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Anatase TiO 2 Films with Dominant {001} Facets Fabricated by Direct-Current Reactive Magnetron Sputtering at Room Temperature: Oxygen Defects and Enhanced Visible-Light Photocatalytic Behaviors

Jianyun Zheng、Shanhu Bao、Yu Guo 等 4 位作者2014-04-10ACS Applied Materials & Interfaces

A TiO2 film with dominant anatase {001} facets is directly prepared by direct-current reactive magnetron sputtering at room temperature without using morphology-controlling agents. The formation mechanism of anatase TiO2 films with dominant {001} facets is explained by the competition between thermodynamics and ion im…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesCopper-based nanomaterials and applications

Fed-Batch Control and Visualization of Monomer Sequences of Individual ICAR ATRP Gradient Copolymer Chains

Dagmar D’hooge、Paul Van Steenberge、Marie‐Françoise Reyniers 等 4 位作者2014-04-10Polymers

Based on kinetic Monte Carlo simulations of the monomer sequences of a representative number of copolymer chains (≈ 150,000), optimal synthesis procedures for linear gradient copolymers are proposed, using bulk Initiators for Continuous Activator Regeneration Atom Transfer Radical Polymerization (ICAR ATRP). Methyl me…

Advanced Polymer Synthesis and CharacterizationFuel Cells and Related MaterialsMachine Learning in Materials Science

Accelerating the degradation of polyolefins through additives and blending

Xingxun Liu、Chengcheng Gao、Parveen Sangwan 等 5 位作者2014-04-10Journal of Applied Polymer Science

ABSTRACT Polyolefins are popular because of their low price, useful properties, broad supply chains, and mature processing facilities, but they do not easily degrade in the natural environment, and hence, the development of degradable polyolefins has attracted increasing interest. Oxidative degradation and blending wi…

biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionPolymer Science and PVC

pH-Dependent Degradation of Methylene Blue via Rational-Designed MnO2 Nanosheet-Decorated Diatomites

Yuxin Zhang、Xiaodong Hao、Fei Li 等 6 位作者2014-04-10Industrial & Engineering Chemistry Research

Hierarchical MnO 2 -modified diatomite (MnO 2 -D) nanostructures are synthesized through a one-pot hydrothermal method. By adjusting the preparative parameters, the morphology and surface pore size distribution of MnO 2 -D composites can be well-controlled. Their nanostructures are examined by focused-ion-beam scannin…

Supercapacitor Materials and FabricationGeochemistry and Elemental AnalysisGraphene and Nanomaterials Applications

Highly efficient long-life blue fluorescent organic light-emitting diode exhibiting triplet–triplet annihilation effects enhanced by a novel hole-transporting material

Tsunenori Suzuki、Yusuke Nonaka、Takeyoshi Watabe 等 7 位作者2014-04-10Japanese Journal of Applied Physics

Highly efficient long-life blue fluorescent organic light-emitting diode exhibiting triplet–triplet annihilation effects enhanced by a novel hole-transporting material, Suzuki, Tsunenori, Nonaka, Yusuke, Watabe, Takeyoshi, Nakashima, Harue, Seo, Satoshi, Shitagaki, Satoko, Yamazaki, Shunpei

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent Materials

Controllable Tuning Various Ratios of ZnO Polar Facets by Crystal Seed-Assisted Growth and Their Photocatalytic Activity

Mianli Huang、Yan Yu、Wenhui Feng 等 7 位作者2014-04-10Crystal Growth & Design

In this paper, Bi 2 WO 6 was, for the first time, utilized as crystal seeds to fine control the ratio of ZnO polar facets under a mild condition. The structure and photocatalytic properties of the ZnO were investigated by powder X-ray diffraction, Raman scattering measurements, X-ray photoelectron spectroscopy, field…

Advanced Photocatalysis TechniquesZnO doping and propertiesGas Sensing Nanomaterials and Sensors

Fabrication of p-channel heterostructure field effect transistors with polarization-induced two-dimensional hole gases at metal–polar GaN/AlInGaN interfaces

