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Two‐Step Electrochemically Directed Synthesis of Pr4N(TCNQ)n (n=1, 2): Preparation, Structure, and Properties of a Magnetically Isolated Dimer and a Quasi‐One‐Dimensional Chain

Xiaohu Qu、Jinzhen Lu、John F. Boas 等 5 位作者2011-07-05Chemistry - A European Journal

Solid-state electrochemistry of a tetracyanoquinodimethane (TCNQ)-modified electrode in contact with a tetrapropylammonium cation (Pr(4)N(+)) electrolyte showed two electron-transfer steps to give Pr(4)N(TCNQ)(2) (1) and Pr(4)N(TCNQ) (2) rather than the traditional one-electron step to directly give Pr(4)N(TCNQ). Two…

Perovskite Materials and ApplicationsMagnetism in coordination complexesOrganic and Molecular Conductors Research

Magnesium hydroxide modified by 1‐n‐tetradecyl‐3‐carboxymethyl imidazolium chloride and its effects on the properties of LLDPE

Yunsheng Ding、Ping Wang、Zhongli Wang 等 6 位作者2011-07-05Polymer Engineering and Science

Abstract In this study, Mg(OH) 2 (MH) was first modified by 1‐ n ‐tetradecyl‐3‐carboxymethyl imidazolium chloride ([C 14 cim]Cl), an imidazolium ionic liquid, and then the modified MH ([C 14 cim]Cl‐MH) was incorporated into linear low‐density polyethylene (LLDPE) by melt‐mixing to obtain the LLDPE/[C 14 cim]Cl‐MH comp…

Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesFlame retardant materials and properties

Synchrotron fluorescence nanoimaging of a single Co‐implanted ZnO nanowire

M. H. Chu、Jaime Segura‐Ruiz、Gema Martínez‐Criado 等 7 位作者2011-07-05physica status solidi (RRL) - Rapid Research Letters

Abstract In this study, we report the application of synchrotron radiation nanoprobe technique to the elemental analysis of single as‐grown and Co‐implanted ZnO nanowires. The nano‐X‐ray fluorescence technique enabled us not only to examine the spatial variation of Zn and Co elements, but also to disregard the presenc…

ZnO doping and propertiesCopper-based nanomaterials and applicationsGa2O3 and related materials

Effect of Titanium Doping of Al(111) Surfaces on Alane Formation, Mobility, and Desorption

Irinder S. Chopra、Santanu Chaudhuri、Jean-François Veyan 等 5 位作者2011-07-05The Journal of Physical Chemistry C

Alanes are critical intermediates in hydrogen storage reactions for mass transport during the formation of complex metal hydrides. Titanium has been shown to promote hydrogen desorption and hydrogenation, but its role as a catalyst is not clear. Combining surface infrared (IR) spectroscopy and density functional theor…

Advanced Chemical Physics StudiesHydrogen Storage and MaterialsAmmonia Synthesis and Nitrogen Reduction

Dynamical origin of anomalous temperature hardening of elastic modulus in vitreous silica

Simon Ayrinhac、Benoît Rufflé、Marie Foret 等 10 位作者2011-07-05Physical Review B

High-resolution Brillouin scattering experiments are performed under hydrostatic pressures ranging from 0 to 10 GPa in vitreous silica. The hypersound-attenuation coefficient exhibits a sharp maximum located at 2 GPa, which appears to coincide with the well-known minimum in sound velocity. Two main processes contribut…

High-pressure geophysics and materialsGlass properties and applicationsSeismic Waves and Analysis

Inelastic Neutron Scattering on an Mn10Supertetrahedron: Assessment of Exchange Coupling Constants, Ferromagnetic Spin Waves and an Analogy to the Hückel Method

S. Stuiber、Gang Wu、Joscha Nehrkorn 等 10 位作者2011-07-05Chemistry - A European Journal

The synthesis, crystal structure and magnetic characterisation by magnetisation and inelastic neutron scattering (INS) of a mixed-valent Mn(10) supertetrahedral aggregate [Mn(III)(6)Mn(II)(4)(μ(4)-O)(4)(μ(3)-N(3))(3)(μ(3)-Br)(Hmpt)(6)(Br)]Br(0.7)(N(3))(0.3)·2MeOH·3MeCN (1) (H(3)mpt=3-methylpentan-1,3,5-triol) is repor…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesOrganic and Molecular Conductors Research

