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Excitement in f block : structure, dynamics and function of nine-coordinate chiral lanthanide complexes in aqueous mediaBased on a 2003/4 Tilden Lectureship of the Royal Society of Chemistry first delivered in Strasbourg, 5th December 2003.

David Parker2004-01-01OpenAlex

Lanthanide complexation chemistry has been studied intensively over the past 15 years and progress has been stimulated by the advent of well-defined, kinetically robust systems tailored to applications as bioactive probes for magnetic resonance and luminescence. In this tutorial review, the extent to which an enhanced…

Advanced MRI Techniques and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Nano-biotechnology: carbon nanofibres as improved neural and orthopaedic implants

Thomas J. Webster、Michael C. Waid、Janice L. McKenzie 等 5 位作者2004-01-01OpenAlex

For the continuous monitoring, diagnosis, and treatment of neural tissue, implantable probes are required. However, sometimes such neural probes (usually composed of silicon) become encapsulated with non-conductive, undesirable glial scar tissue. Similarly for orthopaedic implants, biomaterials (usually titanium and/o…

Carbon Nanotubes in CompositesNeuroscience and Neural EngineeringElectrospun Nanofibers in Biomedical Applications

A luminescent tris(2-thenoyltrifluoroacetonato)europium( iii ) complex covalently linked to a 1,10-phenanthroline-functionalised sol–gel glass

Koen Binnemans、Philip Lenaerts、Kris Driesen 等 4 位作者2004-01-01OpenAlex

Lanthanide doped sol–gel glasses are an attractive type of luminescent material which can be processed at ambient temperatures. However, the solubility of the lanthanide complexes in the sol–gel matrix can be a problem and it is difficult to obtain a uniform distribution of the complexes (avoidance of cluster formatio…

Magnetism in coordination complexesLuminescence Properties of Advanced MaterialsLanthanide and Transition Metal Complexes

Controlling Factor of Self-Ordering of Anodic Porous Alumina

Sachiko Ono、Makiko Saito、Miyuki Ishiguro 等 4 位作者2004-01-01OpenAlex

The controlling factor of self-ordering of anodic porous alumina was investigated by focusing on the current density during film growth. The homogeneity of cell size was improved with increasing formation voltage accompanied by the exponential increase in current density. The maximum anodizing voltage for proceeding u…

Advanced ceramic materials synthesisSmart Materials for ConstructionAnodic Oxide Films and Nanostructures

Porphyrin–fullerene linked systems as artificial photosynthetic mimics

Hiroshi Imahori2004-01-01OpenAlex

We have prepared a variety of porphyrin-fullerene linked systems to mimic photoinduced energy and electron transfer (ET) processes in photosynthesis. Photodynamical studies on porphyrin and analogs-fullerene linked systems have revealed the acceleration of photoinduced electron transfer and charge-shift and the decele…

Porphyrin and Phthalocyanine ChemistryPhotosynthetic Processes and MechanismsMolecular Junctions and Nanostructures

A Hybrid Activated Carbon-Manganese Dioxide Capacitor using a Mild Aqueous Electrolyte

Thierry Brousse、Mathieu Toupin、Daniel Bélanger2004-01-01OpenAlex

A hybrid electrochemical capacitor using and activated carbon (AC) as positive and negative electrodes, respectively, has been designed. The electrodes were individually tested in a mild aqueous electrolyte (0.65 M in order to define the adequate balance of active material in the capacitor as well as the working volta…

Conducting polymers and applicationsSupercapacitor Materials and FabricationAdvanced battery technologies research

Synthesis of amino-functionalized MCM-41 via direct co-condensation and post-synthesis grafting methods using mono-, di- and tri-amino-organoalkoxysilanesElectronic supplementary information (ESI) available: XRD patterns of (A) x-dNN-MCM-41 and (B) x-dNNN-MCM-41 after the extraction of the surfactant, 29Si MAS NMR spectra of MCM-41 samples prepared by (A) direct co-condensation and (B) post-synthesis grafting methods. See http://www.rsc.org/suppdata/jm/b3/b310576h/

