Materials Literature
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The charge density of oxalic acid dihydrate has been redetermined from 100 K X-ray diffraction data using a SMART CCD diffractometer. The quality of the data has been carefully analyzed and shown to be at least as good as that obtained using a point detector. The positional and thermal parameters obtained from least-s…
The quantitative development of the nonergodic mobile order thermodynamics involving the new interpretation of the hydrophobic effect leads to a general solubility equation. This equation is applied to predict the aqueous and alcohol solubility of chemicals ranging from nonpolar or slightly polar with no H-bonding cap…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTHelicity Induction of Poly(3-carboxyphenyl isocyanate) by Chiral Acid−Base InteractionKatsuhiro Maeda, Norikazu Yamamoto, and Yoshio OkamotoView Author Information Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, J…
Effects of the natural degradation of protective organic coatings after exposure for some years in an industrial atmosphere (Turin, Italy) and the consequences of artificial weathering in an ultraviolet (UV) chamber (ASTM G 53) and salt spray test chamber (ASTM B 117) were compared using electrochemical, infrared, and…
Conductivity and dielectric constant of a three-component 0-3 composite of epoxy resin–barium titanate–carbon black (0-3 composites are systems in which the filler is in the form of 0-dimensional (point-like, disperse) particles in a three-dimensional polymeric matrix1) have been investigated both at DC and the freque…
Surface thrombus formation on implantable biomaterials such as polyurethane is a major concern when utilizing these materials in the clinical setting. Thrombin, which is responsible for thrombus formation and smooth muscle cell activation, has been the target of numerous surface modification strategies in an effort to…
The features of combining a chemically modified electrode (CME) with an artificial receptor system, prepared by imprinting electropolymerized [Ni (Protoporphyrin IX) dimethyl ester] [Ni-(PPIX)] in the presence of nitrobenzene, were studied. The responses of the modified glassy carbon electrode towards template molecul…
As a first step towards the understanding of the thermodynamical properties of quasiperiodic structures, we have performed both analytical and numerical calculations of the specific heats associated with successive hierarchical approximations to multiscale fractal energy spectra. We show that, in a certain range of te…
Monte Carlo simulations have been carried out for aqueous charged colloidal suspensions interacting via an effective pair potential ${U}_{s}(r),$ which has the long-range attractive term in addition to the usual screened Coulomb repulsion. Simulations are performed over four orders of magnitude of particle volume frac…
The electrical conductivity, magnetic susceptibility, magnetization, and submillimeter (v=5∓20 cm−1) permittivity and dynamic conductivity of La1−x Sr x MnO3 (0≤x≤ 0.45) single crystals are investigated. The anomalies in the temperature dependences of these quantities are identified with diverse magnetic and structura…
This book surveys recent theoretical and experimental studies of optical properties of low-dimensional materials. As an extended version of Optical Properties of Low-Dimensional Materials (Volume 1, published in 1995 by World Scientific), Volume 2 covers a wide range of interesting low-dimensional materials including…
A microphase separation transition (MST) of a thermoplastic elastomer based on soft segments of poly(tetra methylene oxide) and hard crystalline segments of poly(tetra methylene terephthalate) has been studied by means of rheological measurements, differential scanning calorimetry (DSC), and wide-angle X-ray scatterin…
Oxidation of [Rh 2 (O 2 CEt) 4 (PR 3 ) 2 ] (R: cy = cyclohexyl and Pr i = iso-propyl) with ferrocenium ion gave stable salts of their cationic radicals. Their X-ray structures showed ca. 0.048 Å longer Rh−Rh and ca. 0.12 Å shorter Rh−P bonds than those of the diamagnetic neutral complexes. The pyramids of the phosphin…
Abstract Adsorption-desorption of Cd to Ca montmorillonite (SAz-1) was studied at concentrations ranging from 44.5 to 266.8 μ M . An adsorption model was employed in the analysis of the data. The procedure consists of solving the electrostatic Gouy-Chapman equations and calculating adsorbed amounts of the cations as t…
Shape- or size-selective micro- and mesoporous solids find applications as catalysts, catalyst supports, and membrane materials. Here the synthesis of a high surface area microporous base is reported. This material, prepared by ammonolysis of oligomeric methylsilazanes, is a nitride analogue of amorphous silica-based…
A new optically active (>99% ee) organosilicon compound, 1-(1-naphthyl)-1-phenyl-1-vinyl-3,3-dimethyl-3-hydro-1,3-disiloxane was prepared. This bifunctional disiloxane was used as the monomer to synthesize optically active and isotactic poly[{(1 S )-1-(1-naphthyl)-1-phenyl-3,3-dimethyldisiloxane-1,3-diyl}ethylene] via…
A tetrafunctional epoxy monomer, N,N,N′-N′-tetraglycidyl-4,4′-diaminodiphenyl methane (TGDDM), has demonstrated to be a highly efficient reactive compatibilizer in compatibilizing the immiscible and incompatible polymer blends of polyamide-6 (PA6) and poly(2,6-dimethyl-1,4-phenylene ether) (PPE). This epoxy coupler ca…
Molecular beam epitaxy of SrTiO 3 thin films on a Si(100)-2×1 surface has been studied using reflection high-energy electron diffraction (RHEED), an atomic force microscope (AFM) and X-ray diffraction (XRD) as a function of the thickness of the SrO buffer layer and growth temperature. Epitaxial SrTiO 3 films do not gr…
Composites of polyaniline and were prepared by casting on a Ni electrode substrate an N ‐methylpyrrolidinone solution containing dissolved polyaniline in its reduced state and dispersed crystalline powder. Charge‐discharge tests of the as‐prepared composites showed that redox reactions of both polyaniline and particle…
Abstract N-Isopropylcholamide afforded three kinds of matters in organic solvents; organogels, inclusion crystals, and guest-free crystals. The gelation occurred in aromatic liquids in the presence of methanol as a good solvent, while the inclusion crystals were formed when adding ethanol, 1-propanol, or acetone as a…