Jean‐Pierre Costes、Françoise Dahan、Arnaud Dupuis2000-11-30Inorganic Chemistry
The present paper is devoted to the study of original trinuclear (CuII, LnIII, CuII) complexes (Ln = La, Ce, Gd). They derive from the polydentate ligands H2Li (i = 1, 3, 4) represented in Figure 1. The crystal and molecular structures of two complexes have been determined at room temperature. The (Cu, Gd, Cu) complex…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal complexes synthesis and properties
Steven R. Cordero、Paul J. Carson、R. August Estabrook 等 5 位作者2000-11-30OpenAlex
We show that the luminescence from CdSe quantum dot monolayers can be strongly influenced by the interaction of water molecules adsorbed on the surface. Light-induced alterations in the surface states following adsorption of water, results in quasi-reversible luminescence changes in the quantum dot. The excitonic QY i…
Molecular Junctions and NanostructuresChalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And Properties
Krijn P. de Jong、J.W. Geus2000-11-30OpenAlex
Carbon nanofibers (diameter range, 3–100 nm; length range, 0.1–1000 µm) have been known for a long time as a nuisance that often emerges during catalytic conversion of carbon-containing gases. The recent outburst of interest in these graphitic materials originates from their potential for unique applications as well a…
Advancements in Battery MaterialsCarbon Nanotubes in CompositesGraphene research and applications
Timothy P. Bender、Zhi Yuan Wang2000-11-29Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTPolyimide Thin Films Produced by Direct Solid-State Polymerization of an Amino Anhydride MonomerTimothy P. Bender and Zhi Yuan WangView Author Information Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa,…
Synthesis and properties of polymersSynthetic Organic Chemistry MethodsSilicone and Siloxane Chemistry
M. G. Olayo、J. Morales、Guillermo J. Cruz 等 6 位作者2000-11-29Journal of Polymer Science Part B Polymer Physics
The influences that both electron energy and density of a plasma bear on thin film formation are examined in the case of iodine-doped polyaniline polymerization. The plasma was produced by means of 13.5-MHz radiofrequency–generated glow discharges in low-pressure (ca. 10−2 mbar) air between electrodes. Four representa…
Conducting polymers and applicationsAnalytical Chemistry and SensorsAdvanced Sensor and Energy Harvesting Materials
Simon J. Webb、Jeremy K. M. Sanders2000-11-29Inorganic Chemistry
A series of cyclic metalloporphyrin trimers containing one Ru(II)-CO porphyrin center are synthesized. A stepwise convergent route is used to synthesize Ru(CO)Zn(2)2.Py3T, where tripyridyltriazine (Py3T) templates the formation of the trimer and forces the CO group to the outside of the cavity. Three mixed-metal trime…
Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Ken’ichiro Matsumoto、Hiromi Matsusaki、Seiichi Taguchi 等 5 位作者2000-11-29Biomacromolecules
Pseudomonas sp. 61-3 produces a blend of poly(3-hydroxybutyrate) [P(3HB)] homopolymer and poly(3-hydroxybutyrate-co-3-hydroxyalkanoates) [P(3HB-co-3HA)] random copolymer consisting of monomeric units of 4-12 carbon atoms from sugars. The phaG(Ps) gene encoding (R)-3-hydroxyacyl-acyl carrier protein coenzyme A transfer…
biodegradable polymer synthesis and propertiesEnzyme Catalysis and ImmobilizationMicrobial Metabolic Engineering and Bioproduction
David A. Shultz、S.H. Bodnar、Kira E. Vostrikova 等 4 位作者2000-11-29Inorganic Chemistry
A "spin diverse" S = 3/2 ground-state complex, NN-SQCuTpCum,Me, has been prepared. The three S = 1/2 spin carriers are nitronyl nitroxide (NN), o-semiquinone (o-SQ), and cupric ion. The solid-state structure of the ZnII derivative, NN-SQZnTpCum,Me (C56H69BN8O4Zn), was determined: monoclinic, P2(1)/c, a = 12.5781(12) A…
Electron Spin Resonance StudiesLanthanide and Transition Metal ComplexesMagnetism in coordination complexes
Kurt Hostettmann、Christian Terreaux2000-11-29CHIMIA International Journal for Chemistry
Higher plants represent a rich source of new molecules with pharmacological properties, which are lead compounds for the development of new drugs. During the last decades, the renewed interest in investigating natural products has led to the advent of several important drugs, such as the anticancer substances vinblast…
Toxin Mechanisms and ImmunotoxinsPhytochemistry and Bioactive CompoundsNatural product bioactivities and synthesis
Yoshiaki Nishibayashi、Shin Takemoto、Shotaro Iwai 等 4 位作者2000-11-29Inorganic Chemistry
Treatment of cis-[W(N2)2(PMe2Ph)4] (5) with an equilibrium mixture of trans-[RuCl(eta 2-H2)(dppp)2]X (3) with pKa = 4.4 and [RuCl(dppp)2]X (4) [X = PF6, BF4, or OTf; dppp = 1,3-bis(diphenylphosphino)propane] containing 10 equiv of the Ru atom based on tungsten in benzene-dichloroethane at 55 degrees C for 24 h under 1…
