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Mononuclear and dinuclear ruthenium complexes containing the LRu(acac) fragment. Crystal structures of [LRuIII(acac)(OH)]PF6.cntdot.H2O, [{LRuIII(acac)}2(.mu.-O2H3)](PF6)3, and [{LRuIII(acac)}2(.mu.-O)](PF6)2. Characterization of the mixed-valence species [{LRu(acac)}2(.mu.-O)](PF6)3 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane)

R. Schneider、Thomas Weyhermueller、Karl Wieghardt 等 4 位作者1993-10-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMononuclear and dinuclear ruthenium complexes containing the LRu(acac) fragment. Crystal structures of [LRuIII(acac)(OH)]PF6.cntdot.H2O, [{LRuIII(acac)}2(.mu.-O2H3)](PF6)3, and [{LRuIII(acac)}2(.mu.-O)](PF6)2. Characterization of the mixed-valence species [{LRu(acac)}2(.mu.-…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Aramid and imidazole based polyelectrolytes: physical properties and ternary phase behavior with poly(benzobisthiazole) in methanesulfonic acid

Melinda B. Gieselman、John R. Reynolds1993-10-01Macromolecules

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAramid and imidazole based polyelectrolytes: physical properties and ternary phase behavior with poly(benzobisthiazole) in methanesulfonic acidMelinda B. Gieselman and John R. ReynoldsCite this: Macromolecules 1993, 26, 21, 5633–5642Publication Date (Print):October 1, 1993Pu…

Polymer Nanocomposites and PropertiesConducting polymers and applicationsSynthesis and properties of polymers

Effect of surface chemical groups on energetic heterogeneity of activated carbons

Teresa J. Bandosz、Jacek Jagiełło、J.A. Schwarz1993-10-01Langmuir

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of surface chemical groups on energetic heterogeneity of activated carbonsTeresa J. Bandosz, Jacek Jagiello, and James A. SchwarzCite this: Langmuir 1993, 9, 10, 2518–2522Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published i…

Carbon Nanotubes in CompositesEnergetic Materials and CombustionThermal and Kinetic Analysis

Cofacial bisorganometallic diporphyrins: synthetic control in proton reduction catalysis

James P. Collman、Yunkyoung Ha、Paul S. Wagenknecht 等 5 位作者1993-10-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCofacial bisorganometallic diporphyrins: synthetic control in proton reduction catalysisJames P. Collman, Yunkyoung Ha, Paul S. Wagenknecht, Michel Angel Lopez, and Roger GuilardCite this: J. Am. Chem. Soc. 1993, 115, 20, 9080–9088Publication Date (Print):October 1, 1993Publ…

Electrocatalysts for Energy ConversionPorphyrin and Phthalocyanine ChemistryMetalloenzymes and iron-sulfur proteins

Melt blending of ultra high molecular weight and high density polyethylene: The effect of mixing rate on thermal, mechanical, and morphological properties

Teoman Tinçer、Mehmet Çoşkun1993-10-01Polymer Engineering and Science

Abstract The blends of two different ultra high molecular weight polyethylenes (UHMWPE) and high density polyethylene (HDPE) were prepared in melt at different compositions and mixing rates in Brabender Torque Rheometer. The temperature build‐up due to the internal friction during melt blending was recorded and evalua…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesComposite Material Mechanics

Control of Liquid Crystal Alignment Using Stamped-Morphology Method

Eung Sang Lee、Peter Vetter、Tetsuya Miyashita 等 7 位作者1993-10-01Japanese Journal of Applied Physics

We propose a new method to align liquid crystals using microgrooves that are fabricated by a stamping process. This rubless alignment method has the advantage of accurate control of the pretilt angle and azimuthal surface anchoring energy by means of changing the surface morphology. In this paper we discuss the contro…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsAdvanced Materials and Mechanics

A decanuclear mixed-valent manganese complex with a high spin multiplicity in the ground state

David P. Goldberg、Andréa Caneschi、Stephen J. Lippard1993-10-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA decanuclear mixed-valent manganese complex with a high spin multiplicity in the ground stateDavid P. Goldberg, Andrea Caneschi, and Stephen J. LippardCite this: J. Am. Chem. Soc. 1993, 115, 20, 9299–9300Publication Date (Print):October 1, 1993Publication History Published…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms

Magnetic properties of a layered molecular material comprising manganese hexafluoroacetylacetonate and nitronyl nitroxide radicals

Andréa Caneschi、Dante Gatteschi、Roberta Sessoli1993-10-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic properties of a layered molecular material comprising manganese hexafluoroacetylacetonate and nitronyl nitroxide radicalsAndrea Caneschi, Dante Gatteschi, and Roberta SessoliCite this: Inorg. Chem. 1993, 32, 21, 4612–4616Publication Date (Print):October 1, 1993Publi…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies

Crystal structure of cesium (.mu.-oxo)bis(oxodisulfatovanadate) Cs4(VO)2O(SO4)4

Kurt Nielsen、Rasmus Fehrmann、K. M. Eriksen1993-10-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of cesium (.mu.-oxo)bis(oxodisulfatovanadate) Cs4(VO)2O(SO4)4Kurt Nielsen, Rasmus Fehrmann, and Kim Michael EriksenCite this: Inorg. Chem. 1993, 32, 22, 4825–4828Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published…

Crystal structures of chemical compoundsPolyoxometalates: Synthesis and ApplicationsOrganometallic Compounds Synthesis and Characterization

Equilibrium Phase Diagrams in the Systems PbO–Ag and CuO–Ag

Z.B. Shao、Ke R. Liu、Ling Q. Liu 等 5 位作者1993-10-01Journal of the American Ceramic Society

Silver has played a critical role in the fabrication of metal/ high‐T c superconductor composites. Phase equilibrium in the binary PbO–Ag and CuO–Ag systems has been investigated using differential thermal analysis (DTA), thermogravimetry (TG), and X‐ray diffractometry (XRD) techniques. Composition versus temperature…

Metallurgical Processes and ThermodynamicsChemical and Physical Properties of MaterialsMetallurgical and Alloy Processes

Photophysical processes in aromatic polyimides. Studies with model compounds

Masatoshi Hasegawa、Yoichi Shindo、Tokuko Sugimura 等 8 位作者1993-10-01Journal of Polymer Science Part B Polymer Physics

Abstract Emission mechanism in an aromatic polyimide, PI(BPDA/PDA), derived from biphenyltetracarboxylic dianhydride and p ‐phenylene diamine were studied with ultraviolet visible absorption and fluorescence spectra of a series of the model compounds. The excitation spectrum of the intermolecular charge‐transfer (CT)…

Epoxy Resin Curing ProcessesSynthesis and properties of polymersSilicone and Siloxane Chemistry

Synthesis, structure, and dynamic properties of the lanthanum(III) complex of 1,4,7,10-tetrakis(2-carbamoylethyl)-1,4,7,10-tetraazacyclododecane

Janet R. Morrow、Shahid Amin、Charles H. Lake 等 4 位作者1993-10-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, structure, and dynamic properties of the lanthanum(III) complex of 1,4,7,10-tetrakis(2-carbamoylethyl)-1,4,7,10-tetraazacyclododecaneJanet R. Morrow, Shahid Amin, Charles H. Lake, and Melvyn Rowen ChurchillCite this: Inorg. Chem. 1993, 32, 21, 4566–4572Publication…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Composition range of crystal phase transition of isodimorphism in poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Hiroshi Mitomo、Norio Morishita、Yoshiharu Doi1993-10-01Macromolecules

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComposition range of crystal phase transition of isodimorphism in poly(3-hydroxybutyrate-co-3-hydroxyvalerate)Hiroshi Mitomo, Norio Morishita, and Yoshiharu DoiCite this: Macromolecules 1993, 26, 21, 5809–5811Publication Date (Print):October 1, 1993Publication History Publis…

Polymer crystallization and propertiesbiodegradable polymer synthesis and properties

