Kazuhide Koike、Junji Tanabe、Shigeki Toyama 等 10 位作者2000-05-27Inorganic Chemistry
Photochemical ligand substitution of fac-[Re(X2bpy)(CO)3(PR3)]+ (X2bpy = 4,4'-X2-2,2'-bipyridine; X = Me, H, CF3; R = OEt, Ph) with acetonitrile quantitatively gave a new class of biscarbonyl complexes, cis,trans[Re(X2bpy)(CO)2(PR3)(MeCN)]+, coordinated with four different kinds of ligands. Similarly, other biscarbony…
Metal complexes synthesis and propertiesLanthanide and Transition Metal ComplexesCO2 Reduction Techniques and Catalysts
Alexander Pelmenschikov、Heléne Strandh、Lars G. M. Pettersson 等 4 位作者2000-05-27The Journal of Physical Chemistry B
Hydrolysis of Si−O−Si linkages of β-cristobalite by a single H 2 O molecule is studied within the cluster approach at the DFT (B3LYP) and MP2 levels of theory. The 6-31G(d) and 6-311G(d) basis sets are used. Cluster models, including from 6 up to 14 Si atoms, of the (001) and (111) surface planes are considered. These…
Zeolite Catalysis and SynthesisGlass properties and applicationsClay minerals and soil interactions
Barry C. Thompson、Philippe Schottland、Kyukwan Zong 等 4 位作者2000-05-27Chemistry of Materials
We report a colorimetric method for the in situ study of electrochromic polymers based on the CIE system of colorimetry. This method is useful for the comparison of the electrochemical and optical properties of conjugated polymers, and for gaining control of the color of dual polymer electrochromic devices. Twelve ele…
Conducting polymers and applicationsTransition Metal Oxide NanomaterialsAnalytical Chemistry and Sensors
Shiyou Guan、Shinji Inagaki、Tetsu Ohsuna 等 4 位作者2000-05-27Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCubic Hybrid Organic−Inorganic Mesoporous Crystal with a Decaoctahedral ShapeShiyou Guan, Shinji Inagaki, Tetsu Ohsuna, and Osamu TerasakiView Author Information Toyota Central R&D Laboratories, Inc. Nagakute, Aichi 480-1192, Japan The Institute for Materials Research…
Metal-Organic Frameworks: Synthesis and ApplicationsMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
P. Oxley、Clemens Brechtelsbauer、François Ricard 等 5 位作者2000-05-27Industrial & Engineering Chemistry Research
A continuously operating spinning disk reactor (SDR) displayed distinct advantages over batch processing techniques when several commercially relevant processes for the manufacture of pharmaceuticals as test reactions were investigated. It proved to be a useful tool for revealing intrinsically fast kinetics as well as…
Solidification and crystal growth phenomenaFluid Dynamics and Thin FilmsMaterial Properties and Processing
Arif A. Mamedov、Nicholas A. Kotov2000-05-27OpenAlex
A new technique for preparation of free-standing ultrathin films is presented. These films were made by layer-by-layer (LBL) deposition process, which is utilized for coatings on solid substrates and colloids. A film composed of alternating layers of magnetite nanoparticles and poly(diallyldimethylammonium bromide) wa…
Nanoparticle-Based Drug DeliveryQuantum Dots Synthesis And PropertiesPolymer Surface Interaction Studies
Masashi Miwa、Akira Nakajima、Akira Fujishima 等 5 位作者2000-05-27OpenAlex
Various superhydrophobic films having different surface roughnesses were prepared, and the relationships between the sliding angle, the contact angle, and the surface structure were investigated. In the highly hydrophobic region, the sliding angles of water droplets decreased with increasing contact angles. Microstruc…
Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsAdhesion, Friction, and Surface Interactions
L. Ballester、Ana M. Gil、A. Gutiérrez 等 8 位作者2000-05-26Inorganic Chemistry
New derivatives of formula [M(dieneN4)](TCNQ)3, M = Ni or Cu and dieneN4 = cis- or trans-hexamethyltetraazacyclotetradecadiene, have been obtained. The TCNQ units show electronic delocalization and formation of 1D stacks, with no direct interactions with the metal cations. The stack is not uniform and can be seen as f…
Magnetism in coordination complexesOrganic and Molecular Conductors ResearchN-Heterocyclic Carbenes in Organic and Inorganic Chemistry
Klaus Kassner、Chaouqi Misbah、Judith Mueller 等 5 位作者2000-05-26arXiv
A phase-field approach describing the dynamics of a strained solid in contact with its melt is developed. By rigorous asymptotic analysis we show that the sharp-interface limit of this model recovers the continuum model equations for the Grinfeld instability. Moreover, we use our approach to derive hitherto unknown sh…
Materials Sciencecond-mat.stat-mech
Keiji Yoshimura、Mariko Terashima、Daiki Hozan 等 7 位作者2000-05-25Journal of Agricultural and Food Chemistry
Physical properties of shark gelatin were examined during gel formation and postgelation in comparison with pig gelatin. Samples with various concentrations and pH values were evaluated by breaking strength, dynamic viscoelasticity, and dynamic light scattering. Sol-gel and gel-sol transition temperatures for shark ge…
