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。
Abstract Three new copper( II ) complexes of formula [Cu(2,2′‐bpy)(Phmal)(H 2 O)]·2H 2 O ( 1 ), [{Cu(2,2′‐bpym)(Phmal)}] n ( 2 ) and [{Cu(phen)(Phmal)}] n ·3 n H 2 O ( 3 ) (Phmal = phenylmalonate; 2,2′‐bpy = 2,2′‐bipyridine; 2,2′‐bpym = 2,2′‐bipyrimidine; phen = 1,10‐phenanthroline) have been prepared and their struct…
A novel graft copolymer was synthesized via graft copolymerization of an inimer, 2-(2-bromoisobutyryloxy)ethyl acrylate (BIEA), with ozone-pretreated poly(vinylidene fluoride) (PVDF) (the PVDF- g -PBIEA copolymer). Porous membranes could be fabricated from the copolymer solution by phase inversion. The BIEA polymer (P…
Effects of the chemical environment on devices utilizing organic semiconductors are discussed. It is convenient and justified to use silicon-based insulated gate field-effect transistors (IGFET) as the yardstick by which the performance of organic field-effect transistors (OFET) are measured. However, the same issues…
Nucleation of vanillin (VAN) in 2-propanol/water in the presence of additives, viz., acetovanillone (AVA), ethyl vanillin (EVA), guaiacol (GUA), guaethol (GUE), 4-hydroxyacetophenone (HAP), 4-hydroxybenzaldehyde (HBA), and vanillic acid (VAC) is investigated experimentally and by molecular simulations. In the experime…
Second- and third-harmonic generation in single-walled carbon nanotube films is experimentally investigated with the fundamental 1064nm radiation from a Q-switched Nd:YAG laser. Measurements were performed both on commercially available carbon nanotubes and on samples of carbon nanotubes grown with a catalyst-free met…
We report here a direct generation of measurable voltages and currents when a gas flows over a variety of solids even at the modest speed of a few meters per second. The underlying mechanism is an interesting interplay of Bernoulli's principle and the Seebeck effect: Pressure differences along streamlines give rise to…
Using plasma-enhanced chemical vapor deposition (PECVD) based on fluorine chemistry, the limitations hindering the practical use of cubic boron nitride (cBN) films in mechanical applications have been overcome. The CVD method presented is characteristic with (a) the direct cBN growth on diamond without soft, noncubic…
Sodium naproxen is an antiinflammatory nonsteroidal drug used in the treatment of rheumatoid and arthritic diseases. Three pseudopolymorphic forms have been reported in the literature, along with characterizations of anhydrous and dihydrated forms. In the present work, the monohydrated form of sodium naproxen was prep…
Abstract Samples of oxidized cellulose (OC) with various carboxyl contents and degrees of crystallinity were obtained by the oxidation of native and mercerized cellulose with a solution of nitrogen(IV) oxide in CCl 4 . A detailed characterization of these OC samples was performed. The effect of oxidation conditions (c…
Cobalt(II) meso-tetrakis(4-hexadecylamidophenyl)porphyrin self-assembles in ethanol/1-propanol 2/1 (v/v) to form a rodlike micelle with nanoscale dimensions; the nanorod is a face-to-face aggregate having a hydrophobic corona around a polar core and is thus characterized as a reverse micelle.
A new type of protective microcontainer, capable of preventing oxidation of encapsulated compounds by low molecular weight oxidizing agents, was demonstrated. These microcontainers (microcapsules) are hollow spheres with the shell made of layer-by-layer assembled polyelectrolytes with an engineered outermost layer. Th…
The polarization clusters existing in both the ferroelectric and the paraelectric phase of $\mathrm{B}\mathrm{a}\mathrm{T}\mathrm{i}{\mathrm{O}}_{\mathrm{3}}$ are directly observed and characterized for the first time by a picosecond soft x-ray laser speckle technique. These dynamic clusters appear continuously across…
The interaction of water and methanol with MgO samples with different distributions of oxide ions of low coordination has been investigated by physical techniques, particularly in situ photoluminescence. First, the three photoluminescence fingerprints of oxide ions vs their coordination number have been obtained for s…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTExploiting an Imidazole-Functionalized Polyfluorene Derivative as a Chemosensory MaterialXing-Hua Zhou, Ji-Chao Yan, and Jian PeiView Author Information The Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministr…
Abstract Kinetically controlled ring‐expansion polymerizations (REPs) are defined syntheses generating cyclic oligomers and polymers without linear intermediates and without equilibration reactions. This review reports syntheses of cyclic metal alkoxides and their use as initiators for REPs of lactones, cyclic diester…
We present a realization of carbon nanotube alignment. Surface acoustic waves are applied to a multiwalled carbon nanotube suspension and the lateral piezoelectric field of the standing wave aligns the carbon nanotubes with an angle of 25° to 45° on LiNbO3 with respect to the direction of wave propagation. This angle…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTGradient Mixed Brushes: "Grafting To" ApproachLeonid Ionov, Alexander Sidorenko, Manfred Stamm, Sergiy Minko, Bogdan Zdyrko, Viktor Klep, and Igor LuzinovView Author Information Institute for Polymer Research Dresden, Dresden, Germany Chemistry Department, Clarkson University,…
A novel series of silicon(IV) phthalocyanines substituted axially with one or two 1,3-bis(dimethylamino)-2-propoxy group(s) have been prepared by ligand substitution and alkoxy exchange reactions. Two dicationic and tetracationic phthalocyanines have also been prepared by methylation of two of these compounds. The non…
Al-doped Zn1−xMgxO films have been deposited on glass substrates at a substrate temperature of 200°C by a pulsed laser deposition system. A resistivity of 3×10−4Ωcm was obtained at x=0.06. Film resistivity was found to increase with further increases in Mg composition. The maximum band gap of films with a resistivity…
The influence of the electronic structure and the lattice constant on hydrogen absorption in bulk Pd 3 M 1 (M = Cd, Ag, Au, Pd, Cu, Ni, Pt, Pb, Sn, Fe, Rh, Ru) has been studied by density-functional calculations. We have assumed face-centred cubic structure for all the alloys, and hydrogen has been placed in the octah…