Materials Literature
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The nucleation of diamond on highly oriented pyrolytic graphite (HOPG) substrates using hot-filament-assisted chemical-vapor deposition has been studied. Significant differences were observed between the basal {0001} and prism plane {hk*0} surfaces, and for various pretreatments of these surfaces. Observed nucleation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPartial oxidation of methane: the role of surface reactionsDaniel J. Thomas, Rene Willi, and Alfons BaikerCite this: Ind. Eng. Chem. Res. 1992, 31, 10, 2272–2278Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October…
The influence of Co, Cd, and Zn ions on the voltammetric behavior of the nickel hydroxide electrode in binary and ternary metal hydroxide layers in and was investigated. The presence of Co hydroxide increases the reversibility of the Ni(II)/Ni(III) electrochemical reaction and hinders aging effects involving unstable…
Abstract The morphology of blends of styrenic polymers in a matrix of 75% Nylon‐6 prepared in a Brabender Plasti‐Corder was examined by scanning electron microscopy. Styrene/acrylonitrile copolymers (SAN) form smaller particles as the AN level increases owing to the corresponding decrease in the SAN–polyamide interfac…
A Pt single crystal of cylindrical shape (axis II [001]) whose surface exhibits all orientations of the [001] zone has been used to study coupling effects between orientations which exhibit kinetic oscillations in catalytic CO oxidation. On the clean surface, one can distinguish between an orientational range in betwe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelationship between birefringence and the structure of ordered block copolymer materialsN. P. Balsara, B. A. Garetz, and H. J. DaiCite this: Macromolecules 1992, 25, 22, 6072–6074Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published…
This paper discusses the third-order nonlinear optical (NLO) properties of metal-free, lead and transition metal phthalocyanines, as well as scandium, yttrium and lanthanide bisphthalocyanines measured by time-resolved degenerate four-wave mixing at 1064 nm. The study focuses on the structure-property relationships an…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganometallic nonlinear optical polymers. 2. Synthesis of main-chain organometallic polymers and a structural study of ferrocene NLO-phoresMichael E. Wright and Edward G. ToplikarCite this: Macromolecules 1992, 25, 22, 6050–6054Publication Date (Print):October 1, 1992Public…
A new series with a chiral tolane core has been synthesized. These materials belong to the optically active series: 3-fluoro-4-[(R) or (S)-1-methylheptyloxy]4′-(4″-alkyloxy-3″-fluorobenzoyloxy)tolanes (nFBTFO1M7). For the first time, the helical SA* phase or TGBA phase is found in all of the derivatives from heptyloxy…
Abstract μ-Alkoxo-bridged dinuclear and tetranuclear manganese(III) complexes with 1,5-bis(salicylideneamino)-3-pentanol (H3L), [Mn2(L)(CH3O)Cl2(CH3OH)2] (1), [Mn2(L)(CH3O)(CH3COO)(CH3OH)2]X (X = Br (2), I (3)), [Mn2(L)(CH3O)(CH3COO)(CH3OH)Y] (Y = NCS (4), N3 (5), ClO4 (6)), [Mn2(L)(CH3O)(NCO)2(H2O)2] (7), and [Mn4(L)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptimized synthesis, structure, and solution dynamics of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis(methylenephosphonic acid) (H8DOTP)Istvan Lazar, Duane C. Hrncir, Won Dae Kim, Garry E. Kiefer, and A. Dean SherryCite this: Inorg. Chem. 1992, 31, 21, 4422–4424Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMordenite acidity: dependence on the silicon/aluminum ratio and the framework aluminum topology. 2. Acidity investigationsHelmut Stach, Jochen Jaenchen, Hans Georg Jerschkewitz, Ursula Lohse, Barbara Parlitz, and Michael HungerCite this: J. Phys. Chem. 1992, 96, 21, 8480–848…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA stable dinitrogen complex of a ruthenium cofacial diporphyrinJames P. Collman, James E. Hutchison, Michel Angel Lopez, and Roger GuilardCite this: J. Am. Chem. Soc. 1992, 114, 21, 8066–8073Publication Date (Print):October 1, 1992Publication History Published online1 May 20…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Eero Noponen, Jari Turunen, and Antti Vasara, "Parametric optimization of multilevel diffractive optical elements by electromagnetic theory," Appl. Opt…
Abstract Non‐planar conformational distortions have recently been implicated in the biological activity of porphyrins and related tetrapyrroles in proteins, and several studies have used highly substituted porphyrins to model these nonplanar conformational distortions. Several aspects of non‐planarity in the highly su…
Abstract Unsymmetrical phthalocanines ( 5–7 ) with a single macrocyclic substituent are synthesized by the reaction of the boron complex of phthalonitrile ( 1 ) with the iminoisoindoline derivatives 2–4 of macrocyclic compounds, i.e. 15‐crown‐5, monoaza‐15‐crown‐5, and tetraazacyclotetradecane. The monomacrocycle‐subs…
A systematic study of the dielectric relaxation phenomenon has been carried out for ceramics with compositions derived from barium titanate in the frequency and temperature ranges 1 MHz–1 GHz and 250–500 K, respectively. Whatever the composition may be, a minimum of the relaxation frequency and a maximum of the dielec…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure and properties of molybdenum(IV,V) arenethiolates with a neighboring amide group. Significant contribution of NH.cntdot..cntdot..cntdot.S hydrogen bond to the positive shift of redox potential of Mo(V)/Mo(IV)Norikazu Ueyama, Takaaki Okamura, and Akira NakamuraCite…
This paper introduces a new solid oxide fuel cell system using a tubular cell. We have developed a computer program for a tubular solid oxide fuel cell incorporating an inner reforming process. This program enables us to estimate the distribution of the output current density, the gas density, and the temperature dist…
An electric field-temperature ( E-T ) phase diagram has been drawn for several binary mixtures of antiferroelectric liquid crystals using conoscopic observation. All the possible phases are SmA-SmC α * -SmC * -new antiferroelectric phase-new ferrielectric phase-SmC γ * -new ferrielectric phase-SmC A * , some of which…