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Thienyl-substituted BODIPYs with strong visible light-absorption and long-lived triplet excited states as organic triplet sensitizers for triplet–triplet annihilation upconversion

Yinghui Chen、Jianzhang Zhao、Lijuan Xie 等 5 位作者2012-01-01RSC Advances

Thienyl-substituted BODIPY derivatives were prepared as organic triplet photosensitizers for triplet–triplet annihilation (TTA) upconversion. The photophysical properties of the sensitizers were fully studied with steady state and time-resolved spectroscopy, as well as density functional theory (DFT) calculations. Sen…

Molecular Sensors and Ion DetectionNanoplatforms for cancer theranosticsLuminescence and Fluorescent Materials

Transition metal oxide and graphene nanocomposites for high-performance electrochemical capacitors

Weifeng Zhang、Fu Liu、Qianqian Li 等 8 位作者2012-01-01Physical Chemistry Chemical Physics

A method for producing nanocomposites of transition metal oxides A(3)O(4) (where A represents Mn, Fe or Co) and graphene nanosheets (GNS) is presented. The reduction of graphene oxide (GO) and the formation of A(3)O(4) nanoparticles (NPs) were carried out simultaneously during the reaction. The electrochemical propert…

Advancements in Battery MaterialsGraphene research and applicationsSupercapacitor Materials and Fabrication

The Effect of Nanoclay on Dust Generation during Drilling of PA6 Nanocomposites

Sophia Sachse、Francesco Silva、Huijun Zhu 等 10 位作者2012-01-01Journal of Nanomaterials

During the past decade, polymer nanocomposites have emerged as a novel and rapidly developing class of materials and attracted considerable investment in research and development worldwide. However, there is currently a lack of information available in the literature on the nano and ultrafine particle emission rates f…

Polymer Nanocomposites and PropertiesTribology and Wear AnalysisPolymer Nanocomposite Synthesis and Irradiation

Surface plasmon lasers: sources of nanoscopic light

Rupert F. Oulton2012-01-01Materials Today

The use of metals for light localization in lasers is a new way of reducing their size and addresses the key issues of electrical contacting and heat sinking. Such lasers can also be reduced in size almost indefinitely by accessing light that couples to collective electron oscillations of the metal, known as surface p…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchQuantum Dots Synthesis And Properties

Hydrogen Embrittlement Resistance Evaluation of Ultra High Strength Steel Sheets for Automobiles

Shusaku Takagi、Yuki Toji、Masataka Yoshino 等 4 位作者2012-01-01ISIJ International

When ultra high strength steel (UHSS) sheets with tensile strength over 980 MPa are applied in automobiles, there is a risk that a type of hydrogen embrittlement fracture called delayed fracture may occur while a vehicle is in use. This paper summarizes the effects of stress, strain, diffusible hydrogen content and th…

Corrosion Behavior and InhibitionMicrostructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metals

The effective peroxidase-like activity of chitosan-functionalized CoFe2O4 nanoparticles for chemiluminescence sensing of hydrogen peroxide and glucose

Yingwei Fan、Yuming Huang2012-01-01The Analyst

Here, we report a highly simple and general protocol for functionalization of the CoFe(2)O(4) NPs with chitosan polymers in order to make CoFe(2)O(4) NPs disperse and stable in solution. The functionalized CoFe(2)O(4) NPs (denoted as CF-CoFe(2)O(4) NPs) were characterized by scanning electron microscope (SEM), thermog…

Advanced biosensing and bioanalysis techniquesElectrochemical sensors and biosensorsAdvanced Nanomaterials in Catalysis

Mesoporous carbon nanofibers with a high surface area electrospun from thermoplastic polyvinylpyrrolidone

Peiqi Wang、Dan Zhang、Feiyue Ma 等 7 位作者2012-01-01Nanoscale

Carbon nanofibers (CNFs) have been synthesized from thermoplastic polyvinylpyrrolidone (PVP) using electrospinning in combination with a novel three-step heat treatment process, which successfully stabilizes the fibrous morphology before carbonization that was proven to be difficult for thermoplastic polymers other th…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationElectrospun Nanofibers in Biomedical Applications

