Dimeric substituted copper phthalocyanine liquid crystals. Synthesis, characterization and magnetic properties
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Hydrothermal synthesis of K2PdSe10. Coexistence of two large interpenetrating three-dimensional frameworks of [Pd(Se4)2]2- and [Pd(Se6)2]2-
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrothermal synthesis of K2PdSe10. Coexistence of two large interpenetrating three-dimensional frameworks of [Pd(Se4)2]2- and [Pd(Se6)2]2-Kang Woo Kim and Mercouri G. KanatzidisCite this: J. Am. Chem. Soc. 1992, 114, 12, 4878–4883Publication Date (Print):June 1, 1992Publica…
Theoretical studies of spin-forbidden radiationless decay in polyatomic systems: insights from recently developed computational methods
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTheoretical studies of spin-forbidden radiationless decay in polyatomic systems: insights from recently developed computational methodsDavid R. YarkonyCite this: J. Am. Chem. Soc. 1992, 114, 13, 5406–5411Publication Date (Print):June 1, 1992Publication History Published onli…
Theory of Single and Multiple Interfaces
Technical preliminaries general form of the surface Green function matching (SGFM) analysis matching analysis for continuous systems matching for discrete systems SGFM for coupled interfaces the geometry of the matching surface the full transfer matrix and SGFM for continuous media transfer matrix and SGFM for discret…
Spectroscopic and theoretical studies on the excited state in diimine dithiolate complexes of platinum(II)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic and theoretical studies on the excited state in diimine dithiolate complexes of platinum(II)Juan A. Zuleta, Joanne M. Bevilacqua, Davide M. Proserpio, Pierre D. Harvey, and Richard EisenbergCite this: Inorg. Chem. 1992, 31, 12, 2396–2404Publication Date (Print)…
Fatty acids in layered metal hydroxides: membrane-like structure and dynamics
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFatty acids in layered metal hydroxides: membrane-like structure and dynamicsMarlon Borja and Prabir K. DuttaCite this: J. Phys. Chem. 1992, 96, 13, 5434–5444Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June 1992https…
Synthesis, characterization, and 1/T1 NMRD profiles of gadolinium(III) complexes of monoamide derivatives of DOTA-like ligands. X-ray structure of the 10-[2-[[2-hydroxy-1-(hydroxymethyl)ethyl]amino]-1-[(phenylmethoxy)methyl]-2-oxoethyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid-gadolinium(III) complex
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and 1/T1 NMRD profiles of gadolinium(III) complexes of monoamide derivatives of DOTA-like ligands. X-ray structure of the 10-[2-[[2-hydroxy-1-(hydroxymethyl)ethyl]amino]-1-[(phenylmethoxy)methyl]-2-oxoethyl]-1,4,7,10-tetraazacyclododecane-1,4,7-t…
Organic template-directed inorganic crystallization: oriented nucleation of barium sulfate under compressed Langmuir monolayers
Langmuir monolayers of n-eicosyl sulfate were shown to influence the nucleation of BaSO<sub>4</sub> grown from supersaturated solutions (S = 30) at room temperature (293 K). Thin, elongated single crystalline plates were nucleated with the (100) face parallel to the plane of the monolayer. Partial matching…
Phase separation in binary hard-core mixtures: An exact result
We prove the existence of a first-order, entropy-driven demixing transition in a simple lattice model for a hard-core mixture. The existence of this transition follows from the fact that this lattice model can be mapped onto an Ising model with nearest-neighbor interactions for which the phase behavior is known. The s…
Properties of trypsin and of acid phosphatase immobilized in sol‐gel glass matrices
Trypsin and acid phosphatase-containing silica sol-gel glasses were obtained by mixing a solution of an enzyme with polyethylene glycol (PEG) 6000 and tetramethoxy orthosilicate at room temperature, followed by gelation and drying. Activity of the immobilized trypsin toward small substrates, such as N-benzoyl-L-argini…
