Materials Literature
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Ethylenediamine plasma polymerization has been investigated to modify the surface of quartz particles to optimize the nitrogen concentration of coatings produced via a rotating barrel plasma reactor. Plasma polymerized ethylenediamine (ppED) films were deposited at varying powers, flow rates, and polymerization times.…
Lipases are one of the most important biocatalysts for biotechnological applications. Immobilization is an efficient method to increase the stability and reusability of lipases. In this study, nanoporous gold (NPG), a new kind of nanoporous material with tunable porosity and excellent biocompatibility, was employed as…
OBJECTIVE: Double loaded micelles (DLM) in which paclitaxel (PTX) and docetaxel (DTX) were co-solubilized with monomethoxy poly(ethylene glycol)-block-poly(d,l-lactide) (mPEG-PLA) copolymer were prepared and evaluated in an aim to investigate the effect of a combination of PTX and DTX on the stability of mPEG-PLA mice…
The carrier transport of chemical vapor deposition (CVD) prepared films of the room temperature organic-based magnet V[TCNE]x (TCNE = tetracyanoethylene; x ~ 2) over a broad temperature and magnetic field range is reported. Due to disorder the [TCNE](·-) sites are located in statistically different environments, and t…
On-demand degradable polymer particles are fabricated via electrospraying of a solution of acetal-protected dextran that further includes 2-(4-methoxystyryl)-4,6-bis(trichloromethyl)-1,3,5-triazine as a photoacid generator. The illumination of UV light gives rise to photoacid and activates the catalytic deprotection o…
Suspensions of small fibres are known to produce clusters of particles during sedimentation, independently of fluid shear and Brownian motion. This phenomenon, which is due to hydrodynamic interactions at low Reynolds number, has been predicted theoretically and observed in experiments and numerical simulations. We hy…
This study compares regional differences in benthic diatom communities exposed to similar stresses in Canada and Portugal. Diatoms were sampled in the Água Forte Stream, Aljustrel (SW Portugal) and in the Little River, New Brunswick (SE Canada), both streams surround the respective zinc mine and are subject to similar…
A review of preparation of chiral carbon nanotubes (CNTs) and carbon nanotube chiral composites is presented. Novel chiral separation science and technology based on CNTs is analyzed and discussed, with the emphasis in two topics. The first topic concerns the possibility of application of chiral CNTs in resolution and…
The objective of this study was to investigate phosphate removal using magnetic alginate-layered double hydroxide (LDH) composites. The magnetic composites were prepared by entrapping synthetic magnetic iron oxide and calcined Mg-Al LDH in polymer matrix (alginate). Results showed that the magnetic composites (2% magn…
(75)As and (31)P NMR studies are performed in PrCoAsO and NdCoPO respectively. The Knight shift data in PrCoAsO indicate the presence of an antiferromagnetic interaction between the 4f moments along the c axis in the ferromagnetic state of Co 3d moments. We propose a possible spin structure in this system. The (75)As…
Powder SrPrZnRuO6, SrPrCoRuO6, SrPrMgRuO6 and SrPrNiRuO6 double perovskites were synthesized by the solid-state reaction method, and their crystal structure was investigated by Rietveld analysis (using the symmetry-mode procedure) by x-ray, synchrotron and neutron powder diffraction data. SrPrMRuO6 materials are monoc…
Abstract Three-dimensional self-assembled rugby-ball-shaped microarchitectures of tetragonal Na0.5La0.5MoO4:Eu3+ crystal structure were synthesized by facile hydrothermal method at 200°C for 8 h using ethylenediaminetetraacetic acid (EDTA) as surfactant. Structure and morphology of Na0.5La0.5MoO4:Eu3+ were investigate…
Kaolinite–silica nanocomposites with a green porosity ranging from 75% to 87% were prepared using a freeze‐casting technique. The initial solids loading values (kaolinite platelets plus silica nanospheres) greatly influence the sintering behavior as well as the phase and strength of the resulting porous composites. Th…
ABSTRACT Diblock and triblock dendron–polymer conjugates containing biodegradable polyester dendron blocks and polyethylene glycol (PEG) polymer were synthesized using the Diels–Alder “click” cycloaddition reaction. PEG polymers with furan‐protected maleimide functionality were synthesized and reacted with biodegradab…
The polyaromatic terdentate ligand 6-(azaindol-1-yl)-2,2′-bipyridine (L7) combines one 5-membered chelate ring with a fused 6-membered chelate ring. It is designed to provide complexation properties intermediate between 2,2′;6′,2″-terpyridine (L1) (two fused 5-membered chelate rings) and 2,6-bis(azaindol-1-yl)pyridine…
A docetaxel (DX) lipid conjugate 2'-(2-bromohexadecanoyl)-docetaxel (2-Br-C16-DX) is synthesized to enhance the drug loading, entrapment, and retention in liquid oil-filled lipid nanoparticles (NPs). The conjugate is successfully entrapped in the previously optimized NPs with an entrapment efficiency of 56.8%. In-vitr…
We firstly introduce a facile method for the site-specific direct physical exfoliation of few-layer graphene sheets from cheap and easily enlargeable graphite grown on a Ni foil using an optimized polydimethylsiloxane (PDMS) stamp. By decreasing the PDMS cross-linking time, the PDMS elasticity is reduced to ∼52 kPa, s…
Abstract Background Aluminum (III) hydroxy‐gels find important applications in areas such as paint pigments, pharmaceuticals and water treatment or toxic metal sequestration. Since the method of preparation may affect their properties and performance, in this work we prepare aluminum hydroxy‐gels from either chloride…
This study explored a simple and fast method utilizing ultraviolet (UV) irradiation to synthesize CdTe/CdS/ZnS QDs in aqueous solution. Based on the reaction of photolysis and chemical deposition, the CdS and ZnS shell can be successively deposited around the thiol-capped CdTe cores through the interaction of Cd²⁺/Zn²…
Thorough elastic analysis of porous silicon carbide preforms fabricated using two different polymer waxes as pore formers is carried out. Both the amount and the mixture ratio of the waxes were varied to fabricate preforms with different pore morphologies and porosities in the range of 27–67 vol%. Results show that bo…