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Photochemically reactive polymers. Synthesis, characterization, and photochemistry of a polyurea containing a Cp2Mo2(CO)6 molecule along the polymer backbone and of poly(ether urethane) copolymers with Cp2Mo2(CO)6 and Cp2Fe2(CO)4 molecules along the polymer backbone

Steve C. Tenhaeff、David R. Tyler1992-04-01Organometallics

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemically reactive polymers. Synthesis, characterization, and photochemistry of a polyurea containing a Cp2Mo2(CO)6 molecule along the polymer backbone and of poly(ether urethane) copolymers with Cp2Mo2(CO)6 and Cp2Fe2(CO)4 molecules along the polymer backboneSteve C.…

Corrosion Behavior and InhibitionConducting polymers and applicationsPolyoxometalates: Synthesis and Applications

Mesophase behavior in thermotropic polyethers based on the semi-flexible mesogen 1-(4-hydroxyphenyl)-2-(2-methyl-4-hydroxyphenyl)ethane

Michael Yandrasits、Stephen Z. D. Cheng、Anqiu Zhang 等 6 位作者1992-04-01Macromolecules

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMesophase behavior in thermotropic polyethers based on the semi-flexible mesogen 1-(4-hydroxyphenyl)-2-(2-methyl-4-hydroxyphenyl)ethaneMichael A. Yandrasits, Stephen Z. D. Cheng, Anqiu Zhang, Jinlong Cheng, Bernhard Wunderlich, and Virgil PercecCite this: Macromolecules 1992…

Liquid Crystal Research AdvancementsPolymer crystallization and propertiesSynthesis and properties of polymers

Primary structure, physicochemical properties, and chemical modification of NAD(+)-dependent D-lactate dehydrogenase. Evidence for the presence of Arg-235, His-303, Tyr-101, and Trp-19 at or near the active site.

Sunil Kochhar、Peter Hunziker、Phaik Leong-Morgenthaler 等 4 位作者1992-04-01Journal of Biological Chemistry

The NAD(+)-dependent D-lactate dehydrogenase was purified to apparent homogeneity from Lactobacillus bulgaricus and its complete amino acid sequence determined. Two gaps in the polypeptide chain (10 residues) were filled by the deduced amino acid sequence of the polymerase chain reaction amplified D-lactate dehydrogen…

Enzyme Structure and FunctionAmino Acid Enzymes and MetabolismBiochemical and Molecular Research

Sol—Gel Synthesis of Strontium‐Doped Lanthanum Manganite

S. Bilger、E. Syskakis、Aristides Naoumidis 等 4 位作者1992-04-01Journal of the American Ceramic Society

Strontium‐doped lanthanum manganite powders were prepared using a peroxide acetate salt based solution. The stable sol was peptized by reacting ammonium hydroxide with the precursor solution. The amorphous dried gel powders exhibit a high energy level, due to their high cations coordination and small particles, to dev…

Ferroelectric and Piezoelectric MaterialsGlass properties and applicationsMagnetic and transport properties of perovskites and related materials

Failure Waves in Glass

Stephan Bless、N. S. Brar、G. I. Kanel 等 4 位作者1992-04-01Journal of the American Ceramic Society

Failure waves have been recently observed in glass plates and rods struck by high‐speed projectiles. These waves propagate into material that has been prestressed by a compressive shock. The wave propagation speed exceeds the maximum crack speed and is not constant. Behind the failure wave there is a total loss of ten…

High-Velocity Impact and Material BehaviorTraumatic Ocular and Foreign Body InjuriesIon-surface interactions and analysis

Charge transport in molecular solids: dynamic and static disorder

V. M. Kenkre、David H. Dunlap1992-04-01Philosophical Magazine B

Recent controversial issues in charge transport in molecular solids are discussed, with focus on the effects of static and dynamic disorder. The situation in ordered solids such as aromatic hydrocarbon crystals is reviewed with attention to the nature of charge carriers, and the theoretical development that led to the…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsOrganic and Molecular Conductors Research

