Materials Literature
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A homogeneous layer of silver sulfide or selenide was coated onto gold nanorods in aqueous solution by exposing Au/Ag core/shell nanorods to S2− or Se2− in an oxidizing environment. The formation of the silver chalcogenide layers was confirmed by transmission electron microscopy (TEM) and selective area electron diffr…
In our pursuit of luminescent lanthanide ion-based coordination polymers, we have isolated several complexes with nitrobenzoic acid ligands and characterized these by X-ray crystallography and luminescence spectroscopy. 2-Nitrobenzoic acid reacts with Eu(III) to form 1, which crystallizes in the P-1 space group, with…
We describe here the development of protective surface films on a Mg alloy in ionic liquids (ILs) based on the bis(trifluoromethanesulfonyl)amide (TFSA) anion. The film is shown to provide improved corrosion resistance to the alloy against humid environments as well as in the presence of chloride. Film formation is th…
The synthesis of the probe complex . and photophysical studies in aqueous media are described. . is designed to be luminescently responsive to Zn(II) in the presence of a competitive ionic mixture at pH 7.4. The structure of the complex is based upon a carboxylate functionalized azamacrocycle and possesses a chromopho…
Diatoms produce diverse three-dimensional regular silica structures with nanometer to micrometer dimensions and hold considerable promise for biological or biomimetic fabrication of nanostructured materials and devices. In this paper, a simple procedure for fabrication of gold nanostructures with complex morphologies…
The amphiphobic nature of carbon nanotubes allows them to stabilise droplets of water-insoluble monomers dispersed in the aqueous nanotube suspension, leading to a flexible route to electrochemical synthesis of useful nanoporous composites of nanotube doped conducting polymers, and potentially to other chemistry invol…
Reduction and reoxidation kinetics of Ni-based solid oxide fuel cell (SOFC) anodes were investigated over a range of temperatures between 600 and . Dense (no open porosity) two-phase (yttria-stabilized zirconia) samples, with and without small amounts of oxide additives (CaO, MgO, ), were fabricated and then reduced i…
Metal-borohydrides M(BH4)n (M=Mg, Sc, Zr, Ti, and Zn; n=2–4) were synthesized by mechanical milling process according to the following reaction; MCln+nLiBH4/nNaBH4→M(BH4)n+nLiCl/nNaCl. Then the thermal desorption properties of M(BH4)n were investigated by gas-chromatography and mass-spectroscopy combined with thermogr…
Transparent nanocrystalline Cu2O films (Eg = 2.6 eV) were electrodeposited from a dimethyl sulfoxide medium; these films exhibit interesting optical and photoelectrochemical properties, and can be converted to transparent CuO films.
Star-shaped complex [Fe(III)[Fe(III)(L1)2]3] (3) was synthesized starting from N-methyldiethanolamine H2L1 (1) and ferric chloride in the presence of sodium hydride. For 3, two different high-spin iron(III) ion sites were confirmed by Mössbauer spectroscopy at 77 K. Single-crystal X-ray structure determination reveale…
Functionalization of ultrasmall semiconductor nanoparticles to develop new luminescent probes that are optically bright, stable in aqueous environments, and sized comparably to small organic fluorophores would be of considerable utility for myriad applications in biology. Here, we report one of the first examples of t…
A new 3D Cu(II) complex [Cu1.5(N3)2(isonicotinate)]n [1], which features two types of bridging modes for azide (mu(1,1) and the rare asymmetric mu(1,1,3)) where the three bonds of the mu(1,1,3)-N3(-) group to Cu exhibit three different distances, has been synthesized and characterized, and magnetic measurements indica…
In order to interpret catalytic data on iron zeolites in terms of structure-activity relationships, reliable characterisation methods are needed. In particular, the nuclearity of the iron species is an important issue, since it is often invoked to explain catalytic activity. In the present contribution, we address the…
Examples of C-4 symmetric, medium MW conjugates incorporating 12 glucose or galactose groups linked via four dendritic wedges to a central Gd complex have been characterised; their enhanced relaxivity is interpreted in terms of effective motional coupling and large contributions from second sphere water molecules.
We have investigated the effect of Cr poisoning on various cells which consist of either (LNF) or (LSM) as a cathode and either yttria-stabilized zirconia (YSZ) or alumina-doped scandia stabilized zirconia (SASZ) as the electrolyte. It was found that the cathodic overvoltage was almost the same for cells with LNF cath…
Reduction of optical scattering in turbid biological tissues using nonreactive chemical agents has potential applications for light-based diagnostics and therapeutics. Optical clearing effects by exogenous chemical agents, in particular sugars and sugar alcohols, have been found to be temporary with tissue rehydration…
The thermomechanical processing consisting in cold work (true strain e=0.3–1.9) followed by a post-deformation annealing (200–700°C temperature range) is applied to the equiatomic Ti–Ni alloy. The evolution of the structure, substructure and functional properties of the material is studied. For all levels of cold work…
Multiwalled carbon nanotubes, covalently functionalised with chlorinated polypropylene, were used as the filler material in polymer nanotube composites. Both polystyrene and poly(vinyl chloride) were used as the polymer matrix. The functionalised nanotubes could be stably dispersed in tetrahydrofuran allowing the prep…
A multilayer coating (or film) of nanometer-thick layers can be made by sequential adsorption of oppositely charged polyelectrolytes on a solid support. The method is known as layer-by-layer assembly (LBL). No special apparatus is required for LBL and nanofilms can be prepared under mild, physiological conditions. A m…
The functionalisation of single wall carbon nanohorns via 1,3-dipolar cycloaddition has been achieved, and the products have been characterised by spectroscopy, microscopy and thermogravimetry.