Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Novel Reactive Polymeric Micelle with Aldehyde Groups on Its SurfaceCarmen Scholz, Michihiro Iijima, Yukio Nagasaki, and Kazunori KataokaCite this: Macromolecules 1995, 28, 21, 7295–7297Publication Date (Print):October 1, 1995Publication History Published online1 May 2002P…
A high-resolution in situ SEM (scanning electron microscope) has been configured for real time comparison studies of the electromigration characteristics of Cu and Cu(Sn) alloys. Drift velocity test structures were fabricated and used to simulate the Cu line/W via structure in the multilevel interconnects. Electromigr…
Unlike 7Li magic-angle spinning nuclear magnetic resonance (MAS NMR) spectra, 6Li MAS NMR spectra of silicates are dominated by chemical shift effects, often have a very high resolution and hence can provide significant structural information. In this study we demonstrate a good correlation between 6Li isotropic chemi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign of chemoresistive sensory materials: polythiophene-based pseudopolyrotaxanesMichael J. Marsella, Patrick J. Carroll, and Timothy M. SwagerCite this: J. Am. Chem. Soc. 1995, 117, 39, 9832–9841Publication Date (Print):October 1, 1995Publication History Published online1…
RATIONALE AND OBJECTIVES: Target-specific magnetic resonance (MR) contrast agents are being developed to improve the accuracy of MR imaging. The purpose of this study was to determine the mechanism of cell uptake, and modes of intracellular trafficking of a prototypical iron oxide label (RMA) used in the synthesis of…
To a given tiling a noncommutative space and the corresponding C*-algebra are constructed. This includes the definition of a topology on the groupoid induced by translations of the tiling. The algebra is also the algebra of observables for discrete models of one or many particle systems on the tiling or its periodic i…
Structural phase transitions ('type 0') in which there is no change of space group or of the occupied Wyckoff sites contrast with others in which diffusionless transformation can occur in a single step between higher-and lower-symmetry space groups (type I), through a low-symmetry transition state between relatively h…
We have developed low temperature nonaqueous solution methods as well as low power plasma ashing for the degradation of the organic matrix of bone power which have permitted us to obtain bone crystals essentially free of organic matrix constituents without any significant change in their composition, overall structure…
The formation of platinum sols (〈d〉 = 1.5-4 nm) in a methanol-water mixture by methanol reduction of ionic platinum in the presence of steric stabilizer poly(vinylpyrrolidone) has been studied by transmission electron microscopy and UV-visible spectrophotometry. A high concentration of chloride ions present in the rea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLipase-Catalyzed Ring-Opening Polymerization of 12-DodecanolideHiroshi Uyama, Kazuhiro Takeya, Norio Hoshi, and Shiro KobayashiCite this: Macromolecules 1995, 28, 21, 7046–7050Publication Date (Print):October 1, 1995Publication History Published online1 May 2002Published ini…
A model of the formation of a p-type surface conductive layer on deposited diamond films is proposed. According to the model, the ionization of acid in water produces oxonium ion ( H 3 O + ) which reacts with hydrogen on diamond films and causes the creation of holes in diamond films. The model also explains the disap…
The vibrational and relaxational dynamics of glycerol has been measured by incoherent neutron scattering for energy transfers from some 10 \ensuremath{\mu}eV to several 10 meV, and for temperatures from 4 to 413 K. On heating towards and above the glass transition, scattering from low-frequency vibrations shows an uns…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Characterization of Ultrafine Metal Particles in Ethanol by UV Irradiation Using a PhotoinitiatorTetsuyuki Itakura, Kanjiro Torigoe, and Kunio EsumiCite this: Langmuir 1995, 11, 10, 4129–4134Publication Date (Print):October 1, 1995Publication History Publishe…
Theoretically, lyotropic behavior of flexible polymers can be induced by associating the polymers with a large amount of long-tail surfactants leading to bottle-brush type conformations in suitable solvents. To address this and related questions, complexes of poly(2-vinylpyridine) (P2VP) and poly(4-vinylpyridine) (P4V…
Native thermolysin binds a single catalytically essential zinc ion that is tetrahedrally coordinated by three protein ligands and a water molecule. During catalysis the zinc ligation is thought to change from fourfold to fivefold. Substitution of the active-site zinc with Cd2+, Mn2+, Fe2+, and Co2+ alters the catalyti…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular-Level Processing of Conjugated Polymers. 2. Layer-by-Layer Manipulation of In-Situ Polymerized p-Type Doped Conducting PolymersA. C. Fou and M. F. RubnerCite this: Macromolecules 1995, 28, 21, 7115–7120Publication Date (Print):October 1, 1995Publication History Pub…
Nanocrystals of group-IV semiconductor materials (Si, Ge, and SiGe) have been fabricated in SiO2 by ion implantation and subsequent thermal annealing. The microstructure of these nanocrystals has been studied by transmission electron microscopy. Critical influences of the annealing temperatures and implantation doses…
Effective tailoring of pore sizes in mesoporous molecular sieves (see Figure) has been achieved by a novel method involving the restructuring of the mesopores under mild aqueous conditions. A studyis reported aimed at elucidating the underlying chemistry. It is suggested that further investigation could provide insigh…
A method is presented to facilitate the isolation of mutations in plant genes, which requires knowledge of the target gene or protein sequence, and is independent of mutant phenotype. The polymerase chain reaction was used to amplify the junctions between a T-DNA insert and the gene of interest from pools of mutant pl…
The authors report $^{13}\mathrm{C}$ NMR spin-lattice relaxation rates 1/${\mathit{T}}_{1}$ and Knight shifts ${\mathit{K}}_{\mathit{S}}$ in the quasi-two-dimensional organic superconductor \ensuremath{\kappa}-(ET${)}_{2}$Cu[N(CN${)}_{2}$]Br (${\mathit{T}}_{\mathit{c}}$=11.6 K), for an aligned single crystal. The norm…