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Solubility of Chloroquine Diphosphate and 4,7-Dichloroquinoline in Water, Ethanol, Tetrahydrofuran, Acetonitrile, and Acetone from (298.2 to 333.2) K

Ali Daneshfar、Saber Vafafard2009-05-18Journal of Chemical & Engineering Data

The solubilities of chloroquine diphosphate and 4,7-dichloroquinoline in water, ethanol, tetrahydrofuran, acetone, and acetonitrile were measured over the temperature range of (298.2 to 333.2) K. The solubilities of both analytes in different solvents increase smoothly with temperature. On the basis of the solubility…

Analytical Chemistry and ChromatographyCrystallization and Solubility StudiesPharmacological Effects of Natural Compounds

Stoichiometry, spin fluctuations, and superconductivity in LaNiPO

Tyrel M. McQueen、Tomasz Klimczuk、A. J. Williams 等 5 位作者2009-05-18Physical Review B

Superconductivity in LaNiPO is disrupted by small $(\ensuremath{\sim}5%)$ amounts of nonstoichiometry on the lanthanum site, even though the electronic contribution to the heat capacity increases with increasing nonstoichiometry. All samples also exhibit specific-heat anomalies consistent with the presence of ferromag…

Rare-earth and actinide compoundsIron-based superconductors researchInorganic Chemistry and Materials

Catalytic porous ceramic prepared in‐situ by sol‐gelation for butane‐to‐syngas processing in microreactors

Nico Hotz、Nurten Koc、Timo Schwamb 等 5 位作者2009-05-18AIChE Journal

Abstract In this study, a novel flow‐based method is presented to place catalytic nanoparticles into a reactor by sol‐gelation of a porous ceramic consisting of Rh/ceria/zirconia nanoparticles, silica sand, ceramic binder, and a gelation agent. This method allows for the placement of a liquid precursor containing the…

Catalytic Processes in Materials ScienceCatalysts for Methane ReformingCatalysis and Oxidation Reactions

Response of the Crystal Structure and Electronic Properties to Calcium Substitution in NdFeAsO

A. Marcinkova、Emmanuelle Suard、Andrew N. Fitch 等 5 位作者2009-05-18Chemistry of Materials

Synchrotron X-ray, neutron powder diffraction, magnetic susceptibility, and electrical resistance measurements were used to investigate the Nd 1− x Ca x FeAsO series. The solubility of calcium is limited to 0 ≤ x ≤ 0.05. Within this interval, the iron arsenide layer contracts linearly in agreement with the hole doping…

Rare-earth and actinide compoundsIron-based superconductors research

Tetragonal micro/nanotwins in 0.91Pb(Zn1/3Nb2/3)O3−0.09PbTiO3 revealed by reciprocal space mapping

Wei Sea Chang、L.C. Lim、Ping Yang 等 7 位作者2009-05-18Applied Physics Letters

Reciprocal space mapping (RSM) of the relaxor ferroelectric 0.91Pb(Zn1/3Nb2/3)O3−0.09PbTiO3 (PZN-9%PT) single crystals has been performed by using high-resolution synchrotron x-ray diffraction as a function of temperature. The PZN–9%PT crystal consists of tetragonal micro/nanotwin domains and undergoes a sequence of r…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis

1‐Methyl‐3‐pyridine‐2‐yl‐thiourea as inhibitor for acid corrosion of stainless steel

Seyed Mohammad Ali Hosseini、Mehdi Salari、Mehdi Ghasemi2009-05-18Materials and Corrosion

Abstract The inhibiting effect of 1‐methyl‐3‐pyridine‐2‐yl‐thiourea (MPT) on the corrosion of stainless steel in 0.5 M H 2 SO 4 solution was investigated using weight loss and potentiostatic polarization techniques. The percentage inhibition efficiencies and surface coverage degrees increased with increasing additive…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability

Electrochemical Reduction Synthesis of Photoluminescent Silicon Nanocrystals

Jonghoon Choi、Nam Sun Wang、Vytas Reipa2009-05-18Langmuir

An efficient synthesizing procedure of photoluminescent silicon nanocrystals is demonstrated by means of ultrasound assisted electrochemical octyltrichlorosilane reduction that produces octane terminated Si nanocrystals in a single step. The described procedure allows one to make Si nanocrystals with alkyl surface ter…

