Materials Literature
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Effects of 200 ppm aqueous dispersion of silver nano-particles on gas and liquid permeability of particleboards is studied here. Nano-silver was added at two levels of 100 and 150 milli-liters/kg dry weight wood particles and compared with control boards; all other manufacturing variables remained constant. Gas permea…
A natural bentonite obtained from Khorasan, Iran, was submitted to acid activation with sulphuric acid. Sample aliquots (5gr) were leached with 100 ml H2SO4 solutions of various concentrations (2-7N) at 80±2 oC for 2 hours. X-ray diffraction, chemical analysis, infrared spectroscopy and specific surface area measureme…
In this article, the tube-like nickel oxide materials was synthesized by decomposition of nickel oxalate which was prepared by a facile hydrothermal method. Some experimental parameters affecting the morphology were studied. The electrochemical capacitive properties of the nickel oxide macrotubes were investigated usi…
Anionically synthesized polyisoprene (PI) was catalytically isomerized with RuHCl(CO)(PPh3)3 to produce conjugated PI (CPI). Both the reaction time and temperature were varied to control the number of conjugated dienes along the CPI backbone. The same reaction scheme also conjugated polycyclooctadiene, demonstrating t…
A pentapeptide containing hydrophobic residues self-assembles to form nonporous materials in solid state. The X-ray crystallography reveals that there is no pore in the crystal and the peptide exhibits supramolecular helical architecture prompted by the formation of intra- and intermolecular hydrogen bonds. But the ph…
Ho 3+ /Yb 3+ /Tm 3+ tri-doped Y 2 SiO 5 phosphors were synthesized by the coprecipitation method. Bright white luminescence upon 980 nm near-infrared excitation can be observed for the sample at the optimum chemical composition of Y 2 SiO 5 : 5%Yb 3+ /0.4%Tm 3+ /0.1%Ho 3+ , and the measured white light consisting of b…
Ni(OH)2@Co(OH)2 core–shell nanocolumns have been synthesized by an easy wet chemical process. Characterizations reveal that the layer structure is formed by stacking of several hexagonal nanosheets along the [001] direction. Each sheet is found to be of good crystallinity according to high-resolution transmission elec…
Magnetic hybrid liquid crystal composites have been obtained by thermal decomposition of a cobalt coordination precursor in the presence of a liquid crystal polymer and functional molecules (acid or amine) interacting with the precursor. The final materials contain anisotropic and/or spherical nanoparticles depending…
In recent years colloidal particles and capsules, layer-by-layer (LbL) coated with biocompatible polyelectrolytes, have received much attention as drug-delivery systems. In this study an LbL-assembled, biopolymer-based multilayer system was established as a combined transporter and sensor for monitoring intracellular…
This study describes the effects of F−, Cl−, Br−, and I− anions on the sensitivity of a biosensor assembled via layer-by-layer deposition of poly(diallyldimethylammonium chloride) (PDDA) and choline oxidase (ChO) on the surface of a graphite electrode coated with MnO2. A four-fold increase in sensitivity of the MnO2/P…
Ferrite materials are potential candidates for modern technological applications because of their tunable electrical and magnetic properties. The excellent combination of magnetic and dielectric properties of magnesium ferrites can be used to fulfill the future demand for high-frequency applications such as antennas.…
In the emerging area of nanotechnology, a key issue is related to the potential impacts of the novel nanomaterials on the environment and human health, so that this technology can be used with minimal risk. Specifically designed to combine on a single structure multipurpose tags and properties, smart nanomaterials nee…
Hydrazone ligands modified with benzothiazole and oxime groups produce spin-coupled tetra- (Mn, Ni, Cu), penta- (Co), and hexanuclear (Cu) self-assembled clusters.
Functionalized tris-dipicolinate europium(III) complexes present a very important two-photon absorption cross-section (up to 775 GM) but exhibit a weak stability in aqueous solutions due to the ligand substitution by water molecules. This dissociation decreases radically the luminescence quantum yield and lifetime of…
Eu(3+) doped Y(OH)(3)@β-NaYF(4) core-shell nanotubes were prepared by an in situ synthesis method. The photoluminescence properties were studied under different excitation wavelengths. When the excitation wavelength is 363, 380, and 397 nm, the spectral configurations are similar, and are different from that under 414…
There is a revived interest in the discovery and development of new materials and devices for radiation detection for nuclear non-proliferation and medical imaging. Conjugated polymers emerge as a potential candidate for dosimetry and scintillation. This report provides an overview of the fundamental detection physics…
We here demonstrate for the first time the fabrication of jellyfish-like Au-Ag alloys through sequential chemical deposition on a PANI substrate. This methodology can be applied to fabricate not only nanoparticles with complex morphology but also alloys with various compositions.
The simplex optimization for high porous carbons preparation The microporous carbon materials were prepared by chemical activation of Polish coal with potassium hydroxide using the simplex design method for planning the experiments. The experimental parameters were varied to identify the optimum conditions. Coal can b…
This study presents a feasible method for the fabrication of multifunctional magnetic nanoparticles (MNPs) for the targeted coadministration of two anticancer agents, paclitaxel (PTX) and curcumin (CUR). MNPs were first surface modified with N-[3-(trimethoxysilyl)propyl]ethylenediamine to form a self-assembled monolay…
Molten alloys with 50-mol% In-Sb, Sn-Sb, Sb-Bi, and Sb-Pb were examined as anodes for solid oxide fuel cells at 973 K.The cells were operated in the battery mode, without added fuel, in order to understand the oxidation characteristics of these alloys at electrolyte interfaces.Cells using 50-mol% In-Sb and Sn-Sb mixtu…