B. Reuters、H. Hahn、Alexander Pooth 等 8 位作者2014-04-10Journal of Physics D Applied Physics

Novel nitride-based heterostructures have been fabricated demonstrating two-dimensional hole gases as the basis for p-channel transistors. The carrier density in the 2DHG is adjusted between very high values of 2 × 10 13 cm −2 and low values of 6 × 10 11 cm −2 by the polarization difference, Δ P , between quaternary A…

Semiconductor Quantum Structures and DevicesZnO doping and propertiesGaN-based semiconductor devices and materials

Spheroidisation of hypereutectoid state of nanostructured bainitic steel

Dan Luo、M.J. Peet、Steve Ooi 等 6 位作者2014-04-10Materials Science and Technology

Nanostructured bainite is extremely resistant to severe tempering making it difficult to reduce its hardness sufficiently to allow certain processing before heat treatment into its final state. An attempt is therefore made to introduce the divorced pearlite reaction that relies on the presence of pro-eutectoid cementi…

Metal and Thin Film MechanicsMicrostructure and Mechanical Properties of SteelsMetal Alloys Wear and Properties

Pyrene and Diketopyrrolopyrrole-Based Oligomers Synthesized via Direct Arylation for OSC Applications

Shiyong Liu、Wenqing Liu、Jing‐Qi Xu 等 10 位作者2014-04-10ACS Applied Materials & Interfaces

In this report, an atom efficient and facile synthetic strategy for accessing multi-diketopyrrolopyrrole (DPP)-based oligomers used in solution-processed organic field effect transistors (OFETs) and organic solar cells (OSCs) has been developed. The DPP units were successfully installed onto benzene and pyrene cores v…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchConducting polymers and applications

A Microdot Multilayer Oxide Device: Let Us Tune the Strain-Ionic Transport Interaction

Sebastian Schweiger、Markus Kubicek、Felix Messerschmitt 等 5 位作者2014-04-10ACS Nano

In this paper, we present a strategy to use interfacial strain in multilayer heterostructures to tune their resistive response and ionic transport as active component in an oxide-based multilayer microdot device on chip. For this, fabrication of strained multilayer microdot devices with sideways attached electrodes is…

Semiconductor materials and devicesAdvanced Memory and Neural ComputingElectronic and Structural Properties of Oxides

Concentrating Aggregation-Induced Fluorescence in Planar Waveguides: A Proof-of-Principle

James L. Banal、Jonathan M. White、Kenneth P. Ghiggino 等 4 位作者2014-04-10Scientific Reports

The photophysical properties of fluorescent dyes are key determinants in the performance of luminescent solar concentrators (LSCs). First-generation dyes--coumarin, perylenes, and rhodamines--used in LSCs suffer from both concentration quenching in the solid-state and small Stokes shifts which limit the current LSC ef…

Organic Light-Emitting Diodes ResearchPhotochemistry and Electron Transfer StudiesLuminescence and Fluorescent Materials

Enzyme-Triggered Cascade Reactions and Assembly of Abiotic Block Copolymers into Micellar Nanostructures

Jingyi Rao、Christine Hottinger、Anzar Khan2014-04-10Journal of the American Chemical Society

Catalytic action of an enzyme is shown to transform a non-assembling block copolymer, composed of a completely non-natural repeat unit structure, into a self-assembling polymer building block. To achieve this, poly(styrene) is combined with an enzyme-sensitive methacrylate-based polymer segment carrying carefully desi…

Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesSupramolecular Self-Assembly in Materials

Electrospun Doping of Carbon Nanotubes and Platinum Nanoparticles into the β-Phase Polyvinylidene Difluoride Nanofibrous Membrane for Biosensor and Catalysis Applications

Panpan Zhang、Xinne Zhao、Xuan Zhang 等 8 位作者2014-04-10ACS Applied Materials & Interfaces

A novel β-phase polyvinylidene difluoride (PVDF) nanofibrous membrane decorated with multiwalled carbon nanotubes (MWCNTs) and platinum nanoparticles (PtNPs) was fabricated by an improved electrospinning technique. The morphology of the fabricated PVDF-MWCNT-PtNP nanofibrous membrane was observed by scanning electron…

Electrochemical sensors and biosensorsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications

