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。
Structural optimization for heteronuclear clusters consisting of one alkali-metal ion and of up to 79 neutral rare gas atoms has been carried out. The basin-hopping Monte Carlo minimization method of Wales and Doye is used. Rare gas atoms interact with the Lennard-Jones potential, whereas the interaction between a neu…
Alkaline earth oxides are leading candidates as NO x ( x = 1, 2) sorbents; however, the understanding of adsorption and reaction of NO x on these surfaces is currently limited. In this paper, Mg(001) terrace cluster models and density functional theory (DFT) are used to characterize the adsorption properties of neutra…
The reactivity of NO x -adsorbing material, MnO x −CeO 2, toward H 2 has been studied in the presence of impregnated Pd catalysts by the use of micropulse reactions, in situ DRIFT spectroscopy, and chemisorption experiments. It was found that NO x adsorbed on Pd/MnO x −CeO 2 can be largely removed by micropulse H 2 in…
In the past 4 decades in Japan and Taiwan, many thermal explosions have been caused by methyl ethyl ketone peroxide (MEKPO) subjected to external heating including fire. Thermograms of commercialized MEKPO dimers were first screened by differential scanning calorimetry (DSC) to determine the heat of decomposition and…
The tritopic ligand 2poap self-assembles in the presence of Zn(NO(3))(2) and Fe(NO(3))(3) to form homoleptic [3 x 3] nonanuclear M(9) (M = Zn(II), Fe(III)) square grid structures and with Pb(ClO(4))(2) to form a dimerized linear trinuclear [Pb(3)](2) structure. Cl2poap and Cl2poapz form self-assembled homoleptic [3 x…
We report the effect of some electrolyte and nonelectrolyte additives on the crystallization of lysozyme and chymotrypsinogen A. In particular, the influence of glycerol and dimethyl sulfoxide on protein's solubility and the critical supersaturation for explosive nucleation has been studied. The two additives are foun…
The effect of high-temperature treatments on the structure and lithium mobility of the Li 3 x La 2/3 - x TiO 3 (0.03 ≤ x ≤ 0.167) series has been studied by HTXRD, Raman, NMR, and impedance spectroscopies. Room temperature XRD patterns of slowly cooled samples display a c -doubled perovskite with orthorhombic or tetra…
Novel intercalation compounds constructed from the common two-dimensional hydrogen-bond-supported layers and functional guests [(H(0.5)phz)(2)[Fe(CA)(2)(H(2)O)(2)].2H(2)O](n)(1), ([Fe(Cp)(2)][Fe(CA)(2)(H(2)O)(2)])(n)(2), ([Fe(Cp*)(2)][Fe(CA)(2)(H(2)O)(2)])(n)(3), and [(TTF)(2)[Fe(CA)(2)(H(2)O)(2)]](n)(4) (H(2)CA = chl…
This paper describes a synthesis of free-standing, 10−15-nm-thick polymer films of well-defined lateral size and shape. The three key elements of this procedure are (1) formation by microcontact printing (μCP) of a patterned, self-assembled monolayer (SAM) with hydrophobic regions (alkane-terminated) and adsorption-re…
The one-step electrostatic complexation, reduction of aqueous chloroaurate ions and capping of the gold nanoparticles thus formed by hexadecylaniline Langmuir monolayers, is described. This process leads to the formation of highly oriented gold nanoribbons strongly bound to the Langmuir monolayer (images alongside) th…
ADVERTISEMENT RETURN TO ISSUEPREVNoteSynthesis and Characterization of CdS Nanorods via Hydrothermal MicroemulsionPeng Zhang and Lian GaoView Author Information State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People'…
New lanthanide complexes of 3-hydroxypicolinic acid (HpicOH) were prepared: [Ln(H 2 O)(picOH) 2 (μ-HpicO)]·3H 2 O (Ln = Eu, Tb, Er). The complexes were characterized using photoluminescence, infrared, Raman, and 1 H NMR spectroscopy, and elemental analysis. The crystal structure of [Eu(H 2 O)(picOH) 2 (μ-HpicO)]·3H 2…
A novel nanostructure of Ni nanotubes encapsulated in carbon nanotubes has been obtained via the pyrolysis of C2H2 on an array of Ni nanotubes in an alumina membrane support and a possible mechanism has been proposed.
The incompletely condensed hydroxysilsesquioxanes R 7 Si 7 O 9 (OH) 3 and R 7 Si 7 O 9 (OH) 2 OSiMePh 2 (R = c -C 5 H 9, c -C 6 H 11 ) have been used to form Lewis and Brønsted acidic boron and gallium silsesquioxane compounds. Treatment of ( c -C 5 H 9 ) 7 Si 7 O 9 (OH) 3 with BI 3 in the presence of an amine yielded…
Abstract Poly( p ‐oxybenzoyl) (POB) crystals are prepared by the polymerization of p ‐acetoxybenzoic acid ( p ‐ABA) at 320°C in various solvents to clarify the influence of miscibility between oligomer and solvent on the morphology as well as the size of the crystal. Concerning the morphology, whiskers are formed in l…
Abstract The crystallization induced by compressed CO 2 was investigated for rubbery ethylene‐vinyl acetate copolymer (EVA) containing various amounts of vinyl acetate (VA). The induction of crystallization was demonstrated by appearance of shoulder‐like differential scanning calorimetry (DSC) endotherms at temperatur…
We studied the photoluminescence taken at 5 K from ${\mathrm{Z}\mathrm{n}\mathrm{O}/\mathrm{M}\mathrm{g}}_{0.27}{\mathrm{Zn}}_{0.73}\mathrm{O}$ quantum wells on lattice-matched substrates which were grown by laser molecular-beam epitaxy. Well-width dependence of the coupling between localized excitons and longitudinal…
Abstract A series of photocrosslinkable, side‐chain, second‐order nonlinear optical (NLO) poly(ester imide)s (PEIs) based on a chromophore‐containing dianhydride, 2,2′‐{4‐[(4‐nitrophenyl)‐azo]phenyl}iminobis(ethyl benzene‐1,2‐dicarboxylic acid anhydride‐4‐carboxylate), benzophenone‐3,3′,4,4′‐tetracarboxylic dianhydrid…
Abstract A reactive extrusion process for the functionalization of polypropylene with maleic anhydride in the presence of supercritical carbon dioxide was studied. Supercritical carbon dioxide was used in this reactive extrusion system to reduce the viscosity of the polypropylene melt phase by forming a polymer–gas so…
Polypyrrole microstructures with unusual morphologies have been synthesized by direct electrochemical oxidation of pyrrole in beta-naphthalenesulfonic acid aqueous solution.