Materials Literature
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The synthesis of mesostructured silica from a tetrahydrofuran (THF)-based sol gel was carried out in the channels of an anodic alumina membrane (AAM) using the evaporation-induced self-assembly (EISA) method. Two different nonionic surfactants were used as structure-directing agents, the triblock copolymer Pluronic P1…
Crystal engineering: The syntheses, crystal structures, Raman spectra, and thermal properties of Cs10[Ge9]2[WO4] and Cs11[Ge9]2[VO4] containing [Ge9]4− clusters and oxometallate anions [MO4]x− (M=W und V) are reported. The picture shows a Raman spectrum obtained from single crystals of the double salt Cs10[Ge9]2[WO4]…
The objective of vascular tissue engineering is to develop tissue-engineered, biocompatible, small-diameter vessels suitable to withstand in vivo systolic pressures as well as be immunologically compatible with the patient, in order to minimize graft rejection. In this study, we present and compare two models of bioco…
The novel functional COOH SiC@PTAA nanocomposite (NC) of a core–shell morphology was prepared using a chemical oxidative polymerization of a 3-thiopheneacetic acid (TAA) monomer in the presence of modified core SiC-grafted-thiophene (SiC-T) nanoparticles (NPs). The surface-localized thiophene groups on the core SiC-T…
We study theoretically the effect of a new type of blocklike positional disorder on the effective electromagnetic properties of one-dimensional chains of resonant, high-permittivity dielectric particles, where particles are arranged into perfectly well-ordered blocks whose relative position is a random variable. This…
Controlling the elaboration of Coordination Networks (CoNet) on surfaces at the nanoscale remains a challenge. One suitable technique is the Sequential Growth in Solution (SGS), which has the advantage to be simple, cheap and fast. We addressed two issues in this article: i) the controlled synthesis of ultra thin film…
Titania supported ceria–lanthana solid solutions (CexLa1−xO2−δ/TiO2; CLT) have been synthesized by a facile and economical route. Existence of synergism between ceria–lanthana (CL) solid solutions and titania-anatase phase, which leads to decrease in the crystallite size, retarded titania phase transformation, and imp…
The variability of shell morphology and relative growth of the invasive pearl oyster Pinctada radiata was studied within and among ten populations from coastal Tunisia using discriminant tests. Therefore, 12 morphological characters were examined and 34 metric and weight ratios were defined. In addition to the classic…
We report the synthesis of a multifunctional block copolymer incorporated with pyrene and ruthenium terpyridyl thiocyanato complex moieties by reversible addition-fragmentation chain transfer polymerization. The pyrene block in the copolymer facilitates the dispersion of multiwalled carbon nanotubes in DMF solution be…
Photosensitive multilayered films were fabricated via layer-by-layer (LbL) assembly based on 5-(4-aminophenyl)-10,15,20-triphenyl-porphyrin (APP) terminated poly-L-lysine (APP-PLL) and DNA (herring sperm). It was found that the distinctive absorbance of porphyrin at 425 nm after light illumination decreased linearly w…
Cyanide group is a robust electron-mediate ligand, widely used in functional coordination polymers. Synthesis of cyanide-containing functional coordination polymersvia solvothermal in situ reaction is a new efficient approach. In this paper, four novel ternary coordination polymers, namely [Ag3(trz)2(CN)]n (1), [Ag3(d…
We report a neutron diffraction study of the magnetic phase transitions in the charge-density wave (CDW) TbTe(3) compound. We discover that in the paramagnetic phase there are strong 2D-like magnetic correlations, consistent with the pronounced anisotropy of the chemical structure. A long-range incommensurate magnetic…
A complete diagonalization (of energy matrix) method based on the cluster approach (where the covalence effect due to the admixture between the orbitals of the central d n ion and that of ligands is considered) was applied to calculate the spin-Hamiltonian parameters (g factors, g | and g ⊥, and hyperfine structure co…
To improve the chemical, physical, mechanical and thermal properties of polyvinyl acetate (PVAc), N-hydroxymethyl acrylamide (NMA) was used to polymerize with vinyl acetate (VAc). During the emulsion polymerization of VAc using polyvinyl alcohol as protective colloid and ammonium persulfate as initiator, PVAc-NMA was…
Abstract Silicon carbide was incorporated in poly(dimethyl siloxane) (PDMS) in combination with multiwall carbon nanotubes (MWCNTs) to improve the thermal conduction behavior. The amount of silicon carbide was increased from 0 to 150 phr and the amount of MWCNTs was increased from 0 to 8 phr at a fixed amount of silic…
The interaction between heparin, a polyanion, and a polycationic dendrimer with a glycine core and lysine branches Gly-Lys63(NH2)64 has been investigated. Complexation was assessed by transmission electron microscopy, size and zeta potential measurements, methylene blue spectroscopy, and measuring the anti-coagulant a…
Abstract A model is developed to predict rates of undesirable reactions in the low‐moisture, high‐temperature finishing stage of nylon 66 production. The model contains 56 unknown parameters and initial conditions, which are ranked based on their influence on model predictions, correlation with other parameters and un…
Staphylococcus aureus is an opportunistic Gram-positive bacterium which causes a wide variety of diseases ranging from minor skin infections to potentially fatal conditions such as pneumonia, meningitis and septicaemia. The pathogen is a leading cause of nosocomial acquired infections, a problem that is exacerbated by…
Adsorption of Pb monomers (Pb-m) and Pb dimers (Pb-d) on graphene containing single vacancies was studied using density functional theory. We found that both Pb-m and Pb-d can chemically bind to graphene and turn the systems into semiconductors with moderate energy gaps. The spin–orbit (SO) splitting of the bands is s…
Lepidoperan silks provide a superb opportunity for comparative studies of spinning and fiber characteristics. Comparing the four species, Bombyx mori (China), Actias selene (India), Antheraea yamamai (Japan), Gonometa postica (Africa), allows us to examine differences on the family, species, and race levels. Measured…