Materials Literature
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In recent days Zinc oxide (ZnO) attracted much interest due to its versatibility and size dependent opto-electronic properties. ZnO flake structures have been hydrothermally synthesized in the reaction of aqueous solution of cetyl trimethyl ammonium bromide (CTAB) and NaOH at 373.15 K. It was found that, the volume of…
The ZnS semiconducting nanoparticles were synthesized by simple chemical reaction of ZnCl2 and Na2S in aqueous solution. The main advantage of this method is the use of non toxic precursors and water is used as solvent. The as-prepared ZnS nanoparticles have average size of 12 nm. The structural, morphological, chemic…
This paper describes the experimental results of the fluorescence and phosphorescence observations in the Ca 2 MgSi 2 O 7 : Eu 2 + , Dy 3 + phosphors. Discussions are made to elucidate the relationship between the photoluminescence of Eu 2 + and the crystal structure of the host, the luminescent quenching of the emiss…
In this paper, based on the literature data, are described the electrochemical theoretical concepts for the two methods used for determination of instantaneous corrosion rates from polarization measurements: extrapolation of the Tafel slopes with corrosion potential - Stern method and polarization resistance - Stern-G…
High-tech products made by nano-materials are tightly connected to people's life. However environmental impacts and health effects of nanoparticles are widely getting attention. In this paper, we focused on the potential size-dependent cytotoxicity of nanomaterials. Silica (SiO2) nanoparticles were used as model mater…
Fibrous polymers with extremely low electrical conductivity such as polypropylene (PP), polycarbonate, polyurethane, and polyethylene are commonly employed as air-filter materials. The charge accumulated on such materials due to tribocharging effects inherent to the manufacturing process might be harmful either to the…
Integration of Vertical Carbon Nanotube Bundles for Interconnects, Chiodarelli, Nicoló, Kellens, Kristof, Cott, Daire J., Peys, Nick, Arstila, Kai, Heyns, Marc, De Gendt, Stefan, Groeseneken, Guido, Vereecken, Philippe M.
A new binaphthylbisbipyridine-based ligand underwent diastereoselective self-assembly with silver(I) ions to form nanotubular homochiral helical coordination polymers, which further hierarchically self-assemble into nanofibers, capable of immobilizing organic solvents.
The enhancement in the dielectric constant of and when compared to pure is reported. Sm- and Ho-substituted Ni ferrites crystallize in the cubic inverse spinel phase. Frequency variation in the dielectric constant shows the dispersion that can be modeled with a modified Debye's function, which considers the possibilit…
A chiral nematic liquid crystal (N*-LC)/chiral ionic liquid (CIL) composite with unique electro-optical characteristics was prepared and filled into a planar treated cell. When an electric field was applied to the cell, the anions and the cations of CIL moved towards the anode and the cathode of the power supply, resp…
Ranging from nano- to granular-scales, control of particle assembly can be achieved by limiting the available free space, for example by increasing the concentration of particles ("crowding") or through their restriction to 2D environments. It is unclear, however, if self-assembly principles governing thermally-equili…
Grafted membranes were prepared through chemical graft copolymerization of methyl methacrylate (MMA) onto isotactic polypropylene film (IPP). The IPP films were grafted with MMA molecules resulting in IPP-g-MMA grafts using benzoyl peroxide as an initiator in an inert nitrogen atmosphere. Using this method, the degree…
The sequential application of mild and hard anodization techniques in the fabrication of porous alumina membranes allows one to decrease the number of continuous pores in anodized aluminium oxide (AAO) templates. Initially, standard mild anodization techniques were used to create porous templates with 100 nm interpore…
The effects of a silk amino acid (SAA) preparation on the physical stamina and male reproductive function of mice were investigated. Eight-week-old male ICR mice (29-31 g) were orally administered SAA (50, 160 or 500 mg/kg) for 44 d during 30-min daily swimming exercise. The mice were subjected to a weight-loaded (5%…
A novel and simple method for the fabrication of polypyrrole (PPy) capsules and nanotubes via a chemical oxidation polymerization in the presence of Rhodamine B (RB) at room temperature is described.
A new 1D coordination polymer comprised of [Mn(III)(6)O(2)(Et-sao)(6)(EtOH)(4)(H(2)O)(2)](2+) units and bithiophene dicarboxylato was synthesized by mixing EtsaoH(2) (salicylaldoxime), H(2)btda (2,2'-bithiophene-5,5'-dicarboxylic acid) and Mn(ClO(4))(2)·6H(2)O in the presence of NEt(4)OH. The crystal structure was det…
Here we demonstrate for the first time a novel nanosieve approach for tuning the size, shape, dispersion and the quantity of the gallium oxide nanoparticles inside a mesoporous silica support with a three dimensional porous structure, high surface area, and large pore volume (KIT-6). It was found that the size and sha…
Large-scale density functional theory (DFT) calculations found significant preferences of two-coordinated copper cations as Xe binding site in ZSM-5. Such site-preferences cannot be seen in usual adsorbents such as the CO or NO molecule inside Cu-ZSM-5 as well as the Xe atom inside alkali-metal exchanged ZSM-5s. A key…
The sorption of fluids in mesoporous silica is an important physical phenomenon with a wide range of applications. Traditionally, mesoporous materials have been considered as inert scaffolds for the sorption and condensation reaction of the fluid. Here we present in situ small angle X-ray diffraction experiments provi…
The Mn(hfac)(2) complex of the paramagnetic 4-(benzoxazol-2'-yl)-1,2,3,5-dithiadiazolyl ligand is reported (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonato-). The Mn(ii) and radical ligand spins are coupled antiferromagnetically (AF) in the coordination complex. Short sulfur-oxygen contacts between molecules provide an e…