Materials Literature

文献浏览

按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。

清除
第 183311 / 187047 页 · 当前展示 3,666,201–3,666,220 / 3,740,936 条匹配结果 · 摘要仅作预览

Design, synthesis, and structure of the largest trimetallic cluster, [(Ph3P)10Au12Ag12PtCl7]Cl: the first example of a trimetallic biicosahedral supracluster and its implication for the vertex-sharing polyicosahedral growth of the gold/silver/platinum ternary cluster system

Boon K. Teo、Hong Zhang、Xiaobo Shi1993-09-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesign, synthesis, and structure of the largest trimetallic cluster, [(Ph3P)10Au12Ag12PtCl7]Cl: the first example of a trimetallic biicosahedral supracluster and its implication for the vertex-sharing polyicosahedral growth of the gold/silver/platinum ternary cluster systemB…

Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesNanocluster Synthesis and Applications

Frequency-dependent hyperpolarizabilities in the Mo/ller–Plesset perturbation theory

Fumihiko Aiga、Kotoku Sasagane、Reikichi Itoh1993-09-01The Journal of Chemical Physics

A formulation for calculating frequency-dependent hyperpolarizabilities in the Mo/ller–Plesset perturbation theory is presented as the correlation correction to the TDHF approximation. Our quasienergy derivative (QED) method is applied, and the difference between the QED method and the pseudoenergy derivative (PED) me…

Advanced Chemical Physics StudiesNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography

Unexpected disproportionation mechanism for proton-transfer reactions between 17-electron metal hydride cation radicals and neutral 18-electron metal hydrides

Kjell Tore Smith、C. ROEMMING、Mats Tilset1993-09-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnexpected disproportionation mechanism for proton-transfer reactions between 17-electron metal hydride cation radicals and neutral 18-electron metal hydridesKjell Tore Smith, Christian Roemming, and Mats TilsetCite this: J. Am. Chem. Soc. 1993, 115, 19, 8681–8689Publication…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceAmmonia Synthesis and Nitrogen Reduction

Early transition metal porphyrins: synthesis, characterization, and reactivity of novel out-of-plane cis-ligated zirconium porphyrin derivatives

Holger Brand、John Arnold1993-09-01Organometallics

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEarly transition metal porphyrins: synthesis, characterization, and reactivity of novel out-of-plane cis-ligated zirconium porphyrin derivativesHolger Brand and John ArnoldCite this: Organometallics 1993, 12, 9, 3655–3665Publication Date (Print):September 1, 1993Publication…

Porphyrin and Phthalocyanine ChemistryMolecular Junctions and NanostructuresSurface Chemistry and Catalysis

Study of Memory Alignment of Nematic Liquid Crystals on Polyvinyl Alcohol Coatings

Peter Vetter、Yoshinori Ohmura Yoshinori Ohmura、Tatsuo Uchida1993-09-01Japanese Journal of Applied Physics

Polymer layers can cause memory alignment of nematic liquid crystals. We describe an experimental method to characterize this effect. We studied the temperature dependence of the memory alignment on polyvinyl alcohol coatings. We also investigated the influence of the time span during which the memory alignment is gen…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsSurfactants and Colloidal Systems

Viscosities of concentrated dispersions

T. S. Chow1993-09-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

A theory is presented to describe the effects of particle shape, orientation, and volume fraction on the anisotopic viscosities of concentrated colloidal dispersions. We start with Stokesian dynamics; a particle-shape tensor is derived from the analysis, which is then included in a fluid lattice model for the determin…

Material Dynamics and PropertiesSurfactants and Colloidal SystemsElectrostatics and Colloid Interactions

Preparation of MgIn2O4-X Thin Films on Glass Substrate by RF Sputtering

H. Un’no、Naoko Hikuma、Takahisa Omata 等 6 位作者1993-09-01Japanese Journal of Applied Physics

MgIn 2 O 4- X thin films were deposited onto a silica glass plate by the RF sputtering method. The highest conductivity observed for the film post-annealed under H 2 flow was 2.3×10 2 S/cm, with a carrier concentration of 6.3×10 20 cm -3 and a mobility of 2.2 cm 2 ·V -1 ·s -1 . No distinct optical absorption band was…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials

