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 Reaction of C60Cl6 with organic cyanide yielded an ionic salt comprising the fullerene anion [C60(CN)5]–. This anion showed unprecedented stability in air and in solutions in the presence of water, organic and inorganic acids, and various electrophiles. The remarkable stability of the [C60(CN)5]– anion opens…
In the present work, the surface tension and density of a set of Al−Ni alloys have been investigated as a function of composition and temperature. The measurements were performed by the large drop method, under equilibrium and with an oxygen-free surrounding atmosphere to prevent oxidation phenomena. The study was foc…
The mechanical response of ultrathin NaCl crystallites of nanometer dimensions upon manipulation with the tip of a scanning tunneling microscope (STM) is investigated, expanding STM manipulation to various nanostructuring modes of inorganic materials as cutting, moving, and cracking. In the light of theoretical calcul…
It is widely accepted that redox status, along with the partial pressure of oxygen (pO(2)), determines the efficacy of some therapeutic methods applied to treat tumors, including radiation. Redox status, evaluated by the reduction of a nitroxyl probe, was reportedly heterogeneous in a mouse tumor model. However, neith…
Abstract The tris(1‐pyrazolyl)methanesulfonate lithium salt Li(Tpms) [Tpms = SO3C(pz)3–] reacts with [Mo(CO)6] in NCMe heated at reflux to yield Li[Mo(Tpms)(CO)3] (1), which, upon crystallization from thf, forms the coordination polymer [Mo(Tpms)(CO)2(μ‐CO)Li(thf)2]n (2). Reaction of 1 with I2, HBF4 or AgBF4 yields [M…
A new method of fabricating "clickable" gold nanoparticles that could be used as the building block of nanobioprobes was described. On the basis of a well-developed strategy of encapsulating hydrophobic nanoparticles with a layer of amphiphilic polymers, cheap, easily prepared graft polymer was used as a modifier to p…
Ribonucleotide reductase (RNR) is the bottleneck enzyme in the synthesis of dNTPs required for DNA replication. In order to avoid the mutagenic effects of imbalances in dNTPs the amount and activity of RNR enzyme in the cell is tightly regulated. RNR expression from the nrdAB operon is thus coupled to coincide with th…
The present study focuses on understanding hydrogen bond patterns in a series of variably substituted pyridyl-pyridazines as a function of positional isomerism and steric factors. A relatively uncommon multiple hydrogen bond acceptor nature of pyridazine has been observed in the di- and tripyridazine compounds. With i…
Abstract We report on the synthesis and self‐assembly of a novel well‐defined coil‐brush diblock copolymer with linear crystalline polyethylene (PE) as the coil block and hydrophilic poly [oligo(ethylene glycol) methyl ether methacrylate] (POEGMA) as rod brush via a combination of chain shuttling ethylene polymerizati…
New aromatic compounds with a pyridazine core have been synthesized. Four electron-withdrawing monomers have been easily prepared from simple condensation reactions and ring closure procedures. Optimized HOMO, LUMO, and bandgap energy levels have been obtained. The resulting conjugated polymers have been tested in org…
A strong nonlinear pressure dependence of the optical absorption edge has been measured in defect chalcopyrites ${\text{CdGa}}_{2}{\text{Se}}_{4}$ and ${\text{HgGa}}_{2}{\text{Se}}_{4}$. The behavior is due to the nonlinear pressure dependence of the direct band-gap energy in these compounds as confirmed by ab initio…
An alternating narrow bandgap conjugated copolymer (PICZ-DTBT, E(g) = 1.83 eV) derived from 5,11-di(9-heptadecanyl)indolo[3,2-b]carbazole and 4,7-di(thieno[3,2-b]thien-2-yl)-2,1,3-benzothiadiazole (DTBT), was prepared by the palladium-catalyzed Suzuki coupling reaction. The resultant polymer absorbs light from 350-690…
Abstract Hydrogen evolution from acidic aqueous solutions of TiIIIcitrate is strongly catalyzed by Co(dmgBF2)2. The reaction generates an intermediate with maximum absorbance at 770 nm. The slow disappearance of this intermediate takes place simultaneously with the generation of H2 in a process that was most efficient…
Multi-core MgB 2 wire reinforced by stainless steel (SS) has been made by an in situ approach and subjected to additional deformations and mechanical stressing. A critical current density J c of 10 4 A cm − 2 at 4.2 K was measured in an external field of 9.45–10 T. The filament density of drawn wire was increased by c…
Here we report a mini-three-dimensional dye-sensitized solar cell (3D DSSC) based on TiO2 nanotube arrays (TNAs). TNAs were directly grown on spiral-shaped titanium wire via a facile potentiostatic anodization. Furthermore, the TNAs film was characterized by scanning electron microscopy, x-ray diffraction and transmis…
The self-assembly of benzene diboronic acid molecules on KCl(001) is investigated at room temperature by means of noncontact atomic force microscopy. When depositing the molecules on the freshly cleaved surface, the molecules self-assemble into an extended two-dimensional supramolecular phase driven by H-bonds. Theore…
The Krupp−Koppers (K-K) extractive distillation method with N -formylmorpholine (NFM) as the solvent is one of the most important processes for catalytic hydrogen refining of rude benzene. To increase the capacity and selectivity of the solvent and decrease the ratio of solvent to feed in this process, ethylene glycol…
We report a new method for generating both continuous and discrete density gradients in microparticles of biodegradable polymers via an electrospray technique. The gradients were generated by spatially varying the deposition time of electrosprayed microparticles. The substrate coated with a density gradient of micropa…
The development of functional materials based on the supramolecular organization of photoactive species in nanosized porous matrices requires a deep knowledge of host−guest interactions and of their influence on material properties and stability. Extensive first-principles investigations on the fluorescent dye fluoren…
Abstract BACKGROUND: Sustainable technologies need to be developed to treat saline seafood wastewater (SSW) efficiently. This study focused on the feasibility of a continuously operated microbial fuel cell (MFC) with modified anoxic/oxic (A/O) architecture (A/O–MFC) for power generation and treatment of SSW simultaneo…