Catalysis and Hydrodesulfurization StudiesCatalysis and Oxidation ReactionsCatalytic Processes in Materials Science
Hyo Jik Lee、Jung Ju Lee2000-11-29Smart Materials and Structures
A shape memory alloy (SMA) spring actuator for an active catheter was fabricated by the heat treatment of wound SMA wire on a mandrel. In order to evaluate the characteristics of the fabricated SMA spring actuator, four types of tests were performed, as follows: isothermal loading and unloading, measurement of shape r…
Shape Memory Alloy Transformations
Koen Binnemans、Liesbet Jongen、C. Bromant 等 5 位作者2000-11-29Inorganic Chemistry
The structural and thermal behavior of all members of the homologous series of neodymium(III) alkanoates, ranging from neodymium(III) butyrate to neodymium(III) eicosanoate are described. Neodymium(III) butyrate monohydrate, Nd(C3H7COO)3.H2O crystallizes in space group P1 (No. 2), Z = 2. The lattice parameters are a =…
Chemical Thermodynamics and Molecular StructureLanthanide and Transition Metal ComplexesLiquid Crystal Research Advancements
Massimo Ruzzene、A. Baz2000-11-29Smart Materials and Structures
The capability of periodic structures to act as filters for traveling waves is used to control the longitudinal wave propagation in rods. Shape memory inserts placed periodically along the rods act as sources of impedance mismatch with tunable characteristics. Such characteristics are attributed to the unique behavior…
Shape Memory Alloy TransformationsAcoustic Wave Phenomena Research
Hyo Jik Lee、Jung Ju Lee2000-11-29Smart Materials and Structures
The numerical simulation analyses were performed on the buckling and postbuckling behavior of laminated composite shells with embedded shape memory alloy (SMA) wires. These analyses using ABAQUS code were conducted to investigate the effect of embedded SMA wires on the characteristics of buckling and postbuckling caus…
Topology Optimization in EngineeringComposite Structure Analysis and OptimizationShape Memory Alloy Transformations
J. Balogh、L. F. Kiss、A. Halbritter 等 5 位作者2000-11-29arXiv
Ag/Fe/Ag and Cr/Fe/Cr trilayers with a single $25 nm$ thick ferromagnetic layer exhibit giant magnetoresistance (GMR) type behavior. The resistance decreases for parallel and transversal magnetic field alignements with a Langevin-type magnetic field dependence up to B=12 T. The phenomenon is explained by a granular in…
Materials Science
Ch. Helm、J. Keller、Ch. Preis 等 4 位作者2000-11-29arXiv
A microscopic theory for the coupling of intrinsic Josephson oscillations due to charge fluctuations on the quasi two-dimensional superconducting layers is presented. Thereby in close analogy to the normal state the effect of the scalar potential on the transport current is taken into account consistently. The dispers…
SuperconductivityMaterials Science
Koh Wada、Shun-ichi Yoshida、Norihiro Ihara2000-11-29arXiv
The time dependent cluster approximation called the path probability method (PPM) is applied to a pseudo-spin Ising Hamiltonian of the Slater-Takagi model for KH2PO4-type hydrogen-bonded ferroelectrics in order to calculate the homogeneous dynamical susceptibility above and below the ferroelectric transition temperatu…
cond-mat.stat-mechMaterials Science
Rene Messina、Michele Soucail、Ladislas Kubin2000-11-29arXiv
Abnormal grain growth in the presence of second phase particles is investigated with the help of a two-dimensional Monte Carlo simulation. An aggregate of equiaxed grains is considered with constant grain boundary energy and mobility. The only driving force accounted for stems from the grain boundary curvature. The pr…
Materials Science
Alberto Striolo、John M. Prausnitz、Alberto Bertucco2000-11-28Macromolecules
Experimental osmotic second virial coefficients are reported for polystyrene in toluene (good solvent), cyclohexane (ϑ solvent) and methylcyclohexane (poor solvent) in the temperature range 10−60 ° C. The ϑ temperature for eight-arm star polystyrene in methylcyclohexane is 29 ± 3 ° C. Intrinsic viscosity for polystyre…
Advanced Polymer Synthesis and CharacterizationPolymer crystallization and propertiesSurfactants and Colloidal Systems
J. F. Seely2000-11-28Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
The design of the multilayer coatings and multilayer grating for the EIS spectrometer is presented. The grating substrate has a rectangular laminar groove profile with 4200 grooves/mm and a 58 angstrom groove depth. The grating and mirror have two multilayer coatings, each covering half of the areas of the grating and…
Photocathodes and Microchannel PlatesOptical Coatings and GratingsCalibration and Measurement Techniques