Materials Literature
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New determinations of the surface-tension-anisotropy parameter ${\mathrm{\ensuremath{\varepsilon}}}_{4}$ of succinonitrile (SCN), pivalic acid (PVA), and a PVA--1%-ethanol mixture are reported. Effects of temperature gradients and crystal orientation are analyzed in detail. The experiments utilized numerical interpola…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of organosilicon compounds. 293. Preparation, characterization, and crystal structures of octasilacubanes and octagermacubanesAkira Sekiguchi, Tetsuo Yatabe, Hirokazu Kamatani, Chizuko Kabuto, and Hideki SakuraiCite this: J. Am. Chem. Soc. 1992, 114, 15, 6260–6262P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThird-order optical nonlinearities of bis(phthalocyanines)James S. Shirk, J. R. Lindle, F. J. Bartoli, and Michael E. BoyleCite this: J. Phys. Chem. 1992, 96, 14, 5847–5852Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1…
The preparation, the electrical and rheological properties as well as the electrochemical behavior of gel electrolytes made of (PC) electrolyte mixed with poly(methylmethacrylate) polymer (PMMA) as a stiffener are described. The addition of PMMA in various proportions to (M)‐PC electrolyte considerably increases the v…
Passive films on stainless steels, which are known to exhibit a significantly different susceptibility to pitting corrosion (DIN 1.4301, 1.4439, 1.4529), were examined in situ by photoelectrochemistry. The results show that the photoresponse is determined by the defects in the electronic structure of the films leading…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilica-pillared derivatives of H+-magadiite, a crystalline hydrated silicaJames S. Dailey and Thomas J. PinnavaiaCite this: Chem. Mater. 1992, 4, 4, 855–863Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https:/…
Electron-matter interaction is described by a Monte Carlo procedure in which the mean free path is calculated by using a screened Rutherford formula, while energy loss is computed by using the Kanaya and Okayama semiempirical expression. Monte Carlo simulation results of the backscattering coefficient have been compar…
Abstract Compatibilization of polyamide 6/isotactic polypropylene blends was investigated by mechanical, morphological, thermal, and rheometrical methods. The primary objective was to obtain blends combining the desirable properties of the two components. Four compatibilizers including maleic anhydride, fumaric acid,…
The passive state of chromium has been examined in 1 M H 2 SO 4 by a variety of electrochemical techniques and x‐ray photoelectron spectroscopy. The potentiodynamic behavior of the passive electrode may be described by high‐field film growth kinetics. The passivating oxide film is 5–25 Å thick and consists of chromic…
To examine the mechanism of film deposition in a planar rf CH4 discharge plasma, measurements were made of the spatial distributions of the deposition rate and optical emission intensity along the discharge axis between parallel electrodes. Optical-absorption properties of the deposited carbon films were also measured…
The suitability of polymeric biomaterials as surfaces for the attachment and growth of cells has often been investigated in tissue culture. In this study the contribution that adsorption of serum fibronectin (Fn) or vitronectin (Vn) make to the attachment and spreading of fibroblast cells during the first 90 min follo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign of chromophoric molecular assemblies with large second-order optical nonlinearities. A theoretical analysis of the role of intermolecular interactionsSanto Di Bella, Mark A. Ratner, and Tobin J. MarksCite this: J. Am. Chem. Soc. 1992, 114, 14, 5842–5849Publication Dat…
Duplex (two‐phase) microstructures and laminar composites offer some unique opportunities for improving the room‐temperature mechanical reliability (e.g., flaw tolerance) and the high‐temperature microstructural stability (e.g., resistance to grain growth and creep damage) of structural ceramic materials. Examples ill…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of lanthanide [Ln(L)]2 complexes of N4O3 amine phenol ligands with phenolate oxygen bridges: evidence for very weak magnetic exchange between lanthanide ionsShuang Liu, Lucio Gelmini, Steven J. Rettig, Robert C. Thompson, and Chris OrvigCite th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of a thermotropic nematic liquid crystalline dendrimeric polymerVirgil Percec and Masaya KawasumiCite this: Macromolecules 1992, 25, 15, 3843–3850Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published iniss…
Low energy electron diffraction (LEED) has been used to study the effects of atomic and molecular species of hydrogen and oxygen on the reconstructed C(100)-(2×1) surface. Thermal desorption spectroscopy was also used to study desorption products and kinetics from hydrogenated and oxygenated surfaces. Atomic hydrogen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleMechanism of alkene epoxidation by iron, chromium, and manganese higher valent oxo-metalloporphyrinsDrazen Ostovic and Thomas C. BruiceCite this: Acc. Chem. Res. 1992, 25, 7, 314–320Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron transfer in bis-porphyrin donor-acceptor compounds with polyphenylene spacers shows a weak distance dependenceAnna Helms, David Heiler, and George McLendonCite this: J. Am. Chem. Soc. 1992, 114, 15, 6227–6238Publication Date (Print):July 1, 1992Publication History P…