Materials Literature
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Abstract Two types of supramolecular carbon nanostructures, carbon nanospheres (CNS) and multiwalled carbon nanotubes, (MWCNTs) are investigated for their potential as nanofillers in the bioplastic polylactide (PLA). Modification of the surfaces of both carbon nanostructures by covalent attachment of dodecylamine is a…
Porous, large surface area, metastable zirconias, are of importance to catalytic, electrochemical, biological, and thermal insulation applications. Combustion synthesis is a very commonly used method for producing such zirconias. However, its rapid nature makes control difficult. A simple modification has been made to…
Three mononuclear rhenium(IV) compounds of general formula NH 2 Me 2 [ReX 5 (DMF)] [NH 2 Me 2 + = dimethylammonium cation, DMF = N,N -dimethylformamide, and X = Cl ( 1 and 2 ) and Br ( 3 )] have been prepared and characterized. In all three cases, the rhenium atom is six-coordinated by five chloro ( 1 and 2 ) or bromo…
Abstract Potassium sodium niobate (K,Na)NbO 3 (KNN) particles with a plate‐like morphology were prepared. First, an unknown potassium sodium niobate hydrate particles with 150‐nm thickness and 1500‐nm width were synthesised by a hydrothermal method. After calcining these particles at 450 °C, plate‐like KNN particles w…
Abstract A free radical thermoset resin consisting of a copolymer of conjugated linseed oil (CLO) or conjugated soybean oil (CSO), n ‐butyl methacrylate (BMA), divinylbenzene (DVB), and maleic anhydride (MA) has been reinforced with rice hulls. Composites containing 70 wt % of the filler were compression molded, the c…
Abstract Four as‐cast iron alloys with (mass%) 1B + 3C, 2B + 2C, 3B + 1C and 4B + 1C were investigated in respect to their microstructure by optical and scanning electron microscopy with EDX and ESBD and by microprobe analysis. The microhardness of eutectic Fe 3 (C,B) increased with the B/C ratio and raised the resist…
Diffusion of water in a phase-separated poly( l -lactide)- b -poly(ethylene glycol) (PLLA−PEG) copolymer with both blocks crystallizable was investigated using time-resolved ATR-FTIR with deuterated water and 2D correlation analysis. Water molecules of three different states were identified in the copolymer matrix, an…
m-Calix[3]amides carrying the bithiophene chromophore (BTC3A) and terthiophene chromophore (TTC3A) were synthesized by the cyclic trimerization of m-aminobenzoic acid esters for the purpose of the control and understanding of the self-assembly of oligothiophene chromophores. Polymers and model compounds were also prep…
We have demonstrated the higher yield dimerization of single-crystalline Ag nanocubes through preciously controlled face-selective functionalization. With the achievement of the higher yield dimerization, we could thus observe some interesting optical properties of the dimer. Both experimental and theoretical studies…
We describe here a simple and low-cost method to prepare ultra-thin, homogeneous, and transferable films of pristine carbon nanotubes (CNTs). The highly efficient chemical vapor deposition (CVD) growth method involves silica supported catalysts and alcohol vapor as gaseous carbon source. By varying the amount of catal…
Cu 0.96 Fe 0.04 O 1-δ nanocrystalline films were fabricated using reactive sputtering at different oxygen partial pressures ( P O2 ). The electrical transport properties of the films were measured in a broad temperature range (10–300 K) under magnetic fields of up to 5 T. Anomalous Hall effect (AHE) of up to 0.4 µΩ cm…
Adsorption and desorption are critical to crystal engineering for the protein crystal applications. In this paper, we present a new method to study the adsorption and desorption kinetics of waters in lysozyme crystals. H(2)O and D(2)O were used as ideal indicators for the purpose. The lysozyme crystals were prepared i…
Solid-state nuclear magnetic resonance (NMR) has been applied to “amorphous” active layers consisting of donor-acceptor self-assembled composites in organic solar cells. Several stoichiometric supramolecular complexation states as well as the charge-transfer states are revealed by the solid-state NMR, which have been…
In this study, poly(lactic acid) (PLA) ultrafine fibers have been prepared by electrospinning method using mix-solvent. The results showed that the variation of solvent ratio (N,N-dimethylformamide (DMF)/Dichloromethane (DCM)) could change the surface morphology of PLA nanofibers. By adjusting the solvent ratio, the q…
The nitrogen monoxide (NO) adsorption on platinum tetramer (Pt4) clusters supported on gamma alumina (gamma-Al2O3) with surface index (111) was investigated by using ab-initio calculation based on density functional theory. The Pt4 geometries used in this study are tetrahedron and planar rhombus. The adsorption of Pt4…
The changes of dynamical behaviour of a single fullerene molecule inside an armchair carbon nanotube caused by the structural Peierls transition in the nanotube are considered. The structures of the smallest C20 and Fe@C20 fullerenes are computed using the spin-polarized density functional theory. Significant changes…
Layer-by-layer (LbL) assembly of silica (SiO 2 ) and titania (TiO 2 ) nanoparticles leads to the generation of multifunctional thin films with useful properties. However, favorable film growth for these all-nanoparticle LbL thin films occurs in a narrow pH range. In this work, we widen the processing window of TiO 2 /…
Zinc sulfide (ZnS) quantum dot is modified with 3-mercaptopropyltrimethoxysilane (MPTMS) to obtain MPTMS functionalized SiO(2)/ZnS nanocomposite. Novel rare earth/inorganic/organic hybrid materials are prepared by using 3-(triethoxysilyl)-propyl isocyanate (TESPIC) as an organic bridge molecule that can both coordinat…
Self-assembled monolayers (SAMs) were prepared from solutions with different proportions of a photoactive, azobenzene-based, silanized derivative of disperse red one (dDR1), and octyltriethoxysilane (OTE), a shorter, nonphotoactive molecule. The in-plane photoinduced orientational ordering of the resulting two compone…
Using a minimal model based on the continuum theory of a two-dimensional hard-core/square-shoulder ensemble, we reinterpret the main features of cluster mesophases formed by colloids with soft shoulder-like repulsive interactions. We rederive the lattice spacing, the binding energy, and the phase diagram. We also exte…