Magnetoelastic coupling in bulk and nanoscale MnO

Qi Sun、Sheila N. Baker、A. D. Christianson 等 4 位作者2011-07-05Physical Review B

Phonons are exquisitely sensitive to finite length scale effects because they are intimately connected to charge, structure, and magnetism, and a quantitative analysis of their behavior can reveal microscopic aspects of spin-lattice interaction. To investigate these effects in a model correlated oxide, we measured the…

Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsMultiferroics and related materials

Hybrid supercapacitors based on polyaniline and activated carbon composite electrode materials

Zheng Jin、Xiaomin Ren、Chuanli Qin 等 6 位作者2011-07-05Pigment & Resin Technology

Purpose The purpose of this paper is to develop feasible composite electrodes with a long cycle life and large specific capacitance and to investigate optimal ratio between aniline and activated carbon materials. Design/methodology/approach PANI/AC composite electrode materials were synthesised by in situ polymerisati…

Supercapacitor Materials and FabricationElectrochemical sensors and biosensorsConducting polymers and applications

Isothermal titration calorimetry study of the polyelectrolyte complexation of xanthan and chitosan samples of different degree of polymerization

Gjertrud Maurstad、Shinichi Kitamura、Bjørn T. Stokke2011-07-05Biopolymers

Mixing oppositely charged polyelectrolytes in aqueous solutions leads to the spontaneous formation of polyelectrolyte complexes. Here, we characterize the interaction between xanthan of two different chain lengths, a tri-glucosamine and a chitosan polymer by isothermal titration calorimetry (ITC). Analysis of the expe…

Nanocomposite Films for Food PackagingPolymer Surface Interaction StudiesElectrostatics and Colloid Interactions

External Electric Field Effects on State Energy and Photoexcitation Dynamics of Water-Soluble CdTe Nanoparticles

Ruriko Ohshima、Takakazu Nakabayashi、Yoichi Kobayashi 等 5 位作者2011-07-05The Journal of Physical Chemistry C

External electric field effects on absorption and photoluminescence (PL) spectra of colloidal CdTe nanoparticles have been measured in a poly(vinyl alcohol) (PVA) film. The electroabsorption spectra across the first exciton band are similar in shape to the second derivative of the absorption spectra, indicating the en…

Perovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films

The Role of Electronic Coupling in Linear Porphyrin Arrays Probed by Single‐Molecule Fluorescence Spectroscopy

Jaesung Yang、Ji‐Eun Lee、Chang Yeon Lee 等 7 位作者2011-07-05Chemistry - A European Journal

Single-molecule photophysical properties of two families of linear porphyrin arrays have been investigated by single-molecule fluorescence detection techniques. Butadiyne-linked arrays (Z(N)B) with extensive π-conjugation perform as photostable one-quantum systems. This demonstration has been suggested by the long-las…

Porphyrin and Phthalocyanine ChemistryMolecular Junctions and NanostructuresLuminescence and Fluorescent Materials

Sintering Characteristics and Electrical Conductivity of (Sr1−xLax)TiO3 Synthesized by the Citric Acid Method

Zhenwei Wang、Masashi Mori2011-07-05Journal of Electrochemical Energy Conversion and Storage

The air-sintering characteristics and electrical conductivity of (Sr1−xLax)TiO3 perovskites (0 ≤ x ≤ 0.3) synthesized by the citric acid method were evaluated in terms of their use as interconnect materials in solid oxide fuel cells. A single perovskite phase of (Sr0.8La0.2)TiO3 powder was formed at 800 °C. In this po…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Intumescent coatings based on an organic‐inorganic hybrid resin and the effect of mineral fibres on fire‐resistant properties of intumescent coatings

Roman Otáhal、David L. Vesely、Jarmila Násadová 等 6 位作者2011-07-05Pigment & Resin Technology

Purpose The purpose of this paper is to study properties of intumescent coatings based on a silicone‐epoxy hybrid resin (with an aminosilane as hardener). In the first part of this study, fire‐resistance behaviour of the intumescent coating based on silicone‐epoxy resin containing intumescent additives is evaluated. T…

Fire dynamics and safety researchFlame retardant materials and propertiesSynthesis and properties of polymers

Characterisation of the Local Deformation Behaviour of Engineering Plastics Rolls

