTs) on pregnant dams and embryonic development following maternal exposure in rats. METHODS: MWCNTs were orally administered to pregnant rats from gestational day (GD) 6 through 19 at dose levels of 0, 8, 40, 2…
The potential for reductive elimination of fluorine from dinuclear gold(II) for catalysis has prompted our efforts to synthesize a dinuclear gold(II) fluoride complex. This has been achieved with bis(2,6-dimethylphenyl)formamidinate bridging ligands. In order to obtain this product, it was necessary first to synthesiz…
Abstract Zinc oxide (ZnO) nanoparticles are synthesized using a simple chemical method at room temperature. A variation in molar concentration of the precursor, potassium hydroxide, from 0.25 to 0.01 mol L −1 is accompanied by a decrease in the average size of the nanoparticles. These nanoparticles are used for the pr…
In this review paper, an overview is given of different modelling efforts for plasmas used for the formation and growth of nanostructured materials. This includes both the plasma chemistry, providing information on the precursors for nanostructure formation, as well as the growth processes itself. We limit ourselves t…
Bi 3.15 Nd 0.85 Ti 3 O 12 (BNT) thin films with different oxygen vacancy concentrations were prepared by annealing in air and nitrogen atmospheres. The effects of oxygen vacancy concentration on microstructures and domain switching of BNT thin films were investigated. It is found that the film annealed in air atmosphe…
In this article, we present an investigation of (Ge + SiO2)/SiO2 multilayers deposited by magnetron sputtering and subsequently annealed at different temperatures. The structural properties were investigated by transmission electron microscopy, grazing incidence small angles X-ray scattering, Rutherford backscattering…
Two groups of 4-(4′-substituted phenylazo)-2-phenyl-4″-alkoxy benzoates were prepared and their mesophase formation and stability investigated. Each group (I n a-e and II n a-e) constituted five homologous series differing in their terminal substituent, CH3O, CH3, H, Cl or NO2. Within each series the number of carbons…
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTChiral Amplification Based on Sergeants and Soldiers Effect in Helically Folded Poly(naphthalenecarboxamide)Koichiro Mikami, Hiroaki Daikuhara, Yuko Inagaki, Akihiro Yokoyama*, and Tsutomu Yokozawa*View Author Information Department of…
Five groups of laterally di-substituted three-ring compounds, 4-(3′-fluoro phenylazo)-2-(or 3-) substituted phenyl-4′-alkoxybenzoates, were prepared and investigated for their mesophase formation and stability. Each group of compounds, which have in common a lateral fluorine atom on the first terminal ring, differs fr…
Abstract The functionalization of nanomaterials with dendritic surface moieties was recently demonstrated to be an effective means of displaying biological ligands and potentially modulating the biological properties of these materials. With the aim of extending this surface functionalization approach to biodegradable…
Abstract Aufkonvertierende lumineszierende Materialien sind in der Lage, nah‐infrarotes Licht zu absorbieren und in kürzerwellige Lumineszenz umzuwandeln. Die Effizienz dieses bemerkenswerten Effekts ist stark temperaturabhängig, was die Temperaturmessung mit einer Ortsauflösung im Nanometerbereich ermöglicht. Alle bi…
Plasma-based nanotechnology is a rapidly developing area of research ranging from physics of gaseous and liquid plasmas to material science, surface science and nanofabrication. In our case, nanoscopic plasma processing is performed to grow single-walled carbon nanotubes (SWNTs) with controlled chirality distribution…
A promising method for the synthesis of metal oxide nanowires is based on the application of the extremely non-equilibrium gaseous environment found in oxygen plasma created by some types of discharges. The kinetic temperature of neutral gas is kept close to the room temperature, the electron temperature is a few eV,…
Photocharging has been suggested recently as the explanation for the spread of carrier multiplication yields reported by different groups. If this hypothesis can be plausible in the case of PbSe, it is inconsistent with the reported experimental data relative to CdSe nanocrystals and cannot therefore explain the large…
A series of biodegradable polyurethanes containing free side hydroxyl groups (PUOH) were synthesized successfully in two steps: (1) PLA diol as soft segment, hexamethylene diisocyanate (HDI) as hard segment, and benzalpentaerythritol (BPO) as a chain extender were used to synthesize PUs with protected OH groups; (2) C…
Poly( n -hexyl isocyanate) was synthesized by anionic polymerization using various oxy-initiators, including sodium phenoxide (Na-PO), sodium benzhydroxide (Na-BH), and sodium methoxyphenylethoxide (Na-MPE). We optimized polymerization conditions. To confirm the living natures of the polymerization, we carried out var…