Materials Literature
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The physical properties of the nematic phases formed by four bent-core oxadiazole based materials are reported. In particular, the splay (K11), twist (K22) and bend (K33) elastic constants, the birefringence and the dielectric anisotropy of the materials are described and the effect of chain length and the presence of…
A synthetically facile and earth abundant Cu(I) metal-to-ligand charge transfer sensitizer was successfully incorporated into two distinct photochemical upconversion schemes, affording red-to-green and orange-to-blue wavelength conversions.
A fast, low-temperature hydrothermal method was introduced to prepare a VxW1−xO2(B) ultrathin nanostructure which can be easily transformed into VxW1−xO2(M) via a fast annealing process in an inert atmosphere. Thermochromic foils coated with ultrathin V0.98W0.02O2(M) nanopowders exhibited unsatisfactory optical proper…
This paper presents a facile method for encapsulation of a SiO2 layer on the surfaces of ZnO quantum dots (ZnO QDs) to fabricate ZnO QD@SiO2 nanoparticles. Coating of a SiO2 layer can effectively improve the dispersion of ZnO QDs in an aqueous phase, insulate the photocatalytic activity of ZnO QDs and increase the pho…
For the first time, the role of isovalent Zr substitution in cerium oxide on the non-stoichiometry induced dilation (chemical expansion) was investigated. Chemical expansion was derived experimentally using HTXRD, dilatometry, and TGA measurements on Pr0.1Zr0.4Ce0.5O1.95−δ and computationally with DFT calculations on…
Bisphenol A diglycidylether (DGEBA) based low viscosity, liquid epoxy resins are widely used as basis for advanced polymers and nanocomposites, adhesives, protective coatings and encapsulation. We present “green” synthesis of nano-SiO2/epoxy polymer hybrids by a two-step chronological polymerization of inorganic and o…
A novel chiral ionic polymer exhibits high fluorescence enantioselectivity towards α-amino acid anions, and its solution appears bright green upon addition of (L)-α-amino acid anions, which can be clearly observed by the naked eye for direct visual enantioselective recognition.
Polypyrrole (PPy)–zinc oxide (ZnO) nanocomposites (PZ1, PZ2 and PZ3) are prepared by polymerizing pyrrole (1.3 × 10−6 mol) in the presence of various amounts of ZnO nanoparticles (NPs) (25, 100, 250 mg) in a lauric acid (LA)–cetyl trimethyl ammonium bromide (CTAB) coacervate gel template. PPy formed in the gel templat…
Silver polygonal nanostructures are prepared via constant potential electrodeposition on Indium Tin Oxide electrodes without employing any templates or surfactants. The Scanning Electron Microscopy (SEM) and Tunneling Electron Microscopy (TEM) images reveal the presence of polygons of various distinct shapes which are…
α- and β-MnO2 with different phase structures were prepared by hydrothermal method and investigated for low temperature SCR. The α-MnO2 catalyst showed higher activity than the β-MnO2 catalyst at low temperature region. Characterization results revealed that the activity predominately depended on the tunnel (or layer)…
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In this work we address the challenge of furthering our understanding of the driving forces responsible for the metal-metal interactions in industrially relevant bimetallic nanocatalysts, by taking a comparative approach to the atomic scale characterization of two core-shell nanorod systems (AuPd and AuRh). Using aber…
The organic-inorganic hybrid sol-gel films, the structure of which comprises interconnected inorganic and organic networks have been reported as an environmentally friendly anti-corrosion pre-treatment for several metals, including aluminium alloys. In this paper, an epoxy-silica-zirconia hybrid sol-gel coating was sy…
We develop a digital direct writing method for ZnO NW micro-patterned growth on a large scale by selective laser decomposition of zinc acetate. For ZnO NW growth, by replacing the bulk heating with the scanning focused laser as a fully digital local heat source, zinc acetate crystallites can be selectively activated a…
To handle serious underwater oil spills, we have designed a functionally integrated device which can continuously clean up spilled oil underwater or on the water's surface in a directional manner, guided by a magnetic field, collecting the oil into the interior of the device and recycling it. The collecting efficiency…
Research interest in dynamic assemblies of coordination polymers (CPs) has been rising in recent years for the similarity with life systems in their self-adaptable morphologies and properties. However, monitoring of the assembly process and elucidating the nature for the morphological transformation are very challengi…
Effects of intermetallic phases on the creep behavior of AZ91 magnesium alloy have been studied. Thermally stable intermetallic phases such as Mg2Si and Mg3Sb2 are introduced deliberately in AZ91 alloy by the adding Si and Sb (0.5% Si, 0.5% Sb and 0.5% Si+0.2% Sb, all are in wt %). Creep tests were carried out at 150…
A simple and scalable method was proposed to fabricate graphene papers, and the graphene sheets were prepared using conventional chemical vapor deposition (CVD) method. The CVD graphene papers possess much higher electrical conductivity of 1097 S cm−1, compared with other reported carbon-related papers (graphene, carb…
Metal borohydrides offer high theoretical storage capacity for solid state hydrogen storage. This work is aimed at the mechanochemical synthesis of Yb(BH4)3 from LiBH4 and YbCl3. Different synthesis routes resulted in three new compounds, LiYb(BH4)4−xClx, α-Yb(BH4)3 and β-Yb(BH4)3. Their crystal structures have been d…
Ultrathin BN nanosheets (BNNSs) were prepared at 300 °C by a new variable-pressure one-step chemical synthesis route. It was found that the thickness of BNNSs decreased from 8 nm to 3 nm with the pressure increasing from 10 MPa to 90 MPa, and all the BNNSs are triangular in shape with a zigzag edge. These BNNSs have h…