Materials Literature
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Isolated and complex: La2MgNi2H8 contains isolated dinuclear [Ni2H7]7− and tetranuclear [Ni4H12]12− anions (see picture). These are the first polynuclear solid-state nickel hydride complexes. Their formation upon hydrogenation of the intermetallic compound La2MgNi2 is associated with a metal–insulator transition.
A novel nanostructure of a side-to-side SnO 2 /ZnO/SnO 2 triaxial nanobelt has been achieved via a simple oxidation of the separated Zn and Sn powders. Each nanobelt has a broad inner ribbon of ZnO with two symmetric SnO 2 sides, and all of the belts are single crystal. This composite structure demonstrates the possib…
Calcium carbonate was crystallized on an eggshell membrane using a specially designed crystallizer. The crystallizer used was a jacketed cylindrical glass vessel with two compartments divided by an eggshell membrane. The calcium chloride and sodium carbonate solutions were separately placed in the two compartments. Se…
A new luminescent microporous terbium silicate Na3TbSi3O9·3H2O (TbSiO-CJ1) has been synthesized under mild hydrothermal conditions; its structure consists of helical sechser silicate chains, which are connected by TbO6 octahedra to form an open framework containing 9-ring channels along the [100] direction.
The phase transition between the ferroelectric and relaxor states for $0.8\mathrm{Pb}({\mathrm{Mg}}_{1∕3}{\mathrm{Nb}}_{2∕3}){\mathrm{O}}_{3}\text{\ensuremath{-}}0.2\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ ceramics with high chemical homogeneity has been studied by measurements of the dielectric and elastic properties…
Verdrillte Röhren: Die Selbstorganisation kleiner organischer Moleküle ist ein neuer Syntheseansatz für Nanoröhren mit helicaler Chiralität. Aminosäurederivate von Naphthalindiimid bilden in Lösung wie im festen Zustand solche Assoziate. Die Chiralität der Nanoröhren wird durch die Aminosäure festgelegt, hängt aber ni…
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.
A type of magnetic metamaterial which exhibits strong magnetic activity within and below the optical region is presented. The metamaterial consists of semiconductor nanoparticles such as $\mathrm{CuCl}$ or ${\mathrm{Cu}}_{2}\mathrm{O}$ particles. The magnetic activity is attributed to the strong oscillator strength st…
We have modulated the anisotropic magnetoresistance (AMR) in $3--4\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ manganite films using the ferroelectric field effect---a method that electrostatically varies the carrier density without affecting the lattice distortion. While significant changes have been induced in ${T}_{C}$…
We present a theoretical analysis of the current-voltage characteristics of a ballistic superconductor-normal-superconductor (SNS) junction, in which a strip of graphene is coupled to two superconducting electrodes. We focus in the short-junction regime, where the length of the strip is much smaller than superconducti…
Barium titanate (BaTiO 3 ) nanoparticles are synthesized under N 2 atmosphere by the hydrolysis and condensation of barium hydroxide octahydrate and titanium (IV) isopropoxide with controlled water addition. With increasing the amount of water addition, the primary nanoparticles tend to grow from 7.5 to 68.5 nm in ave…
High-quality red-emitting CdSe quantum dots were synthesized by a microwave-assisted heating method in which the particle size was controlled mainly by changing reaction temperatures from 190 to 270 °C. The prepared samples were characterized by XRD, UV−Vis, photoluminescence, and TEM methods. The particle sizes range…
Highly active Rh-based living polymerization catalysts were developed, which enabled the synthesis of poly(phenylacetylene) with high molecular weight and narrow molecular weight distributions (e.g., M n = 195 000, M w / M n = 1.06). For instance, a Rh-based ternary catalyst system composed of [(tfb)RhCl] 2 ( 1 ) (tfb…
Most of the binders used in paints, varnishes, lacquer films, and photolithographic coatings are made up of macromolecules. The final dry coating consists predominately of a polymer, either cross-linked or un-cross-linked. The material may have been polymeric before application or cured to become a polymer after applica…
Abstract The application of surface‐attached, thiol‐ene polymer films for controlling material properties in a gradient fashion across a surface was investigated. Thiol‐ene films were attached to the surface by first depositing a thiol‐terminated self‐assembled monolayer and performing a thiol‐ene photopolymerization…
Nanocomposites of montmorillonite (MMT) with poly(1‐naphthylamine) (PNA) is investigated for the first time by emulsion polymerization using three different oxidants. Polymerization of PNA was confirmed by Fourier transformation infrared (FT‐IR) as well as UV‐visible spectra. The in situ intercalative polymerization o…
Abstract Polystyrene (PS) bilayers were prepared and were adhered at a temperature between the surface and bulk glass‐transition temperatures for a given time. Then, the interfacial adhesion strength ( G L ) was examined with a conventional lap‐shear measurement. G L first increased with increasing adhesion time and t…
Following the recent low temperature synthesis of high quality and single crystal CdSe quantum nanowires, we have used a thermodynamic model to investigate the plausibility of axial-growth and oriented-attachment formation mechanisms. Using surface energies for clean and alkylamine-passivated CdSe surfaces reported el…
An unsymmetrical star-shaped pi-system (1) with an isotruxene core and three fluorene arms has been synthesized, and its photophysical, electrochemical, and thermochemical properties have been investigated and compared with the corresponding symmetrical truxene derivatives 2a-d (Kanibolotsky, A. L.; Berridge, R.; Skab…
Star-shaped porphyrin-cored poly(epsilon-caprolactone) (SPPCL) was synthesized using a tetrahydroxyethyl-terminated porphyrin as a core initiator and stannous octoate as a catalyst in bulk at 120 degrees C. The molecular weight of as-synthesized polymer could be adjusted linearly by controlling the molar ratio of epsi…