Textile materials and evaluationsCollagen: Extraction and Characterization
Noel H. Brantley、Sergei G. Kazarian、Charles A. Eckert2000-05-25Journal of Applied Polymer Science
Knowledge of the sorption rate and solubility of CO2 in polymers are of great importance for developing technologies utilizing high-pressure and supercritical CO2-assisted processes. Many conventional techniques for measuring gas sorption have inherent complications when used at elevated pressures. In this work, we de…
Phase Equilibria and ThermodynamicsCarbon dioxide utilization in catalysisPolymer Foaming and Composites
Z. Racz2000-05-25arXiv
Using the XXZ model for the description of one-dimensional magnetic materials we show that an energy flux, j_E, produces a shift, dk (j_E)^0.5, in the characteristic wavenumber of the spin-spin correlations. We estimate dk for a realistic experimental setup and find that it is measurable in inelastic neutron scatterin…
Materials Sciencecond-mat.stat-mech
Yuan Wang、Jiawen Ren、Kai Deng 等 5 位作者2000-05-25OpenAlex
In the absence of any usual protective agent, stable platinum, rhodium, and ruthenium metal nanoclusters with small particle size in organic media are effectively prepared by heating corresponding metal hydroxide colloids in ethylene glycol containing NaOH for the first time. The average diameters of the Pt, Rh, and R…
Gold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsNanomaterials for catalytic reactions
Stefano Di Pascoli、Giuseppe Iannaccone2000-05-24Semiconductor Science and Technology
We have developed a Monte Carlo simulator of the electromigration process in polycrystalline metal stripes. Stripes with different average grain size can be generated with Voronoi tesselation, and mapped onto a network of resistors. The proposed model includes the major role played by grain boundaries and by the curre…
Electronic Packaging and Soldering TechnologiesSemiconductor materials and devicesCopper Interconnects and Reliability
Mika Lindén、Patrik Ågren、Stefan Karlsson 等 5 位作者2000-05-24Langmuir
The solubilization of n -hexane and toluene by silicate−surfactant hexagonal mesophases has been studied by time-resolved in situ synchrotron small-angle X-ray scattering. It is suggested that the extent of solubilization is mainly governed by the oil solubility in the continuous phase. The availability of the oil wil…
Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisPorphyrin and Phthalocyanine Chemistry
Tomoyuki Akutagawa、Tatsuo Hasegawa、Takayoshi Nakamura 等 8 位作者2000-05-24Inorganic Chemistry
Monovalent cations (M+ = Na+, K+, Rb+, and NH4+) and 12-crown-4 were assembled to new supramolecular cation (SC+) structures of the M+(12-crown-4)n (n = 1 and 2), which were incorporated into the electrically conducting Ni(dmit)2 salts (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate). The Na+, K+, and Rb+ salts are isost…
Perovskite Materials and ApplicationsMagnetism in coordination complexesOrganic and Molecular Conductors Research
Maya Chatterjee、Tomohiro Iwasaki、Yoshio Onodera 等 6 位作者2000-05-24Chemistry of Materials
A series of highly ordered mesoporous gallium-containing MCM-41 molecular sieves with variable Si/Ga (100−10) ratios have been synthesized at room temperature. The synthesized Ga−MCM-41 was investigated by powder X-ray diffraction, transmission electron microscopy, thermal analysis, N 2 adsorption measurement, and 29…
Metal-Organic Frameworks: Synthesis and ApplicationsZeolite Catalysis and SynthesisMesoporous Materials and Catalysis
B. Thangaraju、P. Kaliannan2000-05-24Semiconductor Science and Technology
Thin films of tetragonal lead monoxide have been prepared from spray pyrolytic decomposition of an aqueous solution of lead nitrate. The spray pyrolysis set-up developed for this study is also described briefly. From the structural investigations it has been found that the films generally grow with some admixture of m…
Transition Metal Oxide NanomaterialsThermography and Photoacoustic TechniquesSurface Roughness and Optical Measurements
Montserrat Monfort、I. Resino、Joan Ribas 等 7 位作者2000-05-24Inorganic Chemistry
Two new one-dimensional nickel(II) complexes were synthesized and characterized: [Ni(N,N-dimethylethylenediamine)(N3)2] (1) and [Ni(2-aminoethylpyridine)(N3)2] (2). The crystal structures of 1 and 2 were solved. Complex 1 crystallizes in the monoclinic system, space group P2(1)/n with a = 10.569(2) A, b = 7.331(4) A,…
Metal complexes synthesis and propertiesMagnetism in coordination complexesOrganic and Molecular Conductors Research
Satoshi Igarashi、Yoshimasa Hoshino、Yoshio Masuda 等 4 位作者2000-05-24Inorganic Chemistry
A centered icosahedral 12-coordinate samarium cluster formed by six bis(L-prolinato)nickel(II) ([Ni(pro)2]) ligands, [Sm(Ni(pro)2)6]3+, was prepared. The reaction of Sm with [Ni(pro)2] in a small excess (a 2-fold excess) and also in a large excess (even a 10-fold excess) of the latter produced the cluster. Therefore,…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes