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。
In the title complex mol-ecule, [Ti(C(10)H(15))(2)I], the paramagnetic Ti(III) atom is coordinated by two penta-methyl-cyclo-penta-dienyl (Cp*) ligands and one iodide ligand. The two Cp* ligands are in a staggered orientation. The coordination geometry at the titanium atom can be described as distorted trigonal-planar.
Spinel ferrite flakes are prepared for use as fillers in electromagnetic (EM) composites. EM attenuation composites with the flaky fillers exhibit greatly enhanced high-frequency magnetic properties and attenuation properties. The complex permeability, μ'r,oand μ"r,max, is enhanced by above 300%, and the relative atte…
It is widely accepted that carbon nanotubes (CNTs) consist of coaxially curved graphene layers. However, some CNTs, synthesized at relatively low temperature, are self-organized into rod- or plate-shaped mesostructural units with periodic structure. These findings give another point of view on the formation mechanism…
A series of 2,7-diaryl-9-cycloheptatrienylidene fluorenes (9-CHFs) were synthesized, and their structures were confirmed by spectroscopic methods. By cooperation with cupric chloride in tetrahydrofuran, 9-CHFs exhibited emission enhancement at locally excited (LE) band and aggregation induced emission at lower energy…
P.J. Nugenta, J.A. Smerdona, R. McGratha, M. Shimodab, C. Cuib, A.P. Tsaibc & H.R. Sharmaa* a Surface Science Research Centre and Department of Physics , The University of Liverpool , Liverpool , L69 3BX , United Kingdom b National Institute for Materials Science , 1-2-1 Sengen, Tsukuba , Ibaraki , 305-0047 , Japan c…
Abstract Thermoelectric modules have been the subject of recent scientific interest, in part due to their remarkable potential applications, such as waste heat recovery systems for automotive applications, industrial thermal power stations, etc. Based on their superior thermal stability in air, oxides have been consid…
Shell-like free volume theory for multicomponent polymeric systems was developed. Molecular-diffusive motion in polymeric systems is due to a large number of microscopic molecular collisions with adjacent molecules. To embody this idea, a shell-like free volume is defined as the free space surrounding the penetrant mo…
We have investigated the magnetic properties of transition-metal oxide superlattices with broken inversion symmetry composed of three different antiferromagnetic insulators, $[{\text{NdMnO}}_{3}/{\text{SrMnO}}_{3}/{\text{LaMnO}}_{3}]$. In the superlattices studied here, we identify the emergence of a relaxor, glassyli…
Local texture and microstructure was investigated to study the deformation mechanisms during equal channel angular extrusion of a high purity nickel single crystal of initial cube orientation. A detailed texture and microstructure analysis by various diffraction techniques revealed the complexity of the deformation pa…
CuMo0 .9 W 0.1 O 4 oxide is known to exhibit two allotropic forms (α and γ forms) linked by a first-order phase transition that can be induced by pressure and/or temperature. In this work, we show that this α → γ phase transition (with a chromic effect from green to brown color) can also take place at 25 °C by a simpl…
A unique mechanism responsible for enhancing the autohesive tack strength of ethylene propylene diene rubber (EPDM) was elucidated by studying the interfacial strength of an unvulcanized EPDM elastomer joint in the presence of nanoclay. The tack strength significantly increased with nanoclay concentration up to 4 part…
Pore and wall structures for ordered mesoporous crystalline materials can be obtained from electron crystallographic reconstruction based on transmission electron micrographs (see picture; left). Curvature and surface properties are then used to determine the mesostructures in a self-consistent manner within the data…
We have investigated the source of errors in ab initio calculations of thermal properties of the magnetic metals Fe and Ni and their dependence on the form of the exchange and correlation functional. We used density-functional theory and density-functional perturbation theory together with the quasiharmonic approximat…
The structure of decagonal Al–Ni–Co, superstructure type I (the so-called Edagawa phase), was refined in physical space. A statistical approach was used to calculate the structure factors based on a rhombic Penrose tiling, with tile edge length 12.1 Å, as reference frame. A total number of 691 parameters was refined a…
Laterally epitaxial single crystalline Ag2Te nanowires (NWs) are synthesized on sapphire substrates by the vapor transport method. We observed the phase transitions of these Ag2Te NWs via in situ transmission electron microscopy (TEM) after covering them with Pt layers. The constrained NW shows phase transition from m…
In order to increase the anticounterfeiting performance of interference security image structures, we propose to implement an active component using an electrochromic material. This novel device, based on metamerism, offers the possibility of creating various surprising optical effects, it is more challenging to dupli…
We demonstrate the feasibility of controlling the density of ZnO nanorod arrays by using mixed self-assembled monolayers (SAMs) composed of molecules with hydrophobic methyl end groups and hydrophilic amine end groups. As the concentration of amine groups in the mixed SAMs increased, the density of ZnO nanorods grown…
Abstract A variety of alkynylazinium cationic (D‐π‐A + ) chromophores were prepared in good yields by the reaction of bromoazinium (pyridinium, quinolinium, and isoquinolinium iodides) with alkynes under Sonogashira conditions. The analysis of the experimentally recorded spectra is supported by quantum chemical calcul…
The hollow poly(divinylbenzyl sulfonic acid) (P(DVB-SO3H)) polyelectrolyte (PE) microspheres with a shell-in-shell structure were prepared by selective etching of the silica core and third-layer with hydrofluoric acid from the corresponding SiO2/P(DVB-SO3H)/SiO2/P(DVB-SO3H) tetra-layer PE microspheres, which were synt…
Single crystals of magnesium tin oxyborate, Mg 5 SnB 2 O 10 (Mg 5 SnO 4 (BO 3 ) 2 ), were prepared at 1350 °C in air, using B 2 O 3 as a flux. They were colorless and transparent with needlelike or columnar shapes. X-ray diffraction analysis of the single crystals revealed that Mg 5 SnB 2 O 10 crystallizes in the tric…