First reversible electrogeneration of triply oxidized nickel porphyrins and porphycenes. Formation of nickel(III) .pi. dications

Karl M. Kadish、Eric Van Caemelbecke、Pierre Boulas 等 8 位作者1993-09-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFirst reversible electrogeneration of triply oxidized nickel porphyrins and porphycenes. Formation of nickel(III) .pi. dicationsKarl M. Kadish, Eric Van Caemelbecke, Pierre Boulas, Francis D'Souza, Emanuel Vogel, Michael Kisters, Craig J. Medforth, and Kevin M. SmithCite thi…

Porphyrin and Phthalocyanine ChemistryElectrochemical Analysis and ApplicationsAdvanced battery technologies research

Photochromic Rewritable Memory Media: A New Nondestructive Readout Method

Fumio Tatezono、Toshio Harada、Yoshiaki Shimizu 等 5 位作者1993-09-01Japanese Journal of Applied Physics

A new nondestructive readout method was proposed for photochromic rewritable memory media. When the medium has a thermal threshold in the writing process with a λ 1 laser, reading using two lasers having emission lines at λ 1 and λ 2 , which correspond to absorption bands of the two isomers, makes it possible to keep…

Neurobiology and Insect Physiology ResearchPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research

Stability and Degradation of Polymethacrylates with Controlled Structure

Koichi Hatada、Tatsuki Kitayama、Nobutaka Fujimoto 等 4 位作者1993-09-01Journal of Macromolecular Science Part A

Thermal degradation behaviors for homo- and copolymers of methacrylates prepared by stereospecific living polymerizations as well as radical polymerization were studied. Thermal stability of radically prepared PMMAs can be improved by careful control of end groups and by incorporation of methyl acrylate into the chain…

Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesThermal and Kinetic Analysis

Carbon aerogel composite electrodes

Joseph. Wang、Lúcio Angnes、Haim Tobias 等 8 位作者1993-09-01Analytical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon aerogel composite electrodesJoseph. Wang, Lucio. Angnes, Haim. Tobias, Rebecca A. Roesner, Keith C. Hong, Robert S. Glass, Fung Ming. Kong, and Richard W. PekalaCite this: Anal. Chem. 1993, 65, 17, 2300–2303Publication Date (Print):September 1, 1993Publication History…

Supercapacitor Materials and FabricationGas Sensing Nanomaterials and SensorsAnalytical Chemistry and Sensors

Novel Preparation, Characterization and Catalytic Properties of Polymer-Protected Cu/Pd Bimetallic Colloid

Naoki Toshima、Yuan Wang1993-09-01Chemistry Letters

Abstract Polymer-protected Cu/Pd bimetallic colloids with different atomic ratio of Cu to Pd were successfully prepared by refluxing a glycol solution of hydroxide of copper and palladium in the presence of poly(N-vinyl-2-pyrrolidone). The TEM, XRD, AAS and UV-vis spectrum measurements indicate the formation of bimeta…

Catalytic Processes in Materials ScienceCopper-based nanomaterials and applicationsNanoporous metals and alloys

Pore Narrowing and Formation of Ultrathin Yttria‐Stabilized Zirconia Layers in Ceramic Membranes by Chemical Vapor Deposition/Electrochemical Vapor Deposition

Guozhong Cao、H.W. Brinkman、J. Meijerink 等 5 位作者1993-09-01Journal of the American Ceramic Society

Chemical vapor deposition (CVD) and electrochemical vapor deposition (EVD) have been applied to deposit yttria‐stabilized‐zirconia (YSZ) on porous ceramic media. The experimental results indicate that the location of YSZ deposition can be varied from the surface of the substrates to the inside of the substrates by cha…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel Cells

Preferential paths in alkali ion migration and the mixed alkali effect in silicate glasses

