Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase transformations of liquid crystalline side-chain oligomersH. Stevens, G. Rehage, and H. FinkelmannCite this: Macromolecules 1984, 17, 4, 851–856Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Published inissue 1 April 1984https://pub…
Alkali metals adsorbed on transition metal surfaces do not only change the electronic properties of these metals but alter also their chemical reactivity. This effect is well known in heterogeneous catalysis as the promotion of metallic catalysts by alkali additives. The more fundamental physics of this effect is bein…
Lower critical solution temperature (LCST) behavior in polymer blends is shown to be the result of the compressible nature of the system, the directional-specific character of the intermolecular interactions, or a combination of both. Certain random copolymer-homopolymer blends are examples of the first possibility. T…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRedox conduction in single and bilayer films of redox polymerP. G. Pickup, W. Kutner, C. R. Leidner, and Royce W. MurrayCite this: J. Am. Chem. Soc. 1984, 106, 7, 1991–1998Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Published inissue 1…
A search has been made for regional differences in macromolecular synthesis in the axolotl embryo at a stage when the principal regions have become determined but terminal differentiation has not yet begun. The epidermis of the neurula makes a number of abundant proteins which are not made elsewhere. Some of these are…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConcentration dependent relaxation times of linear polymers in dilute solutionsM. MuthukumarCite this: Macromolecules 1984, 17, 4, 971–973Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Published inissue 1 April 1984https://pubs.acs.org/do…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOne- and two-electron reduction of aluminum and tin pyridylporphyrins. A kinetic spectrophotometric studyS. Baral, P. Hambright, and P. NetaCite this: J. Phys. Chem. 1984, 88, 8, 1595–1600Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Pub…
Abstract Bulk mineralogy, clay fraction mineralogy and layer ratio in interstratified illite-smectite were studied in three Upper Miocene profiles, up to 200 m deep and representing very low sedimentation rates (∼80 mm/10 3 yr) with environments of sedimentation ranging from hypersaline (gypsum deposits) to brackish.…
Synthese hydrothermale a partir d'un melange stœchiometrique de Bi 2 O 3 et Bi 2 S 3 avec une solution NaOH a 10% comme solvant, a 673 K et 98 MPa. Cristallisation dans Pnnm avec a=3,874, b=11,916 et c=3,840 A, Z=2; affinement jusqu'a R=0,057. Antiprisme carre autour de Bi. Les liaisons Bi-O formant des tetraedres OBi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-sensitized photooxidation of protoporphyrin IX and related free-base porphyrins in natural and model membrane systems. Evidence for novel photooxidation pathways involving amino acidsMarianne Krieg and David G. WhittenCite this: J. Am. Chem. Soc. 1984, 106, 8, 2477–2479…
If the diffraction pattern from crystalline proteins is recorded with shorter wavelengths than is customary the radiation damage may be reduced and absorption corrections become less important.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of the chain conformation in uniaxially stretched poly(dimethylsiloxane) networks by small-angle neutron scatteringMichel Beltzung, Claude Picot, and Jean HerzCite this: Macromolecules 1984, 17, 4, 663–669Publication Date (Print):April 1, 1984Publication Histor…
As the largest CuS cluster known to date, [Cu12S8]4⊖ occupies a special position. It is the first copper(I) complex containing exclusively sulfidic ligands that has been isolated. The Ph4P salt is formed on reaction of CuCl2·2H2O with EtS⊖ and Li2S in the presence of Ph4PBr.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the complexation of iron(II) with ferrozineJames C. Thompsen and Horacio A. MottolaCite this: Anal. Chem. 1984, 56, 4, 755–757Publication Date (Print):April 1, 1984Publication History Published online1 May 2002Published inissue 1 April 1984https://pubs.acs.org/do…
Acetals that react with cotton to form cellulose crosslinks are derived from dialdehydes that can form five-or-six-membered tetrahydrofuran or tetrahydropyran rings. These aldehydes themselves are reactive to cotton, but the acetals do not form the aldehyde to react. The acetals were less reactive than the aldehydes a…
Metallic films are today used in various technological applications. The grain structures of these films influence many properties including the hardness, corrosion resistance, and the electrical conductivity reactivity of thin films in electrical devices. It is therefore important to understand how the films grow and…
The angular dependences of the sputter yield of (100) single crystal diamond under argon and oxygen ion beams were investigated. For argon ion beams a large increase in the sputter yield was observed as the angle of incidence was increased from the normal, with a maximum occurring at approximately 60° from the normal.…
Absolute differential cross sections (DCS's) for electron-impact excitation of the lowest forty electronic levels in atomic neon have been determined for incident electron energies of 30 and 50 eV, for the four lowest levels at 25 eV, and two levels at 100 eV. The cross sections for these forty electronic levels are g…
Lead–oxygen compounds and the exposures of clean polycrystalline Pb0 to O2, H2O, and air at various temperatures have been studied with x-ray photoelectron (XPS) and electron energy loss (EELS) spectroscopies. Results indicate that the shape of the Auger O KVV lines and EELS are sufficiently different to distinguish P…
Abstract X‐ray analyses of methylene‐bis(4)phenyl isocynate(MDI)/diol/poly(tetramethylene adipate) polyurethane elastomers prepared using hexanediol (HDO), butanediol (BDO), and propanediol (PDO) point to the development of a second crystalline structure in the hard segments as a result of thermal elongation and annea…