Carole Duboc、T. Phoeung、Samir Zein 等 6 位作者2007-05-18Inorganic Chemistry
The synthesis, structural characterization, and electronic properties of a new series of high-spin six-coordinate dihalide mononuclear MnII complexes [Mn(tpa)X2] (tpa=tris-2-picolylamine; X=I (1), Br (2), and Cl (3)) are reported. The analysis of the crystallographic data shows that in all investigated complexes the m…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesInorganic Chemistry and Materials
Dong‐Ren Bai、Xiang‐Yang Liu、Suning Wang2007-05-18Chemistry - A European Journal
New V-shaped bifunctional organosilicon compounds that contain an electron acceptor, B(Mes)2, and an electron donor, N(1-naph)Ph, with the formulae Ph2Si{p-C6H4B(Mes)2}{p-C6H4N(1-naph)ph)} (1), Ph2Si{p-C6H4(Mes)2}{p-biphenyl-N(1-naph)ph} (2), and Si{p-C6H4B(Mes)2}2{p-C6H4N(1-naph)ph)}2 (3) have been synthesized as mod…
Conducting polymers and applicationsLuminescence and Fluorescent MaterialsOrganoboron and organosilicon chemistry
Susana R. Sousa、M. Manuela Brás、Pedro Moradas‐Ferreira 等 4 位作者2007-05-18Langmuir
In the present work we analyze the dynamics of fibronectin (FN) adsorption on two different stable titanium oxides, with varied surface roughness, and chemically similar to those used in clinical practice. The two types of titanium oxide surfaces used were TiO2 sputtered on Si (TiO2 sp) and TiO2 formed on commercially…
Cell Adhesion Molecules ResearchPolymer Surface Interaction StudiesForce Microscopy Techniques and Applications
Jack Deslippe、Catalin D. Spataru、David Prendergast 等 4 位作者2007-05-18Nano Letters
We extend previous ab initio calculations on excitonic effects in metallic single-walled carbon nanotubes to more experimentally realizable larger diameter tubes. Our calculations predict bound exciton states in both the (10,10) and (12,0) tubes with binding energies of approximately 50 meV providing experimentally ve…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications
Jung Inn Sohn、Heung Jin Joo、Alexandra E. Porter 等 7 位作者2007-05-18Nano Letters
We have grown epitaxially orientation-controlled monoclinic VO2 nanowires without employing catalysts by a vapor-phase transport process. Electron microscopy results reveal that single crystalline VO2 nanowires having a [100] growth direction grow laterally on the basal c plane and out of the basal r and a planes of s…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsTransition Metal Oxide Nanomaterials
Feng Zhou、Jeannine R. Szczech、Michael T. Pettes 等 6 位作者2007-05-18Nano Letters
The Seebeck coefficient, electrical conductivity, and thermal conductivity of individual chromium disilicide nanowires were characterized using a suspended microdevice and correlated with the crystal structure and growth direction obtained by transmission electron microscopy on the same nanowires. The obtained thermoe…
Advanced Thermoelectric Materials and DevicesNanowire Synthesis and ApplicationsSemiconductor materials and interfaces
Seunghun Kang、Baoshan Xing2007-05-18Langmuir
The adsorption of dicarboxylic acids by kaolinite and montmorillonite at different pH conditions was investigated using in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) and ex situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. The sorption capacity of montmorillonite wa…
Adsorption and biosorption for pollutant removalGroundwater and Isotope GeochemistryClay minerals and soil interactions
Qingbo Zhang、Jim Yang Lee、Jun Yang 等 5 位作者2007-05-18Nanotechnology
Ag–Au alloy nanoparticles with tunable size and composition were prepared by a replacement reaction between Ag nanoparticles and HAuCl 4 at elevated temperatures. The formation of homogeneous alloy nanoparticles was confirmed by selected-area energy-dispersive x-ray spectroscopy (SAEDX), UV–visible absorption spectros…
Gold and Silver Nanoparticles Synthesis and ApplicationsCopper-based nanomaterials and applicationsnanoparticles nucleation surface interactions
M. Matsukawa、Y. Yamato、T. Kumagai 等 5 位作者2007-05-18arXiv
We report a steplike lattice transformation of single crystalline (La$_{0.4}$Pr$_{0.6}$)$_{1.2}$Sr$_{1.8}$Mn$_{2}$O$_{7}$bilayered manganite accompanied by both magnetization and magnetoresistive jumps, and examine the ultrasharp nature of the field-induced first-order transition from a paramagnetic insulator to a fer…
Materials ScienceStrongly Correlated Electrons
Maria Manoli、R.D.L. Johnstone、Simon Parsons 等 7 位作者2007-05-18Angewandte Chemie International Edition
Fridge magnet: A decametallic mixed-valent Mn supertetrahedron (see picture; M purple, O red, N blue, Br brown, C gray) displays dominant ferromagnetic exchange and a spin ground state of S=22. The magnetic behavior of the cluster makes it suitable for use as a low-temperature magnetic refrigerant.
