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Low‐temperature route to thermoplastic polyamide elastomers

Gouher Rabani、Georgina M. Rosair、Arno Kraft2004-02-02Journal of Polymer Science Part A Polymer Chemistry

Abstract Thermoplastic polyamide elastomers were obtained by polymerization of aminobenzoyl‐substituted telechelics derived from poly(tetrahydrofuran)‐diols (number‐average molecular weight: 1400 or 2000 g mol −1 ) with several diacid dichlorides (terephthaloyl dichloride, 4,4′‐biphenyldicarbonyl dichloride, or 2,6‐na…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesSynthesis and properties of polymers

CdS Nanobelts on Si Substrate

Weifeng Liu、Chuangui Jin、Chong Jia 等 6 位作者2004-02-02Chemistry Letters

Abstract CdS nanobelts were successfully synthesized by rapidly evaporating CdS nanoparticles. The nanobelts are single crystals with a hexagonal structure growing along the [001] direction. Photoluminescence measurement shows that the nanobelts have two emission bands around 517 and 735 nm, which should come from the…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanowire Synthesis and Applications

Polypropylene modified with elastomeric metallocene‐catalyzed polyolefin blends: Fracture behavior and development of damage mechanisms

L. Fasce、Patricia M. Frontini、Shing‐Chung Wong 等 4 位作者2004-02-02Journal of Polymer Science Part B Polymer Physics

Abstract The fracture behavior and deformation mechanisms of polypropylene modified by elastomeric metallocene‐catalyzed polyolefin blends were investigated under both static and dynamic loading conditions. The fracture toughness was evaluated with the J integral approach. The development of damage mechanisms was stud…

Mechanical Behavior of CompositesPolymer crystallization and propertiesPolymer Nanocomposites and Properties

Supramolecular Photomagnetic Materials: Photoinduced Dimerization of Ferrocene‐Based Polychlorotriphenylmethyl Radicals

Imma Ratera、Daniel Ruiz‐Molina、J. Vidal-Gancedo 等 8 位作者2004-02-02Chemistry - A European Journal

New ferrocenyl Schiff-base polychlorotriphenylmethyl radicals have been synthesized and characterized. The imino group of one such radical undergoes an irreversible trans to cis structural isomerization induced by light. Such photoinduced isomerization has been monitored by UV/Vis and ESR spectroscopy and also monitor…

Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistrySynthesis and Properties of Aromatic Compounds

Hall effect, space-charge limited current and photoconductivity measurements on TlGaSe2layered crystals

A. F. Qasrawi、N.M. Gasanly2004-02-02Semiconductor Science and Technology

TlGaSe 2 layered crystals are studied through dark electrical conductivity, Hall mobility, space-charge limited current and illumination- and temperature-dependent photoconductivity in the temperature ranges 120–350 K, 220–350 K, 260–350 K and 120–350 K, respectively. The Hall effect measurements revealed the extrinsi…

Crystal Structures and PropertiesNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography

Promotion of Fluorapatite Crystallization by Soluble‐Matrix Proteins fromLingula AnatinaShells

Ingrid Lévêque、Maggie Cusack、Sean A. Davis 等 4 位作者2004-02-02Angewandte Chemie International Edition

The geological longevity of Lingula, depicted, suggests that the lightly mineralized carbonate-substituted fluorapatite (FAP) shell has remained well-adapted to evolutionary pressures. Contrary to earlier studies, soluble macromolecules isolated from Lingula shells are shown to specifically promote FAP crystallization…

Bone Tissue Engineering MaterialsPaleontology and Stratigraphy of FossilsCalcium Carbonate Crystallization and Inhibition

Rapid Crystallization of High Quality Cubic Sillica SBA-16 Nanoporous Material

Chi‐Feng Cheng、Yi‐Chun Lin、Hsu‐Hsuan Cheng 等 5 位作者2004-02-02Chemistry Letters

Abstract High quality cubic SBA-16 can be synthesized rapidly at room temperature in 1 h using low surfactant concentrations and has 65% of micropore volume and 5.3 nm of wall thickness on average. The structure integrity of SBA-16 is very sensitive to the acid concentration in gel because of the necessity of moderate…

Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisAerogels and thermal insulation

Preparation of uniform CdSe/polyelectrolyte multilayers on the surface of SiO2spheres

Shicheng Zhang、Jie Chen、Xingguo Li2004-02-02Nanotechnology

CdSe/PE2 (PE means polyelectrolyte) multilayers have been successfully synthesized on the surface of SiO2 spheres by using a layer-by-layer technique. The layer structure can be distinguished clearly and the layer thickness can be tailored easily.

