Materials Literature
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We report here the use of dendrimer-stabilized silver nanoparticles (Ag DSNPs) for the highly sensitive and selective colorimetric detection of mercury ions (Hg2+) in aqueous solution. In this study, amine-terminated generation 5 poly(amidoamine) dendrimers were employed as stabilizers to complex Ag+ ions for the subs…
Polycaprolactone (PCL) is frequently used as the base polymer in scaffolds targeted for tissue engineering applications. However, in the absence of further surface modification, the lack of functional moieties on the PCL chain results in non-ideal surface properties of such scaffolds, especially in terms of the inabil…
The synthesis of a new endohedral ten-vertex Zintl ion cluster, [Fe@Sn10](3-), isoelectronic with [Fe@Ge10](3-), is reported. In an attempt to place this new cluster within the context of the known structural chemistry of the M@E10 family (M = transition metal, E = main group element), we have carried out a detailed e…
A series of amphiphilic conetworks (APCNs) with well-defined molecular structures were prepared via a copper-catalyzed 1,3-dipolar azide–alkyne cycloaddition (CuAAC) of tetrakis(2-propynyloxymethyl)methane (TMOP), diazide end-functionalized triblock copolymers of poly(ε-caprolactone) with poly(ethylene glycol) (N3-PCL…
Coordination polymers and metal-organic rotaxane frameworks are reported where the organic linker is replaced by functionalised inorganic clusters that act as bridging ligands.
Many disordered systems experience a transition from a fluid-like state to a solid-like state following a sudden arrest in dynamics called jamming. In contrast to jamming in spatially homogeneous systems, jamming in hoppers occurs under extremely inhomogeneous conditions as the gravity-driven flow of grains enclosed b…
Disulfide- and acetal-functionalized comb-like copolymers (SACP) with poly(ε-caprolactone) (PCL) and poly(ethylene glycol) (PEG) side chains and a polymethacrylate backbone were synthesized and self-assembled for in vitro encapsulation and release of an anticancer drug, doxorubicin (DOX). Three step reactions includin…
In the context of producing enhanced therapeutics for regenerative medicine, our laboratory develops gene-activated matrices (GAMs) using non-viral gene therapy (GT) in combination with collagen-based scaffolds engineered specifically for tissue repair. Non-viral vectors have been referred to as a minority pursuit in…
The semiconductor mixed oxide photocatalyst CsTaWO6 was prepared via an aqueous sol–gel citrate route for the first time. The mild reaction conditions yield smaller primary particle sizes and larger specific surface areas than the conventional solid state reaction. The photocatalytic properties are determined using bo…
Homogeneous and crack-free AlN films have been epitaxially grown on 2 inch Si (111) substrates by pulsed laser deposition (PLD). By optimising the laser rastering and PLD growth conditions, the 2 inch-diameter single-crystalline AlN films exhibit excellent thickness uniformity with a root-mean-square (RMS) inhomogenei…
The design and engineering of innovative biopolymer-based biomaterials for a variety of biomedical applications should be based on the understanding of the relationship between their nanoscale structure and mechanical properties. Down the road, such understanding could be fundamental to tune the properties of engineer…
A new allotropic form of carbon is proposed. The molecular structure of a cavernous C72 molecule has been optimized at the density functional theory level. The structure belonging to the Oh point group was found to be a minimum on the potential energy surface. Current-density calculations show that the gaudiene molecu…
Pr and N co-doped ZnO (Pr:N:ZnO, doping concentration: 1 mol% Pr, 0.36 mol% N) was synthesized using an annealing method under an atmosphere of NH3 gas in a custom stainless steel autoclave. Scanning electron microscopy (SEM) was used to characterize the morphology of Pr:N:ZnO. The structure and chemical composition o…
A novel, rapid and highly sensitive fluorescence turn-on assay for the detection of biothiols (glutathione, and L-cysteine), histidine and threonine was developed. Water-soluble CuInS2 ternary quantum dots (QDs) capped by mercaptopropionic acid (MPA) were directly synthesized in aqueous solution, and then functionaliz…
A configuration of three-dimensional Ni-Si nanocable array anodes is proposed to overcome the severe volume change problem of Si during the charging-discharging process. In the fabrication process, a simple and low cost electrodeposition is employed to deposit Si instead of the common expansive vapor phase deposition…
Polymeric reverse osmosis membranes were modified with antifouling polymer brushes through a 'layer by layer' (LBL) mediated method. Based on pure physical electrostatic interaction, the attachment of LBL films did not alter separation performance of the membranes. In addition, the incorporation of an LBL film also he…
The effects of titanium content on weld microstructure and inclusion characteristics have been studied using the two different bainitic welds fabricated to have similar oxygen content. Analytical transmission electron microscopy analysis with thin foil specimens was carried out to investigate inclusion characteristics…
Cases reporting traumatic injuries to the brain and spinal cord are extended range of disorders that affect a large percentage of the world's population. But, there are only few effective treatments available for central nervous system (CNS) injuries because the CNS is refractory to axonal regeneration and relatively…
Chiral porous metal-metallosalan frameworks are constructed from an unsymmetrical chiral pyridinecarboxylate ligand derived from Ti(salan) and are shown to be heterogeneous catalysts for asymmetric oxidation of thioethers to sulfoxides.
Porous NiO hollow microspheres have been synthesized via a simple hydrothermal process using L-cysteine as a structure-directing agent followed by calcination. The as-synthesized NiO microspheres are hollow with diameters of 2–3 μm. The shells of the microspheres are built from nanoparticles with diameters of 30–50 nm…