Markus Glöckle、K. Hübler、Hans-Jürgen Kümmerer 等 5 位作者2001-04-06Inorganic Chemistry
The complexes [(mu-bmtz(*-))[Cu(PPh(3))(2)](2)](BF(4)) (1) and [(mu-H(2)bmtz)[Cu(PPh(3))(2)](2)](BF(4))(2) (2) (bmtz = 3,6-bis(2'-pyrimidyl)-1,2,4,5-tetrazine and H(2)bmtz = 1,4-dihydro-3,6-bis(2'-pyrimidyl)-1,2,4,5-tetrazine) were obtained as stable materials that could be crystallized for structure determination. 1.…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
V. de Zea Bermudez、Rute A. S. Ferreira、Luís D. Carlos 等 6 位作者2001-04-06The Journal of Physical Chemistry B
Infrared and photoluminescence spectroscopies have been used to investigate the local environment of the Eu 3+ ions in luminescent sol−gel derived materials di-ureasils based on a hybrid framework represented by U(600). This host is composed of a siliceous backbone grafted, through urea cross-links, to both ends of po…
Metal-Organic Frameworks: Synthesis and ApplicationsLanthanide and Transition Metal ComplexesPolyoxometalates: Synthesis and Applications
Alan K. Wertsching、Andrew S. Koch、Stephen G. DiMagno2001-04-06Journal of the American Chemical Society
In the first part of this paper, the syntheses, structural characterization, molecular modeling, and electronic spectra for planar and nonplanar perfluoroalkylated porphyrins, (R(f))(4)P's, are reported. These studies demonstrate that the intrinsic substituent effect of the perfluoroalkyl group on the long-wavelength…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesHeme Oxygenase-1 and Carbon Monoxide
Yong Liu2001-04-06Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Detwinning in crystalline solids is a unique deformation mechanism partially responsible for the shape memory effect in addition to phase transformation. Owing to an insignificant dislocation process during detwinning leading to inelastic deformation, the residual strain can be recovered through a reverse transformati…
Rare-earth and actinide compoundsShape Memory Alloy TransformationsTitanium Alloys Microstructure and Properties
Wada, Masahisa2001-04-06Macromolecules
An oriented, crystalline film of cellulose I was transformed into cellulose III I by supercritical ammonia treatment. These oriented, crystalline cellulose III I films were converted into cellulose I β crystalline film by heating in air for 1 h at 230 °C. This transformation process, from cellulose III I to I β, was s…
Biofuel production and bioconversionAdvanced Cellulose Research StudiesLignin and Wood Chemistry
Céline Eypert-Blaison、Emmanuel Sauzéat、M. Pelletier 等 6 位作者2001-04-06Chemistry of Materials
The hydration behavior of synthetic Na-magadiite was studied by combining thermal analyses, water adsorption gravimetry, X-ray diffraction, and infrared spectroscopy under controlled water pressure. Thermal analyses reveal, at least, two distinct water populations. The water adsorption isotherm exhibits two steps at l…
Glass properties and applicationsSoil and Unsaturated FlowClay minerals and soil interactions
Choongyong Kwag、Charles W. Manke、Esin Gulari2001-04-06Industrial & Engineering Chemistry Research
The free volume theory of Gerhardt et al. 1 ( J. Polym. Sci. B: Polym. Phys. 1998, 36, 1911) is used to predict viscoelastic scaling factors describing the effect of dissolved gas content on the viscosity curves of polystyrene melts swollen with dissolved carbon dioxide and dissolved 1,1-difluoroethane. The prediction…
Polymer crystallization and propertiesPhase Equilibria and ThermodynamicsPolymer Foaming and Composites
Gy. Tolnai、Ferenc Csempesz、M. Kabai-Faix 等 8 位作者2001-04-06Langmuir
Stöber silica particles having diameters of ca. 100 and ca. 200 nm were prepared and silylated using trimethylsilyl N, N -dimethylcarbamate, achieving a range of surface coverage by trimethylsilyl groups by varying the amounts of silylating agent used. The efficacy of silylation was characterized in terms of hydrophob…
Mesoporous Materials and CatalysisMinerals Flotation and Separation TechniquesIron oxide chemistry and applications
J. M. Recio、R. Franco、Ángel Martín Pendás 等 6 位作者2001-04-06Physical review. B, Condensed matter
Simple algebraic equations show that the bulk compressibility in spinel-type compounds can be expressed by means of cation oxide polyhedral compressibilities and a term that accounts for the pressure effect on the internal oxygen position in the unit cell. The equations explain (i) the difference of compressibilities…
Ferroelectric and Piezoelectric MaterialsAdvanced Condensed Matter PhysicsMicrowave Dielectric Ceramics Synthesis
S. Ravichandran、Jeffry D. Madura、J. Talbot2001-04-06The Journal of Physical Chemistry B
We investigate the initial stages of hen egg-white lysozyme (HEWL) adsorption at a charged solid interface using Brownian Dynamics simulation. The protein is modeled at the atomistic level and the adsorption surface is represented by a planar array of positively charged sites. Adsorption reactions are simulated at neu…
