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。
Ab initio calculations are used to model small Au n nanoclusters and Au m SH clusters. The results for the Au6, Au8, and Au20 clusters demonstrate that the substitution of a SH group for a Au atom gives a stable cluster of the same geometry if the Au atom has an acute bond angle and a negative effective charge. The ex…
Silicone fluid has been applied in cable rejuvenation for decades to “cure” existing water trees. However, whether it inhibits future water tree initiation is not known. An electrical aging test has been carried out at 5 kV/mm (127 V/mil) based on a sample which includes semicon electrodes on both sides of the insulat…
An optically active isothiouronium-attached polythiophene 1 poly has been prepared for the first time by oxidative polymerisation of (S)-3-(3-(N-(2-(2-methoxyethoxy)ethyl)-N-(1-phenylethyl)-S-isothiouronio)propoxy)-4-methylthiophene 1 with FeCl3. The analysis carried out using gel-permeation chromatography allows us t…
We examine the dynamics of a two-dimensional drop on an inclined substrate vibrating vertically. The drop is assumed to be driven by its contact lines, while its shape is determined by a quasistatic balance of surface tension, gravity, and vibration-induced inertial force. It is shown that, if the dependence of the in…
Synthesis of boehmite (γ-AlOOH) nanorods were performed by using aluminum nitrate and sodium hydroxide as starting materials in conditions of controlled pH value of reaction mixture, temperature and holding time. X-ray diffraction, transmission electron microscope, high resolution transmission electron microscope, sel…
Based on the generalised source method, a new method for calculating the light diffraction on one-dimensional dielectric diffraction gratings with an arbitrary profile is proposed. The method is an alternative to the widely used Fourier modal method because it possesses the same possibilities in defining different gra…
In crystal growth of mineral species or different compositional members of a solid solution on one another, the degree of lattice mismatch at their interface affects the growth pattern of the precipitating mineral phase. Fast layer-by-layer growth of magnesian calcite on pure calcite (101̅4) substrates has been observ…
International audience
Abstract The oxidative degradation of the contracted carbaporphyrinoid 3,8,13,18‐tetraphenyldithiaethyneporphyrin, which contains an acetylene moiety embedded in the macrocyclic framework, was investigated. The light‐induced, regioselective cleavage of the macrocyclic ring was observed during exposure to dioxygen affo…
Abstract Size effects in pseudoelastic polycrystalline shape memory alloys are studied by considering a representative spherical laminated domain (subgrain) and its interfacial energy at three scales: at the subgrain boundaries, at the austenite–martensite interfaces, and at the twin boundaries. Two sources of interfa…
The spin Hamiltonian parameters (the anisotropic g factors and the hyperfine structure constants) and the local structure for the rhombic Cu2+center in rutile ( TiO2) are theoretically investigated using the formulas of these parameters for a 3d9ion in rhombically elongated octahedra. From the studies, the planar impu…
Abstract A general approach to construct one‐dimensional face‐to‐face alignment of porphyrin/fullerene nanowires has been developed. This system uses extended trans‐dihydroxotin(IV) porphyrin and trans‐dicarboxylate‐substituted [60]fullerenoacetic diacid compounds. The nanowires are arranged in regular one‐dimensional…
Porous nano-titanium dioxide (TiO(2)) particles with anatase framework were prepared by using an effective template of hydrophobic ionic liquid, i.e., N, N-bis [2-methylbutyl] imidazolium hexafluorophosphate ([PPim][PF(6)]). The nano-TiO(2) particles were characterized with TEM and BET, resulting in the distribution o…
amine groups using 4-trifluoromethyl-benzaldehyde (TFBA) as labeling molecule.
Abstract A series of π‐conjugated alternating copolymers consisting of Th‐ITN‐Th and p‐C6H2(OR)2 units were synthesized. XRD indicated that the copolymers assume an interdigitation packing mode, and UV‐Vis spectra revealed a strong tendency for self‐assembly. Upon molecular assembly of the copolymer, the UV‐Vis absorp…
An unsymmetrically substituted triphenylene, with two adjacent chloroethoxyethyl lateral flexible chains, was synthesized and characterized. Although this compound showed no mesomorphic behavior, it formed a donor–acceptor charge-transfer complex with 2,4,7-trinitrofluorenone (TNF). The resulting 1:1 complex has been…
We synthesized and characterized novel amphiphilic invertible polyurethanes (AIPUs) that had both hydrophilic (poly(ethylene glycol), PEG) and hydrophobic (polytetrahydrofuran, PTHF) constituents. Two different synthetic approaches produced macromolecules with random and alternating distributions of hydrophilic and hy…
Novel composite asymmetrical membranes based on poly(vinyl alcohol)-co-ethylene (EVAL) as the host material and new polyethers that contain azobenzene moieties in the side chain were prepared by dry-cast phase inversion after dissolving the azo polymers in tetrahydrofuran and EVAL in dimethylsulfoxide and subsequently…
We determine the high-frequency limiting shear viscosity, eta(infinity), in colloidal suspensions of rigid, uniformly porous spheres of radius a as a function of volume fraction phi and (inverse) porosity parameter x. Our study covers the complete fluid-state regime. The flow inside the spheres is modeled by the Debye…
In the present work we introduce the growth of 3D-superlattice nanotubes by a simple anodization technique. Highly defined self-organized, oxide tubes with modulated tube wall composition can be created that allow altering and tuning optical, electrical and chemical properties of such nanometer-size architectures. The…