Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Polyether Ligands on Stabilities and Mass Transport Properties of a Series of Gadolinium(III) .beta.-Diketonate ComplexesIan Baxter, Simon R. Drake, Michael B. Hursthouse, K. M. Abdul Malik, John McAleese, David J. Otway, and John C. PlakatourasCite this: Inorg. Ch…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Bis(ether anhydride)s for Poly(ether imide)s having 1,2-Linked Units by Nitrodisplacement with Catechol DerivativesG. C. Eastmond and J. PaprotnyCite this: Macromolecules 1995, 28, 7, 2140–2146Publication Date (Print):March 1, 1995Publication History Published o…
The affine transformation model---formulated for ellipsoidal particles with axis ratio Q and previously used for the calculation of the viscous properties of nematic liquid crystals with perfect orientation order---is generalized to realistic uniaxial phases with imperfect order (Maier-Saupe order parmeter S1). For th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplications of Organic Bridged Polysilsesquioxane Xerogels to Nonlinear Optical Materials by the Sol-Gel MethodHenry W. Jr. Oviatt, Kenneth J. Shea, Srinath Kalluri, Yongqiang Shi, William H. Steier, and Larry R. DaltonCite this: Chem. Mater. 1995, 7, 3, 493–498Publication…
Processible organic materials exhibiting high charge carrier mobilities are a step closer with the development of liquid crystalline photoconducting materials. The mobilities have been measured in various phase regions over the temperature range from – 100 to 165°C and the influence of different annealing conditions a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlycoconjugated Porphyrins. 3. Synthesis of Flat Amphiphilic Mixed meso-(Glycosylated aryl)arylporphyrins and Mixed meso-(Glycosylated aryl)alkylporphyrins Bearing Some Mono- and Disaccharide GroupsDalila Oulmi, Philippe Maillard, Jean-Luc Guerquin-Kern, Christiane Huel, and…
Summary Alumina/SiC nanocomposites were produced by mechanical mixture of commercial powders. The preparation steps involved the vigorous mixing of the powders and drying under conditions where the homogeneous mixture was kept stable. Pressureless sintering of die‐pressed powders achieved reasonable densities (∼97% th…
The temperature at which collagen denatures from a triple helix to a random coil structure is a useful measure of the degree of crosslinking. A new multi-sample denaturation temperature tester (DTT) has been constructed for rapid determination of the collagen denaturation temperature of natural tissues and collagenous…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelective extraction of mercury with ionizable crown ethers in supercritical carbon dioxideShaofen. Wang, Sadik. Elshani, and C. M. WaiCite this: Anal. Chem. 1995, 67, 5, 919–923Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published ini…
Quantitative determination of phase abundances using X-ray powder diffraction is a technique in wide use today. Of the various methods employed, the Chung, or RIR method, is one of the most common because it can provide reliable results for all sample types. However, improvements can be made to the Chung method of ana…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic Transition and Structural Asymmetrization in the Ferromagnetic Compound [{Ni2(Medpt)2(N3)2}(.mu.-(1,1-N3)2)], an Example of a Dynamic Second-Order Jahn-Teller EffectAlbert Escuer, Ramon Vicente, Joan Ribas, and Xavier SolansCite this: Inorg. Chem. 1995, 34, 7, 1793–…
Condensed phases of Langmuir monolayers are treated in the framework of the Landau theory of phase transitions as a result of successive ordering of the hexatic phase. All types of ordering allowed by symmetry and the couplings between them are described. The phase diagrams and x-ray structural data on monolayers of v…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyoxoanion-Supported Catalyst Precursors. Synthesis and Characterization of the Iridium(I) and Rhodium(I) Precatalysts [(n-C4H9)4N]5Na3[(1,5-COD)M.cntdot.P2W15Nb3O62] (M = Ir, Rh)Matthias Pohl, David K. Lyon, Noritaka Mizuno, Kenji Nomiya, and Richard G. FinkeCite this: In…
Journal of physical chemistry
The correlation between the molecular structure and inhibitor efficiency (Ei) of triamines was investigated. The group-contribution approach was adapted to account for Langmuir- and Frumkin-type inhibition. The group contributions (aj) were obtained using a nonlinear regression technique. It was assumed that corrosion…
As part of ongoing studies in polyurethane biostability and biodegradation, we have investigated an in vitro system to test strained poly(etherurethane urea) (PEUU). Recently, we utilized this system to reproduce in vivo stress cracking in strained Pellethane. In this study, strained PEUU was tested to determine wheth…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFabrication of Patterned, Electrically Conducting Polypyrrole Using a Self-Assembled Monolayer: A Route to All-Organic CircuitsChristopher B. Gorman, Hans A. Biebuyck, and George M. WhitesidesCite this: Chem. Mater. 1995, 7, 3, 526–529Publication Date (Print):March 1, 1995Pu…
Several absorbance peaks in electrically unwound, uniform smectic-${\mathit{C}}^{\mathrm{*}}$ (Sm-${\mathit{C}}^{\mathrm{*}}$) were studied as a function of polarization direction of incident ir radiation by using homogeneously and homeotropically aligned cells of four antiferroelectric liquid crystals. Contrary to th…
Abstract Aging experiments using the NIST (National Institute of Standards and Technology) torsional dilatometer have been performed in which the temperature of an isothermally equilibrated epoxy glass was abruptly changed to a new temperature T 0 and the evolution of the volume and torsional relaxation responses reco…
We report direct femtosecond measurements of the dynamics of photoinduced electrons at the liquid–metal interface produced by exciting the surface plasmon band of aqueous silver colloidal particles. The electron plasma resonance created initially dephases into individually excited electrons in less than 150 fs. This i…