M. Carmen Muñoz、Miguel Julve、Francesc Lloret 等 5 位作者1998-01-01Journal of the Chemical Society Dalton Transactions
Two new chromium(III)-containing complexes of formula AsPh4[Cr(bipy)(ox)2]·H2O 1 and [NaCr(bipy)(ox)2(H2O)]· 2H2O 2 (bipy = 2,2′-bipyridine and ox = oxalate dianion) have been synthesized and characterized by single-crystal X-ray diffraction. The structure of 1 consists of discrete [Cr(bipy)(ox)2]– mononuclear anions,…
Metal-Organic Frameworks: Synthesis and ApplicationsMetal complexes synthesis and propertiesMagnetism in coordination complexes
М. А. Анисимов、V. A. Agayan、Peter J. Collings1998-01-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
The analogy with the liquid-gas critical point is analyzed to clarify the nature of the pretransitional behavior of physical properties in the vicinity of the Blue-Phase-III--isotropic transition in chiral liquid crystalline systems. The analogy is unusual: temperature serves as the ordering field and entropy plays th…
Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesMolecular spectroscopy and chirality
Kei Inumaru、Akiko Ono、Hiroshi Kubo 等 4 位作者1998-01-01Journal of the Chemical Society Faraday Transactions
The states and roles of vanadium of 11-molybdo-1-vanadophosphoric acid (H4PMo11VO40, PMo11V) catalyst in the partial oxidation of isobutane (2-methylpropane) were analysed by EPR, 51V and 31P NMR, IR spectroscopy, and redox titration, and compared with dodecamolybdophosphoric acid (H3PMo12O40, PMo12) catalyst. Thermal…
Polyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation ReactionsChemical Synthesis and Reactions
Laurence Rouxhet、Florence Duhoux、Olga Borecky 等 5 位作者1998-01-01Journal of Biomaterials Science Polymer Edition
The effect of alkaline hydrolysis on several surface properties of poly(hydroxybutyrate-hydroxyvalerate) (92/8) (PHB/HV) and poly(epsilon-caprolactone) (PCL) films and of poly(ethylene terephtalate) (PET) track-etched membranes have been characterized, as well as the adsorption of three proteins normally encountered b…
biodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical ApplicationsPolymer Surface Interaction Studies
Cleva W. Ow‐Yang、Doren Spinner、Yuzo Shigesato 等 4 位作者1998-01-01Journal of Applied Physics
Amorphous tin-doped indium oxide (ITO) was deposited to a thickness of 110 nm on 〈100〉-oriented Si substrates at ∼40–60 °C by dc-magnetron sputtering under a total Ar pressure of 2 Pa. The kinetics of crystallization of the a-ITO films in flowing N2 were investigated by in situ time-resolved reflectivity. The microstr…
ZnO doping and propertiesThin-Film Transistor TechnologiesTransition Metal Oxide Nanomaterials
W. Clegg1998-01-01Medical Entomology and Zoology
1. The basis of the method 2. The method step by step 3. The method illustrated by edxamples 4. Further topics Appendix (Answers to problems)
X-ray Diffraction in Crystallography
G. Storm、M. T. ten Kate、Peter K. Working 等 4 位作者1998-01-01PubMed
The introduction of long-circulating liposomes sterically stabilized by surface coating with polyethylene glycol has expanded the potential for drug targeting to tumors. In recent clinical studies, evidence of significant antitumor activity has been obtained with the industrially prepared formulation of long-circulati…
Nanoparticle-Based Drug DeliveryNanoplatforms for cancer theranosticsCancer Research and Treatments
Bi‐Zeng Zhan、Xiaoyuan Li1998-01-01Chemical Communications
Electrostatic interaction is introduced between the host and guest in the synthesis of faujasite-Y confined metallotetrakis(N,N,N-trimethylanilinium) porphyrin cations (MTMAnP4+); the synthesized composites display high catalytic activity in the oxidation of cyclohexene.
