Ken‐ichi Sugiura、Atta M. Arif、Durrell K. Rittenberg 等 7 位作者1997-01-01Chemistry - A European Journal
Abstract [MnIIITtBuPP]+[C4(CN)6].‐ · 5PhMe [MnIIITtBuPP = meso‐tetrakis‐(4′‐tert‐butylphenyl)porphinatomanganese(III)] has been prepared and structurally and magnetically characterized. The uniform, linear‐chain (1‐D) coordination polymer comprises alternating cations and anions. The bond lengths in planar ion [C4(CN)…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryLanthanide and Transition Metal Complexes
U. J. Katter、T. W. Hill、Thomas Risse 等 8 位作者1997-01-01The Journal of Physical Chemistry B
The system di- tert -butyl nitroxide (DTBN) adsorbed on a thin film of γ-Al 2 O 3 (111) grown on a NiAl(110) single crystal has been studied with various surface science methods, including TPD, XPS, NEXAFS, and ESR line-shapes analysis. In the monolayer regime, two strong chemisorbed species with adsorption energies o…
Catalytic Processes in Materials ScienceLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies
Ralph Lunkwitz、Carsten Tschierske、Siegmar Diele1997-01-01Journal of Materials Chemistry
Novel liquid crystalline oligomesogens, which consist of five, six or eight calamitic 4-cyanobiphenyl, 2-alkyl-5-phenyl-1,3,4-thiadiazole or 5-octyl-2-phenylpyrimidine units covalently linked by spacers of different length with a cyclotribenzylene central core (CTV derivatives, 2,3,7,8,12,13-hexa-substituted 10,15-dih…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsAdvanced Materials and Mechanics
В.М. Гунько、Е. Ф. Воронин、V.I. Zarko 等 5 位作者1997-01-01Journal of Adhesion Science and Technology
Highly dispersed oxides SiO2, TiO2, ZnO, and TiO2/SiO2 modified by organic [di(ethylene glycol), glycerol, butanol, and methanol] and organosilicon (3-aminopropyltriethoxysilane, hexamethyldisilazane, methacryloyloxymethylenemethyl diethoxysilane, and blend of methylcyclosiloxanes) compounds were studied by IR spectro…
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisInorganic and Organometallic Chemistry
Xiaohui Chen、I. Zanini1997-01-01Journal of the Textile Institute
An experimental investigation is reported on the relations between the structure and mechanical properties of 3D woven orthogonal structures, one of the major types of textile constructions used for composite reinforcements. Tests for mechanical properties relating to tensile, shearing, and bending forces are discusse…
Mechanical Behavior of CompositesTextile materials and evaluationsStructural Analysis and Optimization
M. A. Rivadeneyra、Gabriel Delgado、A. Ramos‐Cormenzana 等 4 位作者1997-01-01Arid Land Research and Management
We investigated the precipitation of carbonates by Deleya halophila in liquid culture media containing different concentrations of marine salt: 2.5%, 7.5%, 12.5%, and 20% (wt/vol). The microorganism was isolated from soils classified as haplic Solonchaks located in arid southeastern Spain. The mineral phases that were…
Calcium Carbonate Crystallization and InhibitionCO2 Sequestration and Geologic InteractionsMicrobial Applications in Construction Materials
Hideo Awaji、Sawao Honda、Tadahiro NISHIKAWA1997-01-01JSME International Journal Series A
An infrared radiation(IR) heating method was used to evaluate thermal shock parameters(thermal shock strength and thermal shock fracture toughness)of float glass and alumina. This technique makes it possible to evaluate the parameters directly from the electric power of the IR heater. In this paper we discuss how the…
Advanced ceramic materials synthesisHigh-Velocity Impact and Material BehaviorAdvanced materials and composites
Neil C. Greenham、Xiaogang Peng、A. Paul Alivisatos1997-01-01AIP conference proceedings
We have prepared simple photovoltaic devices based on composite materials formed by mixing cadmium selenide or cadmium sulfide nanocrystals with the conjugated polymer poly(2-methoxy, 5-(2′-ethyl)-hexyloxy-p-phenylenevinylene) (MEH-PPV). When the surface of the nanocrystals is treated so as to remove the surface ligan…
Organic Electronics and PhotovoltaicsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
Vicente, M.A.、Elsass, Françoise、Molina, Elena 等 4 位作者1997-01-01HAL (Le Centre pour la Communication Scientifique Directe)
International audience
Geological and Geochemical AnalysisClay minerals and soil interactionsGeological and Geophysical Studies Worldwide
Dong Ho Park、Chi‐Feng Cheng、Heyong He 等 4 位作者1997-01-01Journal of Materials Chemistry
A range of mesoporous vanadosilicate molecular sieves with the MCM-41 structure and the atomic ratio Si/V=10–160 have been synthesized using vanadyl sulfate as the source of vanadium. The products were characterized by XRD and 51 V and 29 Si MAS NMR spectroscopy. The increase of the unit-cell parameter (monitored by X…
Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation Reactions
Frank Baumann、Wolfgang Kaim、José A. Olabe 等 5 位作者1997-01-01Journal of the Chemical Society Dalton Transactions
