George Maroulis、Demetrios Xenides、Uwe Hohm 等 4 位作者2001-11-01The Journal of Chemical Physics
Refractive index (RI) measurements, depolarized collision-induced light (CILS) scattering and ab initio quantum chemical calculations are used to determine the dipole (α), dipole–quadrupole (A), and dipole–octopole polarizability (E) of adamantane, C10H16. For this molecule of symmetry group Td the three polarizabilit…
Advanced Chemical Physics StudiesNonlinear Optical Materials ResearchAtmospheric Ozone and Climate
Elena Cariati、Renato Ugo、F. Cariati 等 7 位作者2001-11-01Advanced Materials
Huge second harmonic generation (SHG) activityis displayed by the new hybrid inorganic–organic material [DAMS*][Cu5I6] (see Figure). Ab-initio XRPD structure determination explains this through the presence of cationic guest J-aggregates between Cu-defective anionic host CuI slabs. Thermal stability and thin-film suit…
Crystallography and molecular interactionsPorphyrin and Phthalocyanine ChemistryNonlinear Optical Materials Research
Yasushi Kaneko、Yasuomi Arichika、Tsutomu Ishimasa2001-11-01Philosophical Magazine Letters
A new icosahedral quasicrystal has been found in Zn 85-x Mg x Sc 15 ( x = 3,4,5) alloys annealed at 922K for 5-100h. Electron diffraction and powder X-ray diffraction experiments indicate that this quasicrystal has a primitive icosahedral quasilattice (P type) and a six-dimensional lattice parameter a 6D =0.7115nm. Th…
Quasicrystal Structures and PropertiesMineralogy and Gemology Studies
Gerald A. Hebbink、David N. Reinhoudt、Frank C. J. M. van Veggel2001-11-01European Journal of Organic Chemistry
The luminescence of lanthanide(III) ions emitting in the near-infrared region is ideally suited for telecommunications applications, and a number of applications have been developed. These are in general based on inorganic matrices, but polymer-based matrices would have advantages in device fabrication. In organic mat…
Luminescence Properties of Advanced MaterialsAdvanced MRI Techniques and ApplicationsLanthanide and Transition Metal Complexes
Mitsuko Takada、Masataka Tanigaki、Masahiro Ohshima2001-11-01Polymer Engineering and Science
Abstract When CO 2 dissolves into a polypropylene (PP), its crystallization kinetics changes These changes were studied, in the expectation that the information would reflect on the behavior of other semicrystalline polyolefins. The isothermal crystallizatior rate of the PP‐CO 2 solutions was measured using a high‐pre…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesPolymer Foaming and Composites
Yves Poirier、Nadine Erard、Jean MacDonald-Comber Petétot2001-11-01Applied and Environmental Microbiology
Medium-chain-length polyhydroxyalkanoates (PHAs) are polyesters having properties of biodegradable thermoplastics and elastomers that are naturally produced by a variety of pseudomonads. Saccharomyces cerevisiae was transformed with the Pseudomonas aeruginosa PHAC1 synthase modified for peroxisome targeting by the add…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionBiopolymer Synthesis and Applications
W. Wong‐Ng、Howard F. McMurdie、C. R. Hubbard 等 4 位作者2001-11-01Journal of Research of the National Institute of Standards and Technology
The Research Associateship program of the Joint Committee on Powder Diffraction-International Centre for Diffraction Data (JCPDS-ICDD, now known as the ICDD) at NBS/NIST was a long standing (over 35 years) successful industry-government cooperation. The main mission of the Associateship was to publish high quality x-r…
Crystal Structures and PropertiesMetal Extraction and BioleachingX-ray Diffraction in Crystallography
Kyu‐Nam Kim、Hyungsu Kimm、Jae‐Wook Lee2001-11-01Polymer Engineering and Science
Abstract Polypropylene (PP)‐clay composites were prepared by melt mixing in an intensive mixer. Three grades of PPs with different melt viscosities were employed to investigate mixing characteristics and phase structure of the composites with various clays that belong to organically modified montmorillonite (org‐MMT).…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesDielectric materials and actuators
Sinan Battah、Cheng-Ean Chee、Hiroaki Nakanishi 等 6 位作者2001-11-01Bioconjugate Chemistry
Using a convergent growth approach, a series of novel 5-aminolevulinic acid (ALA)-containing dendrimers have been synthesized. In these molecules, ALA residues are attached to the periphery by ester linkages, with amide bonds connecting the dendrons. Three first-generation dendrimers, bearing either 6 or 9 ALA residue…
Photodynamic Therapy Research StudiesClick Chemistry and ApplicationsDendrimers and Hyperbranched Polymers
Marc Reinholdt、Jocelyne Brendlé、L. Delmotte 等 7 位作者2001-11-01European Journal of Inorganic Chemistry
EXAFS spectroscopy, combined with X-ray powder diffraction, chemical and thermal analysis, scanning electronic microscopy, 29Si, 27Al, and 19F MAS NMR spectroscopy, are used in the structural analysis of montmorillonites, synthesised in an acidic fluoride medium. Hydrothermal synthesis performed under mild conditions…
