Toshikatsu Takanami、Atsushi Wakita、Jun Matsumoto 等 5 位作者2008-11-19Chemical Communications
An efficient one-pot procedure which converts 5,15-disubstituted porphyrins into their corresponding meso acyl-, alkoxycarbonyl-, and carbamoyl-substituted meso-formylporphyrins has been developed, where the procedure involves a sequential S(N)Ar reaction of porphyrins with PyMe(2)SiCH(2)Li, followed by acylation or r…
Porphyrin and Phthalocyanine ChemistrySynthetic Organic Chemistry MethodsCyclopropane Reaction Mechanisms
Shan Fan、Gang Li、Xu Zhang 等 9 位作者2008-11-19Crystal Growth & Design
A kind of interesting urchin-like selenium nanostructure consisting of Se nanorods with a diameter of ∼100 nm and a length of 4−5 μm was synthesized based on a facile dismutation reaction in a buffer system at ambient conditions. In the synthesis process, cetyltrimethylammonium bromide (CTAB) was used as a shape-direc…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsSelenium in Biological Systems
Ying‐Chieh Lee2008-11-19International Journal of Applied Ceramic Technology
In order to study the micromechanism of silver migration that influences the dielectric properties and reliability of Zn 0.95 Mg 0.05 TiO 3 +0.25TiO 2 (ZMT″) with 1 wt% 3ZnO–B 2 O 3 multilayer ceramic capacitors (MLCCs), various silver (Ag)–palladium (Pd) ratios of conductors were used as inner electrodes. It was foun…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics
Wen‐Shyong Kuo、Hsin-Fang Lu2008-11-19Nanotechnology
A novel approach was adopted to incur bending fracture in carbon nanotubes (CNTs). Expanded graphite (EG) was made by intercalating and exfoliating natural graphite flakes. The EG was deposited with nickel particles, from which CNTs were grown by chemical vapor deposition. The CNTs were tip-grown, and their roots were…
Carbon Nanotubes in CompositesGraphene research and applicationsFiber-reinforced polymer composites
Vadahanambi Sridhar、Xu Deng、Thanh Tu Pham 等 5 位作者2008-11-19Polymer Composites
Abstract Dynamic mechanical analysis and dielectric relaxation spectra of exfoliated nano graphite reinforced flouroelastomer composites were used to study their relaxation behavior as a function of temperature (−80°C to +40°C) and frequency (0.01 to 10 5 Hz). The effect of filler loadings on glass transition temperat…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesDielectric materials and actuators
Simon Mathew、Martin R. Johnston2008-11-19Chemistry - A European Journal
A covalent dyad composed of a free-base porphyrin and a perylene diimide (1) was synthesised and characterised by NMR, HRMS, UV/Vis and fluorometric methods. UV/Vis spectrophotometric analysis indicated a moderate coupling between the components in the ground state. Fluorescence spectroscopy revealed that the emissive…
Porphyrin and Phthalocyanine ChemistryPhotochemistry and Electron Transfer StudiesLuminescence and Fluorescent Materials
Hülya Macit、Bakı Hazer、Hülya Arslan 等 4 位作者2008-11-19Journal of Applied Polymer Science
Abstract A new and promising method for the diversification of microbial polyesters based on chemical modifications is introduced. Poly(3‐hydroxy alkanoate)‐ g ‐(poly(tetrahydrofuran)‐ b ‐poly(methyl methacrylate)) (PHA‐ g ‐(PTHF‐ b ‐PMMA)) multigraft copolymers were synthesized by the combination of cationic and free…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesAntimicrobial agents and applications
Shaojun Yuan、C. K. Liu、Simo O. Pehkonen 等 7 位作者2008-11-19Biofouling
A novel surface modification technique was developed to provide a copper nickel alloy (M) surface with bactericidal and anticorrosion properties for inhibiting biocorrosion. 4-(chloromethyl)-phenyl tricholorosilane (CTS) was first coupled to the hydroxylated alloy surface to form a compact silane layer, as well as to…
Corrosion Behavior and InhibitionPolymer Surface Interaction StudiesAntimicrobial agents and applications
H. Couderc、Allisson Saiter、J. Grenet 等 8 位作者2008-11-19Polymer Engineering and Science
Abstract Samples of polyethylene‐1.4‐cyclohexylenedimethylene terephthalate glycol (PETg) with different filler contents were prepared by a master batch process. The intercalated dispersion state of montmorillonite (MMT) was characterized using X‐Ray Diffraction. Two different sample series are put in evidence with di…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
Ghee Hwee Lai、John C. Butler、Olena Zribi 等 8 位作者2008-11-19Physical Review Letters
We examine mixtures of DNA and filamentous actin (F-actin) as a model system of like-charged rigid rods and flexible chains. Confocal microscopy reveals the formation of elongated nematic F-actin domains reticulated via defect-free vertices into a network embedded in a mesh of random DNA. Synchrotron x-ray scattering…
Polymer Surface Interaction StudiesMicrofluidic and Bio-sensing TechnologiesAdhesion, Friction, and Surface Interactions
Yatao Zhang、Lihai Fan、Lihua Cheng 等 5 位作者2008-11-19Polymer Engineering and Science
