Materials Literature
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This article describes a facile and promising method to prepare uniform, non-spherical colloidal particles with shape and chemical anisotropies. We first synthesize polystyrene (PS) colloids with a concave multi-dimple structure, through a unique combination of two-stage dispersion polymerizations and a programmed fee…
Random bi-functional copolymers bearing fluorinated units and sol–gel forming units were prepared and used together with silica particles in a one-pot process for preparing superamphiphobic coatings. The copolymers P(FOEA-r-IPSMA) were prepared by atom transfer radical polymerization (ATRP) of 2-(perfluorooctyl)ethyl…
A simple and versatile synthesis method to form water soluble multifunctional nanoclusters using polyethylene glycol (PEG) functionalized poly(maleic anhydride-alt-1-octadecene) amphiphilic brush copolymers (PMAO-g-PEG) was presented. Simply by tuning the core size and the initial nanocrystal concentration, manganese…
We propose a scheme for simulation of the solute-driven dendritic solidification which accounts for the flows of liquid and motion of growing dendrites. The scheme is based on the multiphase-field method for calculating the solidification and the lattice Boltzmann method to simulate the fluid flows. Motion and rotatio…
A graphitic ordered mesoporous carbon (G-OMC) has been synthesized for the first time using mesoporous nickel oxide as a template and catalyst and dopamine as a carbon source. The probable formation mechanism for the preparation of G-OMC is also proposed. Characterization by X-ray diffraction, Raman spectroscopy and h…
The present investigation reports new results on optical properties of graphene‐metal nanocomposites. These composites were prepared by a solution‐based chemical approach. Graphene has been prepared by thermal reduction of graphene oxide (GO) at 90°C by hydrazine hydrate in an ammoniacal medium. This ammoniacal soluti…
We have studied the effect of chlorination on the dielectric performance of a barium titanate (BTO)–polymer film. Functionalization of BTO powder particles with chlorine (Cl) atoms and/or Cl-containing functional groups was achieved by a simple treatment using chlorinated solvents. The chlorinated BTO (Cl-BTO) particl…
Poly(ester amide)s (PEAs) are of interest for a diverse range of applications as their structures and properties can be readily tuned through the incorporation of a wide variety of monomers. In this work, the incorporation of the amino acids L-2,4-diaminobutyric acid (DAB) and homocysteine (HCY) was investigated with…
Studies on the effect of plasma protein binding on biosynthetic hydrogels on the long term cell viability and infiltration onto the hydrogel scaffolds were carried out. Three hydrogels, PALG–P (PALG-co-PEGDA), PALG–PA (PALG-co-PEGDA-co-AA) and PALG–PB (PALG-co-PEGDA-co-BMA) were prepared using a copolymer of poly(prop…
The mechanism of self-healing of a cross-linked epoxy system based on the diglycidyl ether of bisphenol A (DGEBA) and a new diamine cross-linker with two Diels–Alder (DA) adducts has been investigated. The location of the DA adducts on the diamine means that the cross-linker is the structural element that can be therm…
The evolution of the X-ray structure factor and corresponding pair distribution function of SiO2 has been measured upon cooling from the melt using high energy X-ray diffraction combined with aerodynamic levitation. Small changes in the position of the average Si-O bond distance and peak width are found to occur at ~1…
Seven new tris(β-diketonear-nate)ytterbium(III) complexes with the general formula [Yb(β-diketonate)3(5NO2phen)] (where the β-diketone is either 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione, 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedione, 1…
We report on the synthesis and characterization of single-crystal caged gold nanorods (CGNRs) which exhibited broadband plasmonic resonances. Redshift of plasmon resonance can be realized by increasing the length, whereas blueshift can be achieved by increasing either the overall width of the cage or the thickness of…
Magnesium aluminosilicate glasses doped with 0.2 mol% Sm2O3 (1 × 1020 Sm3+ cm−3) have been prepared in a very broad compositional range. The effect of the MgO, Al2O3 and SiO2 concentrations as well as the effect of partial substitution of MgO by CaO, SrO, BaO, ZnO or MgF2 have been studied. Increasing the network modi…
The recent development of synthesis processes to assemble graphene sheets into porous three-dimensional (3D) macroscopic structures are reviewed, including our efforts on 3D graphene structures. Mechanisms for building 3D graphene architectures and their composite materials are also summarized. The functional systems…
Magnetically-doped graphene systems are potential candidates for application in future spintronic devices. A key step is to understand the pairwise interactions between magnetic impurities embedded in graphene that are mediated by the graphene conduction electrons. A large number of studies have been undertaken to inv…
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La tecnica de electrospinning o electrohilado, ha sido ampliamente estudiada durante los ultimos anos gracias a la posibilidad de crear fibras en escala micro y nanometrica para una gran variedad de aplicaciones biomedicas, esta tecnica aporta a los elementos desarrollados diversas caracteristicas como: amplia superfi…
Article history: The present investigation reports, the novel synthesis of Copper and Copper oxide nanoparticles using Chemical reduction method and its physicochemical characterization. The nanoparticles have been prepared using Copper (II) succinate as precursor. Copper nanoparticles are initially formed and subsequ…
Isostructural tetranuclear clusters [Ln4(salen)6]·xH2O [Ln = Dy, 1·5.5H2O; Ho, 2·4.6H2O; Eu, 3·5.2H2O; salen = N,N'-ethylenebis(salicylideneiminato)dianion] were prepared by self-assembling the corresponding lanthanide ions and a quadridentate Schiff base. Interestingly, the Ln ions are surrounded by the N- and O-dono…