Silicon Nanostructures and PhotoluminescenceNanowire Synthesis and ApplicationsAnodic Oxide Films and Nanostructures

High-order vibration modes of bimetallic Ag-Au nanoparticles embedded in glass

S. V. Adichtchev、Sergey Sirotkin、Guillaume Bachelier 等 8 位作者2009-05-18Physical Review B

High-resolution low-frequency Raman scattering measurements from embedded AgAu nanoparticles unveil efficient scattering by harmonics of both the quadrupolar and the spherical modes. Comparing the experimental data with theoretical calculations that account for both the embedding medium and the resonant Raman process…

Gold and Silver Nanoparticles Synthesis and ApplicationsNonlinear Optical Materials StudiesProtein Interaction Studies and Fluorescence Analysis

Facile Fabrication and Superparamagnetism of Silica‐Shielded Magnetite Nanoparticles on Carbon Nitride Nanotubes

Jung Woo Lee、Ravindranath Viswan、Yoon Jeong Choi 等 8 位作者2009-05-18Advanced Functional Materials

Abstract Using conventional methods to synthesize magnetic nanoparticles (NPs) with uniform size is a challenging task. Moreover, the degradation of magnetic NPs is an obstacle to practical applications. The fabrication of silica‐shielded magnetite NPs on carbon nitride nanotubes (CNNTs) provides a possible route to o…

Advancements in Battery MaterialsGraphene research and applicationsSupercapacitor Materials and Fabrication

Thin film evolution: Dewetting dynamics of a bimodal molecular system

Jessica M. Topple、Sarah A. Burke、Shawn Fostner 等 4 位作者2009-05-18Physical Review B

Deposition of submonolayer coverages of 3,4,9,10-perylenetetracarboxylic diimide onto NaCl(001) results in the bimodal growth of coexisting square and needle-shaped islands. The epitaxy of each island type was determined from molecular and atomic resolution noncontact atomic force microscopy images. Postdeposition, th…

Molecular Junctions and NanostructuresBlock Copolymer Self-AssemblySurface and Thin Film Phenomena

Toward Electrochromic Device Using Solid Electrolyte with Polar Polymer Host

Anh Chien Nguyen、Shanxin Xiong、Jan Ma 等 5 位作者2009-05-18The Journal of Physical Chemistry B

Polymer electrolyte is an important component in many multilayer devices such as batteries, fuel cells, and electrochromic devices. The effects of polymer electrolyte solidification on the ionic movement and device performance are presented based on near-infrared (IR) (860-2500 nm) electrochromic (EC) devices using th…

Conducting polymers and applicationsTransition Metal Oxide NanomaterialsPolyoxometalates: Synthesis and Applications

Synthesis of Visible Light-Sensitive ZnO Nanostructures: Subwavelength Waveguides

Jooran Lee、Minjoong Yoon2009-05-18The Journal of Physical Chemistry C

Single crystalline ZnO nanowires and nanorods were synthesized by a new sol−gel method carried out through formation of liposome−ZnO nanocomposites with or without hydrothermal reaction, respectively, and they were characterized to be hexagonal wurtzite structure by measurements of XRD patterns and SEM and TEM images.…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials

Correlation Between Wettability and Cleanability of Polyester Fabrics Modified by a Soil Release Polymer and Their Topographic Structure

Mir Mohammad Badrul Hasan、Alfredo Calvimontes、Victoria Dutschk2009-05-18Journal of Surfactants and Detergents

Abstract In this study, it was found that images scanned by a non‐contact optical instrument for topographic characterisation based on the principle of chromatic aberration give sufficient information to know the exact location of soil release polymer (SRP) deposition over fabrics. Through the comparison of reflected…

Surface Modification and SuperhydrophobicityMicroplastics and Plastic PollutionTextile materials and evaluations

UV‐activated hydrosilylation: a facile approach for synthesis of hyperbranched polycarbosilanes

Guobin Zhang、Jie Kong、Xiaodong Fan 等 6 位作者2009-05-18Applied Organometallic Chemistry

Abstract A facile approach for synthesis of hyperbranched polycarbosilane from AB 2 monomer via UV‐activated hydrosilylation is presented in this communication. The polymerization process was monitored using real‐time FTIR spectroscopy and the resulting hyperbranched polycarbosilanes were characterized using 1 H‐NMR,…