A facile and efficient strategy for the preparation of stable CaMoO4 spherulites using ammonium molybdate as a molybdenum source and their excitation induced tunable luminescent properties for optical applications

Ganji Seeta Rama Raju、E. Pavitra、Yeong Hwan Ko 等 4 位作者2012-01-01Journal of Materials Chemistry

Stable CaMoO4 spherulites were synthesized by a facile hydrothermal method using (NH4)6Mo7O24·4H2O as a Mo source and these spherulites were formed according to the theoretical predictions of the crystal splitting theory. Rietveld refinement and photoluminescence studies confirmed that the CaMoO4 spherulites are defec…

Luminescence Properties of Advanced MaterialsPolyoxometalates: Synthesis and ApplicationsInorganic Chemistry and Materials

Simultaneous catalyzing and reinforcing effects of imidazole-functionalized graphene in anhydride-cured epoxies

Wanshuang Liu、Kwang Liang Koh、Jinlin Lu 等 8 位作者2012-01-01Journal of Materials Chemistry

In this study, an imidazole-functionalized graphene (G-IMD) was prepared from graphene oxide by a facile one-pot method. The functionalized graphene not only showed improved organic compatibility but also could simultaneously play the roles of a cure accelerator and reinforcement for anhydride-cured epoxies. Our resul…

Graphene research and applicationsPolymer Nanocomposites and PropertiesSynthesis and properties of polymers

In-depth proteomic analysis of a mollusc shell: acid-soluble and acid-insoluble matrix of the limpet Lottia gigantea

Karlheinz Mann、Eric Edsinger、Matthias Mann2012-01-01Proteome Science

BACKGROUND: Invertebrate biominerals are characterized by their extraordinary functionality and physical properties, such as strength, stiffness and toughness that by far exceed those of the pure mineral component of such composites. This is attributed to the organic matrix, secreted by specialized cells, which pervad…

Paleontology and Stratigraphy of FossilsCalcium Carbonate Crystallization and InhibitionDiatoms and Algae Research

Analysis of a Darcy--Cahn--Hilliard Diffuse Interface Model for the Hele-Shaw Flow and Its Fully Discrete Finite Element Approximation

Xiaobing Feng、Steven Wise2012-01-01SIAM Journal on Numerical Analysis

In this paper we present PDE and finite element analyses for a system of PDEs consisting of the Darcy equation and the Cahn--Hilliard equation, which arises as a diffuse interface model for the two-phase Hele-Shaw flow. In the model the two sets of equations are coupled through an extra phase induced force term in the…

Advanced Numerical Methods in Computational MathematicsSolidification and crystal growth phenomenaFluid Dynamics and Thin Films

Synthesis of ZnSnO3 mesocrystals from regular cube-like to sheet-like structures and their comparative electrochemical properties in Li-ion batteries

Yuejiao Chen、Baihua Qu、Lin Mei 等 7 位作者2012-01-01Journal of Materials Chemistry

ZnSnO3, as an anode material for lithium ion batteries (LIBs), was investigated for the first time with structures ranging from unique ZnSnO3 nanocubes (ZSCs) to ZnSnO3 nanosheets (ZSSs). These structures were synthesized by a dual-hydrolysis-assisted liquid precipitation reaction and subsequent hydrothermal route. Af…

ZnO doping and propertiesGa2O3 and related materialsElectronic and Structural Properties of Oxides

Single-ion magnet behaviour in [U(TpMe2)2I]

Joana T. Coutinho、M.A. Antunes、Laura C. J. Pereira 等 7 位作者2012-01-01Dalton Transactions

[U(Tp(Me2))(2)I] exhibits at low temperatures single molecule magnet (SMM) behaviour comparable to its bipyridine derivative and related single ion U(III) complexes recently reported as SMMs. The trend of variation of the energy barrier for the magnetic relaxation in these compounds is well reproduced by quantum chemi…

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

Porous nanocubic Mn3O4–Co3O4 composites and their application as electrochemical supercapacitors

Huan Pang、Jiawei Deng、Jimin Du 等 8 位作者2012-01-01Dalton Transactions

A simple approach has been developed to fabricate ideal supercapacitors based on porous Mn(3)O(4)-Co(3)O(4) nanocubic composite electrodes. We can easily obtain porous corner-truncated nanocubic Mn(3)O(4)-Co(3)O(4) composite nanomaterials without any subsequent complicated workup procedure for the removal of a hard te…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced battery technologies research

Facile synthetic fabrication of iron oxide particles and novel hydrogen superoxide supercapacitors

P. Hallam、María Gómez-Mingot、Dimitrios K. Kampouris 等 4 位作者2012-01-01RSC Advances

A facile approach for the synthetic fabrication of iron oxide (Fe3O4) particles is presented and their potential application towards energy storage (as an electrode material within a supercapacitor) is explored. The Fe3O4 asymmetric supercapacitor is found to deliver a maximum specific capacitance of ∼120 F g−1 at a c…

Electrocatalysts for Energy ConversionSupercapacitor Materials and FabricationAdvanced battery technologies research

On the structure of the Au18(SR)14 cluster

Alfredo Tlahuice、Ignacio L. Garzón2012-01-01Physical Chemistry Chemical Physics

First principles calculations are used for a systematic search of the lowest-energy (most-stable) structure of the recently synthesized Au(18)(SR)(14) cluster. A comparison of the calculated optical absorption and electronic circular dichroism spectra, which are highly sensitive to the cluster structure and chirality,…

Nanocluster Synthesis and ApplicationsPharmacological Effects and Toxicity StudiesAdvanced Nanomaterials in Catalysis

Direct palladium-catalysed C–H arylation of BODIPY dyes at the 3- and 3,5-positions

Bram Verbelen、Volker Leen、Lina Wang 等 5 位作者2012-01-01Chemical Communications

A new one-step synthetic method towards 3- and 3,5-arylated BODIPY dyes via palladium-catalysed C-H arylation has been developed and its scope has been investigated.

Radical Photochemical ReactionsNanoplatforms for cancer theranosticsLuminescence and Fluorescent Materials

Sustained delivery of doxorubicin from thermogelling poly(PEG/PPG/PTMC urethane)s for effective eradication of cancer cells

Xian Jun Loh、William Guérin、Sophie M. Guillaume2012-01-01Journal of Materials Chemistry

A series of multiblock poly(ether carbonate urethane)s comprising poly(trimethylene carbonate), poly(ethylene glycol), and poly(propylene glycol) segments, with a molecular weight of 60 000 g mol−1, were synthesized. Thermogelling behaviors of the aqueous copolymer solutions were observed at gelation concentrations as…

Hydrogels: synthesis, properties, applicationsAdvanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and properties

High-performance dye-sensitized solar cells based on PEDOT nanofibers as an efficient catalytic counter electrode

Tae Hyun Lee、Kwangseok Do、Young Woo Lee 等 7 位作者2012-01-01Journal of Materials Chemistry

Poly(3,4-ethylenedioxythiophene) nanofibers (PEDOT-NFs) with 10–50 nm diameters and high electrical conductivity (up to 83 S cm−1) have been fabricated chemically within micelles composed of sodium dodecyl sulfate (SDS) as nanoreactors. Dimethyl sulfoxide (DMSO, 5 wt%) was added to a methanol-based colloidal dispersio…

TiO2 Photocatalysis and Solar CellsElectrochemical sensors and biosensorsConducting polymers and applications

Surfactant-encapsulated polyoxometalate building blocks: controlled assembly and their catalytic properties

Amjad Nisar、Xun Wang2012-01-01Dalton Transactions

Polyoxometalates (POMs) are discrete anionic metal-oxide nanoclusters which exhibit unrivalled structural diversity, exceptional physical properties, and have many potential applications. Nonetheless, possessing high crystalline energy and hydrophilic nature, the assembly of POM clusters into rationally design archite…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsNanocluster Synthesis and Applications