Robert Raja、Gopinathan Sankar、John Meurig Thomas2001-07-31Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTBifunctional Molecular Sieve Catalysts for the Benign Ammoximation of Cyclohexanone: One-Step, Solvent-Free Production of Oxime and ε-Caprolactam with a Mixture of Air and AmmoniaRobert Raja, Gopinathan Sankar, and John Meurig ThomasView Author Information Davy Faraday…
Covalent Organic Framework ApplicationsIonic liquids properties and applicationsNanomaterials for catalytic reactions
J. A. Alonso、M. J. Martínez‐Lope、M. T. Casáis 等 6 位作者2001-07-31Physical review. B, Condensed matter
The structural changes of polycrystalline $R{\mathrm{NiO}}_{3}$ perovskites $(R=\mathrm{Ho},$ Y, Er, and Lu, prepared under high-oxygen pressure) across the metal-insulator (MI) transition ${(T}_{\mathrm{MI}}$ ranging between 573 and 600 K) have been studied by high-resolution neutron- and synchrotron diffraction tech…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsThermal Expansion and Ionic Conductivity
Tracey Keeling-Tucker、John D. Brennan2001-07-31Chemistry of Materials
The use of steady-state and time-resolved fluorescence spectroscopy to probe the internal microenvironment of sol−gel-derived organic−inorganic nanocomposites formed from alkoxysilane precursors is reviewed. The review focuses on the use of small organic probes and fluorescent biomolecules that provide information on…
Porphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent MaterialsMesoporous Materials and Catalysis
Prasert Sangsuwan、Joaquín Orejas、Jorge E. Gatica 等 5 位作者2001-07-31Industrial & Engineering Chemistry Research
Exothermic reactions between a porous matrix and an infiltrating melt provide a more economic alternative for synthesizing many ceramics, intermetallics, and composites. It has recently been demonstrated that infiltration of cast microporous carbon preforms by silicon melt can be used to fabricate high-density, nearly…
Advanced ceramic materials synthesisHeat and Mass Transfer in Porous MediaAluminum Alloys Composites Properties
Peter H. M. Budzelaar、Bas de Bruin、A.W. Gal 等 5 位作者2001-07-31Inorganic Chemistry
A series of complexes ML2(x+) (M = Mn-Zn, L = 2,6-bis(iminomethyl)pyridine) was investigated by theoretical methods. Electron transfer from the metal "t(2g)" orbitals to the ligand pi orbitals is reflected in the elongation of ligand C-N bonds and shortening of the C(py)-C(imine) bonds. Using zinc complexes as referen…
Metal complexes synthesis and propertiesMetal-Catalyzed Oxygenation MechanismsMagnetism in coordination complexes
Takayuki Ichikawa、Mikio Ymamoto、Seiji Higashitani 等 4 位作者2001-07-31arXiv
Sound propagation in a Fermi liquid with impurities is studied using the Landau-Boltzmann equation and the result is compared with a recent experiment in liquid ${}^3$He in aerogel by Northwestern University group. The sound absorption calculated using the fixed impurity model is a few orders of magnitude larger than…
Materials Science
M. Ahr、M. Biehl、T. Volkmann2001-07-31arXiv
First, we present a two-dimensional lattice gas model with anisotropic interactions which explains the experimentally observed transition from a dominant c(2x2) ordering of the CdTe(001) surface to a local (2x1) arrangement of the Cd atoms as an equilibrium phase transition. Its analysis by means of transfer-matrix an…
Materials Sciencecond-mat.stat-mech
L. Hansen、D. Ferrand、G. Richter 等 10 位作者2001-07-31arXiv
We report on the MBE-growth and magnetotransport properties of p-type BeMnTe, a new ferromagnetic diluted magnetic semiconductor. BeMnTe thin film structures can be grown almost lattice matched to GaAs for Mn concentrations up to 10% using solid source MBE. A high p-type doping with nitrogen can be achieved by using a…
Materials Science
Paolo Politi、Claudio Castellano2001-07-31arXiv
The epitaxial growth process of a high symmetry surface occurs because adatoms meet and nucleate new islands, that eventually coalesce and complete atomic layers. During multilayer growth, nucleation usually takes place on top of terraces where the geometry of the diffusion process is well defined: We have studied in…
cond-mat.stat-mechMaterials Science
Yi‐Chang Liu、Bao‐Tsan Ko、Chu‐Chieh Lin2001-07-31Macromolecules
A novel ligand, 2,2‘-methylenebis(4,6-di(1-methyl-1-phenylethyl)phenol) (MMPEP-H 2 ) ( 1 ), has been prepared by the reaction of 2,4-bis(α,α-dimethylbenzyl)phenol with formaldehyde in the presence of a catalytic amount of benzenesulfonic acid. Further reaction of compound 1 with Me 3 Al in diethyl ether produces a fou…
biodegradable polymer synthesis and propertiesSilicone and Siloxane ChemistryCarbon dioxide utilization in catalysis
Bo Sun Lee、Byoung Chul Chun、Yong‐Chan Chung 等 5 位作者2001-07-31OpenAlex
Shape memory polyurethane (PU) block copolymers composed of 4,4‘-methylenebis(phenylisocyanate), poly(tetramethylene glycol), and 1,4-butanediol as a chain extender were synthesized by a two-step process. FT-IR spectra showed that carbonyl peak appearing at 1700 cm -1 increased with higher hard segment content, wherea…
Polymer composites and self-healingSynthetic Organic Chemistry MethodsMarine Sponges and Natural Products
V. Yu. Dolmatov2001-07-31OpenAlex
Published data on the properties of a novel nanomaterial viz., detonation synthesis ultradispersed diamonds (UDD), are summarised and systematised for the first time. Certain properties of UDD synthesised under different conditions are compared. Particular attention is drawn to substantiation of the cluster model of U…
Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchLaser-Ablation Synthesis of Nanoparticles
Emanuele Ostuni、Robert Chapman、R. Erik Holmlin 等 5 位作者2001-07-31OpenAlex
This paper describes the use of surface plasmon resonance (SPR) spectroscopy and self-assembled monolayers (SAMs) to determine the characteristics of functional groups that give surfaces the ability to resist the nonspecific adsorption of proteins from solution. Mixed SAMs presenting different functional groups were p…
Advanced Biosensing Techniques and ApplicationsMolecular Junctions and NanostructuresPolymer Surface Interaction Studies
T. Bosch、A. M. Manich、Julieta Carilla 等 5 位作者2001-07-30Journal of Applied Polymer Science
Abstract The thermomechanical analysis is applied to characterize the shrinking process of bovine chrome leather. The interpretation of the curves obtained is performed and a value of glass transition temperature is estimated. The influence of the sampling zone on the thermomechanical parameters is discussed. The infl…
Collagen: Extraction and CharacterizationMaterials Engineering and ProcessingMaterial Properties and Processing
B.M. Andreev、Э. П. Магомедбеков2001-07-30Separation Science and Technology
This article reviews and analyzes the results obtained by studying isotope effects and kinetics of isotope exchange in systems involving heavy hydrogen isotopes and intermetallic compound hydrides for the last 20 years. Particular attention is paid to the analysis of possibilities to realize the separation process in…
Fusion materials and technologiesNuclear Materials and PropertiesChemical Synthesis and Characterization
Ayaka Yamada、Paul Fons、Ralf Hunger 等 6 位作者2001-07-30Applied Physics Letters
The interface construction of tilt growth that is sometimes observed for epilayer growth on a lattice mismatched substrate is modeled on the basis that tilt relieves misfit strain in the epilayer. In this model off-axis misfit accommodation is assumed to be due to only tilt dislocations or tilt dislocations combined w…
Copper Interconnects and ReliabilitySemiconductor materials and devicesOptical Coatings and Gratings
Kenji Hata、M. Fujita、Shoji Yoshida 等 9 位作者2001-07-30Applied Physics Letters
We demonstrate an in situ selective adsorption of Si nanoparticles fabricated by laser ablation on a functionalized self-assembled monolayer (SAM). Si nanoparticles adsorbed on –CH3 terminated a SAM while Si particles did not adsorb on –NH2, –F, –OH, and –COOH, terminated SAMs. The end group of a SAM solely determines…
Force Microscopy Techniques and ApplicationsMolecular Junctions and NanostructuresSilicon Nanostructures and Photoluminescence
Mei Chen、Ning‐Jian Ao、Ying Chen 等 9 位作者2001-07-30Journal of Applied Polymer Science
Abstract Clay was modified by using a polymeric coating agent, a silicane coupling agent, and a titanate coupling agent together with the antioxidant for preparing the clay–rubber masterbatch. After the thermooxidative, photooxidative, and ozone aging, the properties of the masterbatch were also determined. The result…
Polymer Science and PVCPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Roberto T. Leon、Reginald DesRoches、Justin Ocel 等 4 位作者2001-07-30Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
The application of Nitinol shape memory alloys (SMA) in steel connections is evaluated using connections incorporating SMA tendons. Shape memory alloys are a class of alloys that exhibit thermo-mechanical characteristics that are ideally suited for seismic applications. They have the ability to dissipate significant e…
Shape Memory Alloy Transformations
Maria Laura Di Lorenzo、Sossio Cimmino、Clara Silvestre2001-07-30Journal of Applied Polymer Science
Abstract The influence of a natural terpene resin, poly(α‐pinene) (PαP), on the nonisothermal crystallization process of isotactic polypropylene (iPP) was investigated. The solidification process strongly depends on cooling rate, composition, and miscibility of the system. For the blends containing PαP up to 30 wt %,…
Polymer Nanocomposites and PropertiesPolymer crystallization and propertiesbiodegradable polymer synthesis and properties