Vacuum microelectronics-1992
Vacuum microelectronics is a new interdisciplinary field utilizing the mechanism of electron emission into a vacuum for devices requiring bulk and surface micromachining. By fabricating arrays of conductive or semiconductive structures that are either gated or ungated, a multitude of devices can be formed that utilize…
Minor groove binding of [Ru(phen)3]2+ to [d(CGCGATCGCG)]2 evidenced by two-dimensional NMR
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMinor groove binding of [Ru(phen)3]2+ to [d(CGCGATCGCG)]2 evidenced by two-dimensional NMRMagdalena Eriksson, Mikael Leijon, Catharina Hiort, Bengt Norden, and Astrid GraeslundCite this: J. Am. Chem. Soc. 1992, 114, 12, 4933–4934Publication Date (Print):June 1, 1992Publicati…
Phase Identification and Electrical Properties in ZnO–Glass Varistors
Ceramic varistors based on ZnO with lead zinc borosilicate glass instead of Bi 2 O 3 were prepared. The effect of sintering conditions on the electrical properties was studied by sintering samples at various temperatures and cooling them at different rates. The sample sintered at 1250°C for 1 h, then furnace cooled, p…
Attachment of Electrons to Molecules at meV Resolution
A selective discussion of electron attachment to molecules is presented with emphasis on recent studies of SF6, carried out with a novel laser photoelectron attachment (LPA) method in the energy range 0·1-170 me V with an effective energy resolution around 0·1 me V near threshold.
On the second-order polarizability of conjugated .pi.-electron molecules with octupolar symmetry: the case of triaminotrinitrobenzene
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the second-order polarizability of conjugated .pi.-electron molecules with octupolar symmetry: the case of triaminotrinitrobenzeneJ. L. Bredas, F. Meyers, B. M. Pierce, and J. ZyssCite this: J. Am. Chem. Soc. 1992, 114, 12, 4928–4929Publication Date (Print):June 1, 1992Pu…
Self‐Assembly of a Cu4 Complex with Coplanar Copper(I) Ions: Synthesis, Structure, and Electrochemical Properties
π-Stacking interactions in the nearly parallel 3,6-bis(2-pyridyl)-pyridazine (dppn) ligands probably account for the distortion of the planar Cu4 unit in 1 from a square to a rhombus. Each Cu atom is surrounded in a tetrahedral fashion by two N atoms from pyridine and two N atoms from pyridazine units; the chelate rin…
Determination of the long‐term hydrolytic stability of polycarbonate engineering resins
Abstract The hydrolytic degradation of polycarbonate resins is a first‐order process in terms of the decrease in average molecular weights under a relative humidity (RH) and temperature. Two analysis procedures have been developed for making life‐cycle predictions of polycarbonate at any combination of humidity and te…
Thermal characteristics of wool fibers
Thermally induced weight loss in the 100–700C range and length changes in the 25–450C range were monitored in wool fibers obtained from three different breeds of sheep, viz. Lincoln, Chokla, and Merino. Merino wool showed higher thermal expansion above its glass transition temperature, a broad and weak melting peak, a…
New techniques for monitoring the insulation quality of in-service HV apparatus
New online monitoring techniques have been developed for use on HV systems. An online testing device was developed to measure partial discharge and dielectric loss angle (DLA) of in-service HV instrument transformers and is used as a fast screening device. A continuous DLA monitor for in-service transformer bushings a…
Floating Zone Crystal Growth and Phase Equilibria: A Review
The thermal‐imaging floating zone technique can be used to grow crystals of yttrium iron garnet (Y 3 Fe 5 O 12 ), aluminum‐doped yttrium orthoferrite (YFe 0.88 Al 0.12 O 12 ), and magnetite (Fe 3 O 4 ), which represent peritectic compounds, solid‐solution crystals, and atmosphere‐sensitive materials, respectively. The…