Materials Literature
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This report presents the first simultaneous, metal-free synthesis of block copolymers through combination of enzymatic ring-opening polymerisation of epsilon-caprolactone with RAFT-mediated controlled radical polymerisation of styrene.
The segmental bidentate-tridentate-bidentate ligand L2 reacts with M(II) (M = Cr, Zn) and Ln(III) (Ln = La, Eu, Gd, Tb, Lu) to give the heterotrimetallic triple-stranded helicates [MLnM(L2)3]7+. For M = Zn(II), the isolated complexes [ZnLnZn(L2)3](CF3SO3)7 (Ln = Eu, Tb) display only lanthanide-centred luminescence ari…
A series of carbon black filled polyHIPEs was synthesised following a new preparation protocol. 1 wt% carbon black was dispersed in the monomer mixture. In order to enhance the stability of the suspension, polymer grafting of carbon black was performed by initiating the polymerisation prior to emulsifying the formulat…
A new biaxial tensile strength test (ball on three balls test, B3B-test) for brittle materials has been proposed by some of the authors several years ago. A disc-shaped plate is symmetrically supported by three balls at one plane and loaded by a fourth ball in the centre of the opposite plane. This new test has severa…
Polyhydroxyalkanoates (PHAs) have received considerable interest as renewable-resource-based, biodegradable, and biocompatible plastics with a wide range of potential applications. We have engineered the synthesis of PHA polymers composed of monomers ranging from 4 to 14 carbon atoms in either the cytosol or the perox…
Magnetic poly(ethyl-2-cyanoacrylate) (PECA) nanoparticles containing anti-cancer drugs (Cisplatin and Gemcitabine) were prepared by inter-facial polymerization. The spherical nanoparticles (d = 250 +/- 15 nm) with smooth surfaces and moderately uniform size distributions were obtained. The amount of magnetite encapsul…
The early stages of the formation of persistent slip markings in fatigue are analysed using three-dimensional discrete dislocation dynamics modelling. Surface displacements due to slip are computed using a specific post-processing method. Fatigue simulations under various strain ranges and grain sizes have been perfor…
To improve the La 1-x Sr x MnO 3-␦ -yttria-stabilized zirconia ͑LSM-YSZ͒ cathode performance of intermediate temperature solid oxide fuel cells ͑SOFCs͒, Sm 0.6 Sr 0.4 CoO 3-␦ ͑SSC͒ perovskite nanoparticles are incorporated into the cathodes by a reactioninfiltration process.The SSC particles are ϳ20 to 80 nm in diamet…
This report demonstrates a novel electrochemical method for fast and sensitive detection of ultra-trace 2,4,6-trinitrotoluene (TNT) based on modified electrodes by functionalized MWCNTs. To fabricate new kind of functionalized MWCNTs material sensitive to TNT, our work first theoretically investigated the interaction…
Porous anodic alumina (PAA) films, formed by anodic oxidation in acidic solutions, contain hexagonal arrays of parallel cylindrical pores, with pore diameter and spacing between ten and several hundred nanometers. Simulations were developed for the electrical potential distribution in the film during steady-state PAA…
Highly efficient and facile routes are still needed to meet the increasing demand on nitrides in a variety of applications although so far some preparative routes already exist. We have extended the solid-state metathesis (SSM) method by choosing an organic compound, melamine, and oxides as precursors, which allows us…
In this work, the synthesis, characterization, and applications of branched oligothiophene dendrons that act as electroactive surfactants for the capping of Au metal nanoparticles and CdSe quantum dots are described. Two distinct methods have been employed for synthesis: a ligand exchange process and a direct-capping…
New self-assembled grids and clusters are reported, with square [2 × 2] M4 (M = Mn(II)4, Cu(II)4), trigonal-bipyramidal Mn(II)5, and square [3 × 3] M9 (M = Mn(II), Cu(II)) examples. These are based on a series of ditopic and tritopic hydrazone ligands involving pyridine, pyrimidine and imidazole end groups. In all cas…
Lanthanum orthophosphate nanorods with typical dimensions of 8 nm in diameter and 80 nm in length were prepared simply by mixing NaH2PO4 and LaCl3 aqueous solutions in an oil bath of 100 °C. Eu3+- and Ce3+-doped nanorods were also be prepared in a similar way by introducing Eu3+ and Ce3+ ions, respectively, into the r…
A series of ternary nitride solid solutions with a general formula of (2 atom %) were synthesized by the carbothermal reduction and nitridation (CRN) method. The structure and luminescence properties were characterized for practical applications as a potential red phosphor for the phosphor-converted white light-emitti…
Gadolinium-based carbon nanostructures are poised to make a significant impact as advanced contrast agents (CAs) for magnetic resonance imaging (MRI) in medicine. This paper reviews and forecasts gadonanotubes as synthons for the design of high-performance MRI CA probes with efficacies up to 100 times greater than cur…
In the last two years we have witnessed the exciting experimental discovery of soft matter with nontrivial quasiperiodic long-range order – a new form of matter termed a soft quasicrystal. Two groups have independently discovered such order in soft matter: Zeng et al. in a system of dendrimer liquid crystals; and Taka…
We propose a new approach to fabricating carbon nanotube (CNT) vias, which uses preformed catalyst nanoparticles to grow CNTs. A newly-designed impactor provided size-classified catalyst particles, and a new deposition system injected them into via holes down to 40 nm in diameter. The resultant CNT-via resistance was…
The HAD superfamily is a large superfamily of proteins which share a conserved core domain that provides those active site residues responsible for the chemistry common to all family members. The superfamily is further divided into the four subfamilies I, IIA, IIB, and III, based on the topology and insertion site of…
A planar pi-conjugated heteroaromatic molecule 1 has been synthesized and fully characterized; it combines two characteristics, a charge-transfer transition originating from its inherent donor-acceptor nature in its neutral state and an intervalence charge-transfer transition in its 1(2+) mixed-valence state.