Toshihiro Ohtake、Yasuyuki Takamitsu、Kaori Ito-Akita 等 8 位作者2000-09-29Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTLiquid-Crystalline Ion-Conductive Materials: Self-Organization Behavior and Ion-Transporting Properties of Mesogenic Dimers Containing Oxyethylene Moieties Complexed with Metal SaltsToshihiro Ohtake, Yasuyuki Takamitsu, Kaori Ito-Akita, Kiyoshi Kanie, Masahiro Yoshizawa, Tomohi…
Advanced Battery Materials and TechnologiesConducting polymers and applicationsLuminescence and Fluorescent Materials
Michael B. Korzenski、Ph. Lecoeur、B. Mercey 等 6 位作者2000-09-29Chemistry of Materials
The pulsed laser deposition (PLD) of Y 2 O 3 from a pure yttrium ablation target is performed for the first time and is shown to replace advantageously PLD from yttria targets. The films were grown on optical-quality MgO(100) and sapphire(0001) substrates, the former yielding films with poorer crystalline quality beca…
ZnO doping and propertiesSemiconductor materials and devicesElectronic and Structural Properties of Oxides
Massimo Gazzano、Maria Letizia Focarete、Christian Riekel 等 4 位作者2000-09-29Biomacromolecules
Two-dimensional spatially resolved microfocus X-ray diffraction has been used to investigate spherulites of pure bacterial poly(3-hydroxybutyrate) (PHB) and of a blend of natural and synthetic atactic PHB (a-PHB) crystallized at a relatively high temperature (Tc = 140 degrees C). Both samples investigated contained pr…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesMicroplastics and Plastic Pollution
Marc L. Mansfield2000-09-29Macromolecules
Additional results have been determined for a previously developed model of dendrimers constructed on the diamond lattice. Accurate results are presented through G = 8 generations, and some suggestive results at G = 9 and G = 11 are also reported. The hydrodynamic radius and intrinsic viscosity have been computed acco…
Polymer Surface Interaction StudiesLubricants and Their AdditivesDendrimers and Hyperbranched Polymers
K. Kasthuri Rangan、Pantelis N. Trikalitis、Mercouri G. Kanatzidis2000-09-29Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTLight-Emitting Meso-Structured Sulfides with Hexagonal Symmetry: Supramolecular Assembly of [Ge4S10]4- Clusters with Trivalent Metal Ions and Cetylpyridinium SurfactantK. Kasthuri Rangan, Pantelis N. Trikalitis, and Mercouri G. KanatzidisView Author Information Departm…
Mesoporous Materials and CatalysisCrystal Structures and PropertiesNanocluster Synthesis and Applications
Christophe Detrembleur、Mariarosa Mazza、X. Lou 等 8 位作者2000-09-29Macromolecules
New functional aliphatic polyesters were prepared by chemical modification of brominated copolyesters. Poly(ε-caprolactone)- co -poly(γ-(2-bromo-2-methylpropionate)-ε-caprolactone) copolymer was prepared and successfully converted into copolyester bearing methacrylate double bonds by dehydrohalogenation of the pendant…
biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysisDendrimers and Hyperbranched Polymers
Ricardo F. Aroca、R. E. Clavijo、Mathew D. Halls 等 4 位作者2000-09-29The Journal of Physical Chemistry A
The surface-enhanced Raman scattering (SERS) spectra for phthalimide (PIMH) vacuum evaporated, cast onto silver island films, and from colloidal silver are clearly identified with the formation of a phthalimide−silver complex (chemisorption). The phthalimide−silver complex (PIMAg) has been obtained from the PIMH potas…
Gold and Silver Nanoparticles Synthesis and ApplicationsElectrochemical Analysis and ApplicationsNanocluster Synthesis and Applications
Roberto Purrello、Antonio Raudino、Luigi Monsù Scolaro 等 6 位作者2000-09-29The Journal of Physical Chemistry B
In this paper we investigate the self-aggregation of tetracationic porphyrin meso -tetrakis( N -methylpyridinium-4-yl)porphinatocopper(II) (CuT4) onto a chiral polymeric matrix (polyglutamic acid, PG) as well as mixtures of tetracationic (CuT4) and tetraanionic, meso -tetrakis(4-sulfonatophenyl)porphine (H 4 TPPS), po…
Molecular Sensors and Ion DetectionSupramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine Chemistry
Xueping Jiang、Paula T. Hammond2000-09-29Langmuir
A new approach to creating patterned composite structures with layer-by-layer assembled thin films is introduced. In this approach, the top surfaces of layer-by-layer films are chemically patterned by the direct stamping of functional polymers on the surface. The resulting pattern is then used as a template for the fu…
Polymer Surface Interaction StudiesMolecular Junctions and NanostructuresNanofabrication and Lithography Techniques
Brian Bergman、Timothy W. Hanks2000-09-29Macromolecules
Electrochemically grown films of polyaniline, polypyrrole, polythiophene, and poly(ethylenedioxythiophene) were treated with alkane- and fluoroalkanethiols for 1−24 h. The resulting films showed surface energies and polarities similar to glass slides coated with monolayers of the corresponding alkyl- and fluoroalkylsi…