Toshiyuki Yokoi、Hideaki Yoshitake、Takashi Tatsumi2004-01-01OpenAlex

Amino-functionalized mesoporous MCM-41 materials were synthesized directly by co-condensation of 3-aminopropyltrimethoxysilane (N silane), [1-(2-aminoethyl)-3-aminopropyl]trimethoxysilane (NN silane) or 1-[3-(trimethoxysilyl)propyl]diethylenetriamine (NNN silane) with tetraethyl orthosilicate. The maximum proportions…

Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsSupercapacitor Materials and Fabrication

Hydrothermal synthesis of one-dimensional ZnO nanostructures with different aspect ratios

Bin Cheng、Edward T. Samulski2004-01-01OpenAlex

1-D ZnO nanorods with different aspect ratios were synthesized by a one-step, hydrothermal method. The ZnO nanorods grow along the [0001] direction to form single crystals. The experimental results reveal that the growth of polar inorganic crystals is sensitive to the reaction solvents.

ZnO doping and propertiesCopper-based nanomaterials and applicationsGas Sensing Nanomaterials and Sensors

Structural characteristics defining high barrier properties in polymeric materials

José M. Lagarón、Rafael Catalá、Rafael Gavara2004-01-01OpenAlex

The packaging industry has dramatically increased the number of packaging systems and designs made of plastics over recent decades. Plastics, in contrast with more traditional packaging materials such as glass and metals, are permeable systems that permit the exchange of low molecular weight compounds, e.g. gases and…

biodegradable polymer synthesis and propertiesPolymer Nanocomposites and PropertiesPolymer crystallization and properties

Carboxyl group (–CO 2 H) functionalized ferrimagnetic iron oxide nanoparticles for potential bio-applications

Yu Shi、Gan Moog Chow2004-01-01OpenAlex

A new approach to prepare surface-functionalized magnetic nanoparticles by synthesis of poly(methacrylic acid) (PMAA) coated maghemite nanoparticles in aqueous solution is reported. Maghemite (γ-Fe2O3) nanoparticles with an average diameter of 8 ± 2 nm were fabricated and subsequently coated with PMAA by emulsion poly…

Nanomaterials for catalytic reactionsNanoparticle-Based Drug DeliveryGraphene research and applications

Relationship between antibacterial activity of chitosan and surface characteristics of cell wall

Ying-chienCHUNG、Ya-pingSU、Chiing-changCHEN 等 7 位作者2004-01-01OpenAlex

AIM: Five representative waterborne pathogens were used to illustrate the relationship between chitosan's antibac-terial activity and the surface characteristics of the bacterial cell wall. METHODS: Chitosan was prepared with averaged 75 % or 95 % deacetylated degree to examine its antibacterial activity against water…

Nanocomposite Films for Food PackagingAntimicrobial agents and applications

Electrospinning of chitosan solutions in acetic acid with poly(ethylene oxide)

Bin Duan、Cunhai Dong、Xiaoyan Yuan 等 4 位作者2004-01-01OpenAlex

Electrospinning of chitosan solutions with poly(ethylene oxide) (PEO) in an aqueous solution of 2 wt% acetic acid was studied. The properties of the chitosan/PEO solutions, including conductivity, surface tension and viscosity, were measured. Morphology of the electrospun chitosan/PEO was observed by using scanning el…

Electrospun Nanofibers in Biomedical ApplicationsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications

Mechanical Properties and Shape Memory Behavior of Ti-Nb Alloys

Hee Young Kim、Satoru Hashimoto、Jae Il Kim 等 5 位作者2004-01-01OpenAlex

Mechanical properties and shape memory behavior of Ti-(20—29)at%Nb alloys were investigated in order to develop Ni-free biomedical shape memory alloys. The Ti-Nb alloys were fabricated by arc melting method. The ingots were cold-rolled with a reduction up to 95% in thickness and then solution treated at 1173 K for 1.8…

Advanced materials and compositesShape Memory Alloy TransformationsTitanium Alloys Microstructure and Properties

Solvent-drop grinding: green polymorph control of cocrystallisationElectronic supplementary information (ESI) available: additional powder XRD patterns. See http://www.rsc.org/suppdata/cc/b4/b400978a/

A.V. Trask、W. D. Samuel Motherwell、William Jones2004-01-01OpenAlex

By grinding with a minimal addition of a solvent of appropriate polarity, control over the polymorphic outcome of a novel cocrystallisation involving the model pharmaceutical compound caffeine may be achieved.

