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Article MERCURY COORDINATION COMPOUNDS: CLASSIFICATION AND ANALYSIS OF CRYSTALLOGRAPHICAL AND STRUCTURAL DATA was published on December 1, 1994 in the journal Main Group Metal Chemistry (volume 17, issue 11-12).
Abstract The catalyst system Nd(octanoate) 3 /Al 2 Et 3 Cl 3 /Al(iBu) 3 (Et: ethyl, iBu: isobutyl) in heptane for the polymerization of butadiene and isoprene was examined. The concentration of Al 2 Et 3 Cl 3 , Al(iBu) 3 and the order of addition of the components were varied. The results of the determination of conve…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly[(ether ether sulfone)-co-(ether sulfone)]/Silicon Oxide Microcomposites Produced via the Sol-Gel Reaction for TetraethylorthosilicateKenneth A. Mauritz and Redford JuCite this: Chem. Mater. 1994, 6, 12, 2269–2278Publication Date (Print):December 1, 1994Publication Histo…
Evidence for the existence of quantum size effects in amorphous diamond-like carbon superlattice structures from optical and electronic measurements together with theoretical predictions are reported. A `blue shift' in the optical gap is shown to occur with decreasing well width from which an effective mass for the el…
A Monte Carlo simulation code has been developed to describe the x-ray generation in a specimen for electron probe microanalysis (EPMA), enabling x-ray spectra observed by EPMA to be reproduced theoretically. The Monte Carlo simulation is based on the use of the Mott cross section and Bethe stopping power equation in…
Experimental solubilities are reported at 26.0°C for pyrene dissolved in twenty different organic nonelectrolyte solvents containing ether-, ester-, chloro-, hydroxy-, and methyl-functional groups. Results of these measurements, combined with our previously published pyrene solubility data in benzene, dibutyl ether, 1…
The phase behavior of diblock copolymers near the order-disorder transition is studied using transmission electron microscopy, small-angle neutron scattering (SANS) and dynamical mechanical spectroscopy. For a series of polyolefin diblocks with volume fraction, f1, of the block with the larger segment length in the ra…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCoordination Chemistry on Surfaces: A New Method To Graft Rhenium(VII) Oxide on Highly Dehydroxylated OxidesSusannah L. Scott and Jean-Marie BassetCite this: J. Am. Chem. Soc. 1994, 116, 26, 12069–12070Publication Date (Print):December 1, 1994Publication History Published on…
Cross-flow microfiltration was shown to retain Saccharomyces cerevisiae biomass utilized for heavy metal bioaccumulation. The passage of metal-laden influent through a series of sequential bioaccumulation systems allowed for further reductions in the levels of copper, cadmium, and cobalt in the final effluent than tha…
The powders of aluminum metal and natural graphite mixed in various molar ratios (Al/C = 7/0–0/7) were ground in a planetary ball mill. When the mixtures thus activated mechanically were exposed to air, exothermic reactions spontaneously occurred in two successive steps, evolving red heat initially and then white heat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCsSmGeS4: A Novel Layered Mixed-Metal Sulfide Crystallizing in the Noncentrosymmetric Space Group P212121Cordelia K. Bucher and Shiou-Jyh HwuCite this: Inorg. Chem. 1994, 33, 25, 5831–5835Publication Date (Print):December 1, 1994Publication History Published online1 May 2002…
Polystyrene-polyisobutylene-polystyrene triblock copolymer thermoplastic elastomers have been synthesized by living carbocationic sequential copolymerization using the tert-butyl dicumyl chloride/TiCl4/methylcyclohexane:methyl chloride (60:40 v:v)/ −80°C system in the presence of the proton trap 2,6-di-tert-butylpyrid…
Abstract This article describes a study on the reactive compatibilization of nylon 6 (N6) and polypropylene (PP) blends through a functionalized PP. A graft copolymer was formed in ‐ situ by reacting an acid modified PP with N6 during blend compounding. The compatibilization reactions are studied in detail. Kinetics w…
Abstract Free volume ideas have been employed extensively in the interpretation of equilibrium processes and as a measure of molecular mobility. More recently, the vacancy fraction h , defined in our hole theory, has served to provide a link between diverse processes. This raises a question regarding the relation betw…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Oxidation of Dichloromethane, Chloroform, and Their Binary Mixtures over a Platinum Alumina CatalystDouglas M. Papenmeier and Joseph A. RossinCite this: Ind. Eng. Chem. Res. 1994, 33, 12, 3094–3103Publication Date (Print):December 1, 1994Publication History Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Novel Optically Active Polymethacrylamide Having L-Leucine Structure in the Side ChainFumio Sanda, Masafumi Nakamura, Takeshi Endo, Toshikazu Takata, and Hiroshi HandaCite this: Macromolecules 1994, 27, 26, 7928–7929Publication Date (Print):December 1, 1994Publi…
Zeolites as potential luminescent materials is a subject that has received little attention previously. The optical properties–UV emission and reflectance/absorbance spectra–of zeolites X and Y prepared with various degrees of Ce doping are described and an interpretation of the results is proposed based on the occupa…
The gel transformations and subsequent crystallization that occur in the precursor reaction mixture of silicalite were investigated using simultaneous small- and wide-angle X-ray scattering (SAXS–WAXS). The SAXS–WAXS measurements, together with the use of a high flux of synchrotron radiation and a newly developed high…
Penta- and hexa-substituted phenanthrenes and penta-substituted benzo[c]-phenanthrenes have been synthesized; these exhibit columnar phases and are electrically switchable when bearing chiral side chains. The liquid crystalline and electro-optical properties are described. A strong tri-state switching behaviour is obs…
N-Myristyl transferase (Nmt) catalyzes attachment of myristate onto the N terminus of suitable proteins. In order to identify amino acids important for catalytic functions, human Nmt and mutants representing all six conserved cysteine and histidine residues (Cys-169, Cys-214, His-131, His-171, His-218, and His-293) we…