Guillaume Defontaine、Laurent J. Michot、Isabelle Bihannic 等 5 位作者2003-11-08Langmuir
Takovites are nickel-based layered double hydroxides (LDHs) with a general formula that can be written as Ni 1 - x Al x (OH) 2, A z - x / z, y H 2 O, where A is a compensating interlayer anion. As in some other LDH samples, the positive charge of the layer can be adjusted upon synthesis and various anions can be excha…
Supercapacitor Materials and FabricationLayered Double Hydroxides Synthesis and ApplicationsInorganic Chemistry and Materials
D. Laliberté、Thierry Maris、Ariane Sirois 等 4 位作者2003-11-08Organic Letters
Molecules that associate to form porous networks can be made by attaching multiple hydrogen-bonding sites to suitable cores. Pentaerythrityl tetraphenyl ether, a four-armed core, is the progenitor of dendritic derivatives with more arms, including dipentaerythrityl hexaphenyl ether 7. An advantage of such dendritic de…
Advanced Polymer Synthesis and CharacterizationLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers
Steven J. Limmer、Tammy P. Chou、Guozhong Cao2003-11-08The Journal of Physical Chemistry B
Metal−insulator core−shell structures have been demonstrated to have interesting and tunable optical properties. Systems previously investigated include silica-capped gold particles and gold shells surrounding silica particles. However, many of the systems studied so far have been spherical (or zero-dimensional). Thus…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications
Teiichi Kimura、Takashi Goto、Hisanori Yamane 等 6 位作者2003-11-08Acta Crystallographica Section C Crystal Structure Communications
The crystal structure of monobarium dititanium pentaoxide, BaTi(2)O(5), synthesized by a floating-zone method, was studied by X-ray diffraction. Previous reports describe the structure as being in the monoclinic centrosymmetric space group C2/m. We have recently found that this material exhibits ferroelectricity, and…
Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsSolid-state spectroscopy and crystallography
Thierry Toupance、Odile Babot、B. Jousseaume 等 4 位作者2003-11-08Chemistry of Materials
Nanocrystalline mesoporous tin dioxide materials have been obtained through the controlled hydrolysis of bis(2-methylbutan-2-oxy)di(pentan-2,4-dionato)tin followed by a thermal treatment at 400−550 °C. These materials have been carefully characterized by elemental analysis, FTIR, TGA-MS, XRD, MET, N 2 adsorption, and…
Mesoporous Materials and CatalysisPorphyrin and Phthalocyanine ChemistryTransition Metal Oxide Nanomaterials
Tôru Kyômen、Ryutaro Yamazaki、Mitsuru Itoh2003-11-08Chemistry of Materials
The relaxation phenomenon around 1300 K in LaMn 0.5 Co 0.5 O 3+ δ and their valence states of Mn and Co atoms were investigated by TG-DTA, powder X-ray diffraction, magnetic susceptibility, and XANES of two samples cooled at 10 Kh - 1 in the range 1673−973 K and quenched from 1673 K. DTA clarified that the relaxation…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides
Elizabeth R. Gillies、Jean M. J. Fréchet2003-11-08The Journal of Organic Chemistry
Self-assembled polyester dendritic bow-ties with various peripheral groups were prepared, and their association constants were measured by (1)H NMR in CDCl(3). The two complementary dendrons were prepared by attachment of either a bis(adamantylurea) or a glycinylurea to the focal point of the dendron. The parent self-…
Advanced Polymer Synthesis and CharacterizationDendrimers and Hyperbranched PolymersSynthesis and properties of polymers
Sergio Ferro、Achille De Battisti2003-11-08Analytical Chemistry
Heavily doped diamond films are quite actively studied for their promising applications in industrial as well as in fundamental electrochemistry (both for physicochemical studies and in the field of electroanalysis), because of their very high stability toward chemical and electrochemical oxidative attacks. Fluorinate…
Diamond and Carbon-based Materials ResearchMolecular Junctions and NanostructuresAnalytical Chemistry and Sensors
Jianyong Jin、Dennis W. Smith、Chris M. Topping 等 9 位作者2003-11-08Macromolecules
A novel class of phenylphosphine oxide (PPO) containing perfluorocyclobutyl (PFCB) polymers has been developed for potential use as multifunctional materials in space environments. The reaction of p -BrArOCF CF 2 (for Ar = phenyl and biphenyl) with tert -butyllithium affords the lithium reagent smoothly below −20 °C.…
Synthesis and characterization of novel inorganic/organometallic compoundsSynthesis and properties of polymersSilicone and Siloxane Chemistry
Keith Refson、Sungho Park、Garrison Sposito2003-11-08The Journal of Physical Chemistry B
The interpretation of diffraction and spectroscopic data on clay minerals can be facilitated by first-principles quantum mechanical simulations based on density functional theory (DFT), which now has achieved sufficient accuracy to predict crystallographic properties of these minerals without recourse to empirical par…
