Materials Literature
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Novel liquid crystalline (LC) gold(I) complexes were synthesised and their LC behaviour and photophysical properties were investigated. Simple ligands were utilised in order to prevent steric hindrance and facilitate a strong intermolecular aurophilic interaction, resulting in highly efficient photoluminescence. It wa…
Hierarchical porous spinel nickel cobaltite (NiCo2O4) nanoflakes synthesized through a cost-effective and scalable chemical precipitation method exhibited high specific capacitance (1270 F g−1), excellent rate capability (81% capacity retention at 10 A g−1) and cycling stability (only 4.8% loss after 5000 cycles).
Eleven different Fusarium species were isolated from various infected plant materials and screened to select a potential species for the synthesis of silver nanoparticles. All the isolates were identified on the basis of cultural and microscopic characteristics using Fusarium identification keys. For the confirmation…
Polycrystalline zinc oxide (ZnO) thin films have been deposited at 450°C onto glass and silicon substrates by pulsed laser deposition technique (PLD). The used source was a KrF excimer laser (248 nm, 25 ns, 5 Hz, 2 J/cm2). The effects of glass and silicon substrates on structural and optical properties of ZnO films ha…
Supercritical CO2 (SCCO2) is used to synthesize MnO2. This process is found to be promising for producing oxide nanorods (∼5 nm in diameter) with little agglomeration. With suitable SCCO2 pressure and temperature, nanocrystalline α-MnO2 with an extremely high surface area of 245 m2 g−1 (versus 80 m2 g−1 for the oxide…
Doping with nitrogen in controllable configurations is very valuable to tailor the properties of graphene. Here we report density-functional theory calculations of chemical reactions of ammonia, a widely used nitrogen source, at vacancies and edges of graphene, through which we explore strategies to achieve N-doped gr…
Graphene-MnO2 composites are reduced from GO-MnO2 using various concentrations of hydrazine hydrate with a fixed reduction time to optimize the hydrazine concentration to obtain excellent electrochemical performance. Changes in the oxygen-containing functional groups are observed as the concentration of hydrazine is v…
Analytical expressions for the local densities of states of epitaxial graphene formed on metal and semiconductor substrates are derived on unified grounds. The conditions of strong and weak graphene-substrate coupling are considered. It is shown that, in the case of strong coupling (the interaction of carbon atoms of…
Various polymers such as nylon, polypropylene, polystyrene, ethylene vinyl acetate, epoxy resins, polyurethanes, polyimides, and polyethylene terephthalate can be reinforced by adding nanofillers with dimensions <100 nm. Fillers can be in the form of particles (minerals), sheets (exfoliated clay stacks), or fibers…
One-dimensional porous metallic nanomaterials have attracted much attention due to their unique shape and hollow structure. Herein, the gold nanorods in a porous shell of an AuAg alloy are synthesized via a dealloying process of the core-shell Au@AuAg nanorods at room temperature. The formation of tiny pores in the sh…
The valence band offsets (ΔEV) of Zn(1-x)Mg(x)O/ZnO heterojunctions grown by plasma-assisted molecular beam epitaxy were measured by photoelectron spectroscopy. From the directly obtained ΔEV values, the related conduction band offsets (ΔEC) were deduced. All the Zn(1-x)Mg(x)O/ZnO heterojunctions exhibit a type-I band…
Synthesis and photophysical characterisation of [Ln(hfac)3DPEPO] complexes (with Ln = Eu, Tb, Yb, Nd, Gd) has been carried out to investigate the factors responsible for the variation in total photoluminescence quantum yield within this family of emissive lanthanide complexes. Electronic absorption and emission spectr…
Flexible field emission (FE) arrays have a wide range of applications in next generation low-cost, lightweight and wearable electronics, roll-up displays, and large-area circuits on curved objects, yet the growth of tapered, high-quality single-crystalline nanostructure-based emitters on flexible substrates with super…
Electrospinning has become a mainstream technology for production of nanofibers. Despite its popularity, production of aligned nanofibrous constructs in a tubular form by electrospinning remains a challenge. Here, we present a simple electrospinning approach that can produce nanofibrous tubes with either randomly orie…
The control of cancer cell adhesion behavior on certain surfaces has been widely studied in recent years to enhance cell adhesion, which is required for bio-sensing, implant biomaterials, or to prevent infections from bacteria or germs. In addition, it helps to preserve the original functions of medical devices such a…
In this paper, amidoxime functionalized cellulose (AOFC) derivatives have been synthesized by a two step approach and characterized. Firstly, cyanoethyl cellulose (CEC) was synthesized by using Michael addition between acrylonitrile and hydroxyl groups of cellulose in the homogeneous cellulose/NaOH/urea solution. The…
An unprecedented guest-host redox strategy is developed to generate strong basicity on mesoporous silica, which breaks the tradition of thermally induced decomposition of precursors. New materials possessing ordered mesostructure, strong basicity, and excellent catalytic activity are thus successfully fabricated at a…
In this study, two types of functionalized multi-walled carbon nanotubes were dispersed in an epoxy resin system (SC-15) at room and elevated temperatures using a combination of sonication and high shear mixing methods to determine optimal mechanical and thermal properties. At first, 0.1 wt% - 0.3 wt% of amino-functio…
We correlate the localization of silver nanoparticles inside cells with respect to the cellular architecture with the molecular information in the vicinity of the particle surface by combining nanoscale 3D cryo-soft X-ray tomography (cryo-SXT) with surface-enhanced Raman scattering (SERS). The interaction of the silve…
Nitrogen-doped graphene with up to 22.1% N/C atom and 7.15 × 104 Sm−1 electrical conductivity was synthesized by ionic-liquid-assisted electrolysis with subsequent thermal annealing of the resultant ionic-liquid-functionalized graphene sheet.