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。
The synthesis of a photoswitchable piperidine base, carrying a monochlorosilane anchoring group, and its immobilization on silica gel, mimicking an oxide surface, is reported. Efficient photoswitching between the E and Z isomers of the azobenzene photochrome was demonstrated for the immobilization precursor in solutio…
Abstract By utilizing the chiral terpyridyl‐type ligand L(–) [L =“dipineno”‐(4,5:4″,5″)‐fused 2,2′:6′,2″‐terpyridine or 2,6‐bis(7,7‐dimethyl‐5,6,7,8‐tetrahydro‐6,8‐methanoisoquinolin‐3‐yl)pyridine], two novel Eu III complexes with the formula [Eu(tta) 3 L](C 3 H 6 O) · 0.5(H 2 O) ( 1 ) and [Eu(bta) 3 (L)](C 3 H 6 O)(…
The thermal stability of SAMs generated from the adsorption of n-octadecanethiol (n-C18), 2-hexadecylpropane-1,3-dithiol (C18C2), 2-hexadecyl-2-methylpropane-1,3-dithiol (C18C3), and 1,1,1-tris(mercaptomethyl)heptadecane (t-C18) on colloidal gold and evaporated "flat" gold was investigated. The optical extinction of t…
Abstract Aiming at the formation of inorganic/organic hybrid gold nanoparticle superstructures, the design and synthesis of acetylene‐monofunctionalized multidentate thioether ligands and their ability to stabilize gold nanoparticles are presented. Rather monodisperse gold particles with diameters of about 1 nm are ob…
Characteristic features of the synthesis of particles, fibres (wires), tubes, films and bulk materials based on nanocrystalline and amorphous silicon carbide are considered. The role of size effects in the structure, composition and properties of these systems is analyzed. The potential application fields of nano-size…
The oxidation of the Pd(110) surface has been studied from ultrahigh vacuum up to atmospherical pressures by combining scanning tunneling microscopy, low-energy electron diffraction and high-resolution core-level spectroscopy with in situ surface x-ray diffraction, and density-functional theory calculations. Under in…
We propose a five-band tight-binding model for the Fe-As layers of iron pnictides with the hopping amplitudes calculated within the Slater-Koster framework. The band structure found in density-functional theory, including the orbital content of the bands, is well reproduced using only four fitting parameters to determ…
The first structurally authenticated example of coordinated polymer featuring homometallic pillared-trilayer structure, [Co(3)(ina)(2)(pico)(2)(H(2)O)(2)](n) (1), was built from mixed pyridyl-type monocarboxylates, isonicotinate (ina) and 3-hydroxypicolinate (pico), containing Kagome-type [Co(3)(pico)(2)(H(2)O)(2)](n)…
Photoluminescence quenching of CdSe/ZnS quantum dots (QDs) by molecular ferrocene and ferrocenyl thiols was investigated by steady-state absorption and emission spectroscopy. Modification of QD surfaces with ferrocenyl thiols exhibiting different lengths of the alkyl chains (6, 8, and 11 carbon units) was performed by…
In this paper structural analysis of nonhomogeneous nanotubes has been carried out using nonlocal elasticity theory. Governing differential equations of nonhomogeneous nanotubes are derived. Nanotubes include both single wall nanotube (SWNT) and double wall nanotube (DWNT). Nonlocal theory of elasticity has been emplo…
The thermal characteristics of thermally treated and untreated very low density polyethylene, isotactic polypropylene and their blends were investigated. Injection moulded blends containing five different weight percentages of VLDPE/iPP were prepared and thermally treated at 100°C for 2, 4, 7 and 14 days. Differential…
In this paper, we investigate the impact of edge disorder on the transport properties of graphene nanoribbons with zigzag and armchair symmetries. The diffusive and localization conduction regimes are analysed by performing a mesoscopic study on long disordered ribbons and by extracting elastic mean free paths and loc…
Graphene physics is currently one of the most active research areas in condensed matter physics. Countless theoretical and experimental studies have already been performed, targeting electronic, magnetic, thermal, optical, structural and vibrational properties. Also, studies that modify pristine graphene, aiming at fi…
The biodegradabilities of poly(butylene succinate) (PBS) powders in a controlled compost at 58 degrees C have been studied using a Microbial Oxidative Degradation Analyzer (MODA) based on the ISO 14855-2 method, entitled "Determination of the ultimate aerobic biodegradability of plastic materials under controlled comp…
Biological ion channels in membranes are selectively permeable to specific ionic species. They maintain the resting membrane potential, generate propagated action potentials, and control a wide variety of cell functions. Here it is demonstrated theoretically that boron nitride nanotubes have the ability to carry out s…
We fabricate and investigate high-quality graphene devices with contactless, suspended top gates and demonstrate the formation of graphene pnp junctions with tunable polarity and doping levels. The device resistance displays distinct oscillations in the npn regime, arising from the Fabry–Perot interference of holes be…
The polymorphism of m -aminobenzoic acid has been investigated. Two polymorphs have been identified and characterized by X-ray powder diffraction (XRPD), Fourier transform IR (FTIR), microscopy, and thermal analysis. The melting properties and isobaric heat capacities of both polymorphs have been determined calorimetr…
We report the effect of increasing amounts of glycidyl methacrylate (GMA) in random copolymers of P(S-r-MMA-r-GMA) on the formation of nonpreferential mats for the assembly of P(S-b-MMA) block copolymers. Increasing the GMA concentration in the random copolymer from 1 (PG1) to 4 (PG4) mole % increased the cross-linkin…
We evaluated the mechanical properties of the genetically engineered, recombinant silk-elastinlike protein copolymer, SELP-47K. In tensile stress-strain analysis, methanol-treated non-cross-linked SELP-47K films exceeded the properties of native aortic elastin, attaining an ultimate tensile strength of 2.5 +/- 0.4 MPa…
Using ab initio molecular dynamics we investigate the electronic and lattice structure of $A{\text{Fe}}_{2}{\text{As}}_{2}$ $(A=\text{Ca},\text{Sr},\text{Ba})$ under pressure. We find that the structural phase transition (orthorhombic to tetragonal symmetry) is always accompanied by a magnetic phase transition in all…