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Close Correlation between Metal Oxidation States and Molecular Structures in a Cobalt–Gold Multinuclear Coordination System with Mixed D ‐Penicillaminate and Tripodal Triphosphine

Yuji Hashimoto、Nobuto Yoshinari、Natsuko Matsushita 等 4 位作者2014-07-07European Journal of Inorganic Chemistry

Abstract A unique cobalt–gold coordination system, in which the oxidation states of the cobalt centers are closely correlated with the multinuclear molecular structures, is reported. This system contains a CoII3AuI6 nonanuclear structure in [Co3{Au3(tdme)(D‐pen‐N,O,S)3}2] ([2]) and a CoIIIAuI3 tetranuclear structure i…

Organometallic Complex Synthesis and CatalysisMetal complexes synthesis and propertiesMagnetism in coordination complexes

Phytoplankton from natural water bodies of the Patagonian Plateau

Irina Izaguirre、Juan Francisco Saad2014-07-07Advances in Limnology

The Patagonian Plateau is one of the most arid regions of Argentina, where mean annual rainfall ranges between 100 and 200 mm. This region contains different types of water bodies: large artifi cial lakes, permanent natural lakes, rivers and temporary ponds. In comparison with the Andean lakes, the available informati…

Marine and coastal ecosystemsAquatic Ecosystems and Phytoplankton DynamicsDiatoms and Algae Research

Single Crystalline-Like TiO2 Nanotube Fabrication with Dominant (001) Facets Using Poly(vinylpyrrolidone) for High Efficiency Solar Cells

Mi‐Hee Jung、Kyoung Chul Ko、Jin Yong Lee2014-07-07The Journal of Physical Chemistry C

The single crystalline-like TiO 2 nanotubes (SC-TiO 2 NTs) are prepared in the anodization process containing poly(vinylpyrrolidone) (PVP). The PVP in the electrolyte solution functions as a surfactant and controller of the crystal growth. The PVP is favorably adsorbed onto the (001) surfaces rather than onto the (101…

TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesQuantum Dots Synthesis And Properties

Power and efficiency analysis of a realistic resonant tunneling diode thermoelectric

Akshay Agarwal、Bhaskaran Muralidharan2014-07-07Applied Physics Letters

Low-dimensional systems with sharp features in the density of states have been proposed as a means for improving the efficiency of thermoelectric devices. Quantum dot systems, which offer the sharpest density of states achievable, however, suffer from low power outputs while bulk (3-D) thermoelectrics, while displayin…

Quantum and electron transport phenomenaAdvanced Thermoelectric Materials and DevicesAdvanced Physical and Chemical Molecular Interactions

In situ x-ray photoelectron spectroscopy and capacitance voltage characterization of plasma treatments for Al2O3/AlGaN/GaN stacks

Xiaoye Qin、Antonio T. Lucero、Angelica Azcatl 等 5 位作者2014-07-07Applied Physics Letters

We investigate the Al2O3/AlGaN/GaN metal-oxide-semiconductor structure pretreated by O2 anneals, N2 remote plasma, and forming gas remote plasma prior to atomic layer deposition of Al2O3 using in situ X-ray photoelectron spectroscopy, low energy electron diffraction, and capacitance- voltage measurements. Plasma pretr…

GaN-based semiconductor devices and materialsSemiconductor materials and devicesGa2O3 and related materials

Investigation and performance evaluation of carbon black- and carbon fibers-based wideband dielectric absorbers for X-band stealth applications

Himangshu B. Baskey、M. Jaleel Akhtar、T. C. Shami2014-07-07Journal of Electromagnetic Waves and Applications

This paper presents the design, preparation, and electromagnetic testing of wideband dielectric absorbers based on carbon fibers and carbon black powders for stealth applications. The specially prepared absorbers are characterized using the partially filled waveguide technique for the complex permittivity, and the ret…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesElectromagnetic Compatibility and Measurements

Tuning magnetotransport in PdPt/Y3Fe5O12: Effects of magnetic proximity and spin-orbit coupling

Xiang Zhou、Li Ma、Zhong Shi 等 7 位作者2014-07-07eScholarship (California Digital Library)

