Materials Literature
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The author synthesized graft copolymers with polyvinylpropionate and polyaniline (PVPr-g-PANi), via chemical and electrochemical methods that have well suitable processible solubility. PVPr-g-PANi exhibit sensing properties for some of organophosphorous toxic vapors. It is known that pesticide poisons are very importa…
Abstract The permeance properties of a nanoporous silica membrane were first evaluated in a laboratory‐scale porous silica membrane reactor (MR). The results indicated that CO, CO2, and N2 inhibited H2 permeation. Increased H2 permeability and selectivity were obtained when gas was transferred from the lumen side to t…
A new approach to polymer cross-linking is investigated using a cascading cycloreversion of a maleimide-furan adduct and a double 1,3-dipolar cycloaddition between a sydnone and maleimide. The cross-linking proceeds quantitatively above 63 °C, despite the polymer possessing no observable glass transition temperature.…
In order to obtain a suitable formulation of designing direct synthesis of acrylic latexes to be used as emulsion pressure sensitive adhesives (EPSA), having high shear resistance together with high peel strength and tack, free radical emulsion polymerization of hard monomers, such as styrene (St), vinyl acetate monom…
Abstract A novel intercluster compound, [( n ‐C 4 H 9 ) 4 P] 3 [H 3 V 10 O 28 ] (IL 01 ‐V 10 ), constructed from the tetrabutylphosphonium cation and decavanadate, has been synthesized and unequivocally characterized by elemental analysis, FTIR spectroscopy, mass spectrometry, X‐ray crystallography, and solution 1 H,…
Thermodynamic parameter Γ and thermodynamic scaling parameter γ for low-frequency relaxation time, which characterize flip-flop motion in a nematic phase, were verified by molecular dynamics simulation with a simple potential based on the Maier-Saupe theory. The parameter Γ, which is the slope of the logarithm for tem…
Correlated electronic and structural distortions in individual carbon nanotubes induced by photon excitation are observed for the first time by using a unique in situ transmission electron microscope configuration. By combining sub-100-meV resolution electron energy-loss spectroscopy with in situ photon excitation of…
We present a joint experimental and theoretical study of the early stage dynamics of photoexcited charges in a prototypical organic/inorganic interface. By using femtosecond pump–probe experiments we compared the photophysic of a layer-by-layer hybrid structure obtained by alternating CdSe nanocrystals and poly( p -st…
Abstract Magnesium and its alloys have been the focus of the development of biodegradable metallic implant materials for years. Since water is reduced to form hydrogen gas during their corrosion, the amount and rate of hydrogen evolution, and therefore the dissolved hydrogen, could be used as an indicator to monitor a…
Six new complexes were synthesized in a 0.1 M aqueous carbonate solution and characterized by elemental analyses, thermogravimetric analyses, infrared spectroscopy and X-ray single crystal structure analyses. The single-crystal structure analysis was on K11[(A-AsW9O34)2(H2ODy)3CO3]·22H2O. The results revealed that the…
A new organic–inorganic hybrid compound, [{Cu2(2,2′–bipy)2(pz)(gly)}2P2W18O62]·H2O (bipy = bipyridine, pz = pyrazine, gly = glycine) (1), has been hydrothermally synthesized and characterized by elemental analysis, IR, thermal gravimetric, and single- crystal X-ray diffraction. Compound 1 is an infinite one-dimensiona…
We report on the synthesis of tuned energy band gap Mg(x)Zn(1-x)O nanofibers (NFs) with different Mg(2+) content via the sol-gel electrospinning (ES) technique wherein the addition of the doping material affects not only the morphologies of as-spun ZnAc/PVA and MgAc/ZnAc/PVA nanofibers but also the crystal microstruct…
This work reports an experimental study on the temperature dependence of the structural parameters of LiCrO${}_{2}$ (LCO) and Li${}_{0.99}$Cu${}_{0.01}$CrO${}_{2}$ (LCCO) by using a synchrotron x-ray diffraction technique. A significant magnetoelastic coupling is revealed by the anomalies observed in lattice parameter…
Crystalline, high-surface-area, hexagonal mesoporous MCM-41 having uniform pore sizes and good thermal stability was successfully synthesized at 90°–120°C in 30 min using low-power microwave irradiation. This appears to be the first comprehensive and quantitative investigation of the comparatively rapid synthesis of m…
The combination of photoluminescence (PL) and cholesteric liquid crystal (CLC) provides interesting complementary features for an optimized display application. Distortion of the Bragg lattice of CLCs decreases selective reflection but increases fluorescence intensity; recovery of a uniform lattice in turn results in…
Oxygen plasma was used to modify the surface properties of carbon fibers and their adhesion strength with an acrylate resin cured by electron beam. A characterization of the surface topography and the surface chemistry was carried out (topography at a micrometric and nanometric scale, specific surface area, temperatur…
In this paper, we review results on epitaxial orientation relationship, interfacial energy and atomistic studies of Au/TiO2 interface with in particular the model Au//(1 1 0)TiO2 system. The review is limited to contributions made by electron microscopy and diffraction techniques. Experimental results are also compare…
Phosphorus-containing poly(ethylene terephthalate- co -diethylene terephthalate) (PEDT) with a low melting temperature was synthesized through esterification and copolycondensation of terephthalic acid, ethylene glycol, diethylene glycol (DEG), and 3-(hydroxyphenylphosphinyl)propionic acid (HPPPA). DSC results showed…
An efficient crystallization screening method is important in drug design to yield high resolution crystallographic structures of protein–ligand complexes to understand inhibitor selectivity and potency for various members of an enzyme family. The strategy starts with a single condition for each protein–ligand complex…
The most efficient catalysts have been developed and optimized by living systems. Indeed, in vivo enzyme-catalyzed reactions are several orders of magnitude more efficient than platinum-based catalyzed reactions. However, the rate of reaction and equilibrium interactions are considerably reduced when the biological sy…