Takashi Oda、Satoru Nakashima、Tsutomu Okuda2003-07-26Inorganic Chemistry
The effects of cation symmetry and packing on the mixed-valence state of binuclear ferrocene derivatives are discussed separately by using chiral isomers and racemic modification of 1',1' "-bis(2-phenylbutyl)-1,1' '-biferrocenium pentaiodide. The pentaiodide anion has a polymeric structure and is composed of triiodide…
Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesFerrocene Chemistry and Applications
T.C. Castle、Richard I. Maurer、Frank E. Sowrey 等 7 位作者2003-07-26Journal of the American Chemical Society
The first copper bis(selenosemicarbazone) complexes have been synthesized, using the ligands glyoxal bis(selenosemicarbazone), pyruvaldehyde bis(selenosemicarbazone), and 2,3-butanedione bis(selenosemicarbazone). Their spectroscopic properties indicate that they are structurally analogous to their well-known square-pl…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Kunio Esumi、Shintaro AKIYAMA、Tomokazu Yoshimura2003-07-26Langmuir
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTMultilayer Formation Using Oppositely Charged Gold- and Silver-Dendrimer NanocompositesKunio Esumi, Shintaro Akiyama, and Tomokazu YoshimuraView Author Information Department of Applied Chemistry and Institute of Colloid and Interface Science, Tokyo University of Science, Kagur…
Gold and Silver Nanoparticles Synthesis and ApplicationsPolymer Surface Interaction StudiesDendrimers and Hyperbranched Polymers
Christopher L. Lester、Shannon M. Smith、Colleen D. Colson 等 4 位作者2003-07-26Chemistry of Materials
Recently, a considerable amount of research has centered on the synthesis of nanostructured hydrogels via the polymerization of monomers in lyotropic liquid crystal (LLC) phases. Because of the potential for controllable nanostructures, these materials have exhibited tremendous potential for a variety of applications.…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsSurfactants and Colloidal Systems
John H. Harreld、Akira Esaki、Galen D. Stucky2003-07-26Chemistry of Materials
Copolymers of trimethoxysilylpropyl methacrylate (TMSPM) and methyl methacrylate (MMA) with varied composition and molecular weight were prepared as building blocks for transparent organic−inorganic hybrid materials. Thermally and chemically induced condensation of these network precursors after solvent evaporation re…
Synthesis and properties of polymersSilicone and Siloxane ChemistryPhotopolymerization techniques and applications
Nawal Kishor Mal、Masahiro Fujiwara、Yuko Tanaka 等 5 位作者2003-07-26Chemistry of Materials
A photoresponsive coumarin derivative was grafted on the pore outlet of Si−MCM-41. Irradiation of UV light longer than 310-nm wavelength to this coumarin-modified MCM-41 induced the photodimerization of coumarin to close the pore outlet with cyclobutane dimer. Guest molecules such as phenanthrene neither can enter nor…
Mesoporous Materials and CatalysisSupramolecular Self-Assembly in MaterialsCovalent Organic Framework Applications
Justin D. Holmes、Daniel Mark Lyons、Kirk J. Ziegler2003-07-25ChemInform
Abstract For Abstract see ChemInform Abstract in Full Text.
Catalytic Processes in Materials ScienceSemiconductor materials and devicesMesoporous Materials and Catalysis
Sa‐Ad Riyajan、Jitladda Sakdapipanich、Yasuyuki Tanaka2003-07-25Journal of Applied Polymer Science
Abstract The photodegradation of raw natural rubber and natural rubber compound film were studied using an artificial solar energy simulator. The properties of degraded rubber sheets containing benzophenone (BP) were determined by solution viscosity, 1 H‐NMR, and FTIR analyses. In the case of rubber compounds containi…
Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesPolymer composites and self-healing
P.C. Pándey、S. Upadhyay、S.K. Sharma2003-07-25Electroanalysis
Abstract A novel electrocatalytic biosensor for glucose is reported that incorporate encapsulation of tetrathifulvalene‐tetracyanoquinodimethane (TTF‐TCNQ) functionalized organically modified sol gel glass (ormosil). The new ormosil is made using palladium‐linked glycidoxypropyltrimethoxysilane precursor, trimethoxysi…
Electrochemical sensors and biosensorsConducting polymers and applicationsElectrochemical Analysis and Applications
Lynn J. Bloomfield、Herbert E. Huppert2003-07-25Journal of Fluid Mechanics
Results of an experimental study on the solidification and convection of a ternary solution of H $_2$ O–CuSO $_4$ –Na $_2$ SO $_4$ when cooled from a vertical side boundary are presented. Cooling and crystallization at a sidewall result in the formation of horizontal gradients of composition and temperature which are…
Material Dynamics and PropertiesSolidification and crystal growth phenomenaHeat and Mass Transfer in Porous Media
Aihua Liu、Yoshitomo Kashiwagi、Jun‐ichi Anzai2003-07-25Electroanalysis