Cubane-type clusters as potential models for inorganic solid surfaces

Kiyoshi Isobe、A. Yagasaki1993-10-01Accounts of Chemical Research

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCubane-type clusters as potential models for inorganic solid surfacesKiyoshi Isobe and Atsushi YagasakiCite this: Acc. Chem. Res. 1993, 26, 10, 524–529Publication Date (Print):October 1, 1993Publication History Published online1 May 2002Published inissue 1 October 1993https:…

Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation Reactions

Effects of phospholipid adsorption on nonthrombogenicity of polymer with phospholipid polar group

Kazuhíko Ishihara、Hiroko Oshida、Yutaka Endo 等 6 位作者1993-10-01Journal of Biomedical Materials Research

Polymers with phospholipid polar groups, 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers, have excellent nonthrombogenic properties. The effects of adsorption of phospholipids on platelet adhesion and activation on the MPC copolymer with n-butyl methacrylate (BMA) were investigated with particular attention to…

Advanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studies

Effect of Aliovalent Dopants on the Kinetics of Phase Transformation and Ordering in RE 2 O 3 ‐Bi 2 O 3 (RE = Yb, Er, Y, or Dy) Solid Solutions

Kuan-Zong Fung、Jong Chen、Anil V. Virkar1993-10-01Journal of the American Ceramic Society

Bi 2 O 3 ‐based cubic solid solutions containing 20% Er 2 O 3 undergo transformation to a rhombohedral phase when annealed at temperatures 635°C. This transformation is generally very sluggish and is accompanied by a decrease in conductivity. The kinetics of this transformation were enhanced by the addition of CaO and…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsThermal Expansion and Ionic Conductivity

Isolation and characterization of an iron biliverdin-type complex that is formed along with verdohemochrome during the coupled oxidation of iron(II) octaethylporphyrin

Alan L. Balch、Lechosław Latos‐Grażyński、B.C. Noll 等 5 位作者1993-10-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and characterization of an iron biliverdin-type complex that is formed along with verdohemochrome during the coupled oxidation of iron(II) octaethylporphyrinAlan L. Balch, Lechoslaw Latos-Grazynski, Bruce C. Noll, Marilyn M. Olmstead, and Nasser SafariCite this: J.…

Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesPhotochemistry and Electron Transfer Studies

Structure and physical properties of glassy lead vanadates

Sankar Mandal、A. Ghosh1993-10-01Physical review. B, Condensed matter

The structure and physical properties of the lead-vanadate glasses of compositions (${\mathrm{V}}_{2}$${\mathrm{O}}_{5}$${)}_{\mathit{x}}$(PbO${)}_{100\mathrm{\ensuremath{-}}\mathit{x}}$ with x=50--90 mol %, prepared by the roller-quenching technique have been studied. It has been shown by x-ray diffraction, scanning…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsAdvanced Condensed Matter Physics

Crystal Chemistry and Thermal Behavior in the La ( Cr , Ni ) O 3 Perovskite System

Heidi E. Höfer、Wulf F. Kock1993-10-01Journal of The Electrochemical Society

Phase relationships and thermal expansion have been investigated in the La ( Cr , Ni ) O 3 system by x‐ray diffraction at room and at high temperatures, by differential thermal analysis, thermogravimetry, and dilatometry. Special attention was paid to the thermal decomposition behavior of LaNiO 3 in air and flowing ox…

Microwave Dielectric Ceramics SynthesisInorganic Chemistry and MaterialsThermal Expansion and Ionic Conductivity

Correlation functions for ionic motion from NMR relaxation and electrical conductivity in the glassy fast-ion conductor (Li2S)0.56(SiS2)0.44

I. Svare、F. Borsa、D. R. Torgeson 等 4 位作者1993-10-01Physical review. B, Condensed matter

The $^{7}\mathrm{Li}$ NMR spin-lattice relaxation and the electrical conductivity in the typical glassy fast-ion conductor (${\mathrm{Li}}_{2}$S${)}_{0.56}$(${\mathrm{SiS}}_{2}$${)}_{0.44}$ are discussed from models of ${\mathrm{Li}}^{+}$ ionic motion with distributions of activation energies, as well as from stretche…

Material Dynamics and PropertiesGlass properties and applicationsSolid-state spectroscopy and crystallography