Materials Literature
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The present study reports the synthesis of spray-coated cross-linked polyelectrolyte multilayer membranes. Membrane cross-linking was performed using alkyne-azide "click" chemistry, where alkyne and azide functional groups were used to modify the poly(acrylic acid) (PAA) and the poly(allylamine) hydrochloride (PAH) po…
As-grown and chemically reduced Rh-doped (1500 p.p.m.) KnbO 3 single crystals grown by the Czochralski method have been characterized. Reduction of the grown crystals at different levels was carried out under a mixture of CO and CO 2 gases as the crystals were grown with excess oxygen. The effect of reduction and poli…
ABSTRACT Although polysulfone (PSU) is a potential thermoplastic engineering plastic with high heat resistance, good dimensional stability and excellent mechanical properties, its poor processability has greatly restricted its application in electrical, aerospace, and medical fields. In this work, polyamide 6 (PA6) an…
Ligand cross-linking is known to improve the colloidal stability of nanoparticles, particularly in aqueous solutions. However, most cross-linking is performed chemically, in which it is difficult to limit interparticle cross-linking, unless performed at low concentrations. Photochemical cross-linking is a promising ap…
© 2014 IOP Publishing Ltd. Defect formation energies of point defects of two pyrochlores Gd2Ti2O7 and Gd2Zr2O7 as a function of crystal size were calculated. Density functional theory with plane-wave basis sets and the projector-augmented wave method were used in the calculations. The results show that the defect form…
Boron nitride (BN) thin film was deposited over Al substrate and used as a heatsink for high-power LED. The rise in junction temperature TJwas evaluated from transient cooling curve and observed as a low value for BN coated substrates rather than for bare and thermal paste (TP) applied substrate measured at 700 mA. To…
ABSTRACT Layered double hydroxides (LDHs), inorganic clay materials with mixed metals present in the structure along with some interlayer cations, have immense potential for use as a filler in rubbers. We report the preparation and properties of a set of novel nanocomposites consisting of a LDH dispersed in carboxylic…
Generalized Bloch wave functions of bulk structures, which are composed of not only propagating waves but also decaying and growing evanescent waves, are known to be essential for defining the open boundary conditions in the calculations of the electronic surface states and scattering wave functions of surface and jun…
The research and development of functional nanostructured carbons (FNCs) or FNC-based catalysts for heterogeneous catalysis is a highly dynamic and important topic in academia and industry because FNCs show integrated advantages: accessible pore system, regular pore structure, controlled bulk composition and surface c…
The hierarchical self-assembly properties of a dimer-forming cyclic peptide that bears a nicotinic acid moiety to form molecular pom-pom-like structures are described. This dimeric assembly self organizes into spherical structures that can encapsulate small organic molecules owing to its porosity and it can also facil…
Inorganic borate host phosphor BaB2O4 doped with varying concentrations of Pb2+ has been prepared by a solution combustion synthesis technique. The synthesis is based on the exothermic reaction between the fuel (urea) and oxidizer (ammonium nitrate). The photoluminescence properties of prepared materials were studied…
Abstract A series of conjugated cationic polymers, differentiated only by their accompanying counter‐anions, was prepared and characterized. The choice of counter‐anion (CA) was found to drastically impact the solubility of the polymers and their optical properties in solution and in the solid state. Fluorescent polym…
Mesoporous solid superbases have high potentials for applications as environmentally friendly catalysts in diverse reactions. However, the generation of strong basicity on mesoporous silica is quite difficult because of the weak guest-host (precursor-silica) interaction and the poor alkali-resistant capacity of host.…
We have investigated the effect of growth temperature on the structure, surface morphology, and magnetic properties of Fe3O4 thin films grown on SrTiO3(001) substrates by a self-template method. To eliminate the intermixing of (001) and (111) orientations that usually occurs in spinel films grown on perovskite substra…
Nano Al-doped ZnO (AZO) particles were added into n-type Bi 2 Te 2.7 Se 0.3 alloys by ball milling and hot pressing method. The power factor was improved by ∼22% with addition of nano-AZO particles, accompanied with a ∼40% decrease of lattice thermal conductivity, leading to peak ZT of ∼0.85 at 323 K for Bi 2 Te 2.7 S…
Two types of crisscross-section polyester (CSP)/antibacterial nylon (AN)/stainless steel, multifunctional metal hybrid yarns were produced using a hollow spindle spinning machine. The core yarns were both stainless steel wires. One type used an AN filament as inner wrapped yarn and CSP as the outer wrapped yarn, and t…
Abstract Supported gold catalysts were prepared on a γ‐Al 2 O 3 support by using the incipient wet impregnation and the deposition–precipitation methods. These catalysts were assessed for the continuous flow, liquid phase hydrogenation of an octanal/octene mixture, and their activity was compared with the activity of…
The effects of ceria and zirconia on the structure-function properties of supported rhodium catalysts (1.6 and 4 wt % Rh/γ-Al2O3) during CO exposure are described. Ceria and zirconia are introduced through two preparation methods: 1) ceria is deposited on γ-Al2O3 from [Ce(acac)3] and rhodium metal is subsequently adde…
Well-defined poly(methacrylate)s with liquid crystal side chains, designated as PPHM, were synthesized by a living anionic polymerization method. Introducing a short-length alkyl chain at the end of the side chain, the solubility of the polymer was improved, resulting in higher molecular weight polymers. While the hig…
ABSTRACT New microbicidal polyamides were prepared by the reaction of 5‐phenyl‐1,3,4,‐oxadiazole‐2‐thiol, 5‐phenyl‐1,3,4‐oxadiazole‐2‐amine, and 5‐(4‐chlorophenyl)−1,3,4‐thiadiazole‐2‐thiol with ethyl chloroformate followed by polycondensation with polyoxypropylenetriamine (Jeffamine T 403 ). The polyamides were modif…