Materials Literature
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Used foundry sands represent the highest amount of solid wastes generated by foundries. Classified by European Union regulations as non hazardous waste, they represent a relevant source to be reused in several industrial sectors, in building construction primarily.
Lysozyme (Lys) and cytochrome c (Cyc,c) proteins were used as mild reducing and stabilizing agents to synthesize gold nanoparticles (NPs) at precisely 40 and 80 degrees C. All reactions were monitored simultaneously by UV-visible measurements to determine changes in the nature of the protein during the course of react…
From waste!! Gram-negative bacteria from the genus Cupriavidus can serve as a scaffold for the absorption and reduction of palladium(II) contained in industrial waste solutions. The resulting cell-supported palladium(0) nanoparticles were active for catalysis of CC bond formation. This method offers an economically c…
In this communication we report the results of our studies on the orbital invariance properties of the state-specific multireference coupled cluster approach suggested by Mukherjee and co-workers (Mk-MRCC). In particular, we have gathered numerical evidence to show that even when the linear excitation manifold is modi…
The stoichiometric reduction of the MIL-47(V) framework (see picture; green VO6 octahedra) was performed using cobaltocene as an organometallic reducing agent. The formation of a mixed-valence compound with a V3+/V4+ ratio of 1:1 was confirmed by magnetic susceptibility measurements. Incorporation of cobaltocene into…
Improved device linearity for low-noise applications has been demonstrated in 0.25-μm AlGaN/GaN metal-insulator-semiconductor high-electron-mobility transistors (MISHEMTs) using atomic-layer-deposited (ALD) Al2O3as gate dielectric. The measured dc transconductance, microwave small signal, and noise performance feature…
Poly(methacrylic acid)-grafted carbon nanotube-based thin films are found to significantly improve the neuronal differentiation efficiency, and relatively mature neuronal cells have been derived directly from hESCs, owing to their excellent protein sequestration ability and nanofibrillar characteristics. This novel ma…
A comb-like dual hydrophilic graft chitosan copolymer, chitosan-graft-poly(N-isopropylacrylamide) (CS-g-PNIPAM), was synthesized by means of atom transfer radical polymerization (ATRP) and click chemistry. The thermo-responsive association behavior of the copolymer in dilute aqueous solutions has been investigated by…
We report the first evidence for functionalization of Ga(2)O(3) nanowires (NWs), which have been incorporated as the active material in room temperature capacitance gas-sensing devices. An adsorbed layer of pyruvic acid (PA) was successfully formed on Ga(2)O(3) NWs by simple room temperature vapor transport, which was…
Coatings with vertical gradients in composition were produced by drying an aqueous polymer dispersion containing both charged and neutral particles. After drying, the neutral component was enriched at the film/air interface. The spontaneous vertical segregation between the two types of particles goes back to a differe…
We report direct folding of a 17-residue helix protein (pdb:2I9M) by standard molecular dynamics simulation (single trajectory) at room temperature with implicit solvent. Starting from a fully extended structure, 2I9M successfully folds into the native conformation within 16 ns using adaptive hydrogen bond-specific ch…
The flocculation and solid/liquid separation of four well-characterized kaolinites (2 well, 2 poorly crystallized) have been studied for comparison of surface structure (SEM), aggregate structure during flocculation (cryo-SEM), settling rate, and bed density (with raking). It is shown that major differences in these p…
Abstract Altering the characteristics of an active‐site loop in an (S)‐selective ω‐transaminase from Arthrobacter citreus (variant CNB05‐01) influences the enantioselectivity. This active‐site loop belongs to the second subunit of the dimeric enzyme structure that participates in the coordination of pyridoxal‐5′‐phosp…
Flowerlike Ni−Fe alloy nanostructures composed of nanorods have been synthesized via a facile hydrothermal approach at relatively low temperature (100 °C) independent of surfactants or external magnetic field. The concentrations of NaOH and FeCl 3 play a crucial role in determining the morphology of the Ni−Fe alloy vi…
Due to the biocompatibility of poly(ethylene glycol) (PEG), PEG-based hydrogels have attracted considerable interest for use as biomaterials in tissue engineering applications. In this work, we show that PEG-based hydrogels prepared by photopolymerization of PEG macromonomers functionalized with either acrylate or acr…
Abstract Metall‐organische Gerüste bieten als eine Klasse von hochgradig porösen Materialien vielfältige Möglichkeiten für biologische und medizinische Anwendungen. Durch die große Bandbreite an chemischen Zusammensetzungen sind toxikologisch zulässige Rezepturen realisierbar, und durch die hohe Funktionalität der MOF…
Mehr als ein Metall enthalten die mesoporösen Materialien MGa2O4 (M=Zn, Ni, Co), die durch Ionenaustausch aus kolloidalem mesoporösem NaGaO2 zugänglich sind (siehe Schema mit TEM-Bildern). Weil diese Vorstufe zugleich als Templat wirkt, spart man einen Templatentfernungsschritt ein.
An efficient and easily scalable transformation of alcohols and aldehydes to carboxylic acids and nitroalkane derivatives to the corresponding carbonyls and carboxylic acids using permanganate as the oxidant within a continuous flow reactor is reported. Notably, the generation and downstream processing of MnO(2) slurr…
We investigate the use of nanopatterned metallic films as transparent conductive electrodes in optoelectronic devices. We find that the physics of nanopatterned electrodes, which are often optically thin metallic films, differs from that of optically thick metallic films. We analyze the optical properties when perform…
High Resolution Image Download MS PowerPoint Slide Click chemistry offers highly selective and orthogonal reactions that proceed rapidly and under a variety of mild conditions with the opportunity to create highly defined and multifunctional materials. This work illustrates a strategy where step-growth networks are fo…