Quantum Dots Synthesis And PropertiesPolymer Surface Interaction StudiesMolecular Junctions and Nanostructures

Benzoyl peroxide oxidation route to polyaniline salts—Part I

Srinivasan Palaniappan2004-02-02Polymers for Advanced Technologies

Abstract Aniline was oxidized to polyaniline salt using benzoyl peroxide as an oxidizing agent in the presence of acids such as sulfuric, nitric, or hydrochloric acid by aqueous polymerization pathway. Polyaniline salts, their corresponding bases and redoped polyaniline salts were characterized by infrared, electronic…

Conducting polymers and applicationsElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors

Doubly N‐Fused Pentaphyrin

A. Srinivasan、Tomoya Ishizuka、Hiroyuki Furuta2004-02-02Angewandte Chemie

Invertiert und anelliert: Nach einem [3+2]-Ansatz wurde ein meso-Pentafluorphenyl-substituiertes Pentaphyrin synthetisiert, das einen N-invertierten Pyrrolring und zwei N-anellierte tricyclische Einheiten aufweist. Das Bild zeigt die Struktur im Kristall (F grün, N blau).

Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryPorphyrin Metabolism and Disorders

A novel and rapid method for quantification of magnetic nanoparticle–cell interactions using a desktop susceptometer

Valter Ström、Kjell Hultenby、Cordula Grüttner 等 6 位作者2004-02-02Nanotechnology

Activated endothelial cells (EC) are attractive prime targets for specific drug delivery using drug-carrying magnetic nanoparticles. In order to accomplish EC targeting, the interaction between magnetic particles and resting as well as activated endothelial cells must be characterized and quantified, because it will i…

Nanoparticle-Based Drug DeliveryMicrofluidic and Bio-sensing TechnologiesCharacterization and Applications of Magnetic Nanoparticles

Synthesis, Fluorescence and Photoisomerization Studies of Azobenzene‐Functionalized Poly(alkyl aryl ether) Dendrimers

Jayaraj Nithyanandhan、Narayanaswamy Jayaraman、Riju Davis 等 4 位作者2004-02-02Chemistry - A European Journal

A series of azobenzene-functionalized poly(alkyl aryl ether) dendrimers have been synthesized and their photochemical and photophysical properties in solution and as thin films have been investigated. Although the photochemical behavior of the azodendrimers in solution indicated that the azobenzene units behave indepe…

Luminescence and Fluorescent MaterialsDendrimers and Hyperbranched PolymersPhotochromic and Fluorescence Chemistry

Mechanical and barrier properties of sodium caseinate–anhydrous milk fat edible films

Khaoula Khwaldia、Sylvie Banon、Stéphane Desobry 等 4 位作者2004-02-02International Journal of Food Science & Technology

Abstract Edible films were cast from solutions of sodium caseinate (NaCAS) and from emulsions of this protein with anhydrous milk fat (AMF). The moisture sorption isotherms, mechanical properties [tensile strength (TS) and elongation] and water vapour and oxygen permeabilities were determined for films based on NaCAS…

Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesMicroencapsulation and Drying Processes

Dependence of workfunction on the geometries of single-walled carbon nanotubes

Chun‐Wei Chen、Ming‐Hsien Lee2004-02-02Nanotechnology

The effective workfunctions of single-walled carbon nanotubes of armchair (5,5) and zigzag (9,0) with various geometries have been calculated by first-principles calculations. The results show that the capped and H-terminated zigzag (9,0) carbon nanotubes exhibit a lower workfunction value than the armchair (5,5) nano…

Carbon Nanotubes in CompositesGraphene research and applicationsSupercapacitor Materials and Fabrication

Rational Design of an Enneanuclear Copper(II) Complex with a Metallacyclophane Core

Xavier Ottenwaelder、Joan Cano、Yves Journaux 等 7 位作者2004-02-02Angewandte Chemie International Edition

A hexakis-bidentate building block: Tricopper(II) and enneacopper(II) 1,3,5-metallacyclophanes were synthesized by a combination of self-assembly and a rational approach (see scheme). Both complexes exhibit ferromagnetic coupling in the core, through a spin-polarization mechanism.

