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Binuclear iron system ferromagnetic in three oxidation states: synthesis, structures, and electronic aspects of molecules with a Fe2(OR)2 bridge unit containing Fe(III,III), Fe(III,II), and Fe(II,II)

Barry S. Snyder、George S. Patterson、A. J. Abrahamson 等 4 位作者1989-07-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBinuclear iron system ferromagnetic in three oxidation states: synthesis, structures, and electronic aspects of molecules with a Fe2(OR)2 bridge unit containing Fe(III,III), Fe(III,II), and Fe(II,II)Barry S. Snyder, George S. Patterson, Andrew J. Abrahamson, and Richard H. H…

Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

Metastable aluminum chloride, AlCl, as a solid and in solution

Matthias Tacke、Hansgeorg Schnoeckel1989-07-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetastable aluminum chloride, AlCl, as a solid and in solutionMatthias Tacke and Hansgeorg SchnoeckelCite this: Inorg. Chem. 1989, 28, 14, 2895–2896Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Published inissue 1 July 1989https://pubs.ac…

Ionic liquids properties and applicationsMesoporous Materials and CatalysisAmmonia Synthesis and Nitrogen Reduction

Ion bombardment of polyimide films

Bonnie Bachman、M. J. Vasile1989-07-01Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

Surface modification techniques such as wet chemical etching, oxidizing flames, and plasma treatments (inert ion sputtering and reactive ion etching) have been used to change the surface chemistry of polymers and improve adhesion. With an increase in the use of polyimides for microelectronic applications, the techniqu…

Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchPolymer Nanocomposite Synthesis and Irradiation

New liquid-crystalline compounds with negative dielectric anisotropy

Volker Reiffenrath、Joachim Krause、H. J. Plach 等 4 位作者1989-07-01Liquid Crystals

Until now, liquid-crystalline compounds with high negative dielectric anisotropy were usually realized by a lateral cyano group. A drawback to these cyano substituted liquid crystals, namely the considerable increase in the viscosity and the reduction of the thermodynamic stability of the mesophase, has been circumven…

Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern FormationSynthesis and properties of polymers

Fracture Behavior of Open‐Cell Ceramics

Rasto Brezny、David J. Green1989-07-01Journal of the American Ceramic Society

Cellular structures are commonly used by nature as a means of optimizing the strength‐to‐weight ratio of a body. Cellular ceramics may have potential in structural applications requiring a high modulus‐to‐weight ratio. The models that are used to predict the mechanical behavior of these materials describe them as an i…

Advanced ceramic materials synthesisCellular and Composite StructuresRecycling and utilization of industrial and municipal waste in materials production

Long-range electron transfer between tyrosine and tryptophan in peptides

M. Faraggi、Michael R. DeFelippis、Michael H. Klapper1989-07-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLong-range electron transfer between tyrosine and tryptophan in peptidesM. Faraggi, Michael R. DeFelippis, and Michael H. KlapperCite this: J. Am. Chem. Soc. 1989, 111, 14, 5141–5145Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Published…

Photochemistry and Electron Transfer StudiesClick Chemistry and ApplicationsPhotochromic and Fluorescence Chemistry

Pillaring of a layered double hydroxide by polyoxometalates with Keggin-ion structures

Taehyun Kwon、Thomas J. Pinnavaia1989-07-01Chemistry of Materials

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPillaring of a layered double hydroxide by polyoxometalates with Keggin-ion structuresTaehyun Kwon and Thomas J. PinnavaiaCite this: Chem. Mater. 1989, 1, 4, 381–383Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Published inissue 1 July 19…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsLayered Double Hydroxides Synthesis and Applications

Tracer diffusion in concentrated colloidal dispersions. III. Mean squared displacements and self-diffusion coefficients

W. van Megen、S. M. Underwood1989-07-01The Journal of Chemical Physics

The incoherent dynamic structure factor Fs has been measured on concentrated dispersions of particles with interactions approximating hard spheres. The particle mean squared displacements and self-diffusion coefficients are obtained from Fs at times and scattering vectors where the Gaussian approximation (for Fs ) is…

Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesAdsorption, diffusion, and thermodynamic properties of materials

Synthesis and chemistry of homocubanes, bishomocubanes, and trishomocubanes

Alan P. Marchand1989-07-01Chemical Reviews

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and chemistry of homocubanes, bishomocubanes, and trishomocubanesAlan P. MarchandCite this: Chem. Rev. 1989, 89, 5, 1011–1033Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Published inissue 1 July 1989https://pubs.acs.org/doi/10.…

Magnetism in coordination complexesMetal-Catalyzed Oxygenation MechanismsCardiovascular Issues in Pregnancy

Topological and bonding defects in vitreous silica surfaces

Bradley P. Feuston、Stephen H. Garofalini1989-07-01The Journal of Chemical Physics

A model structure for an annealed silica surface was obtained through the molecular dynamics simulation technique employing three-body interaction potentials. Nonbridging oxygen and edge-sharing tetrahedra were found to form on the oxygen-terminated surface with three-coordinated silicon, three-coordinated oxygen, and…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhotonic Crystals and Applications

Induction of Liquid Crystalline Phases: Formation of Discotic Systems by Doping Amorphous Polymers with Electron Acceptors

Helmut Ringsdorf、Renate Wüstefeld、Elfriede Zerta 等 5 位作者1989-07-01Angewandte Chemie International Edition in English

