Materials Literature
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An attempt has been made to review the influences of different structural factors on physical and water vapor transport properties of segmented shape memory polyurethane (SPU) for breathable textile, biomedical and many other industrial applications. The differences between ordinary, segmented and segmented shape memo…
Disc and rod shaped molecules which are completely miscible in the nematic phase were synthesised and the miscibility behaviour was investigated and confirmed by POM, DSC and XRD studies.
Abstract In this study we provide experimental methods to identify the magnetic resonance of split ring resonantors (SRR) at the microwave frequency regime. Transmission measurements were performed on both single SRR unit cell and periodic arrays of SRRs. The magnetic response of the SRR structure was demonstrated by…
Here we report the synthesis, characterization and hydrogelation of polymers consisting of pamidronate, a useful therapeutic agent.
Supramolecular polymer-hybrid nanotubes have recently emerged the self-assembly of coil-ring-coil block-copolymers and the surface-initiated polymerization from self-assembled peptide nanotubes. The article describes recent developments in designing functional organic nanotubes.
The crystal structure of a new monomeric Fe(II) spin-crossover thiocyanate complex with a polypyridyl triazine-based ligand is reported at three temperatures. Spectroscopic, thermal and magnetic studies are presented that allowed the characterization of the thermal spin-crossover experienced by this compound and its c…
Photoluminescence (PL) and optical gain measurements have been performed for single crystals of thiophene/phenylene co-oligomer at room and low temperatures. Broad PL bands are transformed to be an ensemble of several spectrally narrower vibronic peaks with decreasing temperature. Very sharp lines as narrow as ∼3meV a…
In today's material world it is agreed that a complete understanding of the solidification path and of the resulting microstructure can only be obtained by treating the alloys as mathematical systems, followed by validation of the models through definitive experiments. This paper will attempt to review the main recent…
The lanthanide(III) complexes [Ln(LH2)(NO3)3] 1-11(La-Er), 15(Y) and [Ln(LH2)(NO3)2(H2O)](NO3) 12-14 (Tm-Lu) of the tetraiminodiphenolate macrocycle L2- have been prepared by the transmetallation reaction between [Pb(LH2)(NO3)2] and Ln(NO3)3.nH2O. In these compounds, the uncoordinated imino nitrogens are protonated an…
The structure of a TiAl3Hx complex for the formation of a TiAl3 binary phase that could play important roles in the reversible de-/hydrogenation of Ti-doped NaAlH4 has been identified on the basis of first principles density functional theory studies.
This review focuses on fiber analysis methods, where the fibers are carried in suspension. They are photographed in a flow cell and their properties are evaluated by digital image analysis. Three fields of fiber analysis are covered: Fiber morphology, pulp surface chemistry, and chemically induced swelling respectivel…
Tin particles that were prepared using three different capping agents, hydrobenzamide, citrate, and polyvinyl pyrrolidone (PVP) exhibited different particle sizes. The hydrobenzamide-capped Sn had the smallest particle size ( ∼ 50 nm ) and uniform distribution while the citrate and PVP-capped Sn had particle sizes of…
In this paper a simple general synthetic concept was used to generate dendritic core-shell architectures based on hyperbranched poly(ethylene imine) cores and different shells which contain aliphatic chains and poly(ethylene glycol) chains, respectively. Using these dendritic core-shell architectures as nanocarriers w…
Considering the industrial interest of poly-β-hydroxy butyrate (PHB) and its high production cost, work has been undertaken for the production of PHB by Alcaligenes eutrophus. Different industrial wastes (malt, soya, sesame, molasses, bagasse and pharmaceutical waste) were used as a cheap substrate to minimize the pro…
The lattice parameter of nanocrystalline ceria films prepared by sputtering was monitored as a function of annealing temperature. Within the temperature range of 150-420 degrees C, an equilibrium with atmospheric oxygen is established within a few hours, whereas grain growth does not occur. On the basis of the experim…
A tetrahedrally coordinated iron in framework substituted microporous AlPO-5 catalysts are shown to be active and selective for the hydroxylation of benzene to phenol, using nitrous oxide as the oxidant.
Effect of the sigma (σ) phase in Co-29Cr-6Mo alloy on corrosion behavior in saline solution has been investigated. The area fraction of the σ phase contained in Co-29Cr-6Mo alloy varies depending on the aging time at 1023 K. The σ phase is mainly observed at grain boundaries. The area fraction of the σ phase increases…
Abstract The Raman scattering from acoustical phonons of silicon quantum dots in glass matrix was investigated. Two peaks that correspond to symmetric and quadrupolar spheroidal vibrations were found. A model calculation for in‐ and off‐resonance scattering conditions was used, which considered the homogeneous broaden…
Nanoporous films of core‐shell iron nanoclusters have improved possibilities for remediation, chemical reactivity rate, and environmentally favorable reaction pathways. Conventional methods often have difficulties to yield stable monodispersed core‐shell nanoparticles. We produced core‐shell nanoclusters by a cluster…
We study the phase behavior of mixtures of oppositely charged nanoparticles, both theoretically and experimentally. As an experimental model system we consider mixtures of lysozyme and lysozyme that has been chemically modified in such a way that its charge is nearly equal in magnitude but opposite in sign to that of…