Xiaofei Yuan、Atsushi Harada、Yuichi Yamasaki 等 4 位作者2005-02-12Langmuir
To improve the stability of lysozyme-incorporated polyion complex (PIC) micelles in physiological condition, three types of hydrophobic groups, including phenyl (Phe), naphthyl (Nap), and pyrenyl (Py) terminal groups, were separately introduced to the omega-end of poly(ethylene glycol)-poly(alpha,beta-aspartic acid) b…
Nanoparticle-Based Drug DeliverySurfactants and Colloidal SystemsAdvanced Drug Delivery Systems
Jun Hu、Yubiao Liu2005-02-12Langmuir
Examination of the catalysts recovered in the N,N-dihexylcarbodiimide-palladium nanoparticle composite catalyzed Suzuki cross-coupling reactions revealed that the metal nanoparticles transformed gradually from spherical-shape to larger needle-shaped crystals. Two types of Ostwald ripening processes were observed. One…
Quantum Dots Synthesis And PropertiesNanocluster Synthesis and ApplicationsNanomaterials for catalytic reactions
Satoshi Koizumi、Masayuki Nihei、Motohiro Nakano 等 4 位作者2005-02-12Inorganic Chemistry
Reactions of a quadridentate ligand [N-(2-hydroxy-5-nitrobenzyl)iminodiethanol] with iron and manganese chloride in methanol yielded an antiferromagnetic FeIII6 ring and a single-molecule magnet MnII3MnIII4 wheel, respectively.
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Ananta K. Ghosh、Debajyoti Ghoshal、Ennio Zangrando 等 5 位作者2005-02-12Inorganic Chemistry
Two new polymeric azido-bridged manganese complexes of formulas [Mn(N3)2 (bpee)]n (1) and {[Mn(N3)(dpyo)Cl(H2O)2](H2O)}n (2) [bpee, trans-1,2-bis(4-pyridyl)ethylene; dpyo, 4,4'-dipyridyl N,N'-dioxide] have been synthesized and characterized by single-crystal X-ray diffraction analysis and low-temperature magnetic stud…
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
YuHuang Wang、Myung Jong Kim、Hongwei Shan 等 10 位作者2005-02-12Nano Letters
We demonstrate the continued growth of single-walled carbon nanotubes (SWNTs) from ordered arrays of open-ended SWNTs in a way analogous to epitaxy. Nanometer-sized metal catalysts were docked to the SWNT open ends and subsequently activated to restart growth. SWNTs thus grown inherit the diameters and chirality from…
Carbon Nanotubes in CompositesGraphene research and applicationsMolecular Junctions and Nanostructures
Jean Pierre Costes、Jean François Lamère、Christine Lepetit 等 6 位作者2005-02-12Inorganic Chemistry
An H2L Schiff-base ligand that was obtained from the monocondensation of diaminomaleonitrile and 4-(diethylamino)salicylaldehyde is reported together with four related nickel(II) complexes formulated as [Ni(L)(L')] (L' = MePhCHNH2, iPrNH2, Py, and PPh3). Crystal structures have been solved for H2L, [Ni(L)(MePhCHNH2)],…
Metal complexes synthesis and propertiesMagnetism in coordination complexesNonlinear Optical Materials Research
Andreas Aemissegger、Vincent Kräutler、Wilfred F. van Gunsteren 等 4 位作者2005-02-12Journal of the American Chemical Society
A photochromic azobenzene linker was incorporated as a turn element into an amino acid sequence known to fold into a beta-hairpin structure in aqueous solution. Oligomer formation when the linker was in its thermodynamically favored trans form prohibited structure determination. Light-induced conformational change of…
Chemical Synthesis and AnalysisClick Chemistry and ApplicationsPhotochromic and Fluorescence Chemistry
Hansong Cheng、Alan C. Cooper、Guido P. Pez 等 6 位作者2005-02-12The Journal of Physical Chemistry B
We present systematic molecular dynamics simulation studies of hydrogen storage in single walled carbon nanotubes of various diameters and chiralities using a recently developed curvature-dependent force field. Our main objective is to address the following fundamental issues: 1. For a given H2 loading and nanotube ty…
Carbon Nanotubes in CompositesHydrogen Storage and MaterialsChemical and Physical Properties of Materials
Srinivas Siripurapu、Joseph M. DeSimone、Saad A. Khan 等 4 位作者2005-02-12Macromolecules
Synergistic use of surface barriers and nanoscale additives is investigated as alternate means by which to promote bubble nucleation in, and thus improve the porosity of, poly(methyl methacrylate) (PMMA) thin films ( i ) constrained between impenetrable plates, ( ii ) modified with either nanosilica particles, commerc…
Phase Equilibria and ThermodynamicsCarbon dioxide utilization in catalysisPolymer Foaming and Composites
Soma Chattopadhyay、Deniz Erdemir、James M. B. Evans 等 7 位作者2005-02-12Crystal Growth & Design
Nucleation of crystalline solids, the first stage of crystallization from solution, is not yet fully understood. This is true for both small molecules of low molecular weight and more complicated large molecules. To obtain direct structural information about the process of nucleation and crystallization of small molec…
