Materials Literature
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GdAl 3 (BO 3 ) 4 nanorods doped with rare-earth ions have been obtained via a combustion synthesis. The nanorods have been characterized by x-ray diffraction, micro-Raman spectra, various microscopy techniques and fluorescence measurements. The results show that the nanorods are of straight morphology and smooth surfa…
Single wall carbon nanotubes (SWCNTs) often aggregate into bundles of hundreds of weakly interacting tubes. Their cross-polymerization opens new possibilities for the creation of new super-hard materials. New mechanical and electronic properties are expected from these condensed structures, as well as novel potential…
Ein Schluck frische Luft: Mesoporöses Manganoxid (γ-MnO2) wurde gemeinsam mit Goldnanopartikeln mithilfe einer durch Vakuum-UV unterstützten Laserablationsmethode abgeschieden, was zu sehr starken Metall-Träger-Wechselwirkungen führte. Das Komposit entfernt viele flüchtige organische Verbindungen (sowie NOx und SO2) a…
Molecular dynamics studies based on the Brenner-Tersoff second-generation reactive empirical bond order potential and the Lennard-Jones carbon-carbon potential for intra- and inter-layer interactions have been performed for carbon nanotubes. These potentials reproduce reasonably the carbon-carbon distances and inter-l…
MIICl2 (M = Mn, Fe, Co) as their acetonitrile solvates were isolated, and their structural, spectroscopic, and magnetic properties were studied. MCl2(NCMe)2 (M = Fe, Mn) form 1-D chains of octahedral MII ions with four bridging chlorides and two axial MeCN's. The presence of an axial distortion for MFe causes a signif…
Noncovalent functionalization of carbon nanotubes with meso-tetraphenylporphine (H2TPP) and its metal(II) complexes NiTPP and CoTPP was studied by means of different experimental techniques and theoretical calculations. As follows from the experimental adsorption curves, free H2TPP ligand exhibits the strongest adsorp…
We demonstrate a technique for the patterning of conducting polyaniline nanowires on metallic substrates. Electrochemical synthesis of template-free polyaniline nanowires is initially preceded by the formation of a thin compact 2D layer, which we show spreads horizontally from the edge of a gold electrode across a SiO…
A fascinating nano-object, amphiphilic polymer brushes with a hard core of multiwalled carbon nanotubes (MWNTs) and a relatively soft shell of polystyrene- block -poly ( N -isopropylacrylamide) (PS- b -PNIPAM), was easily constructed by in situ surface reversible addition–fragmentation chain transfer (RAFT) polymeriza…
The effect of thermostat configurations on the mechanical behavior of empty and butane (n-C4H10) filled (10, 10) carbon nanotubes (CNTs) is examined using classical, atomistic, molecular dynamics (MD) simulations. In particular, the influence of different types of thermostats, relative numbers of thermostat atoms, and…
Abstract A series of Prussian blue analogues, Rb x Mn[Fe(CN) 6 ] y · z H 2 O with different stoichiometries have been synthesized. Elemental analyses reveal a quasilinear decrease in x and y when z increases. Some of these samples present a first‐order phase transition between the Mn II –Fe III and Mn III –Fe II elect…
ZnO sheet arrays were vertically aligned onto an aluminium flake after pyrolysis of Zn 5 (OH) 8 Cl 2 H 2 O sheets which were fabricated in aqueous zinc chloride and hexamethylenetetraamine solution. The ZnO sheets, with diameter of 0.5–1 µm and thickness of 30–50 nm, incline to have satisfactory configuration of verti…
Abstract Multiwalled carbon nanotubes (MWCNTs) have been synthesized by the floating catalyst method using toluene as the carbon source and mixtures of ferrocene and ferrocenyl sulfide as the catalyst. Products were characterized by both low‐resolution and high‐resolution (HR) TEM analysis. It was found that the prese…
The substitution of aluminum oxide into rutile (TiO 2 ) has major effects on crystal growth, cation diffusivity, and conductivity and, critical for its widespread application as a white pigment, inhibits photocatalytic activity. High-field, high-resolution 27 Al NMR provides unique constraints on the type and concentr…
SiGe-on-insulator (SGOI) structures were thermally oxidized to form Ge quantum dots (QDs) that are embedded in a SiO 2 matrix, to systematically investigate possible structural factors that affect the properties of Ge QDs, such as size, density and even position. The properties of Ge QDs depend strongly on the layer t…
Synthetic graphite particles 0.2 microns in diameter react with O3 at room temperature with evolution of CO2. Graphite is less reactive with ozone than carbon blacks having different surface area ranging from 120 to 8 m2/g, but graphite reactivity is comparable to that shown by powdered solid C60 and C70 fullerenes. T…
Silk fabrics were treated with chlorosulphonic acid in pyridine for different times. The amount of sulfur bound to silk increased during the first 2 h of reaction and then reached a plateau. The amino acidic pattern of sulfated silk remained essentially unchanged for short reaction times (< or =2 h). Longer reaction t…
Farnesyltransferase (FTase), an interesting zinc metaloenzyme, has been the subject of great attention in anticancer research over the last decade. However, despite the major accomplishments in the field, some very pungent questions on the farnesylation mechanism still persist. In this study, the authors have analyzed…
We use the x-ray extended-range technique (XERT) [C. T. Chantler et al., Phys. Rev. A 64, 062506 (2001)] to measure the mass attenuation coefficients of tin in the x-ray energy range of $29--60\phantom{\rule{0.3em}{0ex}}\mathrm{keV}$ to $0.04--3\phantom{\rule{0.2em}{0ex}}%$ accuracy, and typically in the range $0.1--0…
The presence of a hydroxyl group at the end of poly(3-hydroxyoctanoate) oligomers, noted PHO oligomers, is required to prepare diblock copolymers with improved properties by ring-opening polymerization of cyclic monomer as epsilon-caprolactone. Several chemical methods such as basic hydrolysis, acid-catalyzed reaction…
Fe, Fe 3 C and NdC 2 nanoparticles, encapsulated within carbon cages, were continuously produced during the induction thermal plasma processing of Fe 14 Nd 2 B, in the presence of methane or acetylene. The product morphology was studied by means of SEM. Further structural details were obtained from TEM, HRTEM, Raman s…