Materials Literature
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Devices based on conducting polymers offer great promise for interfacing with cells. Here, we use vapour phase polymerisation to create a biofunctional composite material of the conducting polymer poly(3,4-ethylenedioxythiophene):tosylate (PEDOT:TOS) and the biologically relevant poly(ethylene glycol) (PEG). On the ad…
Nanocrystals of BaF2 precipitate during controlled annealing of silicate glasses composed of SiO2, Al2O3, K2O, Na2O, BaF2 and BaO. Structural characteristics such as size, shape, volume fraction and size distribution of nanoparticles in the glass matrix were studied by anomalous small angle x-ray scattering (ASAXS). F…
We have demonstrated an extremely facile procedure for the preparation of 3D porous manganese oxide nanostructures by pyrolysis of Mn-based coordination polymer nanowires. The highly aligned and ultralong Mn-based polymer nanowires with high chemical purities were prepared using nitrilotriacetic acid (NA) as a chelati…
Crystals formed by polymers are typically nanoscale in at least one dimension. The directional control of properties via precise control of the orientations of polymer nanocrystals has strong relevance to technical applications in various areas. Polymer crystals may exhibit preferential orientation when they are forme…
Ongoing progress in nanotechnologies has led to their implementation for in vivo diagnostic and therapy. Thus, the main applications of inorganic nanoparticles are imaging for diagnosis and cell tracking, photothermal and drug-delivery therapies. Following nanoparticles in vivo administration, the systemic circulation…
The chemical composition and morphology of M7C3 eutectic carbides in 19 mass% Cr–2.8 mass% C white iron with up to 4.7 mass% V additions have been studied. Eutectic colonies are mainly composed of a very fine rod-like carbides at the center and become coarser rod-like or blade-like with increased distance from the cen…
A glass of the composition 2SrO·TiO2·2.75SiO2 was melted. Cooled samples were polished and thermally annealed at 970 °C for 10 min to 20 h to achieve surface crystallisation of Sr2TiSi2O8 fresnoite. At the surface, the crystals were immediately oriented with their crystallographic c-axes perpendicular to the surface.…
Xanthate functionalization of Aspergillus versicolor mycelia (AVM) was carried out to synthesize cadmium sulphide (CdS) nanoparticles and for the removal of cadmium ions from aqueous solution. The synthesized nanoparticles were characterized by spectroscopic and microscopic techniques. Fourier transform infrared (FTIR…
A surface modified carbon monolith (m-CM) was successfully synthesized by carbonization of a waste paper precursor, followed by a simple surface modification with a HNO3 solution. The morphology, pore structure, and surface functional groups of the as-obtained m-CM are characterized by scanning electron microscopy (SE…
Polycrystalline samples of Ca3Al1−xZnxSb3, with x = 0.00, 0.01, 0.02, and 0.05 were synthesized via a combined ball milling and hot pressing technique and the influence of zinc as a dopant on the thermoelectric properties was studied and compared to the previously reported transport properties of sodium-doped Ca3AlSb3…
In this work, monodispersed, well-shaped platinum (3.2 - 6.4 nm), rhodium (2.4 - 5.1 nm), palladium (3.2 - 5.3 nm) nanoparticles capped with poly(vinylpyrrolidone) were synthesized by a polyol reduction method in an ethylene glycol solution at temperature of 190℃. The influences of synthetic parameters on the size and…
In graphene edges or nanographene, the presence of edges strongly affects the electronic structure depending on their edge shape (zigzag and armchair edges) as observed with the electron wave interference and the creation of non-bonding π-electron state (edge state). We investigate the edge-inherent electronic feature…
We describe a facile method to functionalize semiconducting polymer dots (Pdots) with polyelectrolytes. The polyelectrolyte coating dramatically improves the colloidal stability of the Pdots in solutions which are either of high ionic strength or contain bivalent metal ions: this feature allows Pdots to be used under…
Coupled nanostructures with “spotted” and “core–shell” morphologies have been obtained by a controlled heterogeneous nucleation of cadmium sulfide nanoparticles (CdS-NPs) onto the surface of zinc oxide nanotetrapods (ZnO-TPs). This result has been obtained by means of a modified chemical bath deposition reaction, with…
A new approach for the synthesis of Prussian blue type nanoparticles containing nanocomposites in the form of beads or films, as well as their corresponding aqueous colloids, was developed by using a water-soluble alginate matrix as a template and as a stabilizing agent. This method consists of the step-by-step buildi…
Both pH and pCl sensing plates were fabricated, and the H + and Cl − distributions in the crevice solution for 18Cr-10Ni-5.5Mn stainless steel were visualized at 0.3 V (vs. Ag/AgCl, 3.33 M KCl) in 0.01 M NaCl (pH 3.0, adjusted with H 2 SO 4 ) at 298 K. While the pH inside the crevice gradually decreased with time, no…
All metal aromatic clusters like Be 3 M 2 , and Al 4 M 2 (M = Li and Na) are found to adsorb molecular hydrogen with considerable interaction energies and the gravimetric capacity is found to be in the range 9–11 wt%.
A simple and rapid technique was established for synthesis of ZrO2 nanoparticles from zirconium ethoxide (Zr(OEt)4) and zirconium hydroxide (Zr(OH)4) as the precursors, using the sub- or supercritical hydrothermal method. The precursors were treated in a batch-type reactor with the reaction temperatures between 200 an…
This paper reports the design and synthesis of fluoroalkyl-functionalized polyhedral oligomeric silsesquioxane (FPOSS)-based shape amphiphiles with two distinct topologies: (i) mono-tethered FPOSS-poly(ε-caprolactone) (PCL) and (ii) FPOSS tethered with two polymer chains possessing different compositions, namely, poly…
The Ni1–xCuxFe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0) ferrites have been prepared by sol-gel method in order to obtain homogeneous crystal structure and they are sintered at high temperature. The effect of copper doping on the structural and magnetic properties of nickel ferrites sintered at 10…