Highly Enantioselective Bioinspired Epoxidation of Electron-Deficient Olefins with H2O2on Aminopyridine Mn Catalysts

Roman V. Ottenbacher、Denis G. Samsonenko⧫、Evgenii P. Talsi 等 4 位作者2014-04-10ACS Catalysis

The asymmetric epoxidation of various electron-deficient olefins with H 2 O 2 in the presence of a novel family of chiral bioinspired bipyrrolidine-derived aminopyridine manganese(II) complexes [LM II (OTf) 2 ] is reported. High enantioselectivities (up to 99% ee) and epoxide selectivities (up to 100%), unprecedented…

Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

Controlling the structural and functional anisotropy of engineered cardiac tissues

Weining Bian、Christopher P. Jackman、Nenad Bursac2014-04-10Biofabrication

The ability to control the degree of structural and functional anisotropy in 3D engineered cardiac tissues would have high utility for both in vitro studies of cardiac muscle physiology and pathology as well as potential tissue engineering therapies for myocardial infarction. Here, we applied a high aspect ratio soft…

Electrospun Nanofibers in Biomedical Applications3D Printing in Biomedical ResearchTissue Engineering and Regenerative Medicine

Charge Transport in Nanostructured PS–PEO–PS Triblock Copolymer Electrolytes

Renaud Bouchet、Trang N. T. Phan、Emmanuel Beaudoin 等 7 位作者2014-04-10Macromolecules

Nanostructured block copolymer electrolytes (BCE) are currently attracting widespread interest for applications in rechargeable lithium batteries. In order to investigate the influence of the composition, and therefore that of confinement, on the conductivity, a series of triblock PS–PEO–PS copolymers, with three line…

Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesConducting polymers and applications

Modification of Chitin with Kraft Lignin and Development of New Biosorbents for Removal of Cadmium(II) and Nickel(II) Ions

Marcin Wysokowski、Łukasz Kłapiszewski、Dariusz Moszyński 等 9 位作者2014-04-10Marine Drugs

Novel, functional materials based on chitin of marine origin and lignin were prepared. The synthesized materials were subjected to physicochemical, dispersive-morphological and electrokinetic analysis. The results confirm the effectiveness of the proposed method of synthesis of functional chitin/lignin materials. Mech…

Advanced Cellulose Research StudiesEnzyme-mediated dye degradationLignin and Wood Chemistry

A Study of Carbonized Lignin as an Alternative to Carbon Black

Michael R. Snowdon、Amar K. Mohanty、Manjusri Misra2014-04-10ACS Sustainable Chemistry & Engineering

High Resolution Image Download MS PowerPoint Slide The production of biobased carbonaceous powder from bioethanol coproduct lignin for use as a substitute for fossil fuel-derived conductive carbon black filler is examined. The synthesis procedure used for the formation of biobased carbon black is studied in order to o…

Carbon Nanotubes in CompositesPolymer Nanocomposites and PropertiesFiber-reinforced polymer composites

Effects of Charge and Substituent on the S···N Chalcogen Bond

Upendra Adhikari、Steve Scheiner2014-04-10The Journal of Physical Chemistry A

Neutral complexes containing a S···N chalcogen bond are compared with similar systems in which a positive charge has been added to the S-containing electron acceptor, using high-level ab initio calculations. The effects on both XS···N and XS(+)···N bonds are evaluated for a range of different substituents X = CH3, CF3…

Crystallography and molecular interactionsOrganic and Molecular Conductors ResearchInorganic Fluorides and Related Compounds

Negative Refraction and Energy Funneling by Hyperbolic Materials: An Experimental Demonstration in Acoustics

Victor M. García-Chocano、Johan Christensen、José Sánchez‐Dehesa2014-04-10Physical Review Letters

This Letter reports the design, fabrication, and experimental characterization of hyperbolic materials showing negative refraction and energy funneling of airborne sound. Negative refraction is demonstrated using a stack of five holey Plexiglas plates where their thicknesses, layer separation, hole diameters, and latt…

Metamaterials and Metasurfaces ApplicationsAcoustic Wave Phenomena ResearchUnderwater Acoustics Research