We report that anisotropic magnetoresistance (AMR) and anomalous Hall conductivity (AHC) in the Pd1-xPtx/Y3Fe5O12 (YIG) bilayers could be tuned by varying the Pt concentration (x) and also temperature (T). In particular, the AHC at low T changes its sign when x increases from 0 to 1, agreeing with the negative and pos…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagneto-Optical Properties and Applications

Silver Nanoparticle–Induced hMSC Proliferation Is Associated with HIF-1α-Mediated Upregulation of IL-8 Expression

Sung Kyu Jung、Jin Hee Kim、Hee Joo Kim 等 6 位作者2014-07-07Journal of Investigative Dermatology

silver nanoparticle human mesenchymal stem cell hypoxia-inducible factor-1α A recent study has reported that the application of silver nanoparticles (AgNPs) enhances wound healing (Tian et al., 2007Tian J. Wong K.K. Ho C.M. et al.Topical delivery of silver nanoparticles promotes wound healing.ChemMed Chem. 2007; 2: 12…

Mesenchymal stem cell researchElectrospun Nanofibers in Biomedical ApplicationsGraphene and Nanomaterials Applications

Indium tin oxide/InGaZnO bilayer stacks for enhanced mobility and optical stability in amorphous oxide thin film transistors

Yoon Jang Chung、Un Ki Kim、Eun Suk Hwang 等 4 位作者2014-07-07Applied Physics Letters

Optically more stable, high mobility InGaZnO thin film transistors were fabricated by implementing ultrathin In2O3-SnO2 (ITO) layers at the gate dielectric/semiconductor interface. The optimized device portrayed a high saturation mobility of ∼80 cm2/V s with off current values lower than 10−11A. The ITO layer also act…

ZnO doping and propertiesThin-Film Transistor TechnologiesTransition Metal Oxide Nanomaterials

Ultra-narrow ferromagnetic resonance in organic-based thin films grown via low temperature chemical vapor deposition

H.Y. Yu、Megan Harberts、Rohan Adur 等 7 位作者2014-07-07Applied Physics Letters

We present the growth of thin films of the organic-based ferrimagnetic semiconductor V[TCNE]x (x ∼ 2, TCNE: tetracyanoethylene) via chemical vapor deposition. Under optimized growth conditions, we observe a significant increase in magnetic homogeneity, as evidenced by a Curie temperature above 600 K and sharp magnetiz…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchOrganic and Molecular Conductors Research

TiO2‐coated CoCrMo: Improving the osteogenic differentiation and adhesion of mesenchymal stem cells in vitro

Niall Logan、A. M. A. Sherif、Alison J. Cross 等 8 位作者2014-07-07Journal of Biomedical Materials Research Part A

The current gold standard material for orthopedic applications is titanium (Ti), however, other materials such as cobalt-chromium-molybdenum (CoCrMo) are often preferred due to their wear resistance and mechanical strength. This study investigates if the bioactivity of CoCrMo can be enhanced by coating the surface wit…

Bone Tissue Engineering MaterialsOrthopaedic implants and arthroplastyTitanium Alloys Microstructure and Properties

Dynamic plasmonic beam shaping by vector beams with arbitrary locally linear polarization states

Zhongsheng Man、Luping Du、Changjun Min 等 8 位作者2014-07-07Applied Physics Letters

Vector beams, which have space-variant state of polarization (SOP) comparing with scalar beams with spatially homogeneous SOP, are used to manipulate surface plasmon polarizations (SPPs). We find that the excitation, orientation, and distribution of the focused SPPs excited in a high numerical aperture microscopic con…

Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchOrbital Angular Momentum in Optics

Contribution of Energetically Reactive Surface Features to the Dissolution of CeO 2 and ThO 2 Analogues for Spent Nuclear Fuel Microstructures

Claire L. Corkhill、Emmi Myllykylä、Daniel J. Bailey 等 9 位作者2014-07-07ACS Applied Materials & Interfaces

In the safety case for the geological disposal of nuclear waste, the release of radioactivity from the repository is controlled by the dissolution of the spent fuel in groundwater. There remain several uncertainties associated with understanding spent fuel dissolution, including the contribution of energetically react…

Radioactive element chemistry and processingNuclear Materials and PropertiesNuclear materials and radiation effects

Biomineralization in Mediterranean Corals: The Role of the Intraskeletal Organic Matrix