Abstract A poly‐matrix composite—poly(sodium acrylate) (PSA)/hydrotalcite (HT) (PSA/HT) nanocomposite superabsorbent—with obvious improvements in both the water absorbency and salt absorbency has been prepared by the intercalated HT, using sodium methyl allyl sulfonate as an intercalation agent. The superabsorbents ac…
Polymer Nanocomposites and PropertiesDielectric materials and actuatorsLayered Double Hydroxides Synthesis and Applications
Hiroaki Miyazawa、Lijun Liu、Koichi Kakimoto2008-11-19Crystal Growth & Design
We carried out calculations to investigate the influence of thermal conductivity of the wall of a crucible on melt−crystal interface shape using three-dimensional global analyses. It was found that thermal conductivity of the wall of a crucible has significant influence on the melt−crystal interface shape due to modif…
Silicon and Solar Cell TechnologiesSolidification and crystal growth phenomenaMetallurgical Processes and Thermodynamics
Stefano Agnoli、Tommaso Orzali、Mauro Sambi 等 6 位作者2008-11-19The Journal of Physical Chemistry C
The preparation and characterization of fully oxidized TiO 2 ultrathin films obtained by reactive deposition of Ti in an O 2 background on the (1×2)-Pt(110) reconstructed surface is described in details. The structure, the electronic properties, and the morphology of the epitaxial films giving rise to a (14×4) coincid…
Catalytic Processes in Materials ScienceCopper-based nanomaterials and applicationsElectronic and Structural Properties of Oxides
A. Gomathi、S. Jafar Hoseini、C. N. R. Rao2008-11-19Journal of Materials Chemistry
Covalent functionalization of nanowires of TiO2, ZnO and Al2O3 has been carried out by employing the organosilicon reagents aminopropyltriethoxysilane and hexadecyltrimethoxysilane (HDTMS). The presence of the organosilane coating was confirmed by electron microscopy, energy dispersive X-ray analysis (EDXA) and IR spe…
Quantum Dots Synthesis And PropertiesConducting polymers and applicationsMolecular Junctions and Nanostructures
Armand Budzianowski、Andrzej Katrusiak、Marek Szafrański2008-11-19The Journal of Physical Chemistry B
Dielectric properties, spontaneous polarization, and phase transitions of the NH+...N bonded ferroelectric dabcoHBF4 (i.e., 1,4-diazabicyclo[2.2.2]octane tetrafluoroborate, [C6H13N2]+ BF4-) have been related to one-dimensional arrangement of the cations and to their conformational properties. The onset of conformation…
Crystallography and molecular interactionsSolid-state spectroscopy and crystallographyInorganic Fluorides and Related Compounds
Haiyun Liu、Wentao Zhang、Lin Zhao 等 18 位作者2008-11-19Physical Review B
High-resolution angle-resolved photoemission measurements have been carried out on the $(\text{Sr},\text{K}){\text{Fe}}_{2}{\text{As}}_{2}$ superconductor $({T}_{c}=21\text{ }\text{K})$. Three holelike Fermi-surface sheets are resolved around the $\ensuremath{\Gamma}$ point. One electronlike Fermi surface and strong F…
Corporate Taxation and AvoidanceIron-based superconductors researchIntellectual Capital and Performance Analysis
Hugh Churchill、Ferdinand Kuemmeth、Jennifer Harlow 等 10 位作者2008-11-19University of Regensburg Publication Server (University of Regensburg)
We use charge sensing of Pauli blockade (including spin and isospin) in a two-electron 13C nanotube double quantum dot to measure relaxation and dephasing times. The relaxation time, T1, first decreases with parallel magnetic field then goes through a minimum in a field of 1.4 T. We attribute both results to the spin-…
Ferroelectric and Piezoelectric MaterialsBoron and Carbon Nanomaterials ResearchQuantum-Dot Cellular Automata
Shoichi Kondo、Kowichiro Saruhashi、Ken-ichi Seki 等 8 位作者2008-11-19Angewandte Chemie
Vorratshaltung: Ein μ-Oxo-μ-η2:η2-peroxotitan(salan)-Komplex (siehe Struktur; Ti violett, O rot, N blau, C grau) wurde aus dem entsprechenden Di-μ-oxotitan(salan)-Komplex mithilfe von 30-proz. Wasserstoffperoxid hergestellt. Der μ-Oxo-μ-η2:η2-peroxo-Komplex wird langsam in eine aktive Spezies des Katalysezyklus der as…
Polyoxometalates: Synthesis and ApplicationsMetal-Catalyzed Oxygenation MechanismsOrganic Chemistry Cycloaddition Reactions
Rita Florio、Roberta Chiaraluce、Valerio Consalvi 等 7 位作者2008-11-19FEBS Journal
Pyridoxal 5'-phosphate-dependent enzymes may be grouped into five structural superfamilies of proteins, corresponding to as many fold types. The fold type I is by far the largest and most investigated group. An important feature of this fold, which is characterized by the presence of two domains, appears to be the exi…
Enzyme Structure and FunctionAmino Acid Enzymes and MetabolismBiochemical and Molecular Research
Youguo Yan、Lixia Zhou、Ye Zhang2008-11-19The Journal of Physical Chemistry C
A novel kind of hierarchical MgO nanostructure with bundles of nanowires, which were aligned onto six exposed planes of central cubic particles, was successfully synthesized by using a mixture of Mg, MgO, and carbon powder as source materials through the chemical vapor deposition (CVD) method. The evolution of the mor…
ZnO doping and propertiesElectronic and Structural Properties of OxidesMagnesium Oxide Properties and Applications