Nathalie Laronze、Jérôme Marrot、Gilbert Hervé2003-08-16Inorganic Chemistry
The influence of the nature of alkali metal cations on the structure of the species obtained from the trivacant precursor A-alpha-[SiW(9)O(34)](10-) has been studied. Starting from the potassium salt 1, K(10)A-alpha-[SiW(9)O(34)].24H(2)O, the sandwich-type complex 2, K(10.75)[Co(H(2)O)(6)](0.5)[Co(H(2)O)(4)Cl](0.25)A-…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Characterization
Wen-Cai Lu、Cai‐Zhuang Wang、Vân Hà Nguyễn 等 6 位作者2003-08-16The Journal of Physical Chemistry A
The structures, energies, and fragmentation stabilities of silicon oxide clusters Si m O n, with m = 1−5, n = 1, 2 m + 1, are studied systematically by ab initio calculations. New structures for nine clusters are found to be energetically more favorable than previously proposed structures. Using the ground state struc…
ZnO doping and propertiesCatalytic Processes in Materials ScienceSemiconductor materials and devices
W. H. Yu、E. T. Kang、K. G. Neoh 等 4 位作者2003-08-16The Journal of Physical Chemistry B
Controlled grafting of well-defined polymer brushes on the hydrogen-terminated Si(100) substrates (the Si−H substrate) was carried out via the surface-initiated atom transfer radical polymerization (ATRP). Surface initiators were immobilized on the Si−H substrates in three consecutive steps: (i) coupling of an ω-unsat…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresForce Microscopy Techniques and Applications
Н. Г. Балабушевич、Olga P. Tiourina、Dmitry Volodkin 等 5 位作者2003-08-16Biomacromolecules
Stable polyelectrolyte capsules were produced by the layer-by-layer (LbL) assembling of biodegradable polyelectrolytes, dextran sulfate and protamine, on melamine formaldehyde (MF) microcores followed by the cores decomposition at low pH. The mean diameter of the capsules at pH 3-5 was 8.0 +/- 0.2 microm, which is mor…
Electrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction StudiesDendrimers and Hyperbranched Polymers
Huibiao Liu、Yuliang Li、Shengqiang Xiao 等 11 位作者2003-08-16Journal of the American Chemical Society
The synthesis of anthracene (AN) nanowires and perylene (PY) nanorods on the basis of solid-phase organic reactions under controlled conditions is discussed, and the structures are confirmed by SEM, TEM, and XRD. The dimension-dependent emission properties of the AN nanowires and PY nanorods is observed. This approach…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications
Kazuhiro Yamauchi、Keiko Takahashi、Hirokazu Hasegawa 等 12 位作者2003-08-16Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTMicrodomain Morphology in an ABC 3-Miktoarm Star Terpolymer: A Study by Energy-Filtering TEM and 3D Electron TomographyKazuhiro Yamauchi, Keiko Takahashi, Hirokazu Hasegawa, Hermis Iatrou, Nikos Hadjichristidis, Takeshi Kaneko, Yuki…
Block Copolymer Self-AssemblyElectron and X-Ray Spectroscopy TechniquesSurface and Thin Film Phenomena
Mario Rabinowitz2003-08-16arXiv
A theoretical explanation is given to account for the unexpected observation that L- and S-band Nb superconducting cavities were found to have lower Q and lower magnetic breakdown field than those of the higher X-band frequencies. Both effects can be related to the trapping of magnetic flux in the cavity walls. The fr…
Materials ScienceSuperconductivity
Ajay Gopinathan2003-08-16arXiv
In this work we seek to understand some of the fundamental processes that govern self-assembly at the nanoscale in the context of the formation of metallic structures on patterned co-polymer templates. To this end we focus on the experiments conducted by Lopes {\it et al} (Nature, 2001), where morphologies resulting f…
Materials ScienceSoft Condensed Matter
Denilson da Silva Perez、Suzelei Montanari、Michel R. Vignon2003-08-16OpenAlex
Various cellulose samples converted into cellulose III by two different ammonia treatments, either liquid or gaseous, were reacted with catalytic amounts of 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO), sodium hypochlorite, and sodium bromide in water. A substantial increase in the reactivity of cellulose III…
Advanced Cellulose Research StudiesEnzyme-mediated dye degradationLignin and Wood Chemistry
Abraham Marmur2003-08-16OpenAlex
Equilibrium wetting on rough surfaces is discussed in terms of the “competition” between complete liquid penetration into the roughness grooves and entrapment of air bubbles inside the grooves underneath the liquid. The former is the homogeneous wetting regime, usually described by the Wenzel equation. The latter is t…
Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferFluid Dynamics and Thin Films
Yoshitsugu Yamamoto、Tadanori Hashimoto、Hiroyuki Nasu 等 4 位作者2003-08-15Japanese Journal of Applied Physics
Transparent glass-ceramics containing YAl 3 (BO 3 ) 4 crystals were prepared by thermal poling of the Y 2 O 3 –Al 2 O 3 –B 2 O 3 glasses. Second harmonic generation could be measured from both the glass-ceramics prepared with/without applied voltage, however, intensity is markedly enhanced in the samples prepared with…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotorefractive and Nonlinear Optics
Uwe Kolitsch2003-08-15Acta Crystallographica Section E Structure Reports Online
Mg-rich wolfeite [diiron(II) hydroxide phosphate], (FeII,Mg)2(PO4)(OH), from the Big Fish River area, Yukon Territory, Canada, is isotypic with its MnII-dominant analogue triploidite. The framework structure contains edge- and corner-sharing, distorted MO4(OH) and MO4(OH)2 (M = FeII or FeII,Mg) polyhedra linked by fa…
Crystal Structures and PropertiesChemical Synthesis and CharacterizationX-ray Diffraction in Crystallography
Michael F. Pepitone、K. Eaiprasertsak、Stephen S. Hardaker 等 4 位作者2003-08-15Organic Letters
[reaction: see text] Synthesis of 2,5-bis[(3,4-ethylenedioxy)thien-2-yl]-3-substituted thiophene monomers afforded compounds with blue emission characteristics and having a quantum yield of 3-5%. Cyclic voltammetry was employed to investigate the electrochemical behavior of the four monomers reported here. Polymer fil…
Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications
K. Onal、M.C. Maris-Sida、G. H. Meier 等 4 位作者2003-08-15Materials at High Temperatures
Water vapor is present in most environments in which alloys are used at elevated temperatures and there are papers in the literature that show water vapor usually has adverse effects on the oxidation resistance of alloys. However, the exact effect of water vapor is dependent on the particular alloy under consideration…
Advanced ceramic materials synthesisHigh-Temperature Coating BehaviorsIntermetallics and Advanced Alloy Properties
V.K. Tolpygo、David R. Clarke2003-08-15Materials at High Temperatures
A novel, two-stage oxidation experiment is described that enables the outward diffusion of cations in alumina scales during high-temperature oxidation to be analyzed on the basis of microstructural changes in the surface morphology of the scale. Using this technique, observations of aluminum out-diffusion along α-Al2O…
Advanced ceramic materials synthesisCatalytic Processes in Materials ScienceHigh-Temperature Coating Behaviors
Hee Bum Hong、Dong‐Wan Kim、Kug Sun Hong2003-08-15Japanese Journal of Applied Physics
Polymorphic phases of Bi 2 (Zn 1/3 Ta 2/3 ) 2 O 7 pyrochlore were studied. A metastable monoclinic structure was observed at temperatures below 950°C. This low-temperature phase possesses highly temperature-stable characteristics in the microwave frequency range (5–7 GHz) with a temperature coefficient of resonant fre…
Microwave Dielectric Ceramics SynthesisNuclear materials and radiation effects
Nina P. M. Huck、Ilja Staupe、Alexandre Thirouard 等 4 位作者2003-08-15Japanese Journal of Applied Physics
A cholesteric liquid crystal layer acts as a Bragg reflector for one circular polarization at normal incidence. At oblique incidence the situation is more complex. We investigated, both numerically and experimentally, the optical behavior of a cholesteric liquid crystal layer by illuminating the layer at normal and ob…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsOptical Polarization and Ellipsometry
A. Korytko、Kenneth Schulz、Mark S. Madison 等 4 位作者2003-08-15Journal of Chemical Information and Computer Sciences
A new method of structure generation called convergent structure generation has been developed to address limitations of earlier methods. The features of the program (HOUDINI) based on this method include the following: a single integrated representation of the collective substructural information; the use of parallel…
Computational Drug Discovery MethodsCrystallization and Solubility StudiesMachine Learning in Materials Science
Kazuhiro Mori、Takashi Kamiyama、Hisao Kobayashi 等 6 位作者2003-08-15Journal of the Physical Society of Japan
A weak distortion of a [FeO 6 ] octahedron was observed in hexagonal BaFeO 2.91 at around 180 K by neutron powder diffraction. The occurrence of a weak distortion is consistent with the results of Mössbauer measurements, which indicated a decrease in the Fe 4+ concentration below 170 K. We strongly suggest that the we…
High-pressure geophysics and materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
Lechosław Latos‐Grażyński2003-08-15ChemInform
Abstract For Abstract see ChemInform Abstract in Full Text.
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsPorphyrin Metabolism and Disorders