The new complexes [(µ4,η4-TCNX){Os(PR3)2(CO)(H)Cl}4], R = isopropyl, TCNX = tetracyanoquinodimethane [TCNQ, 2,2′-(cyclohexa-2,5-diene-1,4-diylidene)bis(propane-1,3-dinitrile)] or 1,2,4,5-tetracyanobenzene (TCNB), were studied by spectroelectrochemistry in the UV/VIS/NIR and IR regions and by EPR spectroscopy. Both com…
Metal complexes synthesis and propertiesMagnetism in coordination complexesOrganic and Molecular Conductors Research
J. Mack、K. Ortner、Ulrich Abram 等 4 位作者1997-01-01Zeitschrift für anorganische und allgemeine Chemie
Abstract Dichloro‐2‐(N,N‐dimethylaminomethyl)‐phenylgold(III), [Au(damp‐C,N)Cl 2 ], hergestellt durch Umsetzung von [Hg(damp)Cl] mit Na[AuCl 4 ], kristallisiert monoklin, Raumgruppe P2 1 /c mit a = 7,896(3); b = 9,487(2); c = 15,107(6) Å; β = 100,22(3)°, Z = 4. Die Kristallstruktur besteht aus monomeren [Au(damp‐CN)Cl…
Magnetism in coordination complexesOrganic and Molecular Conductors ResearchOrganometallic Compounds Synthesis and Characterization
R.A. Kurbanova、Ramazan Mirzaoğlu、S. B. KURBANOV 等 8 位作者1997-01-01Journal of Adhesion Science and Technology
The adhesion capability of novel functional polystyrenes to metals and their capability to provide corrosion resistance to metals under various conditions have been investigated. The polyfunctional polystyrenes were prepared via reaction of the polystyrene with different functional groups [2-methyl-2,3-epoxy-6-octene-…
Corrosion Behavior and InhibitionEpoxy Resin Curing ProcessesSynthesis and properties of polymers
Jin‐Ho Choy、Yang‐Su Han、Seung‐Joo Kim1997-01-01Journal of Materials Chemistry
A homogeneous and stoichiometric Pb(Zr,Ti)O 3 (PZT) fine powder was prepared by thermal decomposition of the metal oxalate precursor formed by the precipitation reaction of the metallic components in aqueous solution with oxalic acid. Theoretical solubility isotherms of metal oxalates were established as a function of…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Fa‐Nian Shi、Jian Meng、Yufang Ren 等 4 位作者1997-01-01Journal of Materials Chemistry
Three new compounds, AgLnW 2 O 8 (Ln 3+ =Eu, Gd or Tb), have been prepared by a solid-state reaction and crystallize with a scheelite-related monoclinic symmetry. Their IR spectra show absorption transitions in the region 1000–400 cm -1 similar to KLnW 2 O 8 . Broad excitation and emission bands of the tungstate group…
Luminescence Properties of Advanced MaterialsCrystal Structures and PropertiesInorganic Fluorides and Related Compounds
N. Venkatathri、S.G. Hegde、Pattuparambil R. Rajamohanan 等 4 位作者1997-01-01Journal of the Chemical Society Faraday Transactions
The molecular sieve SAPO-35 has been synthesized in a non-aqueous medium for the first time using a new template, hexamethyleneimine. It has been characterized by XRD, SEM, TG–DTA, MAS NMR, FTIR and adsorption techniques. The study indicates that Si replaces mainly the P atoms in the AlPO 4 -35 framework giving rise t…
Molecular Sensors and Ion DetectionPolyoxometalates: Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis
Cornelis A. van Walree、Adriaan W. Maarsman、Albert W. Marsman 等 7 位作者1997-01-01Journal of the Chemical Society Perkin Transactions 2
The first hyperpolarizability β and electronic properties of N,N-dimethylamine and/or nitro-substituted benzylideneanilines and biphenyls are compared with those of conformationally locked model compounds, viz. identically substituted 2-phenyl-3,3-dimethyl-3H-indoles and fluorenes, respectively. Although PM3 semi-empi…
Nonlinear Optical Materials ResearchOrganic Chemistry Cycloaddition ReactionsChemical synthesis and pharmacological studies
I. Ezpeleta、J. M. Rache、Jacques Guéguen 等 4 位作者1997-01-01Journal of Microencapsulation
The influence of some selected factors on the properties of nano- and microparticles obtained from vicilin (storage protein from Pisum sativum L.) has been studied. These systems were prepared by coacervation followed by a cross-linking step with glutaraldehyde. Stabilized vicilin particles could be formed very rapidl…
Nanoparticle-Based Drug DeliveryAdvanced Drug Delivery Systems
Ching-Chao Chang、L.-C. Chien、Robert B. Meyer1997-01-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We report a piezoelectric effect in cholesteric liquid crystalline elastomer gels. When we apply a shear stress to a cholesteric elastomer gel in the direction perpendicular to its helical axis, a polarization can be induced in the direction perpendicular to both the stress and the helix. This experimental observation…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsAdvanced Materials and Mechanics
Zhenghong Qian、Geng Wang、J.M. Sivertsen 等 4 位作者1997-01-01IEEE Transactions on Magnetics
NiZn ferrite thin films with spinel structure have been deposited successfully on glass substrates at a relatively low temperature by means of the Facing Target Sputtering (FTS) technique. In addition to substrate temperature, PO/sub 2//P (O/sub 2/ partial pressure over total sputtering pressure) ratio was found to be…
Magnetic Properties and Synthesis of FerritesMagnetic Properties and ApplicationsSemiconductor materials and interfaces