High-pressure geophysics and materialsSoil and Unsaturated FlowClay minerals and soil interactions
Chengzhong Yu、Jie Fan、Bozhi Tian 等 5 位作者2003-11-08The Journal of Physical Chemistry B
Five commercial poly(ethylene oxide)/poly(butylene oxide) (PEO/PBO) triblock copolymer surfactants were utilized as structure-directing agents to synthesize mesoporous silica under acidic conditions. The structures of these materials were characterized by using powder X-ray diffraction (XRD), nitrogen adsorption analy…
Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
Anil Mahapatro、Ajay Kumar、Richard A. Gross2003-11-08Biomacromolecules
Immobilized Candida antarctica Lipase B (Novozyme-435) was studied for bulk polyesterifications of linear aliphatic hydroxyacids of variable chain length. The products formed were not fractionated by precipitation. The relative reactivity of the hydroxyacids was l6-hydroxyhexadecanoic acid approximately 12-hydroxydode…
Enzyme Catalysis and ImmobilizationAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties
Polona Umek、Jin Won Seo、Klára Hernádi 等 7 位作者2003-11-08Chemistry of Materials
Single wall carbon nanotubes (SWNT) were functionalized via addition of carbon radicals, which were generated by thermal decomposition of diacyl and dibenzoyl peroxides. Reaction products were investigated with TEM, Raman scattering, TGA, UV−Visible spectroscopy, FTIR, and 1 H NMR. In Raman spectra of functionalized S…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications
Katsuya Teshima、Hiroyuki Sugimura、Yasushi Inoue 等 5 位作者2003-11-08Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVNoteUltra-Water-Repellent Poly(ethylene terephthalate) SubstratesKatsuya Teshima, Hiroyuki Sugimura, Yasushi Inoue, Osamu Takai, and Atsushi TakanoView Author Information Department of Materials Processing Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603,…
Surface Modification and SuperhydrophobicityPolymer crystallization and propertiesFiber-reinforced polymer composites
Tsuyohiko Fujigaya、Donglin Jiang、Takuzo Aida2003-11-08Journal of the American Chemical Society
Iron(II) complexes of triazole derivatives having two C12 and C16 long alkyl chains, (C12trz)FeII and (C16trz)FeII, serve as novel spin-crossover materials, which display a spin-state transition in response to a phase transition. In contrast, a triazole complex with two C8 alkyl chains ((C8trz)FeII) exhibits only a po…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
Masahiro Yamada、M. Ooidemizu、Yuichi Ikuta 等 9 位作者2003-11-08Inorganic Chemistry
A series of two-dimensional (2D) spin crossover complexes, [FeIIH3L(Me)][FeIIL(Me)]X (X-=ClO4-, BF4-, PF6-, AsF6-, SbF6-) 1-5, have been synthesized, where H3L(Me) denotes an hexadentate N6 tripodlike ligand containing three imidazole groups, tris[2-(((2-methylimidazol-4-yl)methylidene)amino)ethyl]amine. Compounds 1-5…
Magnetism in coordination complexesMetal-Catalyzed Oxygenation MechanismsOrganic and Molecular Conductors Research
Debabrata Rautaray、Absar Ahmad、Murali Sastry2003-11-08Journal of the American Chemical Society
The biosynthesis of CaCO3 by reaction of aqueous Ca2+ ions with a fungus, Fusarium sp., and an actinomycete, Rhodococcus sp. (both plant organisms), is described. In the case of the fungus, cruciform-shaped calcite crystals are obtained (SEM picture A) while the actinomycete yielded the unstable polymorph of CaCO3, va…
Paleontology and Stratigraphy of FossilsCalcium Carbonate Crystallization and InhibitionMarine Sponges and Natural Products
Dapeng Cao、Xianren Zhang、Jian‐Feng Chen 等 5 位作者2003-11-08The Journal of Physical Chemistry B
The adsorption storage of methane on triangular arrays of single-walled carbon nanotubes (SWNT) at room temperature was investigated by the grand canonical Monte Carlo (GCMC) method. In the simulation, carbon atoms on the tubular wall were structured according to the ( m, m ) armchair arrangement, and the site-to-site…
Carbon Nanotubes in CompositesGraphene research and applicationsZeolite Catalysis and Synthesis
Jinfang Zhi、Haibin Wang、T. Nakashima 等 5 位作者2003-11-08The Journal of Physical Chemistry B
The electrochemical incineration of organic pollutants on a boron-doped diamond (BDD) thin film electrode was examined by bulk electrolysis, and the mechanism of oxidation was investigated. A comparative study with other electrodes such as Pt and glassy carbon (GC) electrodes revealed the superiority of the BDD over t…
Advanced Photocatalysis TechniquesAdvanced oxidation water treatmentCovalent Organic Framework Applications
Akinobu Z. Suzuki、Takayoshi Watanabe、Mika Kawamoto 等 8 位作者2003-11-08Organic Letters
Caged compounds can be used to regulate the spatial and temporal dynamics of signaling molecules in live cells. Photochemical properties of coumarin-4-ylmethoxy carbonates (1a-d) are investigated to construct caged compounds of hydroxy-containing molecules. All the compounds possess desired properties as phototriggers…
Radical Photochemical ReactionsPhotochromic and Fluorescence ChemistryFree Radicals and Antioxidants