I. Szymczyk、Halina Abramczyk2004-01-01Pure and Applied Chemistry
Abstract The role played by the peripheral substituent and the solvent on the aggregation and photochemical properties of copper(II) phthalocyanine and copper(II)phthalocyanine-3,4',4'',4'''-tetrasulfonic anion [Cu(tsPc) -4 ] in aqueous solution has been studied by resonance Raman spectroscopy (RRS). The vibrational m…
Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesElectrochemical Analysis and Applications
Wilson Agerico Diño、Hiroshi Nakanishi、Hideaki Kasai 等 5 位作者2004-01-01e-Journal of Surface Science and Nanotechnology
Based on the density functional theory, we investigate and discuss how hydrogen behaves at the edges of graphite sheets/layers, in particular the zigzag edge. Our calculation results show that the zigzag edge is very reactive. It is possible to dissociatively adsorb H2 on these surfaces without any activation barrier…
Graphene research and applicationsHydrogen Storage and MaterialsGraphite, nuclear technology, radiation studies
Yu. V. Petrov、Elena Sitnikova2004-01-01Technical Physics
A new approach to studying the dynamic strength properties of structural materials is demonstrated with fracture of 2024-T3 aircraft aluminum alloy. The central idea of this approach is the incubation time to failure. In [1], experimental data for dynamic fracture of this alloy were analyzed in terms of the classical…
Fatigue and fracture mechanicsHigh-Velocity Impact and Material BehaviorStructural Response to Dynamic Loads
Ryszard Kozłowski、Maria Władyka‐Przybylak、Malgorzata Helwig 等 4 位作者2004-01-01Molecular Crystals and Liquid Crystals
Lignocellulosic natural fibres are an excellent raw materials for production of wide range of composites. Generally, composites based on lignocellulosic particles or fibres can be divided into the following groups:conventional panel-type composites like particleboards, fibreboards, insulating boards, etc.,lignocellulo…
Natural Fiber Reinforced CompositesAdvanced Cellulose Research StudiesLignin and Wood Chemistry
Daniel Tunega、Georg Haberhauer、Martin H. Gerzabek 等 4 位作者2004-01-01Soil Science
Full atomic position optimizations and ab initio molecular dynamics simulations at room temperature were performed in a study of the adsorption of phenoxyacetic acid herbicides on the octahedral surface of a kaolinite layer formed from hydroxyl groups. The studied molecules are bound strongly to the surface hydroxyl g…
Pesticide and Herbicide Environmental StudiesClay minerals and soil interactionsIron oxide chemistry and applications
Chiu-Chih Chiang、Mao‐Chieh Chen、Lain‐Jong Li 等 6 位作者2004-01-01Journal of The Electrochemical Society
This work investigates the thermal stability and physical and barrier properties for three species of amorphous silicon-oxycarbide (α-SiCO) dielectric barrier films, deposited by plasma-enhanced chemical vapor deposition (PECVD), to copper (Cu) diffusion using octamethylcyclotetrasiloxane precursor and helium (He) car…
Semiconductor materials and devicesThin-Film Transistor TechnologiesCopper Interconnects and Reliability
B.D. Stojanović、Valmor Roberto Mastelaro、Santos Paiva 等 4 位作者2004-01-01Science of Sintering
Barium titanates doped with Nb5+, and Y3+, were prepared. The starting powders were synthesized from citrate solutions by the Pechini process and partial Pechini process in two steps. Sintering was performed in the range from 13100 up to 13800C for 2 hours in air atmosphere. The structural study concerning the incorpo…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisX-ray Diffraction in Crystallography
Raigna A. Silva、Françoise Serein‐Spirau、Mohammed Bouachrıne 等 5 位作者2004-01-01Journal of Materials Chemistry
A series of novel soluble conjugated regioregular copolymers (poly(2,5-dialkoxy-p-phenylene thienylenes)) was prepared via palladium-catalyzed Stille coupling reactions. The attachment of ethylene oxide chains to the phenylene rings ((OCH2CH2)nOR; n = 2, R = Me; n = 2, R = Bu; n = 3, R = Me) provided to the polymer in…
Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications
Christel Barbaud、Fabienne Faÿ、Fatoumia Abdillah 等 5 位作者2004-01-01Macromolecular Chemistry and Physics
Abstract Summary: Novel polyester and copolyesters have been prepared by anionic ring‐opening polymerization of racemic 4‐alkyloxycarbonyl‐3,3‐dimethyl‐2‐oxetanones that had been synthesized in five steps from diethyl oxalpropionate used as chemical precursor. The anionic polymerizations, realized in bulk or in soluti…
biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysisChemistry and Chemical Engineering
Xiaoping Shen、Song Gao、Gui Yin 等 5 位作者2004-01-01New Journal of Chemistry
Reaction of K3[Cr(CN)6] with [CuL1](ClO4)2 (L1 = 3,10-dipropyl-1,3,5,8,10,12-hexaazacyclotetradecane) leads to a novel three-dimensional (3-D) cyano-bridged bimetallic assembly [CuL1]2[Cr(CN)6]ClO4·0.5H2O (1), in which each hexacyanochromate(III) ion connects four copper(II) ions using four co-planar CN− groups, which…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
