Ferromagnetic Cobalt Metallocycles
The tripodal alcohol 1,1,1-tris(hydroxymethyl)ethane (H3thme) directs the formation of heptanuclear cobalt metallocycles in which the metal ions are coupled ferromagnetically.
Materials Literature
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Surfactant-Assisted Synthesis of SnS Nanowires Grown on Tin Foils
Crystalline SnS wires of micro- and nanometer scale have been synthesized over tin metal foils at room temperature using a simple surfactant-assisted approach. Scanning electron microscopy, transmission electron microscopy, UV−Vis−near infrared (NIR) and Fourier transform infrared (FTIR) spectroscopy were used to char…
Facile Method To Prepare Surface-Enhanced-Raman-Scattering-Active Ag Nanostructures on Silica Spheres
In this paper we describe a very simple electroless plating method used to prepare Ag-coated silica beads. Robust Ag nanostructures can be reproducibly fabricated by soaking silica beads in ethanolic solutions of AgNO(3) and butylamine. When the molar ratio of butylamine to AgNO(3) is far below 1.0, distinct nanosized…
Preparation of Monodisperse Au/TiO2 Nanocatalysts via Self-Assembly
In this work, we report that presynthesized metallic nanoparticles (such as gold nanoparticles), rather than on-site growing ones that are prepared under thermally or photochemically activated conditions, can be “impregnated” uniformly onto premade oxide supports with organic interconnects which have bifunctional grou…
Matter-wave soliton control in optical lattices with topological dislocations
We address the concept of guiding and transporting matter-wave solitons along the channels of optical lattices made by interference patterns of beams containing topological wavefront dislocations. The local lattice distortions that occur around the dislocations cause solitons to move along reconfigurable paths, a phen…
Electronic structure, structural and optical properties of thermally evaporated CdTe thin films
Thin films of CdTe were deposited on glass substrates by thermal evaporation. From the XRD measurements itis found that the films are of zinc-blende-type structure. Transmittance, absorption, extinction, and refractive coefficients are measured. Electronic structure, band parameters and optical spectra of CdTe were ca…
Molecular Dynamics Simulation of Sputtering Process of Hydrogen and Graphene Sheets
To clarify the yielding mechanism of small hydrocarbon molecules in chemical sputtering between hydrogen and graphene sheets, we made classical molecular dynamics simulation with modified Brenner's REBO potential which we proposed to deal with chemical reaction. As the simulation model, we prepared more realistic phys…
Synthesis, Properties, and Applications of Ferromagnetic‐Filled Carbon Nanotubes.
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.
Theoretical analysis of polydispersity in the nematic phase of self-assembled semiflexible chains
In recent simulations of semiflexible equilibrium polymers [X. Lu and J. T. Kindt, J. Chem. Phys. 120, 10328 (2004)] a roughly biexponential distribution of chain lengths was observed in the nematic phase. In this study, we show that a theory representing the nematic phase as an equilibrium mixture of randomly oriente…
Resonance of curved nanowires
The effects of non-ideal experimental configuration on the mechanical resonance of boron (B) nanowires (NWs) were studied to obtain the corrected value for the Young’s modulus. The following effects have been theoretically considered: (i) the presence of intrinsic curvature, (ii) non-ideal clamps, (iii) spurious masse…
Strategies for Increasing the Sensitivity of Gadolinium Based MRI Contrast Agents
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.
Synthesis and properties of new aromatic poly(ester‐imide)s derived from 4‐p‐biphenyl‐2,6‐bis(4‐trimellitimidophenyl) pyridine and various dihydroxy compounds
Abstract A novel class of wholly aromatic poly(ester‐imide)s, having a biphenylene pendant group, with inherent viscosities of 0.32–0.49 dL g −1 was prepared by the diphenylchlorophosphate‐activated direct polyesterification of the preformed imide‐ring‐containing diacid, 4‐ p ‐biphenyl‐2,6‐bis(4‐trimellitimidophenyl)p…
Amphidynamic Crystals: Structural Blueprints for Molecular Machines
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.
Storing and Releasing Hydrogen with a Redox Switch
Give and take: A molecular cluster that readily takes up and stores two molecules of H2 also rapidly releases (milliseconds) the stored H2 by a simple redox process. This process represents a new method of hydrogen storage and release from a well-defined molecular material.
Production of Cu2O nanoparticles in SiO2by ion implantation and two-step annealing at different oxygen pressures
Two different methods were applied to fabricate cuprous-oxide (Cu 2 O) nanoparticles (NPs) in silica glasses (SiO 2 ), namely (i) low oxygen-pressure (LOP) oxidation of Cu NPs, which had previously been formed in SiO 2 by implantation of Cu ions and (ii) two-step annealing of Cu NPs in atmospheric-pressure oxygen gas…
Rapid compression induced solidification of two amorphous phases of poly(ethylene terephthalate)
Melts of poly(ethylene terephthalate) were solidified by rapid compression to 2 GPa within 20 ms and by a series of comparative processes including natural cooling, slow compressing and rapid cooling, respectively. By combining XRD and differential scanning calorimetry data of the recovered samples, it is made clear t…
Suppression of electron–electron repulsion and superconductivity in ultra-small carbon nanotubes
Recently, ultra-small diameter single wall nanotubes with diameter of ∼0.4 nm have been produced and many unusual properties were observed, such as superconductivity, leading to a transition temperature T c ∼15 K, much larger than that observed in the bundles of larger diameter tubes. By a comparison between two diffe…
Low temperature EPR spectra of the mesoscopic cluster V15: The role of antisymmetric exchange
The low temperature EPR spectra of the unique nanometer-scale molecular magnet V(15) are analyzed within the three-spin model preserving trigonal symmetry. The Hamiltonian includes isotropic and antisymmetric (AS) exchange interactions introduced by Dzyaloshinsky (Zh. Eksp. Teor. Fiz. 32, 1547 (1957) [Sov. Phys. JETP…
Pharmacokinetics of the doxorubicin magnetic nanoconjugate in mice. Effects of the nonuniform stationary magnetic field.
Pharmacokinetics of the doxorubicin (DOX) conjugates with magnetite nanoparticles of the core/ shell type in mice following i.v. injection in a dose of 12.5 microg Fe/g tissue w/w was studied using electron spin resonance technique (ESR). Conjugation of the DOX with magnetic nanoparticles was shown to considerably dec…
Li ion scattering from Au nanoclusters on TiO2(110)
The neutralization of low energy 7Li+ scattered from Au nanoclusters deposited on TiO2(110) was measured with time-of-flight spectroscopy as a function of cluster size, emission angle, and ion energy. The neutralization shows maxima for cluster diameters approximately 3 nm, and again for thick Au films. The data are c…