Yasuhiro Kawashima、Masaru Nakagawa、Kunihiro Ichimura 等 4 位作者2004-01-01Journal of Materials Chemistry
Successful photo-orientation of mesostructured surfactant/silica hybrids is performed via hierarchically relayed multiple transfers among hetero-interfaces. A Langmuir–Blodgett monolayer of the azobenzene-containing polymer was first optically oriented via irradiation with linearly polarized light, and the photoinduce…
Photonic Crystals and ApplicationsMesoporous Materials and CatalysisElectrowetting and Microfluidic Technologies
John D. Harvey、Christopher J. Ziegler2004-01-01Chemical Communications
We report the syntheses of cobalt N-confused porphyrins; this work completes the series of the late first-row transition metals that have been incorporated into the core of N-confused porphyrin, and in these compounds the macrocycles can act as either a -2 or -3 anion.
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Salvatore Sortino、Salvatore Petralia、Sabrina Conoci 等 4 位作者2004-01-01Journal of Materials Chemistry
The reversible trans ↔ cis photoisomerization of azobenzene-based self-assembled monolayers on ultrathin platinum films has been monitored for the first time by UV-Vis transmission spectroscopy with a conventional spectrophotometer.
Molecular Junctions and NanostructuresPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research
Benjamin Folch、Joulia Larionova≠、Yannick Guari≠ 等 6 位作者2004-01-01Journal of Materials Chemistry
A new approach to the synthesis and the organization of Mn3O4 (hausmannite) nanoparticles has been developed using the thermolysis of the magnetic cluster [Mn12O12(C2H5COO)16(H2O)3] linked to a SBA-15 mesoporous silica functionalized with –COOH groups. The obtained composites were studied by X-Ray diffraction (XRD), i…
Magnetism in coordination complexesMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
Hiroyuki Ohde、Mariko Ohde、Chien M. Wai2004-01-01Chemical Communications
Swelled plastics in supercritical carbon dioxide provide unique environments for stabilizing palladium and rhodium nanoparticles and for catalytic hydrogenation. Complete hydrogenation of benzene to cyclohexane can be achieved in 10 minutes using the plastic stabilized Rh nanoparticles at 50 degrees C in supercritical…
Catalytic Processes in Materials SciencePhase Equilibria and ThermodynamicsCarbon dioxide utilization in catalysis
E. Johan Foster、Jarret Babuin、Natalie Nguyen 等 4 位作者2004-01-01Chemical Communications
Unsymmetrical dibenzophenazine discotic mesogens were prepared via the corresponding tetraalkoxybenzil derivatives. These dibenzophenazines exhibit Colho phases over extremely broad temperature ranges.
Liquid Crystal Research AdvancementsOrganic Light-Emitting Diodes ResearchNonlinear Optical Materials Research
Morgan R. Alexander、Jason D. Whittle、David Barton 等 4 位作者2004-01-01Journal of Materials Chemistry
Organic surfaces of specific chemistry can be fabricated using plasma polymerisation. A recently developed deposition approach allows gradients in surface carboxyl group concentration to be fabricated over a distance of 13 mm from a mixed acrylic acid/octadiene plasma. The utility of these surfaces in the investigatio…
Surface Modification and SuperhydrophobicityDiamond and Carbon-based Materials ResearchAnalytical Chemistry and Sensors
S.T.M. Allard、W. W. Cleland、Hazel M. Holden2004-01-01Journal of Biological Chemistry
Desosamine is a 3-(dimethylamino)-3,4,6-trideoxyhexose found in some macrolide antibiotics. In Streptomyces venezuelae, there are seven genes required for the biosynthesis of this unusual sugar. One of the genes, desIV, codes for a dTDP-glucose 4,6-dehydratase, which is referred to as DesIV. The reaction mechanisms fo…
Protein Structure and DynamicsEnzyme Structure and FunctionBiochemical and Molecular Research
Hiroaki Tsuchiya、Shinji Fujimoto、Toshio Shibata2004-01-01Journal of The Electrochemical Society
Passive films formed on Fe-18Cr alloy in a borate buffer solution were studied using impedance spectroscopy and photoelectrochemical response. The passive film was composed of an inner oxide and covering hydroxide layer. Both layers exhibited n-type semiconductor properties with an optical bandgap energy, E g , of 3.4…
Corrosion Behavior and InhibitionHigh-Temperature Coating BehaviorsHydrogen embrittlement and corrosion behaviors in metals
Ren‐Hua Jin2004-01-01Journal of Materials Chemistry
Water soluble star polymers consisting of a porphyrin center and four poly(oxazolines) arms such as Por-[poly(methyloxazoline)]4 (1), Por-[poly(ethyloxazoline)]4 (2), Por-[poly(methyloxazoline-co-ethyloxazoline)]4 (3) and Por-[poly(methyloxazoline)-b-poly(ethyloxazoline)]4 (4) were synthesized and used for the investi…
Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryCovalent Organic Framework Applications
Shigeru Fujino、Chawon Hwang、Kenji Morinaga2004-01-01Journal of the American Ceramic Society
The density, surface tension, and viscosity of the melts from the PbO‐B 2 O 3 ‐SiO 2 system have been measured at temperatures in the range 1073–1473 K. The effect of composition on these properties was also investigated. The density of the melt was found to increase linearly with increasing PbO content. Molar volume…
Glass properties and applicationsMetallurgical Processes and ThermodynamicsMaterials Engineering and Processing
G. Vourlias、N. Pistofidis、G. Stergioudis 等 4 位作者2004-01-01Crystal Research and Technology
Abstract The influence of the alloying elements on the interface reactions of zinc coatings during the galvanization process was examined. These reactions affect the crystallization and the structure and properties of the outer layer of the coatings. Depending on the type and concentration of the alloying additions in…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
Chetan Singh Solanki、R. Bilyalov、J. Poortmans 等 6 位作者2004-01-01Journal of The Electrochemical Society
A novel technique for the formation and lift-off of thin porous silicon films from starting substrates in a single step by electrochemical etching in hydrofluoric acid-based solutions is described. Lift-off or separation of porous silicon (PS) film occurs under specific sets of current density and HF concentration, wh…
Semiconductor materials and devicesSilicon Nanostructures and PhotoluminescenceNanowire Synthesis and Applications
Jan‐Henrik Smått、Bernd Spliethoff、Jarl B. Rosenholm 等 4 位作者2004-01-01Chemical Communications
Nanocrystalline cobalt oxide, Co(3)O(4), monoliths exhibiting hierarchical bimoidal porosity have been prepared by nanocasting of porous silica monoliths.
Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisNanoporous metals and alloys
Xiaowen Yuan、Krishnan Jayaraman、Debes Bhattacharyya2004-01-01Journal of Adhesion Science and Technology
In recent years, sisal fibres have become a promising reinforcement for composites because of their low cost, low density, high specific strength, high specific modulus, easy availability and renewability. However, the poor adhesion between the hydrophilic sisal fibre and the hydrophobic thermoplastic matrices has adv…
Natural Fiber Reinforced CompositesTribology and Wear AnalysisMechanical Engineering and Vibrations Research
V. Ugrinova、Gregory A. Ellis、Seth N. Brown2004-01-01Chemical Communications
The monomeric titanium(IV) hydroxide complex, LTi(OH)(LH(3)= tris(2-hydroxy-3,5-di-tert-butylbenzyl)amine), which is sterically inhibited from condensation to a mu-oxo dimer, cannot be prepared by hydrolysis of the alkoxide, with K(eq)= 0.012 for hydrolysis of the titanium methoxide in THF.
Radioactive element chemistry and processingPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Reactions
K. Singh、S. A. Band、W. K. KINGE2004-01-01Ferroelectrics
Lead iron niobate [Pb(Fel/2Nb1/2)]O3 (PFN) are synthesized by using precursor method. Three different sintering temperatures (1000, 1040 and 1100°C) are selected to optimize the PFN processing technique. X-ray powder diffraction studies confirm the formation of single-phase perovskite PFN. The scanning electron micros…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics
Hrvoje Meštrić、Rüdiger‐A. Eichel、Dinse, Klaus-Peter 等 6 位作者2004-01-01TUbilio (Technical University of Darmstadt)
The intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance (EPR) spectroscopy in order to determine the local-environment sensitive fine structure parameter D. At a spectrometer frequency of 190 GHz, spectral analysis of a powder…
Ferroelectric and Piezoelectric MaterialsSolid-state spectroscopy and crystallographyMicrowave Dielectric Ceramics Synthesis
Joan Gomà、R. D. C. Ortiz、Jaume Cambra 等 4 位作者2004-01-01HAL (Le Centre pour la Communication Scientifique Directe)
International audience
Aquatic Ecosystems and Phytoplankton DynamicsDiatoms and Algae Research
Nicolas Sanson、Frédéric Bouyer、Corine Gérardin 等 4 位作者2004-01-01Physical Chemistry Chemical Physics
We recently reported on the controlled formation of highly stable metal hydroxide nanoparticles. Growth control and stabilization of particles were achieved by performing hydrolysis and polycondensation reactions of polymer-complexed metal cations, the polymers being double hydrophilic block copolymers (DHBCs). The pr…
Advanced Polymer Synthesis and CharacterizationPolymer Surface Interaction StudiesElectrostatics and Colloid Interactions