Michela Reggi、Simona Fermani、V. Landi 等 12 位作者2014-07-07Crystal Growth & Design

The precipitation of calcium carbonate was carried out in the presence of the intraskeletal organic matrix (OM) extracted from Mediterranean corals. They were diverse in growth form and trophic strategy, Balanophyllia europaea and Leptopsammia pruvoti —solitary corals, only the first zooxanthellate coral—and Cladocora…

Coral and Marine Ecosystems StudiesCalcium Carbonate Crystallization and InhibitionMarine Sponges and Natural Products

Collective Plasmonic Resonances on Arrays of Cysteine-Functionalized Silver Nanoparticle Aggregates

Mária Csete、Anikó Szalai、Edit Csapó 等 6 位作者2014-07-07The Journal of Physical Chemistry C

UV–visible spectroscopy on biofunctionalized spherical silver nanoparticle containing dispersions has shown that bioconjugation with L -cysteine results in aggregate formation, which causes appearance of UV and red-shifted absorptance maxima simultaneously. On the basis of comparative study of spectra registered exper…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchOptical Coatings and Gratings

(NH4)4Sn2S6·3H2O: Crystal Structure, Thermal Decomposition, and Precursor for Textured Thin Film

Peter Nørby、Jacob Overgaard、Per Sigaard Christensen 等 10 位作者2014-07-07Chemistry of Materials

Understanding the condensation of the dimeric thiostannate(IV) [Sn 2 S 6 ] 4– to SnS 2 is of key importance for the development of solution processing of advanced tin(IV) sulfide based electronic devices such as photovoltaics (e.g., Cu 2 ZnSnS 4, CZTSSe) and thin-film transistors. Here, we report the crystal structure…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCrystal Structures and Properties

Configuration‐ and Conformation‐Dependent Electronic‐Structure Variations in 1,4‐Disubstituted Cyclohexanes Enabled by a Carbon‐to‐Silicon Exchange

Rikard Emanuelsson、Henrik Löfås、Andreas Wallner 等 10 位作者2014-07-07Chemistry - A European Journal

Cyclohexane, with its well-defined conformers, could be an ideal force-controlled molecular switch if it were to display substantial differences in electronic and optical properties between its conformers. We utilize σ conjugation in heavier analogues of cyclohexanes (i.e. cyclohexasilanes) and show that 1,4-disubstit…

Molecular Junctions and NanostructuresLuminescence and Fluorescent MaterialsPhotoreceptor and optogenetics research

Preparation of the First Manganese(III) and Manganese(IV) Azides

Ralf Haiges、Robert J. Buszek、Jerry A. Boatz 等 4 位作者2014-07-07Angewandte Chemie International Edition

Fluoride-azide exchange reactions of Me3SiN3 with MnF2 and MnF3 in acetonitrile resulted in the isolation of Mn(N3)2 and Mn(N3)3 ⋅CH3CN, respectively. While Mn(N3)2 forms [PPh4]2[Mn(N3)4] and (bipy)2Mn(N3)2 upon reaction with PPh4N3 and 2,2'-bipyridine (bipy), respectively, the manganese(III) azide undergoes dispropor…

Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesInorganic Chemistry and Materials

Modulation of frustration in folding by sequence permutation

R. Paul Nobrega、Karunesh Arora、Sagar V. Kathuria 等 11 位作者2014-07-07Proceedings of the National Academy of Sciences

Folding of globular proteins can be envisioned as the contraction of a random coil unfolded state toward the native state on an energy surface rough with local minima trapping frustrated species. These substructures impede productive folding and can serve as nucleation sites for aggregation reactions. However, little…

Protein Structure and DynamicsBacterial Genetics and BiotechnologyEnzyme Structure and Function

Dielectric and thermal studies of segmental dynamics in silica/PDMS and silica/titania/PDMS nanocomposites

Iryna Sulym、Panagiotis Α. Klonos、M.V. Borysenko 等 5 位作者2014-07-07Journal of Applied Polymer Science

ABSTRACT Effects of silica and silica/titania nanoparticles on glass transition and segmental dynamics of poly(dimethylsiloxane) (PDMS) were studied for composites of a core–shell type using differential scanning calorimetry, thermally stimulated depolarization current, and dielectric relaxation spectroscopy technique…

Polymer Nanocomposites and PropertiesPolymer Surface Interaction StudiesAnalytical Chemistry and Sensors