Materials Literature
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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:…
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…
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…
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.…
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…
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…
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…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and characterization of a macrocyclic tetraaryltetraiodonium compound, cyclo(Ar4I4)4+.cntdot.4X-. A unique, charged, cationic molecular boxPeter J. Stang and Viktor V. ZhdankinCite this: J. Am. Chem. Soc. 1993, 115, 21, 9808–9809Publication Date (Print):October 1…
A simple set of equations is derived for predicting the temperature distribution and radiative energy flow in a semitransparent layer consisting of an arbitrary number of laminated sublayers that absorb, emit, and scatter radiation. Each sublayer can have a different refractive index and optical thickness. The plane c…
Reciprocating sliding friction experiments in humid air and in dry nitrogen and unidirectional sliding friction experiments in ultrahigh vacuum were conducted with a natural diamond pin in contact with microwave-plasma-deposited diamond films. Diamond films with a surface roughness (R rms) ranging from 15 to 160 nm we…
Work by previous investigators has shown that BaTiO 3 films can be synthesized from solution over temperature ranges from 80°C to greater than 200°C. In the present work, electrically insulating crystalline films of BaTiO 3 have been electrochemically deposited on titanium substrates at temperatures as low as 55°C. Au…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and ion selectivity of conformers derived from hexahomotrioxacalix[3]areneKoji Araki, Norifumi Hashimoto, Hideyuki Otsuka, and Seiji ShinkaiCite this: J. Org. Chem. 1993, 58, 22, 5958–5963Publication Date (Print):October 1, 1993Publication History Published online1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThird-order nonlinear optical properties of polymorphs of oxotitanium phthalocyanineHari Singh Nalwa, Toshiro Saito, Atsushi Kakuta, and Takao IwayanagiCite this: J. Phys. Chem. 1993, 97, 41, 10515–10517Publication Date (Print):October 1, 1993Publication History Published on…
A comprehensive thermodynamic model has been developed to determine the reaction conditions favoring hydro‐thermal synthesis of lead titanate (PbTiO 3 ). The model combines standard‐state thermodynamic data for solid and aqueous species and an excess Gibbs energy model to account for the nonideality of the solution. T…
As a result of their different symmetry, the four structural isomers of the title compound (the C4h isomer 1 is depicted on the right) could be characterized by 1H NMR spectroscopy. With these complexes the complete chromatographic separation of the four structural isomers of tetrasubstituted metal phthalocyanines was…
Light-induced charge separation, rapid intrarotaxane electron transfer over a short distance, migration of the two rotaxane components relative to each other, and a slow intrarotaxane electron transfer over a longer distance are the steps that enable molecular shuttle motion (see scheme on the right). Ferrocene, bipyr…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
A perovskitelike compound ${\mathrm{LaTiO}}_{3}$ shows insulating or barely metallic behavior depending on a slight (\ensuremath{\le}0.04) deviation of the Ti valence (+3) arising from nonstoichiometry of La and/or oxygen. In order to investigate electronic properties of the specimens in the very vicinity of the Mott…
The head-to-head self assembly of two [CoAgL2]3+ units in the solid state results in a tetranuclear complex (shown on the right), which is not held together by AgAg interactions, but by stacking interactions between pyridine rings. This and the preceeding communication show that supramolecular complex chemistry is bo…
We have studied the dielectric behavior in the antiferroelectric SmCA* phase of 4-(1-methyl-heptyloxycarbonyl)phenyl 4'-octyloxybiphenyl-4-carboxylate (MHPOBC). Two dielectric relaxations were recognized without a dc field in SmCA*. The lower-frequency relaxation is attributed to the rotation around the short axis of…