Polymer Nanocomposites and PropertiesClay minerals and soil interactionsLayered Double Hydroxides Synthesis and Applications
Christian Mohr、Peter Claus2001-11-01Science Progress
Introduction In the last few years, there has been growing interest in nanosized structures in the range 1 to about 20 nanometers in many different fields of research. This is also the size of metal particles usually used in heterogenous catalysis. In general, such nanoparticles of metals like palladium, ruthenium, ni…
Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsNanomaterials for catalytic reactions
Stéphanie Perret、Christine Merle、Simonetta Bernocco 等 8 位作者2001-11-01Journal of Biological Chemistry
Human unhydroxylated homotrimeric triple-helical collagen I produced in transgenic plants was used as an experimental model to provide insights into the role of hydroxyproline in molecular folding and fibril formation. By using chemically cross-linked molecules, we show here that the absence of hydroxyproline residues…
Enzyme Production and CharacterizationCollagen: Extraction and CharacterizationBone and Dental Protein Studies
Kei Watanabe、Minoru Fujii、Shinji Hayashi2001-11-01Journal of Applied Physics
Photoluminescence (PL) properties of SiO2 films containing Si nanocrystals (nc-Si) and Er were studied. The average size of nc-Si was changed in a wide range in order to tune the exciton energy of nc-Si to the energy separations between the discrete electronic states of Er3+. PL from exciton recombination in nc-Si and…
Semiconductor materials and devicesThin-Film Transistor TechnologiesSilicon Nanostructures and Photoluminescence
Sherry L. Morissette、Jennifer A. Lewis、Paul G. Clem 等 5 位作者2001-11-01Journal of the American Ceramic Society
Lead niobium zirconate titanate (PNZT) pastes with tailored rheological properties have been developed for direct‐write fabrication of thick‐film capacitor elements in highly integrated, multifunctional electroceramic devices. Such pastes exhibited pseudoplastic behavior with a low shear apparent viscosity of roughly…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisElectrical and Thermal Properties of Materials
C. Gindorf、L. Singheiser、K. Hilpert2001-11-01Steel Research
Fe,Cr base alloys protected by Cr 2 O 3 base oxidation scales are candidate materials for the metallic interconnect of solid oxide fuel cells (SOFC). The operating temperatures of such cells range between 800 and 950 °C. Cr 2 O 3 base oxide scales are necessary since they show sufficient electrical conductivity unlike…
Advancements in Solid Oxide Fuel CellsCatalysts for Methane ReformingHigh-Temperature Coating Behaviors
P.A. Angeli Mary、S. Dhanuskodi2001-11-01Crystal Research and Technology
Bis Thiourea Zinc Chloride (BTZC) a new semiorganic nonlinear optical material has been synthesized. The solubility studies have been carried out in the temperature range 30°- 55°C. Single crystals of BTZC have been grown by slow evaporation of saturated aqueous solution at room temperature. The lattice parameters of…
Nonlinear Optical Materials ResearchCrystallization and Solubility Studies
Владимир А. Наслузов、Vladimir V. Rivanenkov、A. B. Gordienko 等 6 位作者2001-11-01The Journal of Chemical Physics
Adsorption complexes of palladium atoms on Fs, Fs+, Fs2+, and O2− centers of MgO(001) surface have been investigated with a gradient-corrected (Becke–Perdew) density functional method applied to embedded cluster models. This study presents the first application of a self-consistent hybrid quantum mechanical/molecular…
Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceMagnesium Oxide Properties and Applications
Hui‐Zhong Kou、Song Gao、Jing Zhang 等 7 位作者2001-11-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTUnexpected Assembly of a Unique Cyano-Bridged Three-Dimensional Cu3Cr2 FerromagnetHui-Zhong Kou, Song Gao, Jing Zhang, Ge-Hui Wen, Gang Su, R. K. Zheng, and X. X. ZhangView Author Information State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU-H…
Magnetism in coordination complexesMagnetic Properties and Synthesis of FerritesAdvanced Condensed Matter Physics
Bin Zhao、Hui Hu、Sandip Niyogi 等 8 位作者2001-11-01Journal of the American Chemical Society
We report an improved chromatographic purification of soluble single-walled carbon nanotubes (s-SWNTs) using gel permeation chromatography. Three fractions are separated by gel permeation chromatography, and the first fraction contains 74% of the s-SWNTs as detected by atomic force microscopy and UV and near-infrared…
Carbon Nanotubes in CompositesFullerene Chemistry and ApplicationsNanopore and Nanochannel Transport Studies
Akihiko Fujiwara、Yasuyuki Matsuoka、Hiroyoshi Suematsu 等 9 位作者2001-11-01Japanese Journal of Applied Physics
We have observed the photoconductive response of film samples of single-walled carbon nanotubes for the first time. Two peaks in the photoconductivity excitation spectra around 0.7 and 1.2 eV are observed at room temperature, which can be interpreted as a photocurrent in semiconducting nanotubes. At a low temperature,…
Carbon Nanotubes in CompositesGraphene research and applicationsMechanical and Optical Resonators