Michael Berer、Zoltán Major2011-07-05Strain

Abstract: Previous research on the ‘Characterization of the global deformation behaviour of engineering plastics rolls’ investigated the deformation behaviour of loaded Polyoxymethylene (POM) and Polyetheretherketone (PEEK) rolls regarding global considerations only. This study concentrates on the analysis of the loca…

Polymer crystallization and propertiesOrthopaedic implants and arthroplastyRheology and Fluid Dynamics Studies

A Study on Effect of Waviness on Mechanical Properties of Multi-Walled Carbon Nanotube/Epoxy Composites Using Modified Halpin–Tsai Theory

Rouhollah Arasteh、Meisam Omidi、A. H. A. Rousta 等 4 位作者2011-07-05Journal of Macromolecular Science Part B

In order to improve the precision in prediction of mechanical properties of multi-walled carbon nanotubes (MWNTs)/epoxy composites, the effect of waviness of nanotubes is considered by applying a correction factor to a modified Halpin–Tsai equation. Data validation was carried out through the comparison of theoretical…

Carbon Nanotubes in CompositesMechanical Behavior of CompositesFiber-reinforced polymer composites

Spectral Functions of Isolated Ce Adatoms on Paramagnetic Surfaces

Sandra Gardonio、Tim O. Wehling、L. Petaccia 等 9 位作者2011-07-05Physical Review Letters

We report photoemission experiments revealing the full valence electron spectral function of Ce adatoms on Ag(111), W(110), and Rh(111) surfaces. A transfer of Ce 4f spectral weight from the ionization peak towards the Fermi level is demonstrated upon changing the substrate from Ag(111) to Rh(111). In the intermediate…

Catalytic Processes in Materials ScienceAdvanced Condensed Matter PhysicsNanocluster Synthesis and Applications

Self-interstitials injection in crystalline Ge induced by GeO2nanoclusters

G. G. Scapellato、Simona Boninelli、E. Napolitani 等 12 位作者2011-07-05Physical Review B

The effect of O implantation in crystalline Ge on the density of native point defects has been investigated through transmission electron microscopy and B diffusion experiments. Annealing at 650 \ifmmode^\circ\else\textdegree\fi{}C following O implants produces a band of defects (\ensuremath{\sim}5--10 nm), compatible…

Semiconductor materials and devicesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence

Tunable cut-off frequency by in-plane uniaxial anisotropy in (Fe66.9Co33.1)86.8Sm13.2 films

Li Xi、Jian-Hua ZHOU、Qilong Sun 等 7 位作者2011-07-05Journal of Physics D Applied Physics

(Fe 66.9 Co 33.1 ) 86.8 Sm 13.2 (FeCoSm) thin films with thickness from 110 to 330 nm are fabricated on silicon (1 1 1) substrates by magnetron co-sputtering under ambient condition. The as-deposited FeCoSm thin film is amorphous when the thickness is less than 150 nm. When the thickness increases further, the film be…

Magnetic properties of thin filmsMetallic Glasses and Amorphous AlloysMagnetic Properties and Applications

Electric‐Field‐Responsive Handle for Large‐Area Orientation of Discotic Liquid‐Crystalline Molecules in Millimeter‐Thick Films

Daigo Miyajima、Fumito Araoka、Hideo Takezoe 等 7 位作者2011-07-05Angewandte Chemie

Unter Strom gesetzt: Eine auf elektrische Felder reagierende Steuereinheit (siehe Bild), die bei großflächiger und millimeterdicker unidirektionaler Orientierung columnar organisierter π-konjugierter flüssigkristalliner Moleküle funktioniert, wurde entwickelt. In den Säulen sind die Einheiten über Wasserstoffbrücken m…

Liquid Crystal Research AdvancementsMesoporous Materials and CatalysisMolecular Junctions and Nanostructures

Stainless Steel/Yttria Stabilized Zirconia Composite Supported Solid Oxide Fuel Cell

Sebastian Molin、Mateusz Tolczyk、Maria Gazda 等 4 位作者2011-07-05Journal of Electrochemical Energy Conversion and Storage

In this paper composite supports for solid oxide fuel cells were fabricated and evaluated. Substrates were composed of stainless steel and yttria stabilized zirconia (YSZ) powders mixed in different volume ratios. Their sintering behavior (linear shrinkage, resulting porosity) and high temperature properties (oxidatio…

Advancements in Solid Oxide Fuel CellsChemical Looping and Thermochemical ProcessesElectronic and Structural Properties of Oxides