Materials Literature
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Abstract Although specimen smectities (e.g., SWy‐1) are often used as analogues of the exchanger phase in smectitic soils, few comparisons of metal ion sorption on specimen and soil smectites have been made. In this study, the sorption of Cd was measured on SWy‐1 and on clay‐sized separates from two smectitic subsoils…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGadolinium(III) texaphyrin: a novel MRI contrast agentJonathan L. Sessler, Tarak D. Mody, Gregory W. Hemmi, Vincent Lynch, Stuart W. Young, and Richard A. MillerCite this: J. Am. Chem. Soc. 1993, 115, 22, 10368–10369Publication Date (Print):November 1, 1993Publication Histor…
Experimental methods and theoretical models that enable interaction effects in particulate systems to be examined are discussed. Two distinct regimes of behavior are considered. The weak interaction case is examined and it is shown that, in general, low-field susceptibility studies can be used to establish the effects…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyndiospecific ring-opening polymerization of .beta.-butyrolactone to form predominantly syndiotactic poly(.beta.-hydroxybutyrate) using tin(IV) catalystsJohn E. Kemnitzer, Stephen P. McCarthy, and Richard A. GrossCite this: Macromolecules 1993, 26, 23, 6143–6150Publication…
We report neutron-diffraction studies of antiferromagnetism in various forms of epitaxially grown zinc-blende (ZB) MnTe: in semibulk (\ensuremath{\sim}1 \ensuremath{\mu}m thick) single-crystal films of pure MnTe, in its magnetically diluted derivative ${\mathrm{Zn}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Mn}}_…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbide formation via carbon monoxide dissociation across a tungsten-tungsten triple bondRebecca L. Miller, Peter T. Wolczanski, and Arnold L. RheingoldCite this: J. Am. Chem. Soc. 1993, 115, 22, 10422–10423Publication Date (Print):November 1, 1993Publication History Publish…
We measure optically the quadrupolar order S induced by a stabilizing electric field E in the isotropic phase of the nematogenic 4'-n-pentyl-4-cyanobiphenyl, with large positive dielectric anisotropy ${\mathrm{\ensuremath{\epsilon}}}_{\mathit{a}}$\ensuremath{\sim}10. For high enough field and low enough temperature, a…
The dynamic responses of a spherical bubble in an acoustic standing wave field are studied numerically. The equations of motion in the translational and the radial directions are solved simultaneously. It is shown that a bubble which is larger than the resonance size moves to a node of the pressure field and its radia…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEndoperoxide formation in a guanosine derivativeChimin Sheu and Christopher S. FooteCite this: J. Am. Chem. Soc. 1993, 115, 22, 10446–10447Publication Date (Print):November 1, 1993Publication History Published online1 May 2002Published inissue 1 November 1993https://pubs.acs…
The atomic and electronic structures of lattice defects in oxygen-deficient rutile ${\mathrm{TiO}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$ (1\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}4}$\ensuremath{\lesssim}x\ensuremath{\lesssim}3\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}3}$)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-pressure single-crystal x-ray diffraction study of two spin-crossover iron(II) complexes: Fe(Phen)2(NCS)2 and Fe(Btz)2(NCS)2Thierry Granier, Bernard Gallois, Jacques Gaultier, Jose Antonio Real, and Jacqueline ZarembowitchCite this: Inorg. Chem. 1993, 32, 23, 5305–5312P…
The hydrolytic degradation of poly(DL-lactic acid) in an aqueous environment in which hydroxyl radicals have been generated has been investigated. Different methods (gel permeation chromatography, differential scanning calorimetry, and scanning electron microscopy) were employed to study the mechanisms of degradation…
Transparent smooth and crack-free BaTiO3 thin films were deposited on stainless steel, fused silica, platinum plates, and platinized silicon wafers (100) using the sol-gel process. Barium 2-ethyl hexanoate and titanium isopropoxide were used as precursors. Annealing of the films at 750 °C for 2 h was necessary to get…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFerrocenyl substituted octakis(dimethylsiloxy)octasilsesquioxanes: a new class of supramolecular organometallic compounds. Synthesis, characterization, and electrochemistryMoises Moran, Carmen M. Casado, Isabel Cuadrado, and Jose LosadaCite this: Organometallics 1993, 12, 11…
The structure of liquid dimethylsulphoxide (DMSO) at 25 °C is explored using a combination of neutron diffraction with isotope substitution and computer simulation techniques. The potentials used in the computer simulation consist of Coulomb and 6-12 Lennard-Jones interactions for each of the carbon, oxygen, and sulfu…
The discovery of polydomain phases has been one of the fundamental results of the experimental and theoretical studies of solid phase transformations. These phases consist of the alternation of domains: twins of a product phase or layers of different product phases. Elastic interactions between domains lead to the for…
Aiming to obtain a rewritable compact disc (CD-rewritable) with high performance at both CD-velocity (CD1X) and double CD-velocity (CD2X), the phase change optical disc with the Ag-In-Sb-Te system has been developed. In the one-pass overwriting mode with eight-to-fourteen modulation, high carrier-to-noise ratio, wide…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of size and morphology of soot aggregates as determined by light scattering and electron microscope analysisJ. Cai, N. Lu, and C. M. SorensenCite this: Langmuir 1993, 9, 11, 2861–2867Publication Date (Print):November 1, 1993Publication History Published online1 Ma…
A radiolytic push pull reduction method for the preparation of reasonably monodisperse silver particles 7.0 nm in diameter in aqueous solution is described. Slow particle growth is achieved in this method by simultaneously reducing Ag ions and partially oxidizing Ag n particles. The absorption spectrum of the particle…
Reversibility is the salient feature of the photochemical solid-state reaction of 1 to 2. Prerequisites, however, are first that the compound is irradiated into the long-wavelength flank of the absorption band of the chromophore (λ = 570 nm), and second that the product is not recrystallized before the thermal reverse…