Materials Literature
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One-dimensional ZnSe nanobelts with three-dimensional triple-crystal architecture have been fabricated on Au-coated Si substrates by thermal evaporation of ZnSe powders. The as-synthesized triple-crystal ZnSe nanobelts are a metastable 2H-wurtzite structure while the typical structure of ZnSe nanocrystal is a stable z…
The term biodegradation is loosely associated with materials that could be broken down by nature either through hydrolytic mechanisms without the help of enzymes and/or enzymatic mechanism. Surgical implants made from biodegradable biomaterials could be used as a temporary scaffold for tissue regeneration. The largest…
Monte Carlo molecular simulations are reported to investigate the amorphous region between crystalline lamellae of isotactic polypropylene ( i PP). It is the first such study in which consideration is given to the nature of pendant side groups on the polymer chain. The crystalline lamellae are modeled after the α 2 cr…
The crystallization kinetics and the perturbation of the melt mesophase induced by crystallization in the blends of a symmetric poly(ε-caprolactone)- block -poly(1,4-butadiene) (PCL- b -PB) and a poly(1,4-butadiene) homopolymer (h-PB) have been investigated. The crystallization at low to moderate undercooling was foun…
This paper reported the use of single-walled carbon nanotubes (SWCNTs) with terminal carboxylic acid groups as an electron-transfer bridge layer for improved photocurrent of viologen/Ru complex-based photoelectrochemical cells. The preparation of SWCNTs on tin-doped indium oxide (ITO) was prepared by spray-coating. Th…
The PyFrag program (released as PyFrag2007.01) is a "wrap-around" for the Amsterdam Density Functional (ADF) package and facilitates the extension of the fragment analysis method implemented in ADF along an entire potential energy surface. The purpose is to make analyses of reaction paths and other (in principle also…
The ability to manipulate, in a well-controlled manner, the surface properties of polyimide (PI) films, without altering the substrate properties, is crucial to the applications of this polymer, which is important to the microelectronics industry. In this work, a simple one-step method for the chloromethylation of PI…
The thermoelectric power and thermoelectric figure of merit for carbon nanostructure consisting of graphite-like (sp(2)) and diamond-like (sp(3)) regions have been investigated. The probability of electron collisions with quasi-ballistic phonons in sp(2) regions has been analysed for the first time. We have shown that…
The IDEAS Guidelines for the assessment of internal doses from monitoring data suggest default measurement uncertainties (i.e. scattering factors, SFs) to be used for different types of monitoring data. However, these default values were mainly based upon expert judgement. In this paper, SF values have been calculated…
Wurtzite (B4) compounds commonly undergo a structural transition to the rocksalt (B1) phase under high pressure. The underlying transition mechanism, or the so-called transition path, has been extensively investigated in recent years. Two different transition paths have been proposed for the B4-B1 phase transition, th…
The alignment behavior of thermotropic smectic A liquid-crystalline molecule 1 and its complexes with lithium triflate on the thin films of rubbed polyimides has been examined. Compound 1 has a rod−coil block structure consisting of a tetra(ethylene oxide) chain that is polar and a phenylcyclohexyl mesogen that is non…
Strengite, FePO 4 ·2H 2 O, commonly occurs in soils and represents a source of P for plants. The solubility of strengite is thus considerably important in the field of agriculture and environmental geochemistry, but few solubility data are available. Using absorption spectrophotometric techniques, the solubility equil…
A unique semibatch crystallization process, coupling with a high-speed rotor-stator device, was developed for generation and control of fine particles. The key underlying mechanism of this process is controlled secondary nucleation under a high shear environment during crystallization, in contrast to the conventional…
A rare micro6-oxo-centered Mn6 mixed-valent cluster (1) is prepared and used as a secondary building unit for the self-assembly of its azido-bridged polymeric analogue (2) in a systematic way with the retention of the Mn6 core of 1. Both complexes are characterized by X-ray single-crystal structure determination. The…
BACKGROUND: Time-resolved immunofluorometric assays (TrIFA) using lanthanide-labeled nanoparticles have greatly increased the sensitivity of immunoassays. Current labeling strategies, however, use either physical doping of lanthanide chelates into preformed nanoparticles or covalent linking of lanthanide chelates to p…
We report a high-yield facile synthesis of uniform single-crystalline γ-CuI nanocrystals with tetrahedral morphology from the reaction between Cu n and KI under ambient conditions. In our method, I - perform the roles of reactant and surface stabilizing agent, thereby reducing the complexity of the reaction by elimina…
Using a domestic microwave oven and new, inexpensive precursors, a rapid and reliable synthesis of highly luminescent CdSe/ZnS NPs was developed. To evaluate the quality of our core/shell particles for varying shell thickness in comparison to that of CdSe/ZnS nanoparticles obtained commercially, the parameter fluoresc…
The quinacridone derivatives N, N ‘ -dialkyl-1,3,8,10-tetramethylquinacridone (C n TMQA, n = 6, 10, 14) were used as building blocks to assemble luminescent nano- and microscale wires. It was demonstrated that C n TMQA with different lengths of alkyl chains display obviously different wire formation properties. C10TMQ…
We present a model of charge transport in organic molecular semiconductors based on the effects of lattice fluctuations on the quantum coherence of the electronic state of the charge carrier. Thermal intermolecular phonons and librations tend to localize pure coherent states and to assist the motion of less coherent o…
The electric conductance of a strip of undoped graphene increases in the presence of a disorder potential, which is smooth on atomic scales. The phenomenon is attributed to impurity-assisted resonant tunneling of massless Dirac fermions. Employing the transfer matrix approach we demonstrate the resonant character of t…