Materials Literature
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contrast agents are small molecule chelates of gadolinium [Gd(III)] that affect bound water proton relaxivity. Both the small size and monomeric nature of these agents ultimately limits the image resolution enhancement that can be achieved for both contrast enhancement and pharmacokinetic/biodistribution reasons. The…
Dynamically oleophobic surfaces for alkane liquids, such as n-decane, n-dodecane and n-hexadecane, were successfully prepared using a simple sol–gel mixture containing 3,3,3-trifluoropropyltrimethoxysilane (FAS3) and tetramethoxysilane (TMOS). Due to the enhancement of the motion of functional groups by addition of TM…
The purely hexagonal phase of ultrasmall (~10 nm) NaYF(4) nanocrystals (NCs), containing different Eu concentrations, has been obtained by a modified co-thermolysis method. Detailed investigations of the excitation and relaxation mechanisms of the Eu ions in such NCs are reported. Based on the photoluminescence excita…
Metal corrosion is an electrochemical reaction between the environment and a metal, in which microbes are thought to play a very important role. The rates at which various types of metals corrode are dependent upon environmental conditions as well as on the type of metals. The most well studied bacteria involve…
Semiconductor-metal nanocomposite materials composed of ZnS-AgInS 2 solid solution (ZAIS) nanoparticles and SiO 2 -coated Au particles were prepared, the particle distance between ZAIS and Au being precisely adjusted in nanometer scale by changing the thickness of the SiO 2 coating layer on Au core particles. The SiO…
Bodipy laser dyes are highly efficient but degrade rapidly in solution by reacting with in situ generated singlet oxygen ((1)O(2)). To increase the lasing lifetimes of these dyes, we have designed and synthesised two different congeners of the widely studied Pyrromethene 567 (PM567) by substitution at the boron centre…
The structural and optoelectronic properties of ZnO nanopillars (ZnO-NPs) grown on Si substrates by the vapor transport deposition method were investigated. In particular, by varying the deposition duration and hence the morphology of the vertically aligned ZnO-NPs, the resultant field emission characteristics were sy…
Responsive nanohelices can be self-assembled via asymmetric coordination bonding between AgNO3 and melamine. Silver nanochains composed of nanoparticles can be synthesized simply by photo-reduction of the above complex.
Phenanthroline-based hexadentate ligands L(1) and L(2) bearing two achiral semicarbazone or two chiral imine moieties as well as the respective mononuclear complexes incorporating various lanthanide ions, such as La(III), Eu(III), Tb(III), Lu(III), and Y(III) metal ions, were synthesized, and the crystal structures of…
The intermetallic compound ZnSb is an electron poor (II–V) semiconductor with interesting thermoelectric properties. Electrical resistivity, thermopower and thermal conductivity were measured on single crystalline and various polycrystalline specimens. The work establishes the presence of impurity band conduction as a…
Herein we report a green approach for the synthesis of metal/metal oxide nanoparticle decorated multiwalled carbon nanotubes using focused solar radiation. The synthesis method demonstrates a large scale, cost effective and spontaneous production of carbon nanotube supported metal/metal oxide nanoparticles for energy…
The purpose of this study was to evaluate two novel liposomal formulations of cisplatin as potential therapeutic agents for treatment of the F98 rat glioma. The first was a commercially produced agent, Lipoplatin™, which currently is in a Phase III clinical trial for treatment of non-small cell lung cancer (NSCLC). Th…
Segmented polyurethane multiblock polymers containing polydimethylsiloxane and polyether soft segments form tough and easily processed thermoplastic elastomers. Two commercially available examples, Elast-Eon E2A (denoted as E2A) and PurSil 35 (denoted as P35), were evaluated for molecular and mechanical stability afte…
We report an inverted structure of quantum-dot light emitting diodes (QLEDs) with a metal oxide as a cathode buffer. The Al doped zinc oxide (AZO) with Al concentration from 0 to 30% was used as a charge transport layer in QLEDs which were processed at the temperature of 225 °C. It is found that the conductivity of AZ…
Spherical palladium nanocrystals were generated from aqueous Na2[PdCl4] via photosynthetic reactions within green microalgae (Chlorella vulgaris). Electrospun chitosan mats were effective for immobilizing these biogenic nanocrystals, as a material for recycling as a catalyst for the Mizoroki–Heck cross-coupling reacti…
An algorithm is presented which determines the equivalence of two settings of a (3 + d)-dimensional superspace group (d = 1, 2, 3). The algorithm has been implemented as a web tool findssg on SSG(3+d)D, providing the transformation of any user-given superspace group to the standard setting of this superspace group in…
Reduction of graphene oxide at the nanoscale is an attractive approach to graphene-based electronics. Here we use a platinum-coated atomic force microscope tip to locally catalyse the reduction of insulating graphene oxide in the presence of hydrogen. Nanoribbons with widths ranging from 20 to 80 nm and conductivities…
The luminescence, excited-state absorption, and singlet oxygen generation measurements were performed on three kinds of halogenated corroles: monohydroxyl halogenated corroles (Corrole-F, Corrole-Cl, Corrole-I), peripherally fluorine-substituted corroles (F0, F5, F10, F15), and gallium complexes (F10-Ga, F15-Ga). The…
Tight-binding calculations predict that the AA-stacked bilayer graphene has one electron and one hole conducting band, and that the Fermi surfaces of these bands coincide. We demonstrate that as a result of this degeneracy, the bilayer becomes unstable with respect to a set of spontaneous symmetry violations. Which of…
The partial oxidation of methane to methanol presents one of the most challenging targets in catalysis. Although this is the focus of much research, until recently, approaches had proceeded at low catalytic rates (<10 h(-1)), not resulted in a closed catalytic cycle, or were unable to produce methanol with a reasonabl…