Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAlternating Chains with Ferromagnetic and Antiferromagnetic Interactions. Theory and Magnetic PropertiesJuan J. Borras-Almenar, Eugenio Coronado, Jacques Curely, Roland Georges, and Jean Claude GianduzzoCite this: Inorg. Chem. 1994, 33, 23, 5171–5175Publication Date (Print):…
The synthesis and (chir)optical properties of a highly regioregular optically active 3-substituted polythiophene are reported. Using the McCullough method a regioselectivity of more than 98% is found for the head-to-tail coupling in 3-[2-((S)-2-methylbutoxy)ethyl]polythiophene 1. Contrary to the small effects observed…
Boron nitride (BN) thin films have been grown on [100] oriented single crystal Si, diamond, Cu and Ni substrates by ion beam assisted deposition using electron beam evaporation of boron together with simultaneous bombardment by nitrogen and argon ions. Characterization by Fourier-transform infrared spectroscopy and hi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNeutron and X-ray Structural Characterization of the Hexaaquavanadium(II) Compound VSO4.cntdot.7H2OF. Albert Cotton, Larry R. Falvello, Carlos A. Murillo, Isabel Pascual, Arthur J. Schultz, and Milagros TomasCite this: Inorg. Chem. 1994, 33, 24, 5391–5395Publication Date (Pr…
Abstract Selective catalytic reduction of NO x has been recognized as a very effective method to achieve low NO x emissions. A family of versatile catalyst technologies has been developed by Engelhard to control NO x emissions over a wide range of operating temperatures, 177 to 593°C (350 to 1100°F). Reaction mechanis…
The 1:1 compound, CeA1O 3 , in the system Ce 2 O 3 –Al 2 O 3 has been synthesized from the oxides and shown to have a perovskite‐like tetragonal unit cell with the lattice parameters a = 3.763 and c = 3.792 Å. A new XRD pattern is suggested for CeA1O 3 . This compound is shown to be stable up to 1950°C. The 1:11 compo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoenhanced van der Waals Attractive Force of Small Metallic ParticlesKeisaku KimuraCite this: J. Phys. Chem. 1994, 98, 46, 11997–12002Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissue 1 November 1994https://pubs.acs.o…
Most materials (with the possible exception of f.c.c. metals) exhibit the well-known brittle-to-ductile transition (BDT) with increase in temperature. The variation of the fracture toughness, (K), with temperature is usually gradual in the brittle regime, but a dramatic rapid increase occurs over a narrow temperature…
Abstract Insight into the supramolecular structure formed by a polymethacrylate with a highly tapered side chain is obtained from parallel X‐ray analysis of oriented fibers of the polymer and its monomeric precursor. The polymer is poly(2‐{2‐[2‐(2‐methacryloyloxyethoxy)ethoxy]ethoxy}ethyl 3,4,5‐tris(p‐dodecyloxybenzyl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRate Mechanism of Plasticity in the Crystalline Component of Semicrystalline Nylon 6L. Lin and A. S. ArgonCite this: Macromolecules 1994, 27, 23, 6903–6914Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissue 1 November 1994…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesulfurization of Hot Coal-Derived Fuel Gases with Manganese-Based Regenerable Sorbents. 2. Regeneration and Multicycle TestsR. Ben-Slimane and M. T. HepworthCite this: Energy Fuels 1994, 8, 6, 1184–1191Publication Date (Print):November 1, 1994Publication History Published…
A method to compute diffractive elements focusing in a set of scaled lines located in different focal planes along the optical axis is considered. A phase nonlinearity is applied to the phase function of a focusator in a line. It is proved that the selection of the nonlinearity is reduced to the problem of the phase d…
Abstract Chemical crosslink densities of gum and carbon black-filled natural rubber (NR) and styrene-butadiene rubber (SBR) were estimated by using a newly developed rheometer. The rheometer is the Rubber Process Analyzer (RPA 2000) which is designed specifically to measure dynamic properties such as shear storage mod…
<div class="htmlview paragraph">The need to assess the effect of exhaust gas emissions from heavy duty vehicles (buses and trucks) on emission inventories is urgent. Exhaust gas emissions measured during the fuel economy measurement test procedures that are used in different countries sometimes do not represent…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of the Luminescent *Cu(CN)2Br2- ExciplexAttila Horvath, Craig E. Wood, and Kenneth L. StevensonCite this: Inorg. Chem. 1994, 33, 23, 5351–5354Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissue 1 November…
Dilute solution phase scanning microcalorimetric transition data for 27 members of the pluronic ABA block copolymer family are presented. Analysis of these data suggest a correlation between thermodynamic parameters for the observed transitions and poly(propylene oxide) content.
Perovskite type La0.95Ba0.05MO3 (M=Mn, FeorCo) oxides were prepared by a liquid precursor method and characterized by X-ray diffraction, oxygen desorption, and X-ray photoelectron spectroscopic studies. XPS analysis revealed the characteristic changes of the O1s peak (∼530 eV) resulting from the substitution of Ba in…
We report a transmission electron microscopy study of α-(Al-Mn-Fe-Si) phases, isostructural to the α-(Al-Mn-Si) approximant phase. Selected-area diffraction patterns exhibit a noticeable diffuse scattering due to short-range ordering. We show that the ordering effect is reinforced by the Mn additions. This diffuse sca…
The infrared-to-blue upconversion in ${\mathrm{Pr}}^{3+}$-doped yttrium aluminum garnet and yttrium lithium fluoride crystals has been studied at temperatures between 4.4 and 300 K for different activator concentrations. The excitation spectra and decay-time measurements indicated the sequential absorption of two phot…
Poly-beta-hydroxybutyric acid (PHB) was produced from xylose and lactose by using Pseudomonas cepacia. Approximately 50% PHB (grams of PHB total/grams of biomass total) was produced. With a laser-based fluorescent probe, beta-galactosidase activity was shown to be induced in P. cepacia cells grown on lactose but not i…