Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.pi.-Conjugated Soluble Poly(aryleneethynylene) Type Polymers. Preparation by Palladium-Catalyzed Coupling Reaction, Nonlinear Optical Properties, Doping, and Chemical ReactivityTakakazu Yamamoto, Wataru Yamada, Masakazu Takagi, Kenichi Kizu, Tsukasa Maruyama, Naoki Ooba, Sa…
Effects of tranilast, N-(3,4-dimethoxycinnamoyl)anthranilic acid, on collagen synthesis in cultured human skin fibroblasts were studied. Tranilast was found to inhibit collagen synthesis in a dose-dependent manner to a maximum of 55% at 300 microM during 48 h of treatment; the synthesis of type I and type III collagen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic Properties Diagnostic for the Existence of Iron(II)-Iron(II) Bonds in Dinuclear Complexes Which Derive from Stepwise Insertion Reactions on Unsupported Iron-Aryl BondsAlain Klose, Euro Solari, Carlo Floriani, Angiola Chiesi-Villa, Corrado Rizzoli, and Nazzareno ReCi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Orientation in Rubbed Polyimide Alignment Layers Used for Liquid-Crystal DisplaysN. A. J. M. van Aerle and A. J. W. TolCite this: Macromolecules 1994, 27, 22, 6520–6526Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published i…
Crystals of (Na 1/2 Bi 1/2 )TiO 3 have grown by the flux technique and the Czochralski method. Nonstoichiometry, twin configurations, and long‐range cation ordering in the crystals have been investigated using X‐ray diffraction and an optical polarizing microscope. It has been found that nonstoichiometry was induced i…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution and Solid-State Characterization of Highly Rigid, Eight-Coordinate Lanthanide(III) Complexes of a Macrocyclic TetrabenzylphosphinateSilvio Aime, Andrei S. Batsanov, Mauro Botta, Judith A. K. Howard, David Parker, Kanthi Senanayake, and Gareth WilliamsCite this: Inor…
The effects of MgO on sintering and grain growth of alumina in the absence of any other impurities as well as in the presence of various amounts of CaO were investigated using ultrapure (>99.999%) alumina and sintering at 1900°C for 1 h in a clean contamination‐free condition. Critical concentrations of MgO require…
The resistance to pitting of a Fe‐17%Cr alloy in Cl − ‐containing solution ( 0.5 M H 2 SO 4 + 0.3 M NaCl ) and its relationship with the chemical composition of the passive film have been studied by electrochemical and x‐ray photoelectron spectroscopy analyses. Aging of the passive film in the acid solution without or…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUptake of Lipophilic Organic Cu, Cd, and Pb Complexes in the Coastal Diatom Thalassiosira weissflogiiJonathan T. Phinney and Kenneth W. BrulandCite this: Environ. Sci. Technol. 1994, 28, 11, 1781–1790Publication Date (Print):October 1, 1994Publication History Published onlin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered Structures of Block Copolymer/Homopolymer Mixtures. 5. Interplay of Macro- and Microphase TransitionsSatoshi Koizumi, Hirokazu Hasegawa, and Takeji HashimotoCite this: Macromolecules 1994, 27, 22, 6532–6540Publication Date (Print):October 1, 1994Publication History P…
Crystallographic and spectroscopic studies on galactose oxidase have shown that the active site involves a free radical on tyrosine 272, one of the ligands coordinated to the Cu2+ cofactor. A novel thioether bond between tyrosine 272 and cysteine 228, and a stacking tryptophan 290, over this bond, are features of the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT"Redox Tautomerism" in High-Valent Metal-oxo-aquo Complexes. Origin of the Oxygen Atom in Epoxidation Reactions Catalyzed by Water-Soluble MetalloporphyrinsJean Bernadou, Anne-Sylvie Fabiano, Anne Robert, and Bernard MeunierCite this: J. Am. Chem. Soc. 1994, 116, 20, 9375–93…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-Assembly in Two Dimensions: Surface Micelles and Domain Formation in MonolayersJacob IsraelachviliCite this: Langmuir 1994, 10, 10, 3774–3781Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://pub…
Frequency dispersions with chain length have been experimentally determined from Raman-scattering data published previously on a series of oligomers and polymers of paraphenylene, paraphenylene vinylene, thiophene, N-protected pyrrole, pyrrole, and furan. The dispersion behavior changes noticeably in the different ser…
Enzyme-induced liberation of components from seven different radiolabeled polyurethanes was monitored by radiolabel counting of the incubation solutions and product isolation by high performance liquid chromatography (HPLC). The polyurethanes were selected to reflect variations in the hard-segment chemistry, soft-segm…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyimides Derived from 2,2'-Bis(trifluoromethyl)-4,4'-diaminobiphenyl. 4. Optical Properties of Fluorinated Polyimides for Optoelectronic ComponentsTohru Matsuura, Shinji Ando, Shigekuni Sasaki, and Fumio YamamotoCite this: Macromolecules 1994, 27, 22, 6665–6670Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigations of the Hyperpolarizability in Organic Molecules from Dipolar to Octopolar SystemsT. Verbiest, K. Clays, C. Samyn, J. Wolff, D. Reinhoudt, and A. PersoonsCite this: J. Am. Chem. Soc. 1994, 116, 20, 9320–9323Publication Date (Print):October 1, 1994Publication Hi…
Previously described dendritic and hyperbranched polyesters and a new linear polyester obtained by polymerization of 3-hydroxy-5-(t-butyldimethylsilyloxy)benzoic acid, each based on the 3,5-dihydroxybenzoic acid building block, were used in the study of differences in chemical and physical properties between the three…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactions of Copper Group Cluster Anions with Oxygen and Carbon MonoxideTaeck Hong Lee and Kent M. ErvinCite this: J. Phys. Chem. 1994, 98, 40, 10023–10031Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994ht…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of a Poly(ethylene oxide)-Poly(propylene oxide) Triblock Copolymer (EO27-PO39-EO27) in Aqueous SolutionOtto Glatter, Guenther Scherf, Karin Schillen, and Wyn BrownCite this: Macromolecules 1994, 27, 21, 6046–6054Publication Date (Print):October 1, 1994Public…