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Ru-capped/FeCo nanoflowers with high catalytic efficiency towards hydrolytic dehydrogenation

Ming Wen、Yuzhen Sun、Xiaomeng Li 等 6 位作者2013-06-12Journal of Power Sources

Magnetic Ru-capped/FeCo nanoflowers are solvothermally synthesised through a self-catalytic growth and assembly process. The synthesised Ru-capped/FeCo nanoflowers (∼3.63 μm) consist of Ru-capped FeCo nanorods with an average diameter of ∼13 nm and a length ranging from 1.33 to 2.1 μm. A vibration sample magnetometer…

Hydrogen Storage and MaterialsAmmonia Synthesis and Nitrogen ReductionNanomaterials for catalytic reactions

Direct Synthesis of Graphene Meshes and Semipermanent Electrical Doping

Jaeseok Yi、Dong Hyun Lee、Won‐Woo Lee 等 4 位作者2013-06-12The Journal of Physical Chemistry Letters

Here we describe a new method for the direct patterned synthesis of graphene meshes on Cu foils that use self-assembled silica sphere arrays as growth masks. Structural analyses based on electron microscopy and Raman spectroscopy showed that the graphene meshes are mostly single- or double-layer necks with empty holes…

Graphene research and applicationsSupercapacitor Materials and FabricationGraphene and Nanomaterials Applications

Evolution of magnetic interactions in a pressure-induced Jahn-Teller driven magnetic dimensionality switch

Saman Ghannadzadeh、Johannes S. Möller、Paul Goddard 等 12 位作者2013-06-12Physical Review B

We present the results of high-field magnetization and muon-spin relaxation measurements on the coordination polymer CuF${}_{2}$(H${}_{2}$O)${}_{2}$(pyrazine) in pressures up to 22.5 kbar. We observe a transition from a quasi-two-dimensional to a quasi-one-dimensional antiferromagnetic phase at 9.1 kbar, driven by a r…

Magnetism in coordination complexesAdvanced Condensed Matter PhysicsOrganic and Molecular Conductors Research

Upconversion properties and dynamics study in Tm3+ and Yb3+ codoped CaSc2O4 oxide material

Jing Li、Jiahua Zhang、Zhendong Hao 等 6 位作者2013-06-12Journal of Applied Physics

The upconversion properties of Tm3+ and Yb3+ codoped CaSc2O4 phosphor excited at 980 nm are reported. The blue emission of Tm3+:1G4 → 3H6, red emission of Tm3+:1G4 → 3F4, near-infrared emissions of Tm3+:3H4 → 3H6 (800 nm) and 3F4 → 3H6 (1600 nm) are observed when excited Yb3+:2F5/2 level. The spectral properties of Yb…

Luminescence Properties of Advanced MaterialsGlass properties and applicationsSolid State Laser Technologies

Interaction and Structure in Polyelectrolyte/Clay Multilayers: A QCM-D Study

Gerald Findenig、Rupert Kargl、Karin Stana Kleinschek 等 4 位作者2013-06-12Langmuir

This study focuses on the investigation of the influence of the ionic strength on the internal structure, film forming behavior, and swelling properties of polyelectrolyte/clay multilayers. Layer-by-layer films were prepared with three different polyelectrolytes [polyethylenimine (PEI), polydiallyldimethylammoniumchlo…

Hydrogels: synthesis, properties, applicationsPolymer Surface Interaction StudiesPolymer-Based Agricultural Enhancements

Microcrystal manipulation with laser tweezers

Armin Wagner、Ramona Duman、Bob Stevens 等 4 位作者2013-06-12Acta Crystallographica Section D Biological Crystallography

X-ray crystallography is the method of choice to deduce atomic resolution structural information from macromolecules. In recent years, significant investments in structural genomics initiatives have been undertaken to automate all steps in X-ray crystallography from protein expression to structure solution. Robotic sy…

Protein Structure and DynamicsEnzyme Structure and FunctionAdvanced X-ray Imaging Techniques

Cross-functionalities ofBacillusdeacetylases involved in bacillithiol biosynthesis and bacillithiol-S-conjugate detoxification pathways

Zhong Fang、Alexandra A. Roberts、Karissa Weidman 等 7 位作者2013-06-12Biochemical Journal