Mechanism of ultraviolet and electron bonding of perfluoropolyethers

G.H. Vurens、Christopher S. Gudeman、Li-Shin Lin 等 4 位作者1992-04-01Langmuir

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of ultraviolet and electron bonding of perfluoropolyethersG. H. Vurens, C. S. Gudeman, L. J. Lin, and J. S. FosterCite this: Langmuir 1992, 8, 4, 1165–1169Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Published inissue 1 April…

Synthesis and properties of polymers

Comparison and analysis of intrinsic kinetics and effectiveness factors for the catalytic reduction of nitrogen oxide (NO) with ammonia in the presence of oxygen

John Marangozis1992-04-01Industrial & Engineering Chemistry Research

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison and analysis of intrinsic kinetics and effectiveness factors for the catalytic reduction of nitrogen oxide (NO) with ammonia in the presence of oxygenJohn MarangozisCite this: Ind. Eng. Chem. Res. 1992, 31, 4, 987–994Publication Date (Print):April 1, 1992Publicati…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsIndustrial Gas Emission Control

Model-independent determination of the surface scattering-length-density profile from specular reflectivity data

Jan Skov Pedersen1992-04-01Journal of Applied Crystallography

An approach for analysing neutron and X-ray specular reflectivity data from stratified media having variation in the scattering-length density near the surface is described. The method has its origin in small-angle scattering and it is composed of two steps: (i) indirect Fourier transformation [Glatter (1977). J. Appl…

Zeolite Catalysis and SynthesisSpectroscopy and Quantum Chemical StudiesX-ray Diffraction in Crystallography

Intermediate liquid crystalline phases in the binary system C16TACl-H2O: an NMR and low-angle x-ray diffraction study

Ulf Henriksson、Eunice S. Blackmore、G. J. T. Tiddy 等 4 位作者1992-04-01The Journal of Physical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntermediate liquid crystalline phases in the binary system C16TACl-H2O: an NMR and low-angle x-ray diffraction studyUlf Henriksson, Eunice S. Blackmore, Gordon J. T. Tiddy, and Olle SoedermanCite this: J. Phys. Chem. 1992, 96, 9, 3894–3902Publication Date (Print):April 1, 1…

Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMolecular spectroscopy and chirality

The X-ray diffraction station at the ADONE wiggler facility: preliminary results (including crystal perfection)

Marcello Colapietro、G. Cappuccio、C. Marciante 等 6 位作者1992-04-01Journal of Applied Crystallography

The single-crystal X-ray diffractometer installed at the PWA Laboratory in Frascati is described. The Huber four-circle goniometer is controlled by an IBM-compatible personal computer by means of a plug-in board interface based on the LSI chip Am9513. The program CS running under MS-DOS performs a wide variety of oper…

Enzyme Structure and FunctionX-ray Spectroscopy and Fluorescence AnalysisX-ray Diffraction in Crystallography

Polymerization mechanism and physicochemical properties of electrochemically prepared polyindole tetrafluoroborate

Kyung Moon Choi、Chung Yub Kim、Keu Hong Kim1992-04-01The Journal of Physical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization mechanism and physicochemical properties of electrochemically prepared polyindole tetrafluoroborateKyung Moon Choi, Chung Yub Kim, and Keu Hong KimCite this: J. Phys. Chem. 1992, 96, 9, 3782–3788Publication Date (Print):April 1, 1992Publication History Publish…

Electrochemical sensors and biosensorsConducting polymers and applicationsAnalytical Chemistry and Sensors

An electrochromic device based on polyaniline and prussian blue

Eliana Aparecida de Rezende Duek、Marco‐A. De Paoli、Marina Mastragostino1992-04-01Advanced Materials

Variable light‐transmission electrochromic devices based on the complimentary mixture of polyaniline and ferric ferrcyanide (prussian blue) are presented. Various configurations for th devices are discussed and the factors which can be manipulated in order to increase the efficiency of the devices are considered.