Sundaram Balasubramanian、K. J. Rao1993-09-01The Journal of Physical Chemistry

The mixed alkali effect (MAE) in glasses has been investigated using molecular dynamics simulation. It has been established using Van Hove type correlation functions that alkali ions exhibit site preferences during migration. The occurrence of conductivity minimum has been demonstrated, and reasons for suppression of…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsElectrochemical Analysis and Applications

Dendrimere Polyamine

Rolf Moors、Fritz Vögtle1993-09-01Chemische Berichte

Dendrimeric Polyamines The dendritic amines 2, 3, 4 and the imine 6 are synthesized by a divergent strategy. The formerly problematic reduction of polynitriles is achieved by the use of diisobutylaluminium hydride in high yield. The functional imine dendrimer 6 is converted into its tricobalt complex 7 .

RNA Interference and Gene DeliveryChemical Synthesis and AnalysisDendrimers and Hyperbranched Polymers

Near-threshold ion-induced defect production in graphite

D. Marton、Kevin J. Boyd、T.E. Lytle 等 4 位作者1993-09-01Physical review. B, Condensed matter

Subplantation of the noble-gas ions ${\mathrm{He}}^{+}$, ${\mathrm{Ne}}^{+}$, ${\mathrm{Ar}}^{+}$, and ${\mathrm{Kr}}^{+}$ into graphite in the energy range of 10--150 eV with doses in the range of 1--15\ifmmode\times\else\texttimes\fi{}${10}^{14}$ ions/${\mathrm{cm}}^{2}$ has been studied by Auger electron spectrosco…

Electron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysisGraphite, nuclear technology, radiation studies

Aggregation behavior of sodium cholate in aqueous solution

Adela Coello、Francisco Meijide、Eugenio Rodríguez Núñez 等 4 位作者1993-09-01The Journal of Physical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAggregation behavior of sodium cholate in aqueous solutionA. Coello, F. Meijide, E. Rodriguez Nunez, and J. Vazquez TatoCite this: J. Phys. Chem. 1993, 97, 39, 10186–10191Publication Date (Print):September 1, 1993Publication History Published online1 May 2002Published inissu…

Crystallization and Solubility StudiesChemical and Physical Properties in Aqueous Solutions

A solid‐state electrochromic device based on polyaniline, prussian blue and an elastomeric electrolyte

Eliana Aparecida de Rezende Duek、Marco‐A. De Paoli、Marina Mastragostino1993-09-01Advanced Materials

Advantages of solid‐state electrochemical devices are the ease of production, no possibility of leakage, and no electrolyte evaporation. One result of the search for such a device is the electrochromic display sketched in the Figure, which uses polyaniline and Prussian Blue as the active electrochromic materials and a…

Advanced Sensor and Energy Harvesting MaterialsConducting polymers and applicationsTransition Metal Oxide Nanomaterials

SYNTHESIS AND CHARACTERIZATION OF A MULTIBRIDGED PORPHYRIN COMPLEX CONTAINING PERIPHERAL BIS(BIPYRIDINE)-RUTHENIUM(II) GROUPS

Koiti Araki、Henrique E. Toma1993-09-01Journal of Coordination Chemistry

The synthesis and characterization of a new meso-tetrapyridylporphyrin (TPyP) modified with four [Ru(bipy)2Cl]+ groups is reported. Cyclic voltammograms of this species in N,N′-dimethylformamide exhibit three reversible waves at 0.92, −0.68 and −0.93 V versus SHE, ascribed to the ruthenium(III/II) redox couple, and to…

Electrochemical sensors and biosensorsPorphyrin and Phthalocyanine ChemistryElectrochemical Analysis and Applications

Fibrous Monolithic Ceramics: II, Flexural Strength and Fracture Behavior of the Silicon Carbide/Graphite System

Suresh Baskaran、John W. Halloran1993-09-01Journal of the American Ceramic Society

The fibrous monolith microstructure consists of high aspect ratio polycrystalline cells of SiC separated by thin cell boundaries containing graphite. The SiC/100% graphite fibrous monolith has noncatastrophic fracture behavior, is damage tolerant, and is notch insensitive. The failure process is characterized by fract…

Advanced ceramic materials synthesisAluminum Alloys Composites PropertiesAdvanced materials and composites