Crystallography and molecular interactionsDrug Solubulity and Delivery SystemsCrystallization and Solubility Studies

Synthesis and Characterization of (La[sub 0.75]Sr[sub 0.25])Cr[sub 0.5]Mn[sub 0.5]O[sub 3−δ], a Redox-Stable, Efficient Perovskite Anode for SOFCs

Shanwen Tao、John T. S. Irvine2004-01-01OpenAlex

Perovskite-related materials, (LSCM), have been synthesised and examined as potential anode materials for solid oxide fuel cells (SOFCs). exhibits a rhombohedral structure. It appears to be chemically compatible with yttria-stabilized zirconia (YSZ) to at least 1300°C. At 900°C, its electrical conductivity is about 38…

Electronic and Structural Properties of OxidesMagnetic and transport properties of perovskites and related materialsAdvancements in Solid Oxide Fuel Cells

Synthesis of new nanoporous carbon materials using nanostructured silica materials as templates

Jinwoo Lee、Sang Jin Han、Taeghwan Hyeon2004-01-01OpenAlex

In this review, we summarize recent reports on the synthesis of various nanoporous carbon materials. Many nanoporous carbon materials having variable pore sizes and pore structures have been synthesized using appropriate nanostructured silica materials as templates. Nanoporous carbons with high pore volumes and unifor…

Supercapacitor Materials and FabricationCatalytic Processes in Materials ScienceMesoporous Materials and Catalysis

Carbon nanotubes as field emission sources

W. I. Milne、K. B. K. Teo、G.A.J. Amaratunga 等 9 位作者2004-01-01OpenAlex

Micro and nano-structurally rich carbon materials are alternatives to conventional metal/silicon tips for field emission sources. In particular, carbon nanotubes exhibit extraordinary field emission properties because of their high electrical conductivity, their high aspect ratio “whisker-like” shape for optimum geome…

Carbon Nanotubes in CompositesGraphene research and applicationsMechanical and Optical Resonators

Hierarchical self-assembly in polymeric complexes: Towards functional materials

Olli Ikkala、Gerrit ten Brinke2004-01-01OpenAlex

Combination of self-assembly at different length scales leads to structural hierarchies. It offers rich possibilities to construct nanostructured matter, nanoscale parts, and switching (responsive) properties based on the phase transitions of the self-assembled structures. Complexation of oligomeric amphiphiles to pol…

Block Copolymer Self-AssemblyPolymer Surface Interaction StudiesAdvanced Polymer Synthesis and Characterization

Porous calcium carbonate microparticles as templates for encapsulation of bioactive compounds

Gleb B. Sukhorukov、Dmitry Volodkin、Anja M. Günther 等 6 位作者2004-01-01OpenAlex

The paper describes the preparation and characterisation of porous calcium carbonate microparticles with an average size of 5 µm and their use for encapsulation of biomacromolecules. The average pore size of about 30–50 nm enables size selective and time-dependent permeation of different macromolecules. Layer-by-layer…

Electrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studiesbiodegradable polymer synthesis and properties

Hydrogen in oxides

Truls Norby、Marius Widerøe、Ronny Glöckner 等 4 位作者2004-01-01OpenAlex

The paper reviews the history and present understanding of protons in oxides; their defect chemistry, thermodynamics, and transport. Focus is put on correlations between hydration thermodynamics and other materials properties which may help to predict proton uptake and proton conduction in oxides. Also effects of defe…

Advancements in Solid Oxide Fuel CellsThermal Expansion and Ionic ConductivityNuclear Materials and Properties