Materials Literature
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New stable and adherent coating materials have been synthesized on the basis of inorganic/organic hybrid polymers. As the inorganic part, different poly(silsesquioxanes) (PSSQ) have been functionalized to act as polymeric chain transfer agents (CTAs) for a reversible addition fragmentation chain transfer polymerizatio…
Motivated by recent successful synthesize of segmented graphene nanoribbons (GNRs) with junctions, we explore electronic properties of a novel form of GNR with sawtooth-like structure using the density-functional theory method. It is found that the unique edge structures of the sawtooth-like GNR induce richer band-gap…
The wear comfort desired by the consumer is leading to increased use of fabrics containing elastane filaments. However, the elastane's ratio is an important factor influencing the fabric's mechanical properties. Thus, we study the effect of elastane's ratio and finishing process on the elasticity of denim whose weft y…
Nickel is widely used as an industrial catalyst and has recently been investigated as an oxygen carrier in chemical looping combustion (CLC), which is a novel approach for power generation that offers inherent CO 2 capture. However, prior studies have reported a wide range of activation energy values for nickel format…
The electrochemical opening of closed-ended, pristine single-walled carbon nanotubes (SWCNTs) upon the application of either a sufficiently oxidizing or reducing electrode potential is reported. Hitherto, it has been unclear whether the side walls of SWCNTs are electrochemically active, or whether, like their multiwal…
We describe a simple method to control the generation and the dimensions of focal conic domains in smectic liquid-crystal films. The surface of silicon substrates is structured in a way that areas with homeotropic anchoring conditions alternate with areas possessing random planar anchoring conditions. In smectic films…
Two chiral poly(3-alkylthiothiophene)s (P3ATTs) were prepared by polymerization of 2-bromo-4-(( S )-3,7-dimethyloctylthio)thiophene using a “modified McCullough method” ( P1 ) and 2,5-dibromo-3-(( S )-3,7-dimethyloctylthio)thiophene by the GRIM method ( P2 ). P1 was regioregular, while P2 was regio-irregular, as confi…
Aggregation behavior of colloidal silver nanoparticles for surface-enhanced Raman scattering (SERS) on a hydrophobic surface is investigated. A regular glass slide is used to deposit dicholoromethylsilane in order to inactivate the free hydroxyl groups and increase the hydrophobicity of the glass surface. A submicron…
A facile, one-step, template-free method is reported to tune β- d -glucose-stabilized Au nanoparticles (NPs) into 3-D network nanowires (NWs) and thus mesoporous gold sponge on a large scale by precise control of the solution pH in aqueous medium at room temperature. The Au NPs appear to undergo sequentially linear ag…
Three kinds of one-dimensional (1D) MgO nanostructures: nanowires, nanobelts, and nanotubes were synthesized through introducing the low-melting point mental Sn as catalyst in the chemical vapor deposition route. The morphology and crystalline structure were characterized by X-ray diffraction, field emission scanning…
Polylactide (PLA) is used for manufacturing lunch boxes and for packaging fresh food in Japan. PLA can be hydrolysed relatively easily to produce lactic acid, lactide and oligomers. Different types of PLA sheet were subjected to migration tests under various conditions and the lactic acid, lactide and oligomers conten…
We designed and tested an antioxidant nanoreactor based on encapsulation of Cu,Zn superoxide dismutase in amphiphilic copolymer nanovesicles, the membranes of which are oxygen permeable. The nanovesicles, made of poly(2-methyloxazoline)-poly(dimethylsiloxane)-poly(2-methyloxazoline), successfully encapsulated the prot…
The self-assembly of a modified fragment of the amyloid beta peptide, based on sequence Abeta(16-20), KLVFF, extended to give AAKLVFF is studied in methanol. Self-assembly into peptide nanotubes is observed, as confirmed by electron microscopy and small-angle X-ray scattering. The secondary structure of the peptide is…
The ability of chelated Gd to serve as an effective magnetic resonance (MR) contrast agent largely depends on fast exchange rates between the Gd-bound water molecules and the surrounding bulk water. Because water diffuses slowly across lipid bilayers, liposomes with encapsulated chelated Gd have not been widely adopte…
Polymer nanocomposites are usually made by incorporating dried nanoparticles into polymer matrices. This would easily lead to aggregation of nanoparticles and then would readily bring about opaqueness for nanocomposites based on functionally transparent polymers. In this work, preparation of highly transparent ZnO qua…
Can quantum dots (Qdots) act as relevant intracellular probes to investigate routing of ligands in live cells? The intracellular trafficking of Qdots that were coupled to the plant toxin ricin, Shiga toxin, or the ligand transferrin (Tf) was studied by confocal fluorescence microscopy. The Tf:Qdots were internalized b…
Core/shell structures often exhibit improved physical and chemical properties. Developing a relatively general, facile, and low temperature synthetic approach for semiconductor core/shell structures with complex compositions is still a particularly challenging work. Here we report a general chemical conversion route t…
Soft nanotechnology is a rapidly developing area of research that exploits principles such as self-assembly, entropy, swelling and collapse transitions, and polymeric building blocks to emulate actuation principles observed in natural systems. Unlike lithographically fabricated devices, soft nanotechnology uses much l…
Single crystals of the {Fe (II)(pyrazine)[Pt(CN) 4]} spin crossover complex were synthesized by a slow diffusion method. The crystals exhibit a thermal spin transition around room temperature (298 K), which is accompanied by a 14 K wide hysteresis loop. X-ray single-crystal analysis confirms that this compound crystal…
Alkali treatment coupled with high pressure defibrillation and acid treatment have been tried on banana fibers obtained from the pseudo stem of the banana plant Musa sapientum. The structure and morphology of the fibers have been found to be affected on the basis of the concentration of the alkali and acid and also on…