Materials Literature
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We report the design and synthesis of Ir-complex functionalized CdSe/ZnS quantum dots (QDs), in which the QD plays a key role in imaging, while the Ir-complex acts as a sensitizer to produce singlet oxygen; this conceptual design presents a novel scheme in both bio-imaging and photodynamic therapy.
Multigram quantities of Cu nanowires ca. 25 nm in diameter and µm in length have been produced by AC electrodeposition into porous aluminium oxide (PAO) templates. Multiple, large-area Al electrodes (5 × 11 cm or 10 × 25 cm) are anodized in parallel at 25.0 V in 0.3 M H2SO4(aq) using custom built baths. The pores are…
{Fe[Gd(2)bpy(DTTA)(2)(H(2)O)(4)](3)}(4-) is a self-assembled, metallostar-structured potential MRI contrast agent, with six efficiently relaxing Gd(3+) centres confined into a small molecular space. Its proton relaxivity is particularly remarkable at very high magnetic fields (r(1) = 15.8 mM(-1) s(-1) at 200 MHz, 37 d…
Discotic liquid crystals based on triindole, a novel redox active central core, have been synthesized and their mesomorphic behaviour investigated.
We report on real molecular complexes and propose strategies that explore the possibility of implementation of specific quantum computation architectures with molecular spin systems. We focus on Cr3+ carboxylate derivatives and use the Loss-DiVincenzo scheme as reference.
The steady-state oxygen permeation through polycrystalline , synthesized by a citric acid-based technique and sintered at , has been measured as a function of oxygen gradient, temperature , and membrane thickness . In agreement with earlier reports, the membranes show high permeation rates, comparable to those found f…
With light scattering titrations, we show that complex coacervate core micelles (C3Ms) form from a diblock copolymer with a polyelectrolyte block and either an oppositely charged polyelectrolyte, a diblock copolymer with an oppositely charged polyelectrolyte or a mixture of the two. The effect of added salt and pH on…
A "giant magnetocaloric effect" discovered in 1997 for Gd5Si2Ge2 near room temperature has triggered optimism that environmentally-friendly, solid-state magnetic refrigeration may be viable to replace gas-compression technology in the near future. Gd5Si2Ge2 is one member of an extensive series of rare-earth compounds,…
Nanocrystalline yttria‐stabilized zirconia (YSZ) powders with 8 mol% Y 2 O 3 have been produced using smoldering combustion synthesis with glycine as fuel and nitrate as oxidizer. The YSZ powders prepared by using different glycine to nitrate ratios (0.20–1.0) have been characterized by X‐ray diffraction (crystallite…
A numerical method is proposed for predicting solubility of drugs in water-PEG 400 mixtures based on the Jouyban-Acree cosolvency model. The accuracy of the proposed method is evaluated by computing mean percentage deviation (MPD) and compared with that of log-linear model of Yalkowsky. The overall MPDs of the Jouyban…
A chiral cationic surfactant that can form vesicle-like assemblies in pure water and fibrous aggregates in mixtures of water and alcohols was synthesized. Silicas having helical mesoporous nanostructures were prepared from TEOS using the self-assemblies of this surfactant as templates in mixtures of water and alcohols…
Abstract The equilibrium structural parameters, high‐ and low‐frequency dielectric tensors, Born effective charges, and Γ‐point vibrational frequencies of bulk Al 2 O 3 corundum are calculated by using the periodic, ab initio program CRYSTAL, which adopts an all‐electron Gaussian‐type basis set. The effect of basis se…
A generic design principle based on the use of organometallic (Li or Mg) reagents for the substitution of the fluoro ligands in difluoroboradiazaindacene is described. A library of compounds bearing various substituents (butyl, phenyl, naphthyl, pyrenyl, ethynylnaphthyl, ethynylfluorenyl, ethynylcarbazoyl, ethynylpery…
Desorption of bound and unbound water molecules from the nanoporous coordination framework ErIII[CoIII(CN)6].4(H2O) to form the apohost, ErIII[CoIII(CN)6], proceeds via a single crystal to single crystal transformation in which the Er(III) cations change from 8- to 6-coordinate; dehydration results in a striking chang…
A new bisboronate with five six-membered ring heterobicycles was prepared by reaction of [2-(2-hydroxy-4-diethylaminobenzylidene)amino]-5-nitroaminophenol and 1,4-phenyldiboronic acid, and its quadratic nonlinear optical (NLO) response was compared to that of a related monoboronate species. A computational investigati…
A new approach to the evaluation of the accessibility of acid sites in microporous/mesoporous materials is developed and tested using a series of dealuminated mordenites. This approach is based on an IR-spectroscopic study of the consecutive adsorption of substituted alkylpyridines (pyridine, 2,4,6-trimethylpyridine,…
We have devised a novel route towards a nanoscopically striped surface pattern with long range order the self-assembly of an ABC triblock terpolymer thin film exposed to an in-plane electric field. the interplay between surface interactions and the effect of the electric field the lamellae were oriented both perpendic…
Layer-by-layer approaches to the fabrication of nanostructured polymer assemblies have contributed to the design of thin films and composites of interest in a variety of areas. Here, we highlight recent contributions from our laboratory toward the design of multilayered assemblies that erode controllably and predictab…
A detailed model of the diffraction of plane and Gaussian beams on plane uniform phase Bragg gratings based on Kogelnik's theory of coupled waves is presented. The model describes transmitting gratings with arbitrary orientation in a plane-parallel plate taking into account spectral width and angular divergence of las…
Ground state structures and energies are predicted for (MO2)n, where n = 1 to 8 and M is one of three isovalent cations, titanium(IV), zirconium(IV) and hafnium(IV), with the minimised binding energies calculated using Density Functional Theory. An increased number of single coordinated oxygen atoms, as opposed to mor…