Metal complexes synthesis and propertiesMagnetism in coordination complexesMetal-Catalyzed Oxygenation Mechanisms

Characteristics of edible films made from dairy proteins and zein hydrolysate cross-linked with transglutaminase

Jun‐Hyun Oh、Baowu Wang、Perris D. Field 等 4 位作者2004-02-02International Journal of Food Science & Technology

Abstract The main objectives of this research were to develop whey protein or casein films incorporating zein hydrolysate and also cross-linked by transglutaminase as to well as characterize the physical and mechanical properties of the film. Zein hydrolysate decreased the solubility of the whey protein film (P &l…

Proteins in Food SystemsNanocomposite Films for Food PackagingFood Allergy and Anaphylaxis Research

Doubly N‐Fused Pentaphyrin

A. Srinivasan、Tomoya Ishizuka、Hiroyuki Furuta2004-02-02Angewandte Chemie International Edition

Inverted and fused: Meso-pentafluorophenyl-substituted N-confused, doubly N-fused pentaphyrin (see X-ray crystal structure; green: F, blue: N) was synthesized from [3+2] coupling of confused tripyrrane and dipyrromethane dicarbinol, followed by oxidation. Inverted pyrrole rings in pentaphyrin are easily transformed in…

Porphyrin and Phthalocyanine ChemistryHeme Oxygenase-1 and Carbon MonoxidePorphyrin Metabolism and Disorders

Miscibility, specific interactions, and self‐assembly behavior of phenolic/polyhedral oligomeric silsesquioxane hybrids

Yuan‐Jyh Lee、Shiao‐Wei Kuo、Wu‐Jang Huang 等 5 位作者2004-02-02Journal of Polymer Science Part B Polymer Physics

Abstract The miscibility of a phenolic resin with polyhedral oligomeric silsesquioxane (POSS) hybrids and the specific interactions between them were investigated with Fourier transform infrared (FTIR) spectroscopy and wide‐angle X‐ray diffraction (WAXD). An analysis of the morphology and microstructure was performed…

Advanced ceramic materials synthesisSynthesis and characterization of novel inorganic/organometallic compoundsSilicone and Siloxane Chemistry

Synthesis, Characterization and Photochromic Studies of Spirooxazine‐Containing 2,2′‐Bipyridine Ligands and Their Rhenium(i) Tricarbonyl Complexes

Chi‐Chiu Ko、Lixin Wu、Keith Man‐Chung Wong 等 5 位作者2004-02-02Chemistry - A European Journal

A series of spirooxazine-containing 2,2'-bipyridine ligands and their rhenium(i) tricarbonyl complexes has been designed and synthesized, and their photophysical, photochromic and electrochemical properties have been studied. The X-ray crystal structures of two of the complexes have been determined. Detailed studies s…

Radical Photochemical ReactionsPorphyrin and Phthalocyanine ChemistryPhotochromic and Fluorescence Chemistry

Enhanced Fluorescence of Remote Functionalized Diaminodicyanoquinodimethanes in the Solid State and Fluorescence Switching in a Doped Polymer by Solvent Vapors

Subbalakshmi Jayanty、T. P. Radhakrishnan2004-02-02Chemistry - A European Journal

Remote functionalized zwitterionic diaminodicyanoquinodimethanes are found to exhibit a dramatic enhancement of light emission in the solid state and when doped in polymer films, as compared to the solution state. Crystal structure analysis of prototypical molecules reveals the role of the remote functionality in the…

Organic Electronics and PhotovoltaicsLuminescence and Fluorescent MaterialsPhotochromic and Fluorescence Chemistry