Materials Literature
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The effect of the compounding method on the morphology and on the properties of poly(lactic acid) (PLA)–hydrotalcite (HT) composites was studied. Moreover, the influence of two different kinds of HT—organically modified (OM‐HT) and unmodified (U‐HT)—and their concentration was evaluated. The composites were prepared u…
We herein report a facile method to prepare raspberry-like poly(styrene-glycidyl methacrylate) [P(S-GMA)] particles with controllable structure via a one-step soap-free emulsion polymerization process accompanied by phase separation. In this method, corona particles with a size of 10-20 nm were produced in situ in the…
ABSTRACT This article explores the effect of halloysite nanotubes (HNTs) and modified HNTs (M‐HNTs) on the properties of immiscible blend system based on polar polyoxymethylene (POM) and nonpolar polypropylene (PP) polymers. HNTs have been modified by N ‐(β‐aminoethyl)‐γ‐aminopropyltrimethoxysilane (APTMS). Modificati…
Chemical exchange saturation transfer (CEST) is a magnetic resonance imaging (MRI) contrast mechanism that can detect dilute CEST agents and microenvironmental properties, with a host of promising applications. Experimental measurement of the CEST effect is complex, and depends on not only CEST agent concentration and…
A family of linear asymmetrical D-π-A and symmetrical D-π-D types of thiazole-based aromatic heterocyclic fluorescent compounds bearing various electron-donating and electron-withdrawing tails (bromo, triphenylamino, pyridyl, thienyl and benzoic acid) have been designed and prepared successfully. Synthetic, structural…
Nanoprobes based on quantum clusters (QC) with near-infrared fluorescence, magnetic-resonance-imaging contrast, and singlet-oxygen-sensitized intracellular fluorescence are studied. The generation of singlet oxygen and singlet-oxygen-sensitized fluorescence uncaging by magnetic and NIR-emitting nanoparticles are explo…
Graphite nanoplatelets (GNPs) with different sizes were compounded with polyetherimide (PEId) by melt‐blending and precoating in order to investigate their effect on the electrical and thermal conductivity of the composites. Precoating compounding successfully created a percolated GNP network with an electrical percol…
Metric length supramolecular nanotube yarns are fabricated though a spinning process from the diluted aqueous solution of self-assembled nanotubes, with bolaamphiphiles working as molecular building blocks. These non-covalent bonding based nanotube yarns show outstanding mechanical strength compared with some conventi…
We present a novel class of light-responsive particles for fluorescence modulation at low switching doses. The particles also exhibit phase-changing and shape-shifting behavior. The monodisperse conjugated polymer particles with incorporated light-switchable azobenzene moieties are prepared in a Suzuki-Miyaura dispers…
Abstract Sintering is one of the major routes for the deactivation of surface‐supported catalytic particles in heterogeneous catalysis. The two mechanisms that are responsible for such coarsening phenomena are Ostwald ripening, in which larger clusters tend to grow at the expense of smaller ones, and Smoluchowski ripe…
We theoretically investigate electron energy loss spectroscopy (EELS) of metallic nanoparticles in the optical frequency domain. Using a quasistatic approximation scheme together with a plasmon eigenmode expansion, we show that EELS can be rephrased in terms of a tomography problem. For selected single and coupled nan…
Gold nanoparticles (AuNPs) coated with a series of poly(ethylene glycol) (PEG) ligands appended with four different sulfur-based terminal anchoring groups (monothiol, flexible dithiol, constrained dithiol, disulfide) were prepared to explore how the structures of the sulfur-based anchoring groups affect the colloidal…
Gold nanoisland arrays with well controlled growth were achieved by repeated sputtering deposition and post-deposition annealing processes. When each deposition was set at 5 nm (nominal thickness based on gold mass), the single deposition and annealing process (single process) yielded gold nanoisland arrays with an av…
In the present study, waste jute fibers generated in textile industries, were wet pulverized to the scale of nanofibers of 50 nm diameter using high energy planetary ball milling for 3 h. The presence of water during wet pulverization found to reduce the rising temperature of mill, which prevented sticking of nanofibe…
The primary nucleation induction time of butyl paraben in pure solvents: acetone, ethyl acetate, methanol, ethanol, and propanol and in 70% and 90% ethanol aqueous mixtures has been determined. At each condition, about 100 experiments have been performed in 5 mL scale to capture the statistics of the nucleation proces…
A carbon nanotube (CNT)/cerium oxide composite was prepared by a one-pot hydrothermal reaction in the presence of KOH and capping agent polyvinylpyrrolidone. The nanocomposite displayed pronounced capacitive behaviour with very small diffusion resistance. The electrochemical performance of the composite electrode in a…
The catalytic effect of two nanoscale transition metal oxides, Fe 2 O 3 and Co 2 O 3, as additives on the dehydrogenation properties of LiAlH 4 after milling are investigated. The onset dehydrogenation temperature for the 5 mol % Fe 2 O 3 -doped and 5 mol % Co 2 O 3 -doped samples are 85 and 79 °C lower for the first-…
Zinc phosphide (Zn3P2) is a promising earth-abundant material for thin film photovoltaic applications, due to strong optical absorption and near ideal band gap. In this work, crystalline zinc phosphide nanoparticles are synthesized using dimethylzinc and tri-n-octylphosphine as precursors. Transmission electron micros…
Flame-melting rapid-cooling reactions were used to synthesize a number of pure phases of the Cs 2 M II M IV 3 Q 8 family (M II = Mg, Zn, Cd, Hg; M IV = Ge, Sn; Q = S, Se, Te) whereas the more toxic members were synthesized using a traditional tube furnace synthesis. All Cs 2 M II M IV 3 Q 8 compounds presented here cr…
Templated pores: A resol-assisted solvent-evaporation-induced self-assembly (RA-EISA) gives unique ordered mesoporous niobia spheres by using the amphiphilic diblock copolymer PEO-b-PS as a template. The mesoporous Nb2O5 spheres have ordered hexagonal structures, large pore size and high surface area, and a nanocrysta…