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。
Foams of an engineering plastic, poly(ether imide), were extruded using a single screw extruder employing pressurized CO 2 as the blowing agent. The porosity, pore size distributions, and the density of the foams were especially affected by the pressure drop, the pressure loss rate, and temperature at the die. Signifi…
The first crystal structure of a barwin-like protein, named carwin, has been determined at high resolution by single-wavelength anomalous diffraction (SAD) phasing using the six intrinsic S atoms present in the protein. The barwin-like protein was purified from Carica papaya latex and crystallized in the orthorhombic…
Continuously studied since its discovery, graphene offers truly unique opportunities, because unlike most semiconductor systems, its 2D electronic states are not buried deep under the surface and it can be easily accessed directly by tunneling or by other local probes. An in-depth analysis of recent advances in graphe…
Photocatalytic carbon–carbon σ-bond oxidation of unstrained ketones by water using rhodium(III) porphyrin catalyst was accomplished. The catalysis yielded the corresponding one-carbon-less carbonyl compound and H 2 with up to 30 turnovers in both aliphatic and cyclic ketones with α substituents. No carbon loss was obs…
We probe the structure and electronic band structure of graphene grown on a Pt(100) substrate using scanning tunneling microscopy, low energy electron diffraction, and angle-resolved photoemission spectroscopy. It is found that the graphene layer lacks a well-defined azimuthal orientation with respect to the substrate…
High-quality crystals are key to obtaining accurate three-dimensional structures of proteins using X-ray diffraction techniques. However, obtaining such protein crystals is often a challenge. Several containerless crystallization techniques have been reported to have the ability to improve crystal quality, but it is u…
The synthesis of a diiminopyridine (DIMPY) ligand containing pendant mixed sandwich cobaltocene functionalities on the imine nitrogens was prepared and characterized (18). Its reactivity with 2 equiv of GeCl2·dioxane and SnCl2 in THF yields the respective Lewis base mediated autoionization products (18Ge and 18Sn). An…
UNLABELLED: A new approach to the surface engineering of superparamagnetic iron oxide nanoparticles (SPIONs) may encourage their development for clinical use. In this study, we demonstrated that nonpolymeric surface modification of SPIONs has the potential to be an advanced biocompatible contrast agent for biomedical…
The glassy dynamics of an isolated polymer chain is found to be identical to that of a bulk material. [Also see Report by Tress et al. ]
Epoxy‐clay nanocomposites were synthesized by high shear mixing (HSM) technique using diglycidyl ether of bisphenol A (DGEBA) epoxy reinforced by Nanomer I.30E nanoclay. Disordered intercalated with some exfoliated structure were found in the resultant nanocomposites. The fabricated samples were exposed to water and c…
Effect of nano-patterned composite electrode and backswitching poling technique on dielectric and piezoelectric properties of 0.7 Pb(Mg1/3Nb2/3)O3-0.3 PbTiO3 was studied in this paper. Composite electrode consists of Mn nano-patterns with pitch size of 200 nm, and a blanket layer of Ti/Au was fabricated using a nanoli…
The oxidation of nitric oxide and propylene was studied over a model alumina-supported platinum catalyst. Two treatments (22 h at 250 °C and 2 h at 800 °C) involving sulfur dioxide were performed in order to understand the effect of SO 2 aging. The role and stability of sulfur species stored during aging were investig…
Molecular assemblies, namely, polyelectrolyte complexes (PECs) composed of negatively charged xylan-based derivatives and a novel positively charged cellulose derivative (CN(+)), were used for interfacial modification of wood fibers by charge directed self-assembly. The adsorption process was studied using polyelectro…
The efficiency of solar cells depends on absorption intensity of the photon collectors. Herein, mobile quantum dots (QDs) functionalized with thiol ligands in electrolyte are utilized into dye-sensitized solar cells. The QDs serve as mediators to receive and re-transmit energy to sensitized dyes, thus amplifying photo…
Carbon nanotubes are surprisingly ubiquitous in their use for renewable energy applications as well as for environmental protection and remediation. Hence, this is the motivation for the current review, to investigate into their usefulness. The characteristic properties of these nanotubes are a result of their large s…
The synthesis and electrochemical characterization of polymers that bear galvinoxyles in the side chains is described. The monomers are synthesized employing C–C coupling reactions, polymerized with Rh(nbd)BPh 4 as a catalyst, and subsequently oxidized. These galvinoxyl‐containing polymers represent interesting anode…
Glycine betaine (GB) is one of the most important osmolyte which is known to stabilize proteins as well as counteract the denaturing effect of urea. There have been many studies indicating protein stabilization and counteraction of the effect of urea by GB. However, the exact mechanism of counteraction is still debate…
Colloids are known to form planar, hexagonal closed packed (hcp) crystals near electrodes in response to electrohydrodynamic (EHD) flow. Previous work has established that the EHD velocity increases as the applied ac frequency decreases. Here we report the existence of an order-to-disorder transition at sufficiently l…
The concept of using a micro-reactor tool for studying single particle polymerization is demonstrated in the present study. The micro-reactor is equipped with a video microscope for capturing the growth of polyethylene-particles during polymerization. The gas-phase polymerizations are done in conditions very close to…
Need for controlled drug delivery has gained immense attention over the conventional dosage forms due to improved therapeutic efficacy and reduced toxicity by controlled delivery. Recently, electrospun fibres have gained wide attention particularly for drug delivery systems, tissue engineering and vascular grafts for…