Materials Literature
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Abstract Submicrometer core‐shell polybutadiene‐graft‐polystyrene (PB‐g‐PS) copolymers were synthesized by emulsion grafting polymerization with 1,2‐azobisisobutyronitrile as an initiator. Then, PB‐g‐PS copolymers were blended with high‐impact polystyrene (HIPS) and PS to prepare HIPS/PS/PB‐g‐PS. It is generally accep…
The applications of ferroelectric thin films such as the sensitivity of nonvolatile ferroelectric random access memories are closely linked with large remnant polarization. The high-T(C) (1-x)Bi(Zn(1/2)Zr(1/2))O(3)-xPbTiO(3) (x = 0.7-0.9) thin films with high (100) orientation were fabricated on Pt(111)/Ti/SiO(2)/Si s…
We report a catalytic eight-cobalt-capped α-Keggin polyoxoazocobaltite with a highly symmetric structure completely constructed from the late transition-metal Co(II) as a poly atom, [Co(20)(OH)(24)(MMT)(12)(SO(4))](NO(3))(2)·6H(2)O (1) (MMT: 2-mercapto-5-methyl-1,3,4-thiadiazole). To the best of our knowledge, this is…
Abstract Degradable polyurethane/soybean protein (PU/SP) shape‐memory polymer blends are synthesized using an environmentally‐friendly aqueous dispersion technique. The effects of SP concentration on the blend miscibility, thermal properties, hydrolytic degradation, and shape‐memory behavior are investigated. The shap…
A series of calcium complexes containing oxalamidinate ligands is described. Reactions of oxalamidinate ligand precursors, [PhN=C{NH(CH2)2OMe}-C{NH(CH2)2OMe}=NPh] (1), [PhN=C{NH(CH2)2NMe2}-C{NH(CH2)2NMe2}=NPh] (2), [Ph(TriMe)N=C{NH(CH2)2OMe}-C{NH(CH2)2OMe}=NPh(TriMe)] (3), [Ph(TriMe)N=C{NH(CH2)2SMe}-C{NH(CH2)2SMe}=NPh…
Herein we demonstrate that graphene production could be implemented through the chemical reduction of an exfoliated graphite oxide (GO) suspension using a sodium hypophosphite–hydrochloric acid mixture. The structure and composition of the resultant reduced GO (RGO) were confirmed by XRD, XPS and Raman spectra. The RG…
A new route is described that enables the design of polar materials using racemic basic building units (BBUs). Λ- and Δ-[Cu(H 2 O)(bpy) 2 ] 2+ complexes in noncentrosymmetric [Cu(H 2 O)(bpy) 2 ] 2 [HfF 6 ] 2 ·3H 2 O and centrosymmetric [Cu(H 2 O)(bpy) 2 ][BF 4 ] 2 reveal that racemic BBUs in the solid state can lead d…
While amorphous calcium carbonate (ACC) has been widely exploited as a precursor to crystalline calcium carbonate in solution, the synthetic potential of crystallising ACC in the solid state has received little attention. Building on our recent results which demonstrate that additives occluded within ACC can facilitat…
Irradiation effects in polyethylene and cellulose were examined using molecular dynamics simulations. The governing reactions in both materials were chain scissioning and generation of small hydrocarbon and peroxy radicals. Recombination of chain fragments and cross-linking between polymer chains were found to occur l…
Using scanning tunneling microscopy and density functional theory (DFT), we have analyzed the local electronic properties of (111)-oriented MgO nanoislands on Au(111). Conductance and barrier-height measurements revealed substantial modulations in the electronic structure and electrostatic potential across the islands…
Abstract Transparent cast films of linear low density polyethylene (LLDPE) with nanoclay up to 10 wt % were prepared in one step process using an ultrasonically assisted compounding extruder operating at various ultrasonic amplitudes combined with film casting machine operating at various take up speeds. Thermal, rheo…
The influence of symmetry breaking in a planar metamaterial on transparency effect is numerically investigated. The planar metamaterial's cell is formed by three parallel metal wires. From numerical simulation results, we can see that the transparency effect results from the asymmetric coupling between the cut wires.…
A novel thermotropic liquid-crystalline (LC) biocopolymer, poly{trans-3-methoxyl-4-hydroxycinnamic acid (MHCA: ferulic acid)-co-trans-3,4-dihydroxycinnamic acid (DHCA: caffeic acid)}, was synthesized by a thermal acidolysis-polycondensation of MHCA and DHCA, efficiently catalyzed by Na2HPO4. When the MHCA composition…
Silica nanoparticles (SiNPs) coated with the pH responsive poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) shells have been synthesized in different sizes using surface-initiated atom transfer radical polymerization (ATRP). A mixture of the PDEAEMA functionalized SiNPs (20 and 128 nm) was found to efficiently chang…
From the reaction of CuI with an N,S-donor ligand (L) under different molar ratios, two discrete polynuclear copper(I) iodide complexes, [Cu2I2L2] (1) and [Cu7I7L3] (2) were isolated and characterised. Complex 1 contains a rhomboid-type Cu2I2 cluster, whilst complex 2 is the first example showing a pinwheel-type Cu7I7…
Activated carbon prepared from bottle gourd has been used as adsorbent for removal of leather dye (Direct Black 38) from aqueous solution. The activated carbon obtained showed a mesoporous texture, with surface area of 556.16 m(2) g(-1), and a surface free of organic functional groups. The initial dye concentration, c…
Alloyed Zn(1-x-y)Cd(x)Mn(y)Se nanocrystals exhibiting bright intrinsic dual emission attractive for ratiometric optical nanothermometry are reported. Relative to earlier materials with related dual emission, these alloy nanocrystals require shorter syntheses, contain less Cd(2+), and show dual emission that is less se…
Protein-stabilized gold nanoconstructs are widely studied due to their potential applications in biosensing, drug and gene delivery, and bioimaging. While a number of studies have focused on the novel properties of such materials emanating from the gold, there has been little focus on how the protein shell is affected…
Metastable materials usually possess unique properties. How to acquire these properties is still a great challenge. In this work, we explored the electrical properties of metastable BiPO4 through switchable phase transitions. A metastable monoclinic phase (denoted as HTMP) was synthesized by a heat-treatment over a he…
We investigated the threshold voltage instability induced by gate bias (V(G)) stress in ZnO nanowire (NW) field effect transistors (FETs). By increasing the V(G) sweep ranges and repeatedly measuring the electrical characteristics of the ZnO NW FETs, the V(G) stress was produced in the dielectric layer underneath the…