Materials Literature
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The dielectric response of surface stabilized ferroelectric liquid crystals with chevron layer structure is studied within low and intermediate frequency ranges, characteristic for collective molecular excitations. By analytically solving the dynamic equation for collective molecular fluctuations under a weak alternat…
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 structural and electronic properties (in terms of Mulliken charges, density of states and band structures) of pristine and defective (10,0) AlN nanotubes have been calculated within density functional theory. The results show that, in several defective tubes, a spontaneous spin-polarization arises, due to the pres…
We compare local density approximation (LDA) and generalized gradient approximation (GGA) calculations of $\mathrm{GeTe}$ as a function of applied pressure. The LDA yields a fair result for the zero pressure trigonal angle but good to excellent results for the zero pressure lattice constant, energy gap, and relative p…
A novel dithiolene ligand appended with a 4,5-diazafluorene moiety has been synthesized and used for the preparation of discrete nickel and mercury complexes and a one-dimensional polymer in the presence of sodium cations.
The structural changes in carbon nanotubes under electron emission conditions were investigated in situ in a transmission electron microscope (TEM). The measurements were performed on individually mounted free-standing multi-walled carbon nanotubes (CNTs). It was found that the structure of the carbon nanotubes did no…
This paper reports an atomistic simulation of single-walled carbon nanotubes subjected to harmonic waves, using the molecular structural mechanics method and normal mode superposition. The velocities of longitudinal, transverse, and torsional waves propagating in single walled carbon nanotubes are obtained. The result…
Scanning tunneling microscopy and density functional theory are used to develop a new structural model for surface reconstructions driven by Ti interstitials on ${\mathrm{TiO}}_{2}(110)$. Ti interstitials form the edge- or face-sharing octahedra that serve as building blocks for $(1\ifmmode\times\else\texttimes\fi{}1)…
A photopolarimeter based on two different kinds of diffraction gratings (a two-grating photopolarimeter) has been developed for real-time measurements of the four elements of the Stokes vector. The main elements of the device are a pure polarization grating and an ordinary transmission grating, both recorded by means…
Abstract Summary: Heparin, a potent anticoagulant, has been used for the first time for the synthesis of PPy nanowires serving not only as an anion dopant but also as an effective morphology‐directing agent. The obtained PPy nanowires exhibit long and fine structures with smooth surface and the average diameter of the…
Three broad cathodoluminescence bands centred at ∼2.02 eV (red), ∼2.78 eV (blue), and ∼3.45 eV (ultraviolet) have been observed from silica nanowires synthesized by thermal evaporation at high temperature. The luminescence intensities of both the red and ultraviolet bands decrease upon electron-beam irradiation, while…
Abstract Summary: Significant reinforcement of styrene‐butadiene‐rubber was achieved by the novel modification of starch through the use of a resorcinol‐formaldehyde and a silane surfactant. The mechanical property improvement by the modified starch is comparable with that reinforced by carbon black. SEM micrograph sh…
Horizontally aligned carbon nanotube (CNT) field emitters, which strongly adhere to the substrate and show good field emission properties, were fabricated by electrophoresis deposition and fissure formation techniques. A thin film of CNTs was deposited on a substrate, by electrophoresis, from an aqueous mixture of CNT…
Abstract A novel synthetic approach to biodegradable amphiphilic copolymers based on poly (ϵ‐caprolactone) (PCL) and chitosan was presented, and the prepared copolymers were used to prepare nanoparticles successfully. The PCL‐graft‐chitosan copolymers were synthesized by coupling the hydroxyl end‐groups on preformed P…
We illustrate a systematic search method for determining hydrogen atomic arrangements in the hydrogen storage material, ${\mathrm{Li}}_{2}\mathrm{N}\mathrm{H}$. Our method relies on total-energy density-functional calculations, and yields a minimum-energy crystal structure for ${\mathrm{Li}}_{2}\mathrm{N}\mathrm{H}$ a…
Abstract Summary: It is a big challenge to improve simultaneously both the flame retardancy and the melt‐dripping resistance of polymeric materials such as PET. In this paper, a novel intumescent flame retardant, DPSPB, was synthesized and blended with copolyester PET‐ co ‐DDP/O‐MMT nanocomposites, which were synthesi…
Characteristic cylindrical structures formed by ABC star-shaped terpolymers were investigated by microbeam small-angle X-ray scattering (SAXS) in addition to transmission electron microscopy (TEM). The polymer samples are composed of polyisoprene (I), polystyrene (S), and poly(2-vinylpyridine) (P); their volume ratios…
The use of microwave heating has improved the reaction rate, enhanced the yield of an inorganic cluster complex, and allowed for the high-temperature/high-pressure synthesis of a Mn(III) single-molecule magnet.
Many plant leaves found in nature are known to exhibit a characteristic of superhydrophobicity (‘lotus leaf effect’). The present study proposes a mass-production method of highly hydrophobic surfaces by simply replicating the highly hydrophobic plant leaf surfaces in two steps: the first step of making a nickel mould…
Treatment of [NEt4][(pzTp)Fe(III)(CN)3] (1) with Ni(II)(OTf)2 (OTf = trifluoromethanesulfonate) and 1,5,8,12-tetraazadodecane (L) affords {[(pzTp)Fe(III)(CN)3]2[Ni(II)L]} x 1/2MeOH (2), while 2,2'-bipyridine (bipy) affords {[(pzTp)Fe(III)(CN)3]2[Ni(II)(bipy)2]} x 2 H2O (3). Magnetic measurements indicate that 2 and 3…