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Stable spectral dip formation and multicolour changes of plasmonic gold nanoparticles on TiO 2

Yohei Konishi、Ichiro Tanabe、Tetsu Tatsuma2012-11-26Chemical Communications

Spectral dip formation at arbitrary wavelengths and the corresponding multicolour changes were achieved by using plasmonic Au nanoparticles on TiO(2), based on plasmon-induced charge separation and a coordination effect of iodide ions. The dips were stable in air under white light, in marked contrast to the case of co…

Gold and Silver Nanoparticles Synthesis and ApplicationsCopper-based nanomaterials and applicationsAdvanced Nanomaterials in Catalysis

Investigation of dealloying by ultra‐high‐resolution nanotomography

T. Hashimoto、M. Curioni、Xiaorong Zhou 等 6 位作者2012-11-26Surface and Interface Analysis

Sequential sectioning and sequential imaging by scanning electron microscopy have been employed to obtain three‐dimensional images of an AA2024‐T3 aluminium alloy after exposure to sodium chloride solution. The three‐dimensional arrangement of intermetallic particles within the alloy was disclosed, indicating that gro…

Corrosion Behavior and InhibitionAnodic Oxide Films and NanostructuresNanoporous metals and alloys

Crystallising trimesic acid from DMSO solutions – can crystallography teach us anything about the process of crystal nucleation?

Roger J. Davey、Monika Brychczynska、G. Sadiq 等 5 位作者2012-11-26CrystEngComm

Using combined X-ray diffraction and FTIR spectroscopy, a remarkable similarity is revealed between the local environments of trimesic acid in solution and in its most metastable trisolvate with DMSO. The implications of this for the nature of the nucleation process are discussed.

Crystallography and molecular interactionsCrystallization and Solubility StudiesX-ray Diffraction in Crystallography

Improved and orange emission from an n-ZnO/p-Si heterojunction light emitting device with NiO as the intermediate layer

Huihui Huang、Guojia Fang、Xiaoming Mo 等 10 位作者2012-11-26Applied Physics Letters

n-ZnO/p-Si heterojunction light emitting devices with and without a NiO intermediate layer were fabricated using a radio frequency magnetron sputtering system. Electroluminescence measurements revealed that the device with the NiO intermediate layer exhibits a sharper and stronger orange emission peaks at ∼670 nm comp…

ZnO doping and propertiesThin-Film Transistor TechnologiesCopper-based nanomaterials and applications

Migration mechanisms of oxygen interstitial clusters in UO2

Xian-Ming Bai、Anter El–Azab、Jianguo Yu 等 4 位作者2012-11-26Journal of Physics Condensed Matter

Understanding the migration kinetics of radiation-induced point defects and defect clusters is key to predicting the microstructural evolution and mass transport in nuclear fuels. Although the diffusion kinetics of point defects in UO(2) is well explored both experimentally and theoretically, the kinetics of defect cl…

Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties

Thermal switching between blue and red luminescence in magnetic chiral cyanido-bridged Eu III –W V coordination helices

Szymon Chorąży、Koji Nakabayashi、Noriaki Ozaki 等 8 位作者2012-11-26RSC Advances

Unique one-dimensional cyanido-bridged {[EuIII(RR-Pri-Pybox)(dmf)4]3[WV(CN)8]3}n·dmf·8H2O (1-RR) and {[EuIII(SS-Pri-Pybox)(dmf)4]3[WV(CN)8]3}n·dmf·8H2O (1-SS) (Pri-Pybox = 2,2′-(2,6-pyridinediyl)bis(4-isopropyl-2-oxazoline)) chains were synthesized and characterized. They combine chiral helicity with paramagnetism and…

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

Synthesis of Poly(ϵ‐caprolactone‐co‐methacrylic acid) Copolymer via Phosphazene‐Catalyzed Hybrid Copolymerization

Jinbao Xu、Hongjun Yang、Guangzhao Zhang2012-11-26Macromolecular Chemistry and Physics

Abstract Poly( ϵ ‐caprolactone‐ co ‐ tert ‐butyl methacrylate) (CL‐ co ‐BMA) random copolymer is synthesized via hybrid copolymerization with 1‐ tert ‐butyl‐4,4,4‐tris(dimethylamino)‐2,2‐bis[tris(dimethylamino)phophoranylidenamino]‐2Λ5,4Λ5‐catenadi(phosphazene) ( t ‐BuP 4 ) as the catalyst. The copolymer is hydrolyzed…

biodegradable polymer synthesis and propertiesDendrimers and Hyperbranched PolymersAntimicrobial agents and applications

RAFT‐mediated synthesis and temperature‐induced responsive properties of poly(2‐(2‐methoxyethoxy)ethyl methacrylate) brushes

Adem Zengi̇n、Ertan Yıldırım、Tuncer Çaykara2012-11-26Journal of Polymer Science Part A Polymer Chemistry

Abstract Well‐defined, high‐density poly(2‐(2‐methoxyethoxy)ethyl methacrylate) [poly(MEO 2 MA)] brushes were fabricated through a reliable strategy by the combination of self‐assembly of a monolayer of 3‐aminopropyltrimethoxy silane on silicon surface to immobilize 4‐cyano‐4‐(dodecylsulfanylthiocarbonyl)sulfanyl pent…

Hydrogels: synthesis, properties, applicationsAdvanced Polymer Synthesis and CharacterizationPolymer Surface Interaction Studies

Dinuclear Complexes with a Triple N1,N2‐Triazole Bridge That Exhibit Partial Spin Crossover and Weak Antiferromagnetic Interactions

Olivier Roubeau、Patrick Gámez、Simon J. Teat2012-11-26European Journal of Inorganic Chemistry

Abstract The reaction of 4‐phenylimino‐1,2,4‐triazole ( 1 ) with Fe II , Co II , Ni II and Cu II thiocyanate produces a series of analogous dinuclear compounds of formula [M 2 ( 1 ) 5 (NCS) 4 ] ( 2 – 5 ) as demonstrated by single‐crystal X‐ray diffraction studies of the Fe II ( 2 ) and Co II ( 3 ) analogues. The magne…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesElectron Spin Resonance Studies

l- and d-[Ln(HCO2)(SO4)(H2O)]n (Ln = La, Ce, Pr, Nd, and Eu): Chiral Enantiomerically 3D Architectures Constructed by Double −[Ln–O]n– Helices

Weiwei Ju、Deng Zhang、Dunru Zhu 等 4 位作者2012-11-26Inorganic Chemistry

A total of 10 three-dimensional chiral coordination compounds L- and D-[Ln(HCO(2))(SO(4))(H(2)O)](n) (Ln = La, Ce, Pr, Nd, and Eu) have been synthesized without any chiral auxiliary and characterized by IR, thermogravimetric, and elemental analyses. Their structures were determined by single-crystal X-ray structural a…

Metal-Organic Frameworks: Synthesis and ApplicationsCrystal Structures and PropertiesPolyoxometalates: Synthesis and Applications

Porous alumina and zirconia ceramics with tailored thermal conductivity

Eva Gregorová、Willi Pabst、Zdeněk Sofer 等 5 位作者2012-11-26Journal of Physics Conference Series

The thermal conductivity of porous ceramics can be tailored by slip casting and uniaxial dry pressing, using either fugitive pore formers (saccharides) or partial sintering. Porous alumina and zirconia ceramics have been prepared using appropriate powder types (ungranulated for casting, granulated for pressing) and id…

Advanced ceramic materials synthesisThermal properties of materialsHeat and Mass Transfer in Porous Media

An in vitro assessment of the interaction of cadmium selenide quantum dots with DNA, iron, and blood platelets

Rekha Dunpall、Adeola A. Nejo、Viswanadha Srirama Rajasekhar Pullabhotla 等 6 位作者2012-11-26IUBMB Life

Cadmium selenide (CdSe) quantum dots have gained increased attention for their potential use in biomedical applications. This has raised interest in assessing their toxicity. In this study, water-soluble, cysteine-capped CdSe nanocrystals with an average size of 15 nm were prepared through a one-pot solution-based met…

Quantum Dots Synthesis And PropertiesPregnancy and Medication ImpactCOVID-19 Impact on Reproduction

Autothermal Partial Oxidation of Glycerol to Syngas over Pt-, LaMnO3-, and Pt/LaMnO3-Coated Monoliths

Shih-Kang Liu、Yu‐Chuan Lin2012-11-26Industrial & Engineering Chemistry Research

Glycerol and glycerol/water solution were converted to syngas over Pt-, LaMnO 3 -, and Pt/LaMnO 3 -coated monoliths under autothermal partial oxidation. XRD and SEM were used to characterize the phase compositions and surface morphologies of freshly prepared and postreaction catalysts. A continuous fixed-bed design, w…

Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceCatalysts for Methane Reforming

Intrinsically green iron oxide nanoparticles? From synthesis via (eco-)toxicology to scenario modelling

Juliane Filser、Darius Arndt、Jonas Baumann 等 22 位作者2012-11-26Nanoscale

Iron oxide nanoparticles (IONP) are currently being studied as green magnet resonance imaging (MRI) contrast agents. They are also used in huge quantities for environmental remediation and water treatment purposes, although very little is known on the consequences of such applications for organisms and ecosystems. In…

Nanoparticles: synthesis and applicationsIron oxide chemistry and applicationsEnvironmental remediation with nanomaterials

Inhomogeneous linewidth broadening and radiative lifetime dispersion of size dependent direct bandgap radiation in Si quantum dot

Chung-Lun Wu、Gong‐Ru Lin2012-11-26AIP Advances

The SiOx (SiOx:Si-QDs) with buried Si quantum dots (Si-QDs) is synthesized by plasma-enhanced chemical vapor deposition (PECVD), and the size-dependent wave-function of Si-QDs embedded in Si-rich SiO2 matrix is experimentally and theoretically analyzed to reformulate its bandgap energy as Eg(d) = 1.12+5.83/d1.78. The…

Semiconductor materials and devicesThin-Film Transistor TechnologiesSilicon Nanostructures and Photoluminescence

Elastohydrodynamic problems in quasicrystal elasticity theory and wave propagation

Xian‐Fang Li2012-11-26The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics

Elastohydrodynamic problems of decagonal quasicrystals are analysed where the phonon field obeys wave equation and the phason field obeys diffusive wave equation. Basic equations are solved in the quasiperiodic plane and periodic plane, respectively. Final governing equations of dynamic behaviours of decagonal quasicr…

Quasicrystal Structures and PropertiesMineralogy and Gemology Studies

Kinetics of Reduction of a RuO2(110) Film on Ru(0001) by H2

D. Ugur、A. J. Storm、R. Verberk 等 5 位作者2012-11-26The Journal of Physical Chemistry C

The kinetics and mechanism of the full reduction of a thin RuO 2 film with a stoichiometric (110) surface on Ru(0001) by H 2 has been studied in the temperature range of 100 to 400 °C at 10 –2 to 10 –4 Pa. The reduction kinetics is dominated by the creation of oxygen vacancies and their annihilation upon transformatio…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceAmmonia Synthesis and Nitrogen Reduction

TDDFT study of time-dependent and static screening in graphene

Vito Despoja、D. J. Mowbray、D. Vlahović 等 4 位作者2012-11-26Physical Review B

Time-dependent density functional theory (TDDFT) within the random phase approximation (RPA) is used to obtain the time evolution of the induced potential produce by the sudden formation of a C 1s core hole inside a graphene monolayer, and to show how the system reaches the equilibrium potential. The characteristic os…

Graphene research and applicationsChemical and Physical Properties of MaterialsSurface and Thin Film Phenomena

Designer nanojunctions: orienting shaped nanoparticles within polymer thin-film nanocomposites

Bo Gao、Yahya Alvi、David A. Rosen 等 5 位作者2012-11-26Chemical Communications

We demonstrate that polymer-grafted metal nanoparticles of various shapes and dimensions self-assemble into arrays of string-like superstructures upon phase separation within a matrix polymer. Interparticle orientation within these nanocomposites can be dictated by the chain length of the grafted polymer.

Gold and Silver Nanoparticles Synthesis and ApplicationsSurfactants and Colloidal SystemsPickering emulsions and particle stabilization

Optical waveguides from 4-aryl-4H-1,2,4-triazole-based supramolecular structures

David Cáceres‐Castillo、Cristina Cebrián、Antonio M. Rodríguez 等 9 位作者2012-11-26Chemical Communications

Ribbon-like supramolecular structures prepared by the organized aggregation of 4-aryl-4H-1,2,4-triazoles act as optical waveguides that propagate photoluminescence.

Luminescence and Fluorescent MaterialsPhotochromic and Fluorescence ChemistrySynthesis and Characterization of Heterocyclic Compounds