Abstract Electrochemical properties of Fc‐PEM films have been studied by changing the chemical structure of the polymer chains and the content of Fc moiety in the film systematically. We have prepared a series of PEM films by a layer‐by‐layer deposition of polycations, Fc‐modified poly(allylamine) (Fc‐PAA) and poly(et…
Conducting polymers and applicationsPolymer Surface Interaction StudiesMolecular Junctions and Nanostructures
Meng‐Shung Yen、Ping‐Yuan Tsai2003-07-25Journal of Applied Polymer Science
Abstract The surface structure and physical properties of polyethylene glycol series polyurethane (PEG‐PU) membranes, in which were introduced hydrophobic polydimethylsiloxane (PDMS) component by the procedure of PU blending or of soft‐segment copolymerization, were studied in this investigation. In the case of the bl…
Advanced Polymer Synthesis and CharacterizationMicroplastics and Plastic PollutionPolymer composites and self-healing
Michela Zanetti、A. Pizzi2003-07-25Journal of Applied Polymer Science
Abstract Iminoamino methylene bases intermediates are obtained by the decomposition of hexamethylenetetramine (hexamine). These are stabilized by the presence of strong anions such as SO and HSO , that is, “hexamine sulfate.” The effect of hexamine sulfate was closely linked to the strong buffering action it has on MU…
Advanced Cellulose Research StudiesLignin and Wood ChemistryMaterial Properties and Processing
Pradeep K. Rai、Morton M. Denn、Charles Maldarelli2003-07-25Langmuir
The interfacial tension between two low-molar-mass biphenylcarbonitriles that exhibit liquid crystalline phases (4‘-pentyl-4-biphenylcarbonitrile and 4‘-octyl-4-biphenylcarbonitrile) and poly(dimethylsiloxane) was measured as a function of temperature using pendant drop tensiometry enhanced by video-image digitization…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsPickering emulsions and particle stabilization
Christian D. Santangelo、Randall D. Kamien2003-07-25Physical Review Letters
It is typical in smectic liquid crystals to describe elastic deformations with a linear theory when the elastic strain is small. In smectics, certain essential nonlinearities arise from the requirement of rotational invariance. By employing the Bogomol'nyi, Prasad, and Sommerfield decomposition and relying on boundary…
Geometric Analysis and Curvature FlowsLiquid Crystal Research AdvancementsAdvanced Differential Geometry Research
C.D. Berube、Mohammad Yazdanbakhsh、Sandro Gambarotta 等 4 位作者2003-07-25Organometallics
The transamination reaction of Sm{N(SiMe 3 ) 2 } 2 (THF) 2 with two dipyrrole ligands of formula RR‘C(α-C 4 H 3 NH) 2 (R = R‘ = Et; R = Me, R‘ = Ph) has been examined. The reactions in THF and under N 2 gave two similar tetranuclear dinitrogen complexes, {[Et 2 C(α-C 4 H 3 N) 2 Sm} 4 (THF) 2 ](μ-N 2 )·2THF and [{[(C 6…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Yoshiyuki Harada、Satoshi Hashimoto2003-07-25Physical review. B, Condensed matter
We have studied coating effects of bulk ZnO crystal by means of photoluminescence (PL) measurements. Bulk crystal surface of ZnO is once covered by the melt of alkali halide at high temperature and is coated with thin alkali halide crystal. At low temperature, band-edge PL intensity of the ZnO crystal coated with KCl…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsGa2O3 and related materials
Masayoshi Higuchi、Masanori Tsuruta、Hiroshi Chiba 等 5 位作者2003-07-25Journal of the American Chemical Society
The fourth generation of a dendritic polyphenylazomethine (DPA G4) has 2, 4, 8, and 16 imine groups in the first, second, third, and fourth shells, respectively (total, 30 imine groups). DPA G4 can trap 30 equiv of SnCl(2) molecules, because the imine group is complexed with SnCl(2) at a ratio of 1:1. During addition…
RNA Interference and Gene DeliveryChemical Synthesis and AnalysisDendrimers and Hyperbranched Polymers
Yongming Li、Zhimin Zheng、Caihong Xu 等 6 位作者2003-07-25Journal of Applied Polymer Science
Abstract A polysilazane containing iron (PSZI) was synthesized by the polycondensation of silazane lithium salts with FeCl 3 , and the structure of PSZI was characterized by IR, NMR, and elemental analyses. PSZI was used as an antioxidation additive for methylsilicone oil and rubber. The gelling time of silicone oil w…
Polymer Nanocomposites and PropertiesSynthesis and properties of polymersSilicone and Siloxane Chemistry
Carlo Massobrio、Alfredo Pasquarello2003-07-25Physical review. B, Condensed matter
Applying a first-principles scheme to liquid ${\mathrm{GeSe}}_{4},$ we show that the charge-charge structure factor does not present any feature at the location of the first sharp diffraction peak (FSDP), despite a clear FSDP in the concentration-concentration structure factor ${S}_{\mathrm{CC}}(k).$ The origin of thi…
Material Dynamics and PropertiesSpectroscopy and Quantum Chemical StudiesPhase-change materials and chalcogenides