Enzyme Structure and FunctionSpectroscopy and Quantum Chemical StudiesCrystallization and Solubility Studies
Q. Li、S. J. Xu、M. H. Xie 等 4 位作者2005-02-12arXiv
The ``S-shape'' (decrease-increase-decrease) temperature dependence of luminescence peak shift from semiconductors is considered. A luminescence model for localized state ensemble was employed to interpret this anomalous temperature dependence of emission peak. Excellent agreement between the theoretical calculation a…
Materials Science
J. M. Deutsch、Trieu Mai2005-02-12arXiv
Magnetic thin films exhibit a strong variation in properties depending on their degree of disorder. Recent coherent x-ray speckle experiments on magnetic films have measured the loss of correlation between configurations at opposite fields and at the same field, upon repeated field cycling. We perform finite temperatu…
Materials Sciencecond-mat.other
Pooja Shah、Thomas M. Truskett2005-02-12arXiv
We use molecular simulations to explore how sample dimensions and interfacial properties impact some generic aspects of the mechanical and structural behavior of nanoconfined materials. Specifically, we calculate the strain-dependent properties of minimum-energy thin-film particle configurations (i.e., inherent struct…
Materials Sciencecond-mat.stat-mech
Bailing Liu、Algy Kazlauciunas、James T. Guthrie 等 4 位作者2005-02-12Macromolecules
Reversible addition fragmentation chain transfer (RAFT) polymerization was used for the first time to produce poly(methyl methacrylate) hyperbranched polymers via the one-pot copolymerization of methyl methacrylate (MMA) and ethylene glycol dimethacrylate, mediated by 2-(2-cyanopropyl) dithiobenzoate. Hyperbranched st…
Polymer Surface Interaction StudiesPesticide and Herbicide Environmental StudiesDendrimers and Hyperbranched Polymers
De‐Quan Yang、Jean-Francois Rochette、E. Sacher2005-02-12OpenAlex
The interaction between multiwalled carbon nanotubes (MWCNTs) and aqueous poly(diallyl dimethylammonium) chloride (PDDA) was studied by X-ray photoelectron (XPS) and photoacoustic Fourier transform infrared (PA-FTIR) spectroscopies. We have found that the mild sonication of MWCNTs in aqueous PDDA results in a signific…
Carbon Nanotubes in CompositesConducting polymers and applicationsElectrochemical Analysis and Applications
John J. Vajo、Sky L. Skeith、Florian Mertens2005-02-12OpenAlex
Destabilization of LiBH4 for reversible hydrogen storage has been studied using MgH2 as a destabilizing additive. Mechanically milled mixtures of LiBH4 + (1/2)MgH2 or LiH + (1/2)MgB2 including 2-3 mol % TiCl3 are shown to reversibly store 8-10 wt % hydrogen. Variation of the equilibrium pressure obtained from isotherm…
Hydrogen Storage and MaterialsHybrid Renewable Energy SystemsSuperconductivity in MgB2 and Alloys
Zhiqi Shen、Yi‐Bing Cheng、George P. Simon2005-02-11Macromolecules
Both poly(ethylene oxide) (PEO) and poly(methyl methacrylate) (PMMA) were melt intercalated in a sequential or simultaneous (blend) manner into two layered silicates, a sodium montmorillonite (MMT) and an organically modified bentonite (B34). The B34 nanoclay, which was already pre-intercalated to the point of saturat…
Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesPolymer Nanocomposite Synthesis and Irradiation
Guillaume Rogez、Jean‐Noël Rebilly、Anne‐Laure Barra 等 12 位作者2005-02-11Angewandte Chemie
Die Spin-Hamilton-Parameter in einem isolierten oktaedrischen NiII-Komplex (siehe Struktur) wurden durch eine Kombination unterschiedlicher Techniken (Magnetisierung, HF-HFEPR, FDMRS) mit Angular-Overlap-Modell-Rechnungen präzise bestimmt. Dieser Komplex weist die bisher höchste Anisotropie der magnetisch leichten Ach…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Kenji Yamada、Toshihiro Onizuka、Kazuhiko Endo 等 5 位作者2005-02-11Journal of Oral Rehabilitation
The present study examines the influence of a goldbonder and pre-heat treatment of the titanium on the adhesion of porcelain. Three groups of titanium substrates were given various heat treatments, namely; none, 200 degrees and 600 degrees C, respectively before applying goldbonder. The surfaces of the titanium specim…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsTitanium Alloys Microstructure and Properties
H. Palancher、J.-L. Hodeau、Christophe Pichon 等 7 位作者2005-02-11Angewandte Chemie International Edition
Spot on! Resonant scattering enables accurate localization of the individual cations in powders by the routine use of “anomalous differential patterns” and “dispersive difference maps” (see picture), as demonstrated for (Sr,Rb) zeolite X, a sample of potential industrial interest.
Crystal Structures and PropertiesAdvanced NMR Techniques and ApplicationsX-ray Diffraction in Crystallography