Materials Literature
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Owing to their unique photo-physical properties, rare-earth ions-doped upconversion nanoparticles (UCNPs) have attracted extensive attention in recent years. UCNPs have many special merits, such as a long luminescence lifetime, narrow emission band widths, high quantum yields and low toxicity, which allows their poten…
A simple reaction process is developed to synthesize blue, green, yellow and red colour graphene nanoparticles (GNPs) from carbon fibers. Here, we have focused on synthesis of near infra-red GNPs and their biological application for optical imaging of deep tissues and organs.
Polymer-based anti-reflective coatings (ARCs) on glass pose major challenges for outdoor photovoltaic applications due to their incompatible mechanical and thermal properties. Here we demonstrate durable, chemically and thermally stable polyhedral oligomeric silsesquioxane-based (POSS) anti-reflective moth's eye nanos…
An efficient red phosphor based on the substitution of Mn4+ for Ti4+ in the lattice of Mg2TiO4 was prepared through a sol–gel route. The phosphor was characterized by X-ray diffraction (XRD), electron paramagnetic resonance (EPR) and UV-vis spectroscopy and the luminescent properties of the samples with varying Mn4+ c…
Different amine functionalized K10 montmorillonites were hydrothermally fabricated by a simple method of treatment of the neat clay with different amine solutions and used as heterogeneous catalysts towards the Knoevenagel condensation reaction. Catalytic results show that the di-amine functionalized K10 montmorilloni…
In this study, primary and tertiary amine bifunctional graphene oxide (GO-NH2-NEt2) was prepared by silylanization of graphene oxide (GO) with amine-terminal silanes. The obtained GO-NH2-NEt2 was characterized by infrared spectrum (FTIR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), high-r…
A new gold complex that shows the AIE effect as well as the thermochromic fluorescence switch is reported. This interesting phenomenon is attributed to changes in the intermolecular Au∙∙∙Au interactions and the formation of nano-aggregates.
It is currently a challenge for space tribology to develop a long lifetime and high bearing capacity lubricant meeting the requirements of space applications. Herein, we dispersed graphene into ionic liquid, prepared novel composite coatings of diamond-like carbon (DLC)/ionic liquid (IL)/graphene with different graphe…
Notable progress has been made on the synthesis, properties and uses of carbon nanotubes (CNTs) in the past two decades. However, the controlled growth of single-wall CNTs (SWCNTs) with predefined and uniform structures remains a big challenge, and making full use of CNTs in applications still requires great effort. I…
BACKGROUND: Cobalt oxide nanoparticles (Co(3)O(4)NPs) are increasingly recognized for their utility in biological applications, magnetic resonance imaging, and drug delivery. However, little is known about the toxicity of Co(3)O(4)NPs in human cells. METHODS: We investigated the possible mechanisms of genotoxicity ind…
Organic hydrogen carriers show a great potential as future energy storage systems. Limitations of the dehydrogenation step due to thermodynamic limitations are one of the major challenges. Based on the reaction equilibria for some example compounds the feasibility of certain substance classes is discussed.
Purely inorganic porous frameworks using catalytically active [MnV13O38](7-) clusters as nodes and rare earth ions as linkers have been successfully prepared. The POM-based porous framework is a kind of multifunctional material, which exhibits selective adsorption behavior and remarkable catalytic activity for the het…
The design of molecule-based systems displaying tuneable optical and/or magnetic properties under external stimuli has received a great deal of attention in the past few years. This interest is driven by the potential applications in high-performance molecule-based electronics in the areas of recording media, switches…
New 1D lanthanide-organic frameworks, [Ln(dpdc)1.5(IP)(H2O)]n (Ln = Sm 1, Eu 2, Gd 3; dpdc = 2,2'-diphenyldicarboxylate and IP = 1H-imidazo[4,5-f][1,10]-phenanthroline), were synthesized. White light emission was realized by two approaches: a single component Sm(iii) framework and a two-component Eu(iii)-doped Gd(iii)…
First-principles calculations are performed to investigate the dissolving, trapping and detrapping of H in six bcc (V, Nb, Ta, Cr, Mo, W) and six fcc (Ni, Pd, Pt, Cu, Ag, Au) metals. We find that the zero-point vibrations do not change the site-preference order of H at interstitial sites in these metals except Pt. One…
Superhydrophobic hydroxide zinc carbonate (HZC) films were fabricated on aluminum substrate through a convenient in situ deposition process. Firstly, HZC films with different morphologies were deposited on aluminum substrates through immersing the aluminum substrates perpendicularly into aqueous solution containing zi…
We have demonstrated that thin films of hierarchical NiO microflakes assembled from nanoleaves can be grown directly on FTO-coated glass substrates using a facile and template-free hydrothermal technique. This hierarchical structure holds the advantages of both nanometre-sized building blocks and microsized assemblies…
An energy storage device--a coaxial single fibre supercapacitor--was developed using a dip coating method and characterised using electrochemical methods. The specific capacitance per unit area and length were calculated to be 3.18 mF cm(-2) and 0.1 mF cm(-1), respectively, for a 2.6 cm supercapacitor. A 70 cm long fi…
Structural manipulation of the two dimensional graphene surface has been of significant interest as a means of tuning the properties of the nanosheets for enhanced performance in various applications. In this report, a straightforward and highly scalable method is presented to prepare bulk quantities of "holey graphen…
MnO2/carbon composites with ultrathin MnO2 nanofibers (diameter of 5-10 nm) uniformly deposited on three dimensional ordered macroporous (3DOM) carbon frameworks were fabricated via a self-limiting redox process. The MnO2 nanofibers provide a large surface area for charge storage, whereas the 3DOM carbon serves as a d…