Dominique Luneau、Christophe Stroh、Joan Cano 等 4 位作者2004-12-29Inorganic Chemistry
The synthesis, crystal structure, and magnetic properties of a one-dimensional compound, {[Mn(hfac)2]2(biradical)}n (1), resulting from the coordination of bis(hexafluoroacethylacetonato)manganese(II) [Mn(hfac)2] with a biradical obtained by grafting two nitronyl nitroxide radicals in the 5 and 5' positions of a 2,2'-…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Dana Yaron-Marcovich、Yona Chen、Shlomo Nir 等 4 位作者2004-12-29Environmental Science & Technology
Engineering of clay nanocomposite materials by modification of their surfaces can enable the control of retention, transport, and persistence of toxic chemicals in the geosystem. The properties and interactions of clay nanocomposites have been widely studied, but little information exists on their microstructure at a…
Clay minerals and soil interactionsIron oxide chemistry and applicationsLayered Double Hydroxides Synthesis and Applications
Konstantinos Mpoukouvalas、George Floudas、S. H. Zhang 等 4 位作者2004-12-29Macromolecules
The dynamic miscibility of poly(4-vinylphenol)/poly(vinyl ethyl ether) (PVPh/PVEE) blends, with a T g contrast of 186 K, as well as the PVEE segmental dynamics have been investigated by temperature- and pressure-dependent dielectric spectroscopy. In PVEE the pressure coefficient of T g amounts to 0.215 K/MPa, and its…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesRheology and Fluid Dynamics Studies
K.P. Homewood、M. A. Lourenço2004-12-29Materials Today
We give a brief overview of the development and recent progress of a new technology, silicon dislocation-engineered light-emitting diodes (LEDs). The dislocation-engineering method enables the development of light emitters in conventional silicon technology. Key and probably unique to this approach is its genuine and…
Thin-Film Transistor TechnologiesSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
Woo‐Dong Jang、Nobuhiro Nishiyama、Guodong Zhang 等 11 位作者2004-12-29Angewandte Chemie
Photocytotoxisch und stabil ist das polymere Micellensystem, das in wässrigem Medium durch elektrostatische Assoziation aus einem anionischen dendrimeren Porphyrin und einem Polyethylenglycol-Poly(L-lysin)-Blockcopolymer entsteht (siehe Bild). Wegen seiner hydrodynamischen Größe (ca. 60 nm) sollte sich dieses polymere…
Nanoplatforms for cancer theranosticsLuminescence and Fluorescent MaterialsDendrimers and Hyperbranched Polymers
Benjamin J. Wiley、Yugang Sun、Brian T. Mayers 等 4 位作者2004-12-29Chemistry - A European Journal
From silver nanocubes to nanotubes through nanospheres, nanotriangles, and nanowires. All these morphologies, as depicted in the TEM and SEM images in the cover picture, have been achieved by means of shape‐controlled synthesis. The polymer‐mediated polyol process is also depicted; through careful control of certain e…
Dendrimers and Hyperbranched PolymersDiatoms and Algae ResearchAnodic Oxide Films and Nanostructures
Lidia Armelao、Davide Barreca、Gregorio Bottaro 等 6 位作者2004-12-29Chemistry of Materials
Lanthanum cobaltite (LaCoO 3 ) thin films were synthesized by an innovative route based on the combination of chemical vapor deposition (CVD) and sol−gel (SG) methods. In particular, the approach is based on the sequential deposition of binary oxide systems (Co−O on La−O) and on the ex situ thermal treatment of the fi…
Catalytic Processes in Materials ScienceMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Alessia Bacchi、E. Bosetti、Mauro Carcelli 等 6 位作者2004-12-29Inorganic Chemistry
A family of organic-inorganic wheel-and-axle diols (Pd(LOH)(2)Cl(2), Pd(LOH)(2)(CH(3))Cl, Pd(LOH)(2)(CH(3)COO)(2), LOH = alpha-(4-pyridyl)benzhydrol) and several corresponding solvates are synthesized and characterized by single-crystal X-ray diffraction analysis. Their structures are compared to investigate the facto…
Metal-Organic Frameworks: Synthesis and ApplicationsCrystal structures of chemical compoundsLanthanide and Transition Metal Complexes
Rizwan Hussain、Din Mohammad2004-12-29DergiPark (Istanbul University)
Poly (methyl methacrylate) -- PMMA -- and poly (methacryloyl chloride) -- PMACl -- were synthesized by free radical solution polymerization. The thermal stabilities of these polymers were determined with the help of thermogravimetry and differential thermal analysis. The structural changes in these materials at differ…
Synthesis and properties of polymersThermal and Kinetic AnalysisChemical Thermodynamics and Molecular Structure
Subhananda Chakrabarti、M. Holub、P. Bhattacharya 等 7 位作者2004-12-29Nano Letters
We have fabricated and characterized surface-emitting, spin-polarized light-emitting diodes with a Mn-doped InAs dilute magnetic quantum dot spin-injector and contact region grown by low-temperature molecular beam epitaxy, and an In(0.4)Ga(0.6)As quantum dot active region. Energy-dispersive X-ray and electron energy l…
Physics of Superconductivity and MagnetismZnO doping and propertiesElectronic and Structural Properties of Oxides
Toshihiro Kuzuya、Yutaka Tai、Saeki Yamamuro 等 4 位作者2004-12-29Science and Technology of Advanced Materials
In this paper report on the synthesis of copper and zinc sulfide nanocrystals (NCs) via the formation of polymetallic thiolate cages. Cu2S NCs derived from Cu–dodecanethiol complex formed well-defined spherers, which were sufficiently monodisperse (with a size distribution of ∼10% standard deviation of approximately 4…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanocluster Synthesis and Applications
Ming Liu、K. Jimmy Hsia、M. R. Sardela2004-12-29Journal of the American Ceramic Society
In situ X‐ray experiments were conducted to examine the electric‐field‐induced phase changes in PZT‐5H materials. The X‐ray diffraction profiles at different electric‐field levels were analyzed by peak fitting and were used to identify the occurrence of non‐180° domain switching and phase transition. We found that in…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Bernard P. Binks、Jhonny A. Rodrigues2004-12-29Angewandte Chemie
Der Mix macht's: Die Oberflächenladung von carboxyfunktionalisierten Latexnanopartikeln kann so eingestellt werden, dass hoch stabile Öl-in-Wasser- und Wasser-in-Öl-Emulsionen entstehen. Eine Veränderung des pH-Werts (siehe Bild) oder der Salzkonzentration führt zur Inversion der Emulsionen.
Proteins in Food SystemsSurfactants and Colloidal SystemsPickering emulsions and particle stabilization
Christoph A. Schalley、Carla Verhaelen、Frank‐Gerrit Klärner 等 5 位作者2004-12-29Angewandte Chemie International Edition
Size does matter: Viologen dications (blue) substituted with dendrons form strong host–guest complexes with molecular tweezers (yellow) in solution and in the gas phase (see picture). Complexation even stabilizes dications which are intrinsically unstable as “naked” species in the high vacuum of a mass spectrometer. A…
Mass Spectrometry Techniques and ApplicationsChemical Synthesis and AnalysisDendrimers and Hyperbranched Polymers
Youngjong Kang、T. Andrew Taton2004-12-29Angewandte Chemie
Beschichtetes Gold: Kern/Schale-Nanostrukturen entstehen spontan, wenn Goldnanopartikel mit amphiphilen Blockcopolymeren kombiniert werden. Die Polymervernetzung fixiert dann die Nanostruktur topologisch (siehe Bild). Die Dicke der Polymerschale sowie die optischen und chemischen Eigenschaften der gesamten Nanostruktu…
Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Polymer Synthesis and Characterization
Milan Kanti Naskar、Minati Chatterjee2004-12-29Journal of the American Ceramic Society
Magnesium aluminate (MgAl 2 O 4 ) spinel powders of irregular and spherical morphologies were obtained from the bi‐component water‐based sols following the sol–gel and sol–emulsion–gel methods, respectively. For the synthesis of the oxide microspheres, the surfactant concentration and viscosity of the sols were found…
Ferroelectric and Piezoelectric MaterialsLayered Double Hydroxides Synthesis and ApplicationsMicrowave Dielectric Ceramics Synthesis
Cordt Zollfrank、H. Sieber2004-12-29Journal of the American Ceramic Society
Liquid Si infiltration (LSI) of beech wood‐derived biocarbon (C B ) templates at 1550°C yields biomorphous SiSiC ceramics with the morphology of the initial biological preform. The biomorphous SiSiC ceramic consists of solidified Si in the cell lumina, polycrystalline β‐SiC and residual carbon islands located at the p…
Advanced ceramic materials synthesisAdvanced Cellulose Research StudiesAluminum Alloys Composites Properties
Ying Wang、Zhiyong Tang、Susheng Tan 等 4 位作者2004-12-29Nano Letters
CdTe nanowires made by self-organization of CdTe nanoparticles in aqueous media were separately conjugated with complementary biological connectors, such as antigen-antibody and biotin-streptavidin. Transmission electron microscopy images and Forster resonance energy transfer measurements in nanowire superstructures w…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications
Yu Chen、Zhong Shen、Lourdes Pastor‐Pérez 等 5 位作者2004-12-29Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTRole of Topology and Amphiphilicity for Guest Encapsulation in Functionalized Hyperbranched Poly(ethylenimine)sYu Chen, Zhong Shen, Lourdes Pastor-Pérez, Holger Frey, and Salah-Eddine StiribaView Author Information Institut für Orga…
Luminescence and Fluorescent MaterialsDendrimers and Hyperbranched PolymersSynthesis and properties of polymers
Philippe M. Fauchet2004-12-29Materials Today
Si quantum dots (QDs) as small as ∼2 nm in diameter have been synthesized by a variety of techniques. Because of quantum confinement and the elimination of bulk or surface defects, these dots can emit light from the near infrared throughout the visible with quantum efficiencies in excess of 10%. The luminescence wavel…
Semiconductor materials and devicesSilicon Nanostructures and PhotoluminescenceNanowire Synthesis and Applications