Advanced Chemical Physics StudiesMagnetism in coordination complexesOrganic and Molecular Conductors Research
Trisha L. Andrew、Timothy M. Swager2007-05-18Journal of the American Chemical Society
A fluorescent chemosensor to detect saturated nitramine and nitrate ester explosives was devised based on a photochemical reduction reaction. 10-Methyl-9,10-dihydroacridine (AcrH 2 ) was found to transfer a hydride ion equivalent to the high explosives RDX and PETN upon irradiation at 313 nm in degassed acetonitrile s…
Molecular Sensors and Ion DetectionMass Spectrometry Techniques and ApplicationsLuminescence and Fluorescent Materials
Masanobu Izaki、Tsutomu Shinagawa、Kotaro Mizuno 等 6 位作者2007-05-18OpenAlex
Polycrystalline n-ZnO/p-Cu2O heterojunctions have been fabricated by low-temperature eletrodepositions of ZnO and Cu2O layers in aqueous solutions. The condition for forming the Cu2O layer significantly reflected the electrical rectification characteristic and the photovoltaic performance, and the heterojunction fabri…
ZnO doping and propertiesCopper-based nanomaterials and applicationsElectronic and Structural Properties of Oxides
Shuichi Kimata、Takashi Sakurai、Yoshinobu Nozue 等 8 位作者2007-05-18OpenAlex
In the rich and long-standing literature on the flow-induced formation of oriented precursors to polymer crystallization, it is often asserted that the longest, most extended chains are the dominant molecular species in the "shish" of the "shish-kebab" formation. We performed a critical examination of this widely held…
Polymer crystallization and propertiesRheology and Fluid Dynamics StudiesInnovative Microfluidic and Catalytic Techniques Innovation
Haowen Li、Guilin Mao、Kenneth D. Singer 等 6 位作者2007-05-17Journal of the Optical Society of America B
To understand the electronic mechanisms for the electric-field sensitive second-harmonic response of di-8-4-(2-[6-(dioctylamino)-2-naphthalenyl]ethneyl)-1-(3-sulfopropyl) pryridinium inner salt in biological membranes, we have measured its nonlinear optical hyperpolarizability using a combination of hyper-Rayleigh sca…
Nonlinear Optical Materials ResearchSpectroscopy and Quantum Chemical StudiesNonlinear Optical Materials Studies
Ricardo O. Freire、Gerd B. Rocha、Alfredo M. Simas2007-05-17Chemical Physics Letters
The Sparkle/PM3 model is extended to praseodymium(III), and ytterbium(III) complexes. The same two sets of 15 complexes used to parameterize Sparkle/AM1, were used as training sets. The validation procedure included additional high quality crystallographic structures for a total of 48 structures of Pr(III) complexes,…
Metal complexes synthesis and propertiesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
Nivan B. da Costa、Ricardo O. Freire、Alfredo M. Simas 等 4 位作者2007-05-17The Journal of Physical Chemistry A
The recently defined Sparkle model for the quantum chemical prediction of geometries of lanthanum(III) and lutetium(III) complexes within AM1 (J. Phys. Chem. A 2006, 110, 5897) has been extended to PM3. As training sets, we used the same two groups, one for each lanthanide, of 15 high-crystallographic-quality (R facto…
Metal complexes synthesis and propertiesRadioactive element chemistry and processingLanthanide and Transition Metal Complexes
Hikmet Sezen、Gülay Ertaş、Aykutlu Dâna 等 4 位作者2007-05-17Macromolecules
Polystyrene / polymethyl methacrylate (PS-PMMA) thin films were analyzed for detecting phase separation as well as probing their electrical responses by XPS. It was also shown that electrical parameters like resistance or capacitance can also be extracted using dynamical XPS measurements. A Kratos ES300 electron spect…
Corrosion Behavior and InhibitionForce Microscopy Techniques and ApplicationsElectron and X-Ray Spectroscopy Techniques
Yung-Hsin Lin、Nai‐Kuan Chou、Kuan‐Fu Chen 等 8 位作者2007-05-17Polymer International
Abstract Polyurethanes (PUs) were prepared from 4,4′‐diphenylmethane diisocyanate and various molecular weights of poly(tetramethylene glycol) and polydimethylsiloxane. The physical properties of these polymers were determined using Fourier transform infrared spectroscopy and through calculation of their swelling rati…
Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesPolymer composites and self-healing
P.J. von Ranke、N.A. de Oliveira、D. C. Garcia 等 8 位作者2007-05-17Physical Review B
We report a way of obtaining the magnetocaloric effect due to the crystal electrical-field quenching of the total angular momentum in a magnetic system where a strong spin reorientation is present. The theoretical model is applied to $\mathrm{Dy}{\mathrm{Al}}_{2}$ and the results predict a considerable magnetic entrop…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsInorganic Chemistry and Materials
Eita Funami、Kentaro Taki、Masahiro Ohshima2007-05-17Journal of Applied Polymer Science
Abstract The densities of two polymer/CO 2 single‐phase solutions, poly(ethylene glycol) (PEG)/CO 2 and polyethylene (PE)/CO 2 , were measured at temperatures higher than melting temperature of the polymer under CO 2 pressures in the range 0–15 MPa using a newly‐proposed gravimetric method. A magnetic suspension balan…
Polymer crystallization and propertiesPhase Equilibria and ThermodynamicsPolymer Foaming and Composites