Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of Chemically and Electrochemically Prepared Polyaniline Films. 2. Optical PropertiesDouglas Chinn, Joel DuBow, Jing Li, Jiri Janata, and Mira JosowiczCite this: Chem. Mater. 1995, 7, 8, 1510–1518Publication Date (Print):August 1, 1995Publication History Published…
Experimental data on the temperature and electric field dependence of the tilt angle and the electroclinic effect of the smectic-${\mathit{C}}^{\mathrm{*}}$ (Sm-${\mathit{C}}^{\mathrm{*}}$) and the smectic-${\mathit{A}}^{\mathrm{*}}$ (Sm-${\mathit{A}}^{\mathrm{*}}$) phases are presented which have been obtained by ele…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChanges in Geometries and Spin States of Thiolato-Schiff Base NiN2S2 Complexes Containing N,N'-Biphenyl BackbonesHenrik Frydendahl, Hans Toftlund, Jan Becher, Jennifer C. Dutton, Keith S. Murray, Lucille F. Taylor, Oren P. Anderson, and Edward R. T. TiekinkCite this: Inorg.…
Several transition metal carbides were examined as anodes for the internal direct‐oxidation of carbon in solid oxide fuel cells. Observed values of open‐circuit voltage of carbide anode cells were found to be in the same order as the oxygen potentials calculated for the respective metal carbide/metal oxide equilibrium…
Using the technique of hydrogen and deuterium substitution, the structure of water in concentrated lithium chloride aqueous solutions (LiCl⋅6H2O) is explored for the liquid, supercooled liquid, and glass states. It is found that changes in structure between the glass and supercooled states are minor, but that a major…
Scattering and absorption coefficients are presented from Monte Carlo simulations of electromagnetic wave propagation in a volume of densely packed, random dielectric, absorptive spheres. The particles are modeled both with and without a surface adhesion that causes them to form clustered groups. Results for scatterer…
Poly-β-hydroxybutyrate biosynthesis was studied in Alcaligenes eutrophus under various nutrient-limiting conditions. When the cells were cultivated in nitrogen-limited media, both the levels of NAD(P)H and the ratios of NAD(P)H/NAD(P) were higher than those under nitrogen-sufficient conditions. The specific poly-β-hyd…
Abstract Previous studies on one soil showed that silicone polymer (polydimethylsiloxane, or PDMS) degrades to dimethyl-silanediol (DMSD). This study examines PDMS degradation on seven U.S. soils differing in pH, % organic matter, texture, mineralogy, and geographic origin. Moist soils were amended with 350-centistoke…
Incorporation of La 3+ into the BaTiO 3 lattice was studied on samples of various composition, using quantitative WDS microanalysis (EPMA) in combination with scanning electron microscopy (SEM) and X‐ray powder diffractometry (XRPD). Direct determination of solid‐solution formulas by microanalysis supports the structu…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
The growth of single crystal β‐silicon nitride fibers (see Figure) several millimeters long through the application of self‐propagating high‐temperature synthesis is demonstrated. Advantages include the igh purity of the fibers obtained, the fact that the fibers are stable up to 2000°C, and the low cost of the SHS pro…
Abstract Fixed‐bed reactors with periodic flow reversal are used to carry out reactions with low exothermicity in an autothermal way. Contrary to conventional autothermal reactors, the preheating of the feed gas is accomplished by regenerative heat exchange between the gas and fixed bed. The feedback of heat and direc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleMechanistic Role of H2O and the Ligand in the Chemical Vapor Deposition of Cu, Cu2O, CuO, and Cu3N from Bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)copper(II)Jiri Pinkas, John C. Huffman, David V. Baxter, Malcolm H. Chisholm, and Kenneth G. CaultonCite this: Chem. Mater. 1995,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(alkyl thiophene-3-carboxylates). Synthesis and Characterization of Polythiophenes with a Carbonyl Group Directly Attached to the RingMartin Pomerantz, Hui Yang, and Yang ChengCite this: Macromolecules 1995, 28, 17, 5706–5708Publication Date (Print):August 1, 1995Publica…
Abstract The two types of highly-ordered oligo(3-hexylthiophene)s in head-to-head orientation, a series of α,ω-disubstituted oligothiophenes and a series of bis(dicyanomethylene)oligothienoquinonoids, were synthesized. The properties of these compounds are discussed on the basis of the electronic spectra and cyclic vo…
Abstract Binary blends of a reactive ethylene‐based terpolymer with polybutylene terephthalate (PBT) and with a liquid crystalline polyester (LCP) were studied to clarify the possible interactions between the blended polymers. The aim was to determine the suitability of the reactive terpolymer containing epoxy reactiv…
Limited information is available on inherent stabilities of four-chain-coils. We have developed a model system to study this folding motif using synthetic peptides derived from sequences contained in the tetramerization domain of Lac repressor. These peptides are tetrameric as judged by both gel filtration and sedimen…
An extension to the peaklist optimization procedure is proposed, in which one overall phase refinement cycle consists of tangent expansion, E-map, peaksearch and elimination of peaks to achieve a maximum correlation coefficient between E o and E c . This procedure appears to be able to solve large structures from rand…
Abstract An electroactive material with remarkable solubility, processibility as well as mechanical properties has been developed by complexation (thermal doping) of polyaniline (PANi) emeraldine base with dodecylbenzenesulfonic acid (DBSA) in the solid state. Isothermal treatment of such a mixture was found to promot…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTetranuclear Pentaammineruthenium Complexes Bridged by .pi.-Conjugated Tetracyano Ligands Related to TCNE: Syntheses and Spectroscopy of Different Oxidation StatesMichael Moscherosch, Eberhard Waldhoer, Herbert Binder, Wolfgang Kaim, and Jan FiedlerCite this: Inorg. Chem. 19…