Proteins in Food SystemsPolymer Surface Interaction StudiesProtein purification and stability
Tobias Kerle、Zhiqun Lin、Ho‐Cheol Kim 等 4 位作者2001-04-06Macromolecules
In general, the relaxation of polymers from a nonequilibrium state will occur only if the polymer is above the bulk glass temperature. To examine the influence of a free surface on the mobility of polymer chains, the free surface of thick, artificially roughened polystyrene (PS) films (>10 μm) was studied. Each surfac…
Phase Equilibria and ThermodynamicsMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies
A. Muñóz、J. A. Alonso、M. J. Martínez‐Lope 等 6 位作者2001-04-06Chemistry of Materials
Hexagonal, nonperovskite HoMnO 3 oxide, containing a triangular arrangement of Mn 3+ cations, has been prepared in polycrystalline form by the thermal decomposition of metal citrates. The crystal structure has been refined from neutron powder diffraction data. Magnetic and specific-heat measurements anticipate a compl…
Magnetic and transport properties of perovskites and related materialsMultiferroics and related materialsAdvanced Condensed Matter Physics
K. Liu、Phaedon Avouris、Richard Martel 等 4 位作者2001-04-06Physical review. B, Condensed matter
The effects of doping, electron coherence, and electron correlation on the transport properties of boron-doped multiwalled carbon nanotubes are studied. Substitutional boron lowers the Fermi level of the tubes and increases the number of participating conduction channels without introducing strong carrier scattering.…
Carbon Nanotubes in CompositesGraphene research and applicationsThermal properties of materials
D. P. Young、P. W. Adams、J. Y. Chan 等 4 位作者2001-04-06arXiv
We present the crystal structure and low temperature electronic transport properties of the intermetallic commonly known as BeB_2. In contrast to the much simpler AlB_2-type structure of the 39K superconductor MgB_2, BeB_2 forms a complex structure type that is nearly unique in nature. The structure has 110.5 atoms pe…
Materials ScienceSuperconductivity
Qiang Wang、Paul F. Nealey、Juan Pablo2001-04-06Macromolecules
We report the first Monte Carlo simulations of the morphology of asymmetric diblock copolymer thin films confined between two homogeneous and identical surfaces. The copolymers form a cylindrical morphology in the bulk. Exploratory bulk simulations have been conducted with judicious choices of the simulation box dimen…
Theoretical and Computational PhysicsBlock Copolymer Self-AssemblyFluid Dynamics and Thin Films
Eytan Katzav、Moshe Schwartz2001-04-06arXiv
The controversy whether or not he Kardar-Parisi-Zhang (KPZ) equation has an upper critical dimension (UCD) is going on for quite a long time. Some approximate integral equations for the two-point function served as an indication for the existence of a UCD, by obtaining a dimension, above which the equation does not ha…
Materials Sciencecond-mat.stat-mech
C. Ramesh、E. Bhoje Gowd2001-04-06Macromolecules
The crystallization of nylon-6 from the melt was monitored in situ by X-ray diffraction. The nylon-6 was found to crystallize into a high-temperature α‘-phase as indicated by the two-peak nature of the diffractogram. On cooling from the crystallization temperature to room temperature, nylon-6 retained the two-peak nat…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesFiber-reinforced polymer composites
Oliver Schmelz、Alf Mews、Thomas Basché 等 5 位作者2001-04-06Langmuir
Heterosupramolecular structures from CdSe or CdSe/ZnS core/shell nanocrystals and a specially designed organic fluorophore (diazaperylene) have been prepared to investigate the electronic interactions at nanoscopic semiconductor surfaces. To determine the average number of dye molecules per nanocrystal, we monitored t…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanocluster Synthesis and Applications
Yongge Wei、Bubin Xu、Charles L. Barnes 等 4 位作者2001-04-06Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTAn Efficient and Convenient Reaction Protocol to Organoimido Derivatives of PolyoxometalatesYongge Wei, Bubin Xu, Charles L. Barnes, and Zhonghua PengView Author Information Department of Chemistry, University of Missouri-Kansas City Kansas City, Missouri 64110 Departm…
Polyoxometalates: Synthesis and ApplicationsChemical Synthesis and ReactionsSulfur-Based Synthesis Techniques
R. Erik Holmlin、Xiaoxi Chen、Robert Chapman 等 5 位作者2001-04-06OpenAlex
This paper describes the use of surface plasmon resonance spectroscopy and self-assembled monolayers (SAMs) of alkanethiols on gold to evaluate the ability of surfaces terminating in different combinations of charged groups to resist the nonspecific adsorption of proteins from aqueous buffer. Mixed SAMs formed from a…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresAdvanced Biosensing Techniques and Applications