Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLow-Temperature Reactions of Atomic Cobalt with CH2N2, CH4, CH3D, CH2D2, CHD3, CD4, H2, D2, and HDW. E. Billups, Sou-Chan Chang, Robert H. Hauge, and John L. MargraveCite this: J. Am. Chem. Soc. 1995, 117, 4, 1387–1392Publication Date (Print):February 1, 1995Publication Hist…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the Formation of Tetracoordinate Boron in Rubidium Borate GlassesR. E. Youngman and J. W. ZwanzigerCite this: J. Am. Chem. Soc. 1995, 117, 4, 1397–1402Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995h…
Abstract The electrooxidation behavior of iodide, thiocyanate, and cyanide on poly(vinylferrocenium)‐coated Pt electrodes was investigated using cyclic voltammetry and differential pulse anodic stripping voltammetry. IR and UV spectroscopic data, and differential scanning calorimetry (DSC) measurements indicated that…
A family of mesomorphic bis(alkoxystilbazole) silver(I) dodecylsulphate and octylsulphate complexes has been studied by X-ray scattering in their various mesophases. In particular, many of the complexes exhibit a thermotropic cubic mesophase and, for one example, a monodomain was obtained allowing the space group to b…
We report on the crystallization behaviour of amorphous Si(a-Si) in a-Si/Ag/a-Si trilayer and a-Si/Ag multilayer systems using in situ transmission electron microscopy (TEM) and differential scanning calorimetry. The crystallization temperature of a-Si in these Si/Ag layered systems is 385–415°C, about 200°C lower tha…
Physical properties of Ag2S-As2S3 glassy alloys have been studied as a function of the Ag atomic concentration x. With an increase in x, the optical-absorption edge exhibits a red shift, while the steepness of the Urbach tail changes little. In the glasses with x≥15, the electrical conductivity is governed by Ag+ ioni…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyurethane Cationomers with Pendant Trimethylammonium Groups. 1. Fourier Transform Infrared Temperature StudiesR. J. Goddard and S. L. CooperCite this: Macromolecules 1995, 28, 5, 1390–1400Publication Date (Print):February 1, 1995Publication History Published online1 May 2…
Enolase (2-phospho-D-glycerate hydrolase; EC 4.2.1.11) from the hyperthermophilic bacterium Thermotoga maritima was purified to homogeneity. The N-terminal 25 amino acids of the enzyme reveal a high degree of similarity to enolases from other sources. As shown by sedimentation analysis and gel-permeation chromatograph…
All articles of this category Epoxidation of trisubstituted olefins using Mn-salen complex ( 1 ) as a catalyst proceeds with high enantioselectivity and the sense of asymmetric induction observed in this reaction could be rationalized mainly by electronic repulsion between salen-benzene ring and unsaturated olefinic s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAlcohol/methylaluminum diphenolate systems as novel, versatile initiators for synthesis of narrow molecular weight distribution polyester and polycarbonateMasaki Akatsuka, Takuzo Aida, and Shohei InoueCite this: Macromolecules 1995, 28, 4, 1320–1322Publication Date (Print):F…
Bacterial polyesters such as polyhydroxybutyrate (PHB) or polyhydroxyalkanoates (PHAs) have to pass the following requirements to be accepted on a large scale: (i) they have to fulfil an urgent market need: (ii) they require that new and efficient composting systems are installed in urban areas; (iii) they have to com…
Using simple statistical mechanical models, we investigate secondary structure formation in the molten globule state of a helix-forming heteropolymer. The theory based on the helix-coil model of Bragg and Zimm correctly treats the one-dimensional aspect of the helix-coil transition but has been modified to include the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure-Property Correlations of Atomistic and Coarse-Grained Models of Polymer MeltsK. S. Schweizer, E. F. David, C. Singh, J. G. Curro, and J. J. RajasekaranCite this: Macromolecules 1995, 28, 5, 1528–1540Publication Date (Print):February 1, 1995Publication History Publi…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic Light Scattering from Dilute, Semidilute, and Concentrated Block Copolymer SolutionsC. Pan, W. Maurer, Z. Liu, T. P. Lodge, P. Stepanek, E. D. von Meerwall, and H. WatanabeCite this: Macromolecules 1995, 28, 5, 1643–1653Publication Date (Print):February 1, 1995Public…
The rheological behaviour of the smectic A phase of the thermotropic liquid crystal 4-cyano-4'-octylbiphenyl (8CB) is examined. X-ray scattering studies under shear flow were performed to probe changes of structures. We found that in a certain range of temperatures two states of orientation of lamellae exist. These tw…
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The ac small‐signal response of La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) is examined via lumped parameter/complex plane analysis (LP/CPA) technique. The ac data, acquired in the frequency range 10 − 1 ≤ f ≤ 10 6 Hz , are used to establish the role of ionic contribution in the LSCF material system using a two‐terminal bl…
To improve the surface blood compatibility on a cellulose hemodialysis membrane, a blood compatible polymer with a phospholipid polar group, poly[2-methacryloyloxyethyl phosphorylcholine(MPC)], was immobilized on the surface through the coating of a water-soluble cellulose grafted with poly(MPC) (MPC-grafted cellulose…
The changes in tensile strength, elongation at break, and high strain modulus of dermal sheep collagen (DSC) during in vitro degradation using bacterial collagenase were studied. The changes in mechanical properties were compared with the change in weight of the samples as a function of degradation time. DSC was cross…