X. J. Chen、Siew Hwa Chan、K.A. Khor2004-01-01Electrochemical and Solid-State Letters
Cyclic voltammetry and potentiometric chrono method were conducted on yttria-stabilized zirconia (YSZ)-supported (LSM) electrode to elucidate the kinetics of electrochemical redox of Mn ions at the LSM/YSZ interface and its effect on the performance of LSM electrode under cathodic polarization. Three electrochemical p…
Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Young Nam Kim、Seung Joo Kim、Eun Kwang Lee 等 6 位作者2004-01-01Journal of Materials Chemistry
Macroporous perovskite manganites La0.7Ca0.3−xSrxMnO3, whose pores are highly ordered, have been prepared by a colloidal templating technique. The pore size was found to be about 400 nm and the wall thickness was in the range of 40–60 nm. As the Sr content increased, the ferromagnetic transition temperature (TC) gradu…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
R. Meyer、J. Rodrı́guez Contreras、A. Petraru 等 4 位作者2004-01-01Integrated ferroelectrics
We report on a novel non-volatile memory concept for resistive information storage. The particular device structure consists of a conductive ferroelectric/non-ferroelectric 2-layer sequence. Resistive switching is observed, by applying a voltage pulses. Our model predicts that the switching correlates with a change of…
Ferroelectric and Piezoelectric MaterialsAdvanced Memory and Neural ComputingElectronic and Structural Properties of Oxides
Itsuki Suto2004-01-01Paleontological Research
Fossil marine diatom resting spore species in the morpho-genus Xanthiopyxis Ehrenberg are described using samples from DSDP Site 338 in the Norwegian Sea, Sites 436 and 438 in the northwest Pacific and from the onland section at Newport Beach, California. Xanthiopyxis is characterized by numerous knobs, spines and bri…
Paleontology and Stratigraphy of FossilsMarine Biology and Ecology ResearchDiatoms and Algae Research
Robin H. A. Ras、József Németh、Cliff T. Johnston 等 5 位作者2004-01-01Physical Chemistry Chemical Physics
To control the molecular organization of octadecyl rhodamine B (RhB18), hybrid Langmuir–Blodgett monolayers containing clay minerals were prepared. The orientation and conformation of the RhB18 molecule were analyzed by polarized attenuated total reflection Fourier transform infrared (ATR–FTIR) spectroscopy and fluore…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistrySpectroscopy and Quantum Chemical Studies
Xiaobo Chen、Yongbing Lou、Clemens Burda2004-01-01International Journal of Nanotechnology
CdSe and CdSe/CdS core/shell nanoparticles were prepared by a one-pot synthesis process. The CdSe/CdS core/shell nanoparticles showed red-shift absorption and emission spectra compared to the CdSe core. An optimal reaction time for CdS to form on the CdSe nanoparticles was evaluated and the highest photoluminescence y…
Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
J. Fröhlich、Dietmar Golombowski、Ralf Thomann 等 4 位作者2004-01-01Macromolecular Materials and Engineering
Abstract Summary: Phenolic alkylimidazolineamides were prepared and applied as modifiers in order to render layered silicates organophilic and to prepare polymeric nanocomposites. The imidazolineamine, 2‐{2‐[heptadec‐8‐enyl]‐4,5‐dihydro‐1‐imidazol‐1‐yl}‐1‐ethaneamine (IA), was reacted in bulk with one of the two pheno…
Polymer Nanocomposites and PropertiesSynthesis and properties of polymersSilicone and Siloxane Chemistry
María Teresa Buscaglia、Vincenzo Buscaglia、Paolo Ghigna 等 7 位作者2004-01-01Physical Chemistry Chemical Physics
Er-doped BaTiO3 samples with nominal compositions BaEr0.08Ti0.92O2.96 and Ba0.96Er0.08Ti0.96O3 have been analyzed with Er–LIII edge XAFS. The first sample shows predominant Er substitution on the Ti site of the perovskite structure, the second one shows almost equal occupancy of Er on Ba and Ti sites, thus assessing t…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Si Jae Park、Sang Yup Lee2004-01-01Humana Press eBooks
Biosynthesis of polyhydroxyalkanoates (PHAs) consisting of 3-hydroxy-alkanoates (3HAs) of 4 to 10 carbon atoms was examined in metabolically engineered Escherichia coli strains. When the fadA and/or fadB mutant E. coli strains harboring the plasmid containing the Pseudomonas sp. 61-3 phaC2 gene and the Ralstonia eutro…
biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
Ginny Wang、C. A. Hsieh、Dah‐Shyang Tsai 等 5 位作者2004-01-01Journal of Materials Chemistry
Selective and blanket growth of ruthenium dioxide (RuO2) nanorods have been achieved in chemical vapor deposition (CVD) using bis(ethylcyclopentadienyl)ruthenium. Area-selective growth is demonstrated on a substrate which consists of patterned SiO2 as the non-growth surface and LiNbO3(100) or Zn/Si as the growth surfa…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials