Elif Güngör、Hülya Kara、Enrique Colacio 等 4 位作者2014-02-24European Journal of Inorganic Chemistry
Abstract Two alkoxo‐bridged copper(II) tridentate Schiff base complexes [{Cu(H 2 L1)} 4 ] ( 1 ) [H 2 L1 = N ‐(2‐hydroxyethyl)‐3,5‐di‐ tert ‐butylsalicylaldimine] and {Cu(H 2 L2)} 4 ( 2 ) [H 2 L2 = N ‐(2‐hydroxyethyl)‐4‐methoxysalicylaldimine] have been synthesized and structurally and magnetically characterized. X‐ray…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Peng Xu、Daniel Phelan、Jong Seok Jeong 等 5 位作者2014-02-24Applied Physics Letters
By controlling stoichiometry via a hybrid molecular beam epitaxy approach, we report on the study of thin film growth and the electronic transport properties of phase-pure, epitaxial NdTiO3/SrTiO3 heterostructures grown on (001) (La0.3Sr0.7)(Al0.65Ta0.35)O3 (LSAT) substrates as a function of cation stoichiometry in Nd…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
T. Zykova-Timan、Ekhard K. H. Salje2014-02-24Applied Physics Letters
We present computer simulations of previously unknown polarization singularities (vortexes) inside polar SrTiO3 twin boundaries. Usually polarity in twin walls is ferri-electric, whereas vortex excitations lead to true ferroelectricity on a very local scale. As a result, in-plane electric fields can selectively stabil…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsElectronic and Structural Properties of Oxides
Deyu Lu、Ping Liu2014-02-24The Journal of Chemical Physics
The density functional theory (DFT)+U method has been widely employed in theoretical studies on various ceria systems to correct the delocalization bias in local and semi-local DFT functionals with moderate computational cost. We present a systematic and quantitative study, aiming to gain better understanding of the d…
Catalytic Processes in Materials ScienceRadioactive element chemistry and processingCatalysis and Oxidation Reactions
L. I. Johansson、Rickard Armiento、J. Ávila 等 8 位作者2014-02-24Scientific Reports
Only a single linearly dispersing π-band cone, characteristic of monolayer graphene, has so far been observed in Angle Resolved Photoemission (ARPES) experiments on multilayer graphene grown on C-face SiC. A rotational disorder that effectively decouples adjacent layers has been suggested to explain this. However, the…
Graphene research and applicationsTopological Materials and PhenomenaSurface and Thin Film Phenomena
Gang Wang、L. Bouet、David Lagarde 等 8 位作者2014-02-24HAL (Le Centre pour la Communication Scientifique Directe)
Optical interband transitions in monolayer transition metal dichalcogenides such as WSe2 and MoS2 are governed by chiral selection rules. This allows efficient optical initialization of an electron in a specific K-valley in momentum space. Here we probe the valley dynamics in monolayer WSe2 by monitoring the emission…
2D Materials and ApplicationsChalcogenide Semiconductor Thin FilmsSolid-state spectroscopy and crystallography
Akash Saini、Virander S. Chauhan2014-02-24Langmuir
Two highly fibrillogenic peptide sequences (MNFGAFSINP and EDLIIKGISV) were previously reported in the C-terminal fragment (CTF) of TDP-43 (220-414), a protein recently implicated in neuro-degenerative diseases such as amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD-U). It was observed…
Chemical Synthesis and AnalysisAntimicrobial Peptides and ActivitiesSupramolecular Self-Assembly in Materials
Karen Low、Nicha Chartuprayoon、Cristina Echeverria 等 7 位作者2014-02-24Nanotechnology
Electrospinning was utilized to synthesize a polyaniline (PANI)/poly(ε-caprolactone) (PCL) composite in the form of nanofibers to examine its gas sensing performance. Electrical conductivity of the composite nanofibers was tailored by secondary doping with protonic acids including hydrochloride (HCl) or camphorsulfoni…
Gas Sensing Nanomaterials and SensorsConducting polymers and applicationsAnalytical Chemistry and Sensors
Jie Gao、Haibo Zhao、Xiaofang Yang 等 5 位作者2014-02-24Angewandte Chemie International Edition
Vibrational spectroscopic measurements and density functional calculations were used to identify a preferential catalytic mechanism for the transformation of acetylene, HC-CH, to vinylidene, C-CH2, on surfaces of Pt-Sn ordered alloys. In this mechanism, two adjacent Pt atoms adsorb an acetylene molecule and a third ne…
Catalytic Processes in Materials ScienceCatalysis for Biomass ConversionCatalysis and Hydrodesulfurization Studies
Shin‐ichiro Ishida、Tomohiro Higashino、Shigeki Mori 等 9 位作者2014-02-24Angewandte Chemie International Edition
Protonation of meso-aryl [28]hexaphyrins(1.1.1.1.1.1) triggered conformational changes. Whereas protonation with trifluoroacetic acid led to the formation of monoprotonated Möbius aromatic species, protonation with methanesulfonic acid led to the formation of diprotonated triangular antiaromatic species. A peripherall…
Photosynthetic Processes and MechanismsPorphyrin and Phthalocyanine ChemistrySynthesis and Properties of Aromatic Compounds
Beatriz Liliana España‐Sánchez、Carlos Alberto Ávila‐Orta、Felipe Padilla‐Vaca 等 11 位作者2014-02-24Plasma Processes and Polymers
Argon surface plasma treatment (APT) of poly(propylene)/silver (PP/Ag) and poly(propylene)/copper (PP/Cu) nanocomposite improves their antibacterial properties against pathogenic bacteria. Dispersions of PP/Ag and PP/Cu nanocomposites were prepared by sonication assisted melt mixing 0.05, 0.5, and 5 w/w% metal nanopar…
Nanoparticles: synthesis and applicationsPolymer Nanocomposite Synthesis and IrradiationNanotechnology research and applications
David Schweinfurth、Yvonne Rechkemmer、Stephan Hohloch 等 10 位作者2014-02-24Chemistry - A European Journal
The complexes [{(tmpa)Co(II) }2 (μ-L(1) )(2-) ](2+) (1(2+) ) and [{(tmpa)Co(II) }2 (μ-L(2) )(2-) ](2+) (2(2+) ), with tmpa=tris(2-pyridylmethyl)amine, H2 L(1) =2,5-di-[2-(methoxy)-anilino]-1,4-benzoquinone, and H2 L(2) =2,5-di-[2-(trifluoromethyl)-anilino]-1,4-benzoquinone, were synthesized and characterized. Structur…
Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms
Kendal Clark、Xiaoguang Zhang、Gong Gu 等 7 位作者2014-02-24Physical Review X
Friedel oscillation refers to the quantum interference phenomena where electrons in a solid form standing waves on the solid's surface as a result of scattering by defects. A combined theoretical and experimental work shows that Friedel oscillation can open an energy gap in graphene.
Carbon Nanotubes in CompositesGraphene research and applicationsThermal properties of materials
Yosuke Hamasaki、Takao Shimizu、Hiroki Taniguchi 等 6 位作者2014-02-24Applied Physics Letters
GaFeO3-type AlFeO3 is consisted of oxygen octahedra and tetrahedra containing Al and Fe ions and is known to have a non-centrosymmetric polar structure with space group Pna21. We tried to grow epitaxial GaFeO3-type AlFeO3 films on SrTiO3 (111) substrates by pulsed laser deposition technique. Both the atomic arrangemen…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
Minoru Fujii、Hiroshi Sugimoto、Masataka Hasegawa 等 4 位作者2014-02-24Journal of Applied Physics
Boron (B) and phosphorus (P) codoped silicon (Si) nanocrystals, which exhibit very wide range tunable luminescence due to the donor to acceptor transitions and can be dispersed in polar liquids without organic ligands, are studied by Raman scattering and X-ray photoelectron spectroscopies. Codoped Si nanocrystals exhi…
Silicon Nanostructures and PhotoluminescenceNanowire Synthesis and ApplicationsSemiconductor materials and interfaces
Kentaro Shima、Katsuya Mutoh、Yoichi Kobayashi 等 4 位作者2014-02-24Journal of the American Chemical Society
The widely tunable optical properties and the visible sensitivity have been required for fast photochromic molecules whose coloration-decoloration cycle completes in μs to ms time scale not only for practical applications such as full-color holographic displays but also for fundamental researches in biochemistry. Howe…
Porphyrin and Phthalocyanine ChemistrySupramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence Chemistry
Lesley W. Chow、Astrid Armgarth、Jean‐Philippe St‐Pierre 等 9 位作者2014-02-24Advanced Healthcare Materials
Specific binding peptides are used to spatially organize biomolecule gradients within an electrospun fiber scaffold. Different biomolecule-binding peptide-polymer conjugates are sequentially co-electrospun with a fiber-forming host polymer to generate opposing gradients of peptide functionalization. The binding peptid…
RNA Interference and Gene DeliveryElectrospun Nanofibers in Biomedical ApplicationsSilk-based biomaterials and applications
Koen Martens、Naga Phani B. Aetukuri、Jaewoo Jeong 等 5 位作者2014-02-24Applied Physics Letters
Key to the growth of epitaxial, atomically thin films is the preparation of the substrates on which they are deposited. Here, we report the growth of atomically smooth, ultrathin films of VO2 (001), only ∼2 nm thick, which exhibit pronounced metal-insulator transitions, with a change in resistivity of ∼500 times, at a…
Gas Sensing Nanomaterials and SensorsTransition Metal Oxide NanomaterialsGa2O3 and related materials
Stanislav G. Falkovich、Sergey V. Lyulin、Victor M. Nazarychev 等 7 位作者2014-02-24Journal of Polymer Science Part B Polymer Physics
ABSTRACT Revealing the way of how modification of the chemical structure of a polymer affects its macroscopic physical properties offers an opportunity to develop novel polymer materials with pre‐defined characteristics. To address this problem two thermoplastic polyimides, ULTEM™ and EXTEM™, were simulated with small…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesSynthesis and properties of polymers
Rui Wang、Jingsong Wei、Yongtao Fan2014-02-24Optics Express
Chalcogenide phase-change thin films are used in many fields, such as optical information storage and solid-state memory. In this work, we present another application of chalcogenide phase-change thin films, i.e., as grayscale photolithgraphy materials. The grayscale patterns can be directly inscribed on the chalcogen…
Chalcogenide Semiconductor Thin FilmsPhase-change materials and chalcogenidesAdvanced Semiconductor Detectors and Materials