Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Water-soluble CS with different DS were synthesized by homogeneous conversion of cellulose (microcrystalline cellulose and spruce sulfite pulp) with different sulfating agents in the ionic liquids BMIMCl, AMIMCl and EMIMAc. N,N-Dimethylformamide was used as a dipolar aprotic co-solvent in order to improve the miscibil…
The chemical structures and electronic structures at conjugated polyelectrolyte/Au interfaces demonstrate that conjugated polyelectrolytes with identical backbones but different pendant charges and charge-compensating ions exhibit different electronic properties. This finding shows that counterions and backbone charge…
A fourth wheel: Two sets of bifunctional AB(2)C dendrimers having internal acetylene/azides and external hydroxy groups were constructed utilizing benign synthetic protocols. An in situ postfunctionalization strategy was successfully carried out to illustrate the chemoselective nature of these dendrimers. The dendrime…
The discovery in February 2008 of superconductivity with the transition temperature about 26 K in fluorine-doped oxyarsenide LaO1–xFxFeAs stimulated numerous studies of superconducting and other physical properties of this and related materials, resulting in a new family of high-temperature (Tc ~ 26–55 K) superconduct…
Biocompatibility of PLLA and stereocomplexed PLA nanofibers was evaluated by subcutaneous implantation in rats for 4-12 weeks. Characterization of the nanofibers was performed by GPC, SEM, wide-angle X-ray diffraction, and optical microscopy of hematoxylin-eosin stained ultrathin sections of explanted nanofibers. Ster…
Survival of the fittest: Self-assemblies made of dynamic block copolymers (dynablocks) can self-replicate by catalyzing the formation of their own building blocks. Moreover, in competition experiments, the differential thermodynamic stabilities and autocatalytic efficiencies of these self-assemblies lead to sigmoid gr…
Graphene devices require electric contacts with metals, particularly with gold. Scanning tunneling spectroscopy studies of electron local density of states performed on mono-, bi- and tri- graphene layer deposited on metallic conductive Au/Cr/SiO2/Si substrate shows that gold substrate causes the Fermi level shift dow…
Synthesis of tri functional electrically conducting, optical and magnetic nano-chain of Nicore-Aushell has been discussed here. Our Investigation indicates that such material attached with biomolecule DNA in chain form will have great potentiality in medical instrument and bio computer device.
We investigate structural parameters, i.e., bond lengths and bond angles of isolated uncapped zigzag single-wall nanotubes in detail. The bond lengths and bond angles are determined for several radii tubes by using a theoretical procedure based on the helical and rotational symmetry for atom coordinates generation, co…
We investigate the feasibility of high performance scientific computation using cloud computers as an alternative to traditional computational tools. The availability of these large, virtualized pools of compute resources raises the possibility of a new compute paradigm for scientific research with many advantages. Fo…
Monodisperse Fe 3 O 4 hollow spheres with average diameter of 400 nm and shell thickness of 60 nm were prepared through a one-pot solvothermal process with the presence of NH 4 Ac as the structure-directing agent, and a novel gas-bubble-assisted Ostwald ripening process was proposed to explain the formation of hollow…
We present a review of basic experimental facts on the new class of high - temperature superconductors - iron based layered compounds like REOFeAs (RE=La,Ce,Nd,Pr,Sm...), AFe_2As_2 (A=Ba,Sr...), AFeAs (A=Li,...) and FeSe(Te). We discuss electronic structure, including the role of correlations, spectrum and role of col…
A new series of high-performance fluorophores named Keio Fluors (KFL), which are based on borondipyrromethene (BODIPY), are reported. The KFL dyes cover a wide spectral range from the yellow (547 nm) to the near-infrared (NIR, 738 nm) region, and their emission wavelength could be easily and subtly controlled based on…
G“Ru”vy reactivity: The new ruthenium(II) complex having cooperative PNP enamido ligand A reversibly activates two equivalents H2 under reversible hydrogenation of amido (B) and amino (C) complexes. B exhibits the highest reported activities in the dehydrocoupling of ammonia–borane.
A single-crystalline graphene monolayer is grown on a Ru(0001) surface by thermal annealing of a ruthenium single crystal containing carbon. The layer is highly ordered, continuous, and exhibits perfect crystallinity, with good long-range order on the order of millimeters (see figure). These findings offer high-qualit…
The strain path dependence of the compressive flow behavior of cast AZ31 magnesium alloy was investigated. Biaxial compression tests with linear strain paths were conducted using a unique biaxial compression device. It was found that the equivalent stress-strain relations varied according to the strain paths. The work…
In the present study, fast isothermal stabilization processes for rayon precursor fabrics were performed at <TEX>$350^{\circ}C$</TEX> and <TEX>$400^{\circ}C$</TEX> within 3 minutes and the chemical and physical characteristics of the stabilized fabrics were investigated. In addition, rayon precursor fabrics were pre-t…
Single crystals of pure and Lanthanum doped L- arginine acetate (LAA) were grown successfully by slow evaporation technique. The grown crystals were confirmed by X-ray powder diffraction studies. The pure and doped crystals were characterized by Fourier Transform Infrared (FT-IR) and UV-Vis-NIR studies. It was found t…
Copper oxide nanorods with average diameters and lengths of ca. 8 nm and 400 nm, respectively, have been prepared by a simple onestep solid-state reaction in the presence of various surfactant micelles. The effect of three different surfactants viz., SDS, CTAB and Triton X-100 and their critical micellar concentration…
Abstract The heteronuclear polymeric complex, [Zn(teta)Ni(μ‐CN) 2 (CN) 2 ] n (teta: triethylenetetramine), was synthesized and characterized by elementel analysis, FT‐IR spectroscopy, thermal analysis and single crystal X–ray diffraction techniques. The complex crystallizes in the monoclinic system, space group P 2 1…