Liquid crystalline behavior and molecular miscibility – in amorphous discoid polymers, and mixtures thereof, can both be induced by CT interactions with a low molecular disk-shaped electron acceptor such as trinitrofluorenone (TNF). The properties of these induced discotic phases can be varied easily and over a wide r…

Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsNonlinear Optical Materials Research

Ferroelectrics for nonvolatile RAMs

D. Bondurant、Fred P. Gnadinger1989-07-01IEEE Spectrum

The structure and operation of ferroelectric thin-film memory capacitors for use in nonvolatile random-access memory applications are described. The search for the ideal ferroelectric material for ferro-electronic memory applications is examined. Possible military and nonmilitary applications of these memories are not…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesFerroelectric and Negative Capacitance Devices

2SrO · 3Al2 O 3 : Eu2 + and 1.29 ( Ba , Ca ) O , 6Al2 O 3 : Eu2 + : Two New Blue‐Emitting Phosphors

B.M.J. Smets、Jan Rutten、G. Hoeks 等 4 位作者1989-07-01Journal of The Electrochemical Society

In the system SrO ‐ Al 2 O 3 a new compound was discovered with composition 2 SrO · 3 Al 2 O 3 (SAL); its structure is related to the one of 4 SrO · 7 Al 2 O 3 (SAE). The aluminate 1.29 ( Ba , Ca ) O , 6 Al 2 O 3 (BAL) belongs to the β‐alumina type compounds and is closely related to BaMgAl 10 O 17 (BAM). The compound…

Luminescence Properties of Advanced MaterialsAcoustic Wave Resonator TechnologiesAmmonia Synthesis and Nitrogen Reduction

Evidence for disorder-induced vibrational mode coupling in thin amorphous SiO2 films

P. Lange1989-07-01Journal of Applied Physics

Infrared spectroscopy was employed to characterize thermal SiO2 layers down to 15 nm thickness. From these measurements, performed in transmission mode under a 30° angle of incidence, we obtained a multiple resonance structure on the high-energy side of the main Si-O stretching vibration at 1075 cm−1. Aside from a lon…

Glass properties and applicationsPhotorefractive and Nonlinear OpticsNonlinear Optical Materials Studies

Chemistry and physics of the novel molecular-based compound exhibiting a spontaneous magnetization below Tc = 14 K, MnCu(obbz).cntdot.1H2O (obbz = oxamidobis(benzoato)). Comparison with the antiferromagnet MnCu(obbz).cntdot.5H2O. Crystal structure and magnetic properties of NiCu(obbz).cntdot.6H2O

Keitaro Nakatani、Jean Yves Carriat、Yves Journaux 等 9 位作者1989-07-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry and physics of the novel molecular-based compound exhibiting a spontaneous magnetization below Tc = 14 K, MnCu(obbz).cntdot.1H2O (obbz = oxamidobis(benzoato)). Comparison with the antiferromagnet MnCu(obbz).cntdot.5H2O. Crystal structure and magnetic properties of…

Physics of Superconductivity and MagnetismMagnetic properties of thin filmsMagnetism in coordination complexes

Homogeneous nucleation of diamond powder in the gas phase

Michael Frenklach、Robert J. Kematick、D.R. Huang 等 7 位作者1989-07-01Journal of Applied Physics

Homogeneous nucleation of diamond powder is reported. The experiments were performed in a low-pressure microwave-plasma reactor. The deposits were collected downstream of the reaction zone and subjected to wet oxidation to remove nondiamond carbons. The residues were analyzed by optical and electron microscopy, electr…

High-pressure geophysics and materialsDiamond and Carbon-based Materials ResearchAdvanced materials and composites

Formation of crystals in solutions

A. A. Chernov1989-07-01Contemporary Physics

Growth of high quality crystals has played an important role in sophisticated, modern- day technologies and in recent advances in physics. It has also provided examples in the study of self-organizing dissipative structures. This paper reviews the science of crystal growth and discusses recent data, particularly with…

Solidification and crystal growth phenomenaCrystallization and Solubility Studiesnanoparticles nucleation surface interactions

Synthesis and characterization of a soluble oxide inclusion complex, [CH3CN.cntnd.(V12O324-)]

Victor W. Day、W. G. Klemperer、Omar M. Yaghi1989-07-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of a soluble oxide inclusion complex, [CH3CN.cntnd.(V12O324-)]V. W. Day, W. G. Klemperer, and O. M. YaghiCite this: J. Am. Chem. Soc. 1989, 111, 15, 5959–5961Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Pub…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry

Electrical Conductivity and Seebeck Coefficient of Nonstoichiometric La1 − x Sr x CoO3 − δ

Junichiro Mizusaki、Junji Tabuchi、Takashi Matsuura 等 5 位作者1989-07-01Journal of The Electrochemical Society

The conductivity and Seebeck coefficient of the perovskite‐type oxides La 1 − x Sr x CoO 3 − δ ( x = 0 – 0.7 ) were measured in 10 – 5 − 1 atm O 2 gas at temperatures 25°–1000°C. The results are discussed in relation to the lattice‐parameter and oxygen non‐stoichiometry. Close relationships were found between the temp…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Thin film retardation plate by oblique deposition

Tomoyoshi Motohiro、Yasunori Taga1989-07-01Applied Optics

The birefringent property of obliquely deposited metal oxides was studied with a view to applying it to optical retardation plates. By finding favorable conditions to form transparent films of large retardation and low opacity, we developed homogeneous quarterwave plates with a bilayered structure 60 x 250 mm in size…

Photonic Crystals and ApplicationsOptical Coatings and GratingsSurface Roughness and Optical Measurements