Synthetic Organic Chemistry MethodsDendrimers and Hyperbranched PolymersSynthesis and properties of polymers

A Nanodot Array Modulates Cell Adhesion and Induces an Apoptosis-Like Abnormality in NIH-3T3 Cells

Hsu-An Pan、Yao‐Ching Hung、Chia-Wei Su 等 7 位作者2009-05-18Nanoscale Research Letters

Micro-structures that mimic the extracellular substratum promote cell growth and differentiation, while the cellular reaction to a nanostructure is poorly defined. To evaluate the cellular response to a nanoscaled surface, NIH 3T3 cells were grown on nanodot arrays with dot diameters ranging from 10 to 200 nm. The nan…

Cellular Mechanics and InteractionsPolymer Surface Interaction StudiesAnodic Oxide Films and Nanostructures

Photoalignment effect in a liquid-crystal film doped with nanoparticles and azo-dye

Wen-Zheng Chen、Yi‐Tai Tsai、Tsung‐Hsien Lin2009-05-18Applied Physics Letters

This study discusses the photoalignment effect in a liquid-crystal (LC) film that is doped with nanoparticles and azo-dye. The vertical alignment induced by nanoparticles of polyhedral oligomeric silsesquioxanes can be changed into homogeneous alignment by the absorption of photoexcited azo-dye. An electrically tunabl…

Liquid Crystal Research AdvancementsOptical Coatings and GratingsSilicone and Siloxane Chemistry

Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals

Mingfeng Wang、Meng Zhang、Conrad Siegers 等 5 位作者2009-05-18Langmuir

We report the incorporation of various inorganic nanoparticles (NPs) (PbS, LaOF, LaF(3), and TiO(2), each capped by oleic acid, and CdSe/ZnS core/shell QDs capped by trioctylphosphine oxide) into vesicles (d = 70-150 nm) formed by a sample of poly(styrene-b-acrylic acid) (PS(404)-b-PAA(62), where the subscripts refer…

Quantum Dots Synthesis And PropertiesAdvanced Polymer Synthesis and CharacterizationPolymer Surface Interaction Studies

Evolution of ferromagneticlike order inFe2V1−xCrxAlHeusler alloys

Ritwik Saha、V. Srinivas、T. V. Chandrasekhar Rao2009-05-18Physical Review B

Structural, magnetic, and magnetotransport behaviors of ${\text{Fe}}_{2}{\text{V}}_{1\ensuremath{-}x}{\text{Cr}}_{x}\text{Al}$ Heusler-type alloys have been investigated in the present work. From the detailed analysis of data it is observed that increasing Cr content promotes site disorder of Fe and Al, which in turn…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsHeusler alloys: electronic and magnetic properties

Construction of Two Discrete Molecular High‐Nuclearity Copper(II) Complexes as Heterogeneous Catalysts for Oxidative Coupling Polymerisation of 2,6‐Dimethylphenol

Jie Wu、Hongwei Hou、Yuexin Guo 等 5 位作者2009-05-18European Journal of Inorganic Chemistry

Abstract Reaction of a rigid conjugated clamp‐like multi‐pyridineligand N , N ′‐bis(pyridin‐3‐yl)‐2,6‐pyridinedicarboxamide (H 2 L) with CuSO 4 · 5H 2 O or Cu(OAc) 2 resulted in the formation of two high‐nuclearity, discrete molecular copper(II) complexes, namely [Cu 10 (H 2 L) 5 (SO 4 ) 8 (μ 3 ‐OH) 4 (H 2 O) 2 ] · 4C…

Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms

The influence of tin and silver as microstructure modifiers on the corrosion rate of Pb–Ca alloys in sulfuric acid solutions

Milan Čekerevac、Endre Romhanji、Z. Cvijović 等 4 位作者2009-05-18Materials and Corrosion

Abstract The effect of microstructure modifiers, Sn and Ag, on the corrosion rate of commercial Pb–Ca alloy in H 2 SO 4 electrolyte was investigated by the potentiodynamic polarization and by the weight loss corrosion rate measurement at the open circuit potential. The effect of microstructure modification of the Pb–C…

Corrosion Behavior and InhibitionAdvanced Thermoelectric Materials and DevicesThermodynamic and Structural Properties of Metals and Alloys