Materials Literature
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A manganese(IV)-oxo porphyrin catalyzes C-C bond formation between zinc porphyrins at the meso-position with a two-electron oxidant to afford the meso-meso linked porphyrin dimer efficiently. The meso-meso linked dimer is formed via formation of the porphyrin radical cation, and the rate-determining step in the cataly…
Monomorphic Pt octapod and tripod nanocrystals have been successfully synthesized by an iron nitrate modified polyol process, in which iron nitrate has been proven to be vitally important for slowing down the reduction rate of Pt precursors.
The effects of the structural geometry at the nanometer scale on the thermal resistance at a liquid molecule-solid interface, as well as the interfacial energy transport mechanism of liquid molecules, were investigated directly by the nonequilibrium classical molecular dynamics simulations. The 12-6 Lennard-Jones pote…
We demonstrate high current rectification in a new system comprising 30 nm of hydrated vanadium pentoxide and 100 nm of zinc oxide (V2O5·nH2O–ZnO) thin film structures. The devices are prepared using a low temperature (<150 °C), all atomic layer deposition process. A key element in the rectifying properties comes from…
This study aims to investigate the possibility of improving the flame Retardancy for the hybrid composite material consisting araldite resin (CY223). The hybrid composite was reinforced by hybrid fibers from carbon and Kevlar fibers on woven roving form (45o -0o), by using a surface layer of 4mm thick of Zinc Borate f…
Materials with nanosized and well-arranged pores have been researched actively in order to be applied to new technology fields. Especially, mesoporous material containing various pore structures is expected to have different pore structure. To form a mixed pore structure, ordered mesoporous silica films were prepared…
ZnO/ZnS heterostructure nanorod arrays are fabricated by a two-step electrochemical deposition method from dimethylsulfoxide (DMSO) aqueous solution. The XRD and TEM pattern indicate the ZnO/ZnS nanorods are composed of hexagonal wurtzite ZnS structure and hexagonal wurtzite ZnO structure. The optical and photocatalyt…
New heterosegment-junctioned hybrid nanotubes of polythiophene and heterometallic nanoparticles (Pd, Au NPs) have been synthesized by sequential electropolymerization of terthiophene-modified Pd and Au NPs in a nanoporous template.
The substituent effect of fluorine-containing polyimides with 4,4-(hexafluoro-isopropylidene) diphthalic anhydride (6FDA) group on the photo alignment of the liquid crystal (LC) molecule and the effect of 254 nm linearly polarized ultraviolet (LPUV) irradiation on the chemical structure were systematically investigate…
Macromolecular carrier materials based on N-(2-hydroxypropyl)methacrylamide (HPMA) are prototypic and well-characterized drug delivery systems that have been extensively evaluated in the past two decades, both at the preclinical and at the clinical level. Using several different imaging agents and techniques, HPMA cop…
Carbon nanotubes (CNTs) are attracting significant attention as a novel material for future innovations. Many in vitro studies have assessed the cytotoxicity of CNTs, but the effects of CNTs differ depending on the cell lines and the synthetic method adopted for fabricating CNTs. In the present study, the differential…
Recently, we found pure green photoluminescence (PL) at 540 nm (2.34 eV) in a vacuum, which is characteristic of a Si–Si bonded network polymer bearing n-butyl groups (organopolysilyne, SNP). SNP was carefully isolated as an orange-yellow solid by avoidance of contact with air and water in the polymer synthesis and PL…
Distribution maps of carbon deposited on nickel particles were obtained by micro-Raman spectroscopy. Nickel film was prepared on the oxide substrates of yttria stabilized zirconia (YSZ) and gadolinia doped ceria (GDC). Carbon deposition was induced by annealing in dry methane for 10 min at both 863 and 933 K. Morpholo…
We considered light scattering by a polydisperse ensemble of droplets of a nematic liquid crystal. To model light scattering by a monolayer of polymer-dispersed spherical droplets of a nematic liquid crystal with cylindrical symmetry of its internal structure, we proposed a semianalytical modeling method. The method i…
The hybridization of polyaniline (PANI) and TiO2 leads to unique materials, which exhibit the enhancement of photocatalytic properties. Further improvement requires high dispersion state of TiO2 in the hybrid. In this study, highly dispersed PANI nanofiber/TiO2 nanoparticles hybrids were obtained by modifying the surf…
A combination of inelastic neutron scattering (INS) spectroscopy and Raman spectroscopy with periodic density functional theory calculations is used to provide a complete assignment of the vibrational spectra of α-lithium amidoborane (α-LiNH(2)BH(3)). The Born charge density and the atomic motion up to the decompositi…
The ablation properties of two laminated composites, having both a glass ceramic matrix and different kinds of fibers (C or SiC) with the same architecture, are evaluated and compared. Ablation tests are performed using an oxyacetylene torch on samples having two different thicknesses. Mass loss and ablation depth are…
We show that films of poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) crosslinked with glycerol function well as hole injection layers for light-emitting diodes even after immersion in water. Neutron reflectometry, X-ray photoelectron spectroscopy, and nuclear reaction analysis are used to characterise the s…
Activity of monolithic Pd/Al 2 O 3 catalysts in the combustion of mine ventilation air methane The activity of Pd/Al 2 O 3 catalysts increases when Pd content is increased from 1% to 2%. Among these catalysts, 2%Pd/Al 2 O 3 shows the highest methane combustion activity. In a reduced form, the catalyst displays a highe…
CF3I gas, which is one of promising SF6 substitutions, is investigated from the view point of by-product generated in gas discharge, since its global warming potential (GWP) is quite low and its insulation performance is equivalent or superior to SF6 gas. The insulation performance of CF3I gas is examined through meas…