Advanced Sensor and Energy Harvesting MaterialsConducting polymers and applicationsAnalytical Chemistry and Sensors
Benjamin T. King、Josef Michl2000-09-29Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTThe Explosive "Inert" Anion CB11(CF3)12-Benjamin T. King and Josef MichlView Author Information Department of Chemistry and Biochemistry University of Colorado, Boulder, Colorado 80309-0215 Cite this: J. Am. Chem. Soc. 2000, 122, 41, 10255–10256Publication Date (Web):S…
Mass Spectrometry Techniques and ApplicationsCrystallography and molecular interactionsLuminescence and Fluorescent Materials
Long Ba、Wei Sang Li2000-09-29Journal of Physics D Applied Physics
Nanosize pore arrays have been prepared by the self-organization process of aluminium anodic oxidation. The symmetry of the pore configuration has been analysed by using fast Fourier transformation. For different anodization temperatures, it has been found that lower temperatures yielded higher symmetry. The linear re…
Photonic Crystals and ApplicationsAnodic Oxide Films and NanostructuresSmart Materials for Construction
M Chen、Z.L. Pei、Xin Wang 等 7 位作者2000-09-29Journal of Physics D Applied Physics
Contributions of acoustical deformation scattering, ion impurity scattering and grain boundary potential scattering to the conductivity of TCO films have been calculated in order to deduce the intrinsic limit of conductivity of TCO films regardless of precise details of the preparation procedure. The results indicate…
ZnO doping and propertiesSemiconductor materials and devicesThin-Film Transistor Technologies
M. Francesca Ottaviani、Farida Furini、Angela Casini 等 7 位作者2000-09-29Macromolecules
Poly(amidoamine) starburst dendrimers (SBDs) form stable supramolecular structures (complexes) with DNA and confer protection against degradation by nucleases. Such properties make SBDs excellent candidates for application in gene delivery strategies. Formation of supramolecular structures by two generations of SBDs,…
DNA and Nucleic Acid ChemistryRNA Interference and Gene DeliveryDendrimers and Hyperbranched Polymers
Evangelos Manias、H. Chen、Ramanan Krishnamoorti 等 6 位作者2000-09-29Macromolecules
The motion of confined polymers is measured experimentally between parallel, atomically smooth solid surfaces, separated by 2 nm. In particular, the kinetics of intercalation of monodispersed polystyrene in alkylammonium modified mica-type silicates were studied using X-ray diffraction. The kinetics of the neat polyme…
Concrete and Cement Materials ResearchPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation
M Kleemann、Martin Elsener、Manfred Koebel 等 4 位作者2000-09-29Industrial & Engineering Chemistry Research
The hydrolysis of isocyanic acid (HNCO) was investigated on various oxidic catalysts, including TiO 2, V 2 O 5 /TiO 2, and V 2 O 5 −WO 3 /TiO 2 . The kinetics were studied using powdered samples in a microreactor. The conversions of HNCO are high even at the high space velocities (10 6 h -1 ) and low temperatures (150…
Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesCatalysis and Oxidation Reactions
Carlo M. Carbonaro、Vincenzo Fiorentini、Fabio Bernardini2000-09-29arXiv
The E' center is a paradigmatic radiation-induced defect in SiO2 whose peculiar EPR and hyperfine activity has been known since over 40 years. This center has been traditionally identified with a distorted, positively-charged oxygen vacancy V_O+. However, no direct proof of the stability of this defect has ever been p…
Materials Science
Hui Hu、Dai-Jun Li、Jia-Lin Zhu 等 4 位作者2000-09-29arXiv
The size effects of an exciton in a nano-ring are investigated theoretically by using an effective-mass Hamiltonian which can be separated in terms of the center-of-mass and relative coordinates. The binding energy and oscillator strength of the ground state are calculated for two different ring radii as a function of…
Mesoscale and Nanoscale PhysicsMaterials Science
Hui Hu、Jia-Lin Zhu、Jia-Jiong Xiong2000-09-29arXiv
The effects of electron-electron interaction of a two-electron nanoring on the energy levels and far-infrared (FIR) spectroscopy have been investigated based on a model calculation which is performed within the exactly numerical diagonalization. It is found that the interaction changes the energy spectra dramatically,…
Mesoscale and Nanoscale PhysicsMaterials Science
E. P. K. Currie、Alexander B. Sieval、G. J. Fleer 等 4 位作者2000-09-29Langmuir
Polyelectrolyte brushes consisting of polystyrene−poly(acrylic acid) (PS−PAA) diblock copolymers were investigated experimentally using surface pressure isotherms and ellipsometry. The surface pressure π of the block copolymers at the air/water interface was measured as a function of the grafting density σ at various…
Surfactants and Colloidal SystemsPolymer Surface Interaction StudiesAnalytical Chemistry and Sensors