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsSurface Chemistry and Catalysis
Hao Zhou、Hisahiro Sasabe、Itaru Honma1998-01-01Journal of Materials Chemistry
Photosensitive copper phthalocyanine-(CuPc) doped silica mesoporous materials (in powder) have been directly synthesized by a self-organizing coassembly process using a functional surfactant, 11-ferrocenyltrimethylundecylammonium (ferrocenyl TMA) molecules. This simple method shows that it is not necessary to dope mol…
Mesoporous Materials and CatalysisPorphyrin and Phthalocyanine ChemistrySurface Chemistry and Catalysis
Sabine Petit1998-01-01Clay Minerals
A new method of measuring the layer charge of smectites by IR spectroscopy is proposed based on the integrated intensity measurement of the band assigned to the ammonium fundamental upsilon 4 mode of NH (super +) 4 -exchanged clays. Measurements are made before and after Li fixation (Hofman & Klemen effect). These all…
Mesoporous Materials and CatalysisClay minerals and soil interactionsIron oxide chemistry and applications
Galo J. de A. A. Soler-Iltia、Matı́as Jobbágy、Roberto Candal 等 5 位作者1998-01-01Journal of Dispersion Science and Technology
An analysis of the urea method as a way to synthesize uniform colloidal particles is presented. Various selected cases of precipitation and coprecipitation are reviewed to illustrate the inherent complexities of the method. The importance of the kinetics of urea hydrolysis is recognized. The concept of trajectory is u…
Adsorption and biosorption for pollutant removalSurfactants and Colloidal SystemsMesoporous Materials and Catalysis
Noboru Ono、Hirokazu Miyagawa、Takahiro Ueta 等 5 位作者1998-01-01Journal of the Chemical Society Perkin Transactions 1
3,4-Diarylpyrroles (1) have been directly prepared in 20–50% yield by the reaction of β-nitrostyrenes with aqueous TiCl3 in 1,4-dioxane. Pyrroles 1 were also prepared via Barton–Zard pyrrole synthesis using the reaction of α-nitrostilbenes with ethyl isocyanoacetate followed by de-ethoxycarbonylation. 3,4-Diarylpyrrol…
Porphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsSynthesis and Characterization of Pyrroles
Encai Hao、Bai Yang、Junhu Zhang 等 6 位作者1998-01-01Journal of Materials Chemistry
A composite film comprising TiO2 and CdS nanoparticles was fabricated based on an alternating deposition method; this was confirmed by UV–VIS spectroscopy, TEM, and photocurrent measurements.
TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesQuantum Dots Synthesis And Properties
Joulia Larionova≠、J. Sanchíz、Olivier Kahn 等 5 位作者1998-01-01Chemical Communications
Slow diffusion of aqueous solutions containing K4[MoIII(CN)7]·2H2O and a MnII salt, respectively, affords well shaped single crystals of two cyano-bridged bimetallic phases ordering ferromagnetically with a pronounced magnetic anisotropy in the magnetically-ordered phase.
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesAdvanced NMR Techniques and Applications
Pramod S. Kumbhar1998-01-01Chemical Communications
Modified Mg–Al hydrotalcite (Mg:Al = 3:1) prepared by thermal decarbonation followed by rehydration of a conventional Mg–Al hydrotalcite is found to be a highly active, reusable and air stable catalyst for cyanoethylation of alcohols.
Chemical Synthesis and ReactionsLayered Double Hydroxides Synthesis and ApplicationsMagnesium Oxide Properties and Applications
Joan Ribas、C. Díaz、R. Costa 等 7 位作者1998-01-01Inorganic Chemistry
The reaction of ethanolic/water solutions of NiX 2 ·6H 2 O (X = NO 3 -, ClO 4 - ), bidentate amine N,N,N‘,N ‘-tetramethylethylenediamine (tmen) and N,N,N ‘-trimethylethylenediamine (trimen) with [Cu(oxpn)] (oxpn = N, N ‘-bis(3-aminopropyloxamide) and ammonium thiocyanate, in the presence of ammonium hexafluorophosphat…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Lei Huang、Alan E. Tonelli1998-01-01Journal of macromolecular science. Part C, Reviews in macromolecular chemistry and physics/Journal of macromolecular science. Reviews in macromolecular chemistry and physics
1. INTRODUCTION 1.1. Background Schlenk was the first to use the term inclusion compound (IC) to describe the crystalline adducts in which one component (host molecule) crystallizes into a matrix, isolating the second component (guest molecule) into cavities of well-defined geometry [1]. Most of the ICs reported have…
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysis
David R. Leonard、N.D. Lindley1998-01-01Microbiology
Summary: The growth behaviour of Alcaligenes eutrophus on phenol was investigated in continuous cultures to identify the phenomena limiting both growth efficiency and substrate degradation rates. It was shown that the fixed stoichiometry of the meta pathway of phenol degradation, leading to equimolar quantities of pyr…
Enzyme Catalysis and Immobilizationbiodegradable polymer synthesis and propertiesMicrobial Metabolic Engineering and Bioproduction
Yasuaki Okamoto、Takeshi Kubota、Hideki Gotoh 等 7 位作者1998-01-01Journal of the Chemical Society Faraday Transactions
A Cu/ZrO2 (1 wt.% Cu) catalyst shows high activity for the NO–CO reaction, even at low temperature (100–200 °C). However, the low-temperature activity is easily lost during prolonged reaction at 250 °C. The activity of the deactivated Cu/ZrO2 catalyst is completely restored by NO treatment (1% in He) at >250 °C or O2…
Catalytic Processes in Materials ScienceNanomaterials for catalytic reactionsPigment Synthesis and Properties
Yoshiro Yamashita、Masaaki Tomura1998-01-01Journal of Materials Chemistry
New types of π-electron donors and acceptors with high polarizability are reviewed. TTF derivatives with polarizable substituents, π-extended TTF analogues fused with nitrogen-containing heterocycles and non-TTF donors (i.e. electron donors) and chalcogen atom-containing quinones, TCNQ and DCNQI analogues (i.e. electr…
Magnetism in coordination complexesMolecular Junctions and NanostructuresOrganic and Molecular Conductors Research