BshB, a key enzyme in bacillithiol biosynthesis, hydrolyses the acetyl group from N-acetylglucosamine malate to generate glucosamine malate. In Bacillus anthracis, BA1557 has been identified as the N-acetylglucosamine malate deacetylase (BshB); however, a high content of bacillithiol (~70%) was still observed in the B…

Enzyme Structure and FunctionSulfur Compounds in BiologyProtein Hydrolysis and Bioactive Peptides

Magnetic and Polar Properties’ Optimization in the Magnetoelectric Ga2–xFexO3 Compounds

Christophe Lefèvre、F. Roulland、Alexandre Thomasson 等 7 位作者2013-06-12The Journal of Physical Chemistry C

The influence of the iron content on the magnetic, polar, and magnetoelectric properties of Ga 2– x Fe x O 3 ( x = 1.0; x = 1.4) polycrystalline samples was studied by a combined magnetic (SQUID) and structural (X-ray and temperature-dependent neutrons diffraction) study. As expected, the samples showed a ferrimagneti…

Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Preparation of Cellulose Hollow Fiber Membrane from Bamboo Pulp/1-Butyl-3-Methylimidazolium Chloride/Dimethylsulfoxide System

Bomou Ma、Aiwen Qin、Xiang Li 等 4 位作者2013-06-12Industrial & Engineering Chemistry Research

In this paper, 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) was synthesized and used as solvent to dissolve bamboo pulp. Dimethylsulfoxide (DMSO) was selected as cosolvent to adjust the solution viscosity. As compared with the bamboo pulp/[Bmim]Cl system, the addition of DMSO decreases the solution viscosity dramat…

Nanocomposite Films for Food PackagingNatural Fiber Reinforced CompositesAdvanced Cellulose Research Studies

Cholesterol‐/Estradiol‐Appended Alkynylplatinum(II) Complexes as Supramolecular Gelators: Synthesis, Characterization, Photophysical and Gelation Studies

Yongguang Li、Elizabeth Suk‐Hang Lam、Anthony Yiu‐Yan Tam 等 7 位作者2013-06-12Chemistry - A European Journal

A series of cholesterol-/estradiol-appended alkynylplatinum(II) complexes with tridentate N-donor ligands, based on 2,6-bis(1-alkylpyrazol-3-yl)pyridine, has been synthesized and characterized by (1)H NMR spectroscopy, FAB-mass spectrometry, and elemental analysis. Their photophysical properties have also been investi…

Porphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent MaterialsSupramolecular Self-Assembly in Materials

Nano/Mesoporous Polymers Based Low‐k Dielectric Materials: A Review on Methods and Advances

Sude Ma、Yan Wang、Zhonghua Min 等 4 位作者2013-06-12Advances in Polymer Technology

ABSTRACT Nanoporous or mesoporous structures and hence a decrease in dielectric constant can always be induced with the introduction of air into polymeric materials. It is therefore achievable to prepare ultra‐large‐scale integrated circuit (ULSIC) on ultralow dielectric constant (i.e., low‐ k ) materials. The researc…

Semiconductor materials and devicesCopper Interconnects and ReliabilitySynthesis and properties of polymers

Biomimetic Synthesis of Materials for Technology

Johanna M. Galloway、Jonathan P. Bramble、Sarah S. Staniland2013-06-12Chemistry - A European Journal

In a world with ever decreasing natural reserves, researchers are striving to find sustainable methods of producing components for technology. Bioinspired, biokleptic and biomimetic materials can be used to form a wide range of technologically relevant materials under environmentally friendly conditions. Here we inves…

Advanced biosensing and bioanalysis techniquesMolecular Junctions and NanostructuresDiatoms and Algae Research

Enhancing the Superhydrophobic State Stability of Chitosan‐Based Coatings for Textiles

Nina A. Ivanova、Galina I. Rutberg、Anatoly B. Philipchenko2013-06-12Macromolecular Chemistry and Physics

Abstract A superhydrophobic textile for biomedical applications is designed using chitosan‐based hydrophobic nanoparticles. The fabrication of nanoparticles is based on the electrostatic interaction between the amine group of chitosan and the negatively charged fluoroanion. The coating is formed by spraying the nanopa…

Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical Applications

Air‐stable copper derivatives as efficient catalysts for controlled lactide polymerization: Facile synthesis and characterization of well‐defined benzotriazole phenoxide copper complexes

Chenyu Li、Shi‐Jie Hsu、Chin-Lung Lin 等 10 位作者2013-06-12Journal of Polymer Science Part A Polymer Chemistry

ABSTRACT Air‐stable copper catalysts supported by bis‐ BTP ligands ( BTP = N,O ‐bidentate benzotriazole phenoxide) were synthesized and structurally characterized. The reactions of Cu(OAc) 2 ·H 2 O with 2.0 molar equivalents of sterically bulky 2‐(2H‐benzotriazol‐2‐yl)‐4,6‐bis(1‐methyl‐1‐phenylethyl)phenol ( CMe2Ph BT…

Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis

Patterns of Expression in the Matrix Proteins Responsible for Nucleation and Growth of Aragonite Crystals in Flat Pearls of Pinctada fucata

Liang Xiang、Jingtan Su、Guilan Zheng 等 8 位作者2013-06-12PLoS ONE

The initial growth of the nacreous layer is crucial for comprehending the formation of nacreous aragonite. A flat pearl method in the presence of the inner-shell film was conducted to evaluate the role of matrix proteins in the initial stages of nacre biomineralization in vivo. We examined the crystals deposited on a…

Bone Tissue Engineering MaterialsPaleontology and Stratigraphy of FossilsCalcium Carbonate Crystallization and Inhibition

Radiation-induced strengthening and absorption of dislocation loops in ferritic Fe–Cr alloys: the role of Cr segregation

D. Terentyev、A. Bakaev2013-06-12Journal of Physics Condensed Matter

The understanding of radiation-induced strengthening in ferritic FeCr-based steels remains an essential issue in the assessment of materials for fusion and fission reactors. Both early and recent experimental works on Fe-Cr alloys reveal Cr segregation on radiation-induced nanostructural features (mainly dislocation l…

Fusion materials and technologiesNuclear Materials and PropertiesNuclear materials and radiation effects

Nanoscale Reduction of Graphene Fluoride via Thermochemical Nanolithography

Woo-Kyung Lee、Michael Haydell、Jeremy T. Robinson 等 7 位作者2013-06-12ACS Nano

Graphene nanoribbons (GNRs) would be the ideal building blocks for all carbon electronics; however, many challenges remain in developing an appropriate nanolithography that generates high-quality ribbons in registry with other devices. Here we report direct and local fabrication of GNRs by thermochemical nanolithograp…

Graphene research and applicationsTopological Materials and PhenomenaMolecular Junctions and Nanostructures

Recombination luminescence of LaPO4-Eu and LaPO4-Pr nanoparticles

T. Malyy、V. Vistovskyy、Z. A. Khapko 等 8 位作者2013-06-12Journal of Applied Physics

The study of the spectral-luminescence parameters of LaPO4-Eu and LaPO4-Pr nanoparticles upon excitation by the synchrotron radiation with photon energies 4–40 eV was performed. The differences of the luminescence intensity dependence on the size for LaPO4-Eu and LaPO4-Pr nanoparticles excited at the range of matrix t…

Luminescence Properties of Advanced MaterialsQuantum Dots Synthesis And PropertiesGlass properties and applications

The Immune Response in In Situ Tissue Engineering of Aortic Heart Valves

van Slm Saskia Loon、Aipm Anthal Smits、A. Driessen-Mol 等 5 位作者2013-06-12InTech eBooks

The gold standard for treatment of advanced heart valve disease is surgical heart valve re‐ placement. None of the currently available mechanical and bioprosthetic heart valve substi‐ tutes resembles normal heart valve function. While mechanical heart valves offer excellent durability, they require life-long anticoagu…

Cardiac Valve Diseases and TreatmentsElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

Healing efficiency of epoxy‐based materials for structural applications

Marialuigia Raimondo、Liberata Guadagno2013-06-12Polymer Composites

Self‐healing is receiving increasing interest worldwide as a technology to autonomously address the effects of damage in composite materials. This article relates to a self‐healing composite exhibiting high levels of healing efficiency under working conditions typical of aeronautic materials. The self‐healing material…

Polymer composites and self-healingSynthetic Organic Chemistry MethodsCarbon dioxide utilization in catalysis