Materials Literature
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Uniform diameter, horizontally aligned single-walled carbon nanotubes (SWNTs) are grown on sapphire substrate through the control of Fe nanoparticle size by annealing in ultrahigh vacuum (UHV). We find that thermal annealing in UHV reduces the Fe nanoparticle size and significantly narrows their size distribution. The…
Strategies that allow access to side-chain functional polyesters are valuable as they would enable to engineer the properties of these hydrolytically degradable materials. This contribution explores the feasibility of a novel approach toward side-chain functional polyesters that is based on the Baylis–Hillman reaction…
In view of the significant cold-start hydrocarbon emission reduction potential of the electrically heated converter (EHC) technology for conventional stoichiometric gasoline engines, there is considerable interest in better understanding of the thermal and emission performance characteristics and optimizing the design…
The Fourier modal method (FMM) is a method for efficiently solving Maxwell’s equations with periodic boundary conditions. In order to apply the FMM to nonperiodic structures, perfectly matched layers need to be placed at the periodic boundaries, and the Maxwell equations have to be formulated in terms of a contrast (s…
This paper presents a facile hydrothermal route to synthesize monodispersive and single-crystalline BaHfO(3) hollow micro- and nanospheres in a concentrated basic environment. The hollow spheres were size tunable from submicrometer to nanoscale by simply adjusting the base concentration at a suitable temperature. The…
Abstract A series of novel aromatic polyamides with pyrenylamine in the backbone were prepared from a newly synthesized dicarboxylic acid monomer, N , N ‐di(4‐carboxyphenyl)‐1‐aminopyrene, and various aromatic diamines via the phosphorylation polyamidation technique. These polyamides were readily soluble in many organ…
Abstract The chloroform‐soluble products of aniline or ( 15 N)aniline oxidation in alkaline medium were analysed using one‐ and two‐dimensional 1 H NMR, 13 C NMR and 15 N NMR spectroscopy. Among the products, two were found to be prominent, namely a carbonyl‐containing semiquinonoid and a phenazine‐like structure. The…
Understanding and controlling aggregation structures of conjugated polymers (CPs) in aqueous solutions is critical to improving the physical and photophysical properties of CPs for biological applications. Here, we present spectroscopic evidence, including nuclear magnetic resonance (NMR) spectroscopic results, that d…
A linker-free reduced graphene oxide (R-GO)-CdSe nanoparticle (CdSe NP) hybrid nanostructure was synthesized using a chemical vapor deposition method. CdSe NPs were selectively deposited on the surface of R-GO with controlled NP size and coverage. The distribution and morphology of CdSe NPs on R-GO were characterized…
We fabricated Mn2+-activated nanocrystallized glasses (NCG) with willemite-type Zn2GeO4 from a zincogermanate system glass added by various MnO-concentrations, and examined their photoluminescence (PL) properties. The Mn2+-activated NCGs indicated bright green-emission based on the 4T1→6A1 transition of the Mn2+, indi…
${\mathrm{LaCo}}_{2}{\mathrm{B}}_{2}$ with a ${