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 terahertz (THz) refractive indices of a liquid crystal 4′-n-pentyl-4cyanobiphenyl (5CB) in both of the nematic and isotropic phases were determined by terahertz (THz) time-domain spectroscopy for the first time, to our knowledge. We find that the extinction coefficient of 5CB is negligibly small in this frequency…
Hybrid sol–gel films were developed for tissue-derived cell growth. Specifically, Buffalo green monkey kidney cells were grown on hydrophobically modified silica sol–gel thin films and on such films in which poly-L-lysine (PLL) was entrapped in order to affect surface positive charge density. Intermediate hydrophobici…
We studied the aging characteristics of the plasma display panel (PDP) containing -coated blue phosphors and the thermal characteristics of coated phosphors. The nanoscale coatings on phosphors were obtained by the sol-gel method for an concentration of 2.0 wt %, pH values from 2 to 4, and a solution temperature of 50…
Proton conductivity measurement and ac impedance analysis of composites were carried out using two different methods to prepare sample powders: mechanical mixing and evaporation to dryness. At temperatures below the superprotonic phase transition temperature of ca. 140°C, the conductivity of the composite prepared by…
The functionalisation of a porphyrin derivative with a chiral functionality results in a selective interaction with chiral micellar aggregates.
Two N-methylphosphonic acid derivatives of a 14-membered tetraazamacrocycle containing pyridine have been synthesized, H(4)L(1) and H(6)L(2). The protonation constants of these compounds and the stability constants of complexes of both ligands with Ni(2+), Cu(2+) and Zn(2+) were determined by potentiometric methods at…
ORGANIZATION AND DETAILS OF SPECTRAL SETS. Alphabetical Organization of Spectra. Contents of Each Set of Spectra. Philosophy of Data Collection Methods. Peak-Fitting (Curve-Fitting) of High Energy Resolution Spectra. Charge Compensation of Insulating Materials. Abbreviations Used. INSTRUMENT AND ANALYSIS DETAILS USED…
Synchrotron radiation (SR) techniques are continuously pushing the frontiers of wavelength range usage, smaller crystal sample size, larger protein molecular weight and complexity, as well as better diffraction resolution. The new research specialism of probing functional states directly in crystals, via time-resolved…
The synthesis and characterization of a new 4 x 4 library of block copolymers based on polystyrene and poly(ethylene oxide) connected by an asymmetrical octahedral bis(terpyridine) ruthenium complex at the block junction are described, while initial studies on the thin film morphology of the components of the library…
Carbon nanotubes are formed in bulk compositions from thermal decomposition of a cobalt-containing organometallic compound in the presence of an excess amount of a multi(ethynyl)aromatic compound. The novel method described here permits the large-scale production of carbon nanotubes in a shaped, solid configuration. 1…
We report on the synthesis of highly uniform, single phase zinc ferrite films prepared through a single step low temperature reaction by the liquid phase deposition (LPD) method. X-ray diffraction, TGA and EDX measurements support the assumption that the as-deposited films are constituted from a mixture of crystallize…
Micrometric ordered mesoporous silica spheres are synthesised by spray-drying alcoholic sols. For this synthetic route, the important effect of siloxane chemistry on both the morphological and the textural properties of spray-dried silica particles is demonstrated. This is achieved by correlating data obtained on the…
The synthesis and characterisation of [Ru(bipy)(2)(L1)](2+) and the homodinuclear complexes [M(bipy)(2)(L1)M(bipy)(2)](4+)(where M = Ru or Os), employing the ditopic ligand, 1,4-phenylene-bis(1-pyridin-2-ylimidazo[1,5-a]pyridine)(L1), are reported. The complexes are identified by elemental analysis, UV/Vis, emission,…
Mechanical and Electrical Properties of Solution-Processed Polyaniline/Multiwalled Carbon Nanotube Composite Films , Ramamurthy, Praveen C., Harrell, William R., Gregory, Richard V., Sadanadan, Bindu, Rao, Apparao M.
Abstract The structures of single crystals of the α -quartz homeotypes boron phosphate and boron arsenate prepared under high-pressure, high-temperature conditions in a belt-type apparatus were determined by X-ray diffraction. Both structures are more distorted with respect to the β -quartz structure type than α -quar…
Abstract Ionic strength and pH influence the adsorption of cations due to the variation of the electric charge in soils rich in iron (Fe) and aluminum (Al) oxides and hydroxides. The objective of this study was to investigate the influence of pH and ionic strength on zinc (Zn) sorption in a highly weathered Brazilian…
A simple sonication route to decorate multi-walled carbon nanotubes (MWCNTs) with crystalline tin nanoparticles is reported. The sonication process results in a uniform decoration of nanoparticles over the entire outer surface of the nanotubes. Acid-treated MWCNTs were exposed to ultrasonic radiation in a solution of…
A novel catalyst of silver nanoparticles over a zeolite film-coated copper grid (SZFC) has been fabricated via an in situ electrolytic method; it exhibited high catalytic activity and selectivity at a relatively low temperature for the partial oxidation of 1,2-propylene glycol to methyl glyoxal.
The formation of an endothelial cell (EC) monolayer is one critical factor in the development of a tissue engineered vascular graft. One potential method of endothelialization is the migration of native ECs from the surrounding blood vessel onto the newly implanted graft. In the present study, in vitro experiments wer…
Heck and Sonogashira cross-coupling reactions have been used for the functionalization of the upper rim of a tetraiodinated calix[4]arene. In this way, oligophenylenevinylene (OPV) and oligophenyleneethynylene (OPE) arrays have been constructed on the calix[4]arene core to produce covalent assemblies of four π-conjuga…