Conducting polymers and applicationsTransition Metal Oxide NanomaterialsAnalytical Chemistry and Sensors

The first nickel(II) alternating chain with two different end-to-end azido bridges

Ramón Vicente、Albert Escuer、Joan Ribas 等 4 位作者1992-04-01Inorganic Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe first nickel(II) alternating chain with two different end-to-end azido bridgesRamon Vicente, Albert Escuer, Joan Ribas, and Xavier SolansCite this: Inorg. Chem. 1992, 31, 9, 1726–1728Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Publ…

Metal complexes synthesis and propertiesMagnetism in coordination complexesMolecular Junctions and Nanostructures

Resonance Raman characterization of polarons and bipolarons in sodium-doped poly(p-phenylenevinylene)

Akira Sakamoto、Yukio Furukawa、Mitsuo Tasumi1992-04-01The Journal of Physical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResonance Raman characterization of polarons and bipolarons in sodium-doped poly(p-phenylenevinylene)Akira Sakamoto, Yukio Furukawa, and Mitsuo TasumiCite this: J. Phys. Chem. 1992, 96, 9, 3870–3874Publication Date (Print):April 1, 1992Publication History Published online1 M…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsSolid-state spectroscopy and crystallography

Third-order nonlinear optical properties of conjugated rigid-rod polyquinolines

Ashwini K. Agrawal、Samson A. Jenekhe、Herman Vanherzeele 等 4 位作者1992-04-01The Journal of Physical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThird-order nonlinear optical properties of conjugated rigid-rod polyquinolinesAshwini K. Agrawal, Samson A. Jenekhe, Herman Vanherzeele, and Jeffrey S. MethCite this: J. Phys. Chem. 1992, 96, 7, 2837–2843Publication Date (Print):April 1, 1992Publication History Published on…

Organic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistryNonlinear Optical Materials Research

Ferromagnetic interaction in poly(m-aniline): Electron spin resonance and magnetic susceptibility

Kazunari Yoshizawa、Kazuyoshi Tanaka、Tokio Yamabe 等 4 位作者1992-04-01The Journal of Chemical Physics

Ferromagnetic interaction among the spins in poly(m-aniline) has been suggested by electron spin resonance and magnetic susceptibility measured at low temperatures. From the g-value analysis, these spins are found to be located on nitrogens although they are in some degree delocalized on phenyl rings. Doping of this p…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsElectron Spin Resonance Studies

Modification of electrode surface with semiconductor colloids and its sensitization with chlorophyll a

Surat Hotchandani、Prashant V. Kamat1992-04-01Chemical Physics Letters

The surface of an optically transparent electrode has been modified with colloidal particles of ZnO and CdS. Chlorophyll a electrodeposited on these modified electrode surfaces is capable of injecting electrons from its excited state into the conduction band of the semiconductor. The role of the coupled semiconductor…

TiO2 Photocatalysis and Solar CellsQuantum Dots Synthesis And PropertiesElectrochemical Analysis and Applications

The grafting of maleic anhydride on high density polyethylene in an extruder

K. J. Ganzeveld、L. P. B. M. Janssen1992-04-01Polymer Engineering and Science

Abstract The grafting of maleic anhydride (MAH) on high density polyethylene in a counter‐rotating twin screw extruder has been studied. As the reaction kinetics appear to be affected by mass transfer, good micro mixing in the extruder is important. Due to the competing mechanisms of increasing mixing and decreasing r…

Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesInjection Molding Process and Properties

Dielectric response of ferroelectric thin films on non-metallic electrodes

M. Sayer、Abhai Mansingh、Aman Arora 等 4 位作者1992-04-01Integrated ferroelectrics

The dielectric response of thin films of perovskite ferroelectrics fabricated on electrodes such as indium tin oxide is calculated as a function of frequency, film & barrier layer thickness, and dielectric constant using an equivalent circuit model based on properties of the bulk, the electrode and a series resistance…

ZnO doping and propertiesFerroelectric and Piezoelectric MaterialsAcoustic Wave Resonator Technologies