Materials Literature
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The development of nanocomposites (a matrix, often polymeric, enhanced by a particle with a nanometer-sized dimension) has expanded dramatically in recent years with a particular focus on materials with complex microstructure and nanostructure. Such composites rely on formation of a connected network of particles thro…
In the present work, the non-resonant Raman-active modes are calculated for several diameters, chiralities and sizes for homogeneous and inhomogeneous bundles of single-walled carbon nanotubes (BWCNTs), using the spectral moment's method (SMM). Additional intense Raman-active modes are present in the breathing-like mo…
The jumping ring experiment has become central to liquid nitrogen shows given as part of the outreach and open day activities carried out within the University of Bath. The basic principles of the experiment are described as well as the effect of changing the geometry of the rings and their metallurgical state. In gen…
The crystal structures of two pseudopolymorphic modifications of the glucocorticoid hydrocortisone were determined, in addition to the known structures of the 2-propanol ( 1 ), methanol ( 2 ) and pyridine ( 3 ) solvate reported recently. The chloroform solvate ( 4 ) and the N, N ′-dimethylformamide solvate ( 5 ) cryst…
A continuing challenge in materials design is the achievement of greater operational efficiency through improvements in performance criterion, particularly high strength and service life-time characteristics. In this study we report on the evaluation of di-sodium hydrogen phosphate (DSHP) as an inhibitor for the stres…
Using the least-squares refinement procedure, high-performance Brown-Wu bond-valence parameters, r(0) and n, reported for the Sn(2+)/O(2-), Sb(3+)/O(2-), Te(4+)/O(2-) and I(5+)/O(2-) ion pairs have been converted into the commonly used bond-valence parameters, r(0) and b. The r(0) and b values obtained can be recommen…
Blends of polystyrene/poly(methyl methacrylate) (PS/PMMA) (30/70) prepared by simple melt mixing form a droplet (PS) in-matrix (PMMA) morphology. It is found that addition of a carefully designed copolymer PS-b-P(S-ran-MMA) (SSM) compatibilizer could convert the morphology into a co-continuous system. Indeed, the cont…
Quantum dots have been delivered directly across the plasma membrane to the cytosol of living cells using a combination of a cationic peptide, polyarginine, and a hydrophobic counterion, pyrenebutyrate. Quantum dot delivery did not disrupt the plasma membrane and bypassed the barrier of endocytic vesicles. Cellular up…
We present a novel class of nanoparticle-decorated surfaces: amine-functionalized silica nanoparticles covalently attached to poly(styrene- random -acrylic acid) films and carboxylic acid-terminated self-assembled monolayers (SAMs). The dependence of the particle attachment kinetics on the concentration of particles i…
Nephrogenic systemic fibrosis (NSF) is a systemic fibrosing disorder characterized by the development of large indurated plaques on the skin, primarily in patients with end-stage renal disease (ESRD). Skin biopsy reveals an increased frequency of CD34(+) and Factor XIIa+ cells. Microscopic calcification has been repor…
Abstract Well‐defined segmented block copolymers were studied as the number and position of hard segments in the chain was varied. The hard segments were diamides of uniform length ( A ), and the synthesized copolymers were mono‐, di‐, tri‐ or multiblock using the soft segment ( B ), poly(tetramethylene oxide), with a…
Abstract In this article some metal hydroxystannates were synthesized. It shows that the ZHS with Fe 2 SnO 3 .3H 2 O imparts fairly good flame retardance to the plasticized poly (vinyl chloride) (PVC). The thermal stability and flammability on heating and burning were explored by TG/DTA. Study on mechanical properties…
The use of scanning electron microscope (SEM) images as references for threshold tuning of X-ray micro/nano computed tomography reconstruction is proposed. In this research, high-resolution SEM images were used to provide a good estimation of the fibre diameter in the surface of gas diffusion layers (GDL) (5–10 µm). T…
The dielectric-response functions of crystalline ropes of metallic single-walled carbon nanotubes were determined from time-dependent density-functional theory in the random-phase approximation. Interband transitions and plasmonic excitations were studied as a function of momentum transfer. The impact of the tube diam…
Two isostructural dinuclear lanthanide(III)/Schiff-base complexes [{Ce1.5Eu0.5(clapi)}2]·2CH3CN (1) and [{La1.5Eu0.5(clapi)}2]·2CH3CN (2) {H3clapi = 2-(5-chloride-2-hydroxyphenyl)-1,3-bis[4-(5-chloride-2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine} have been prepared by template procedure and characterized by el…
An improved and scalable process for the large-scale production of zafirlukast (Accolate), an important drug for asthma, is discussed along with impurity and scale-up-related issues.
Abstract A new fluorescent silsequioxane precursor with tuned optical properties and controlled aggregation properties is designed. The two cyclohexyl moieties introduced in the molecular structure allow the formation of very good quality films. The J‐aggregated structure is transcribed into the solid by photoacid‐cat…
It is demonstrated that both transmission and reflection coefficients associated with the Klein paradox at a step barrier are positive and less than unity, so that the particle-antiparticle pair creation mechanism commonly linked to this phenomenon is not necessary. Because graphene is a solid-state testing ground for…
Abstract A series of Pd II derivatives of the [P 2 W 21 O 71 (H 2 O) 3 ] 6– heteropolytungstate with the general formula [Pd x {WO(H 2 O)} 3– x {A,α‐PW 9 O 34 } 2 ] (6+2 x )– ( x = 1–3) is described. These compounds are obtained by the reaction between [Pd II (NO 3 ) 2 ] · H 2 O and the corresponding vacant polyoxomet…
The binary liquid−liquid equilibrium (LLE) data for the system N -methylformamide (NMF) + n -hexadecane from (288.15 to 318.15) K and the ternary LLE for the systems NMF + heterocyclic nitrogen compounds (quinoline, pyridine, pyrrole, aniline, indole) + n -hexadecane at 298.15 K were analytically determined at atmosph…