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Entropy driven phase transitions in colloid–polymer suspensions: Tests of depletion theories

Subramanian Ramakrishnan、Matthias Fuchs、Kenneth S. Schweizer 等 4 位作者2002-02-01The Journal of Chemical Physics

The phase behavior of model athermal silica (radius R=50 nm)–polystyrene–toluene suspensions has been determined over nearly two orders of magnitude in polymer or colloid size asymmetry. Fluid–gel, fluid–crystal, and fluid–fluid transitions are observed as Rg, the polymer radius of gyration, increases. Based on the po…

Surfactants and Colloidal SystemsMaterial Dynamics and PropertiesTheoretical and Computational Physics

Hydrothermally Stable Ordered Hexagonal Mesoporous Aluminosilicates Assembled from a Triblock Copolymer and Preformed Aluminosilicate Precursors in Strongly Acidic Media

Yu Han、Shuo Wu、Yinyong Sun 等 7 位作者2002-02-01Chemistry of Materials

Mesoporous aluminosilicates (MAS-9) with ordered hexagonal struture have been prepared by assembly of preformed aluminosilicate precursors with a triblock copolymer in strongly acidic media by a two-step procedure. MAS-9 exhibits extraordinarily good hydrothermal stability and high catalytic activities for the crackin…

Mesoporous Materials and CatalysisZeolite Catalysis and SynthesisMetal-Organic Frameworks: Synthesis and Applications

Chalcogen-Bridged Copper Clusters

Stefanie Dehnen、Andreas Eichhöfer、Dieter Fenske2002-02-01European Journal of Inorganic Chemistry

The investigation of coinage metal molecular clusters bridged by chalcogen atoms represents an area of ever increasing activity in recent chemical and material science research. This is largely due to the relatively high ionic and even higher electric conductivity of binary coinage metal chalcogenides, which leads to…

Nanocluster Synthesis and ApplicationsInorganic Chemistry and MaterialsQuantum Dots Synthesis And Properties

Synthesis and Rheology of Intercalated Polystyrene/Na+-Montmorillonite Nanocomposites

Tae Hyong Kim、Lee Wook Jang、Dong C. Lee 等 5 位作者2002-02-01Macromolecular Rapid Communications

Polystyrene (PS)/clay nanocomposites were synthesized by the emulsion polymerization of styrene in the presence of sodium ion-exchanged montmorillonite (Na+-MMT), demonstrating that the strongly hydrophobic PS was intercalated into the hydrophilic silicate layers. The nanocomposites were examined by means of X-ray dif…

biodegradable polymer synthesis and propertiesPolymer Nanocomposites and PropertiesPolymer composites and self-healing

Synthesis of closed PbS nanowires with regular geometric morphologiesElectronic supplementary information (ESI) available: XRD pattern of the PbS CNWs, FTIR spectrum of the polymer, TEM images of more PbS CNWs. See http://www.rsc.org/suppdata/jm/b1/b111187f/

Dabin Yu、Debao Wang、Zhaoyu Meng 等 5 位作者2002-02-01Journal of Materials Chemistry

Closed PbS nanowires with regular geometric morphologies (ellipse and parallelogram shape) were synthesized in the presence of poly[N-(2-aminoethyl)acrylamide] in ethylenediamine/H2O (3∶1, v/v) solvent at 110–150 °C.

Chalcogenide Semiconductor Thin FilmsQuantum Dots Synthesis And PropertiesMolecular Junctions and Nanostructures

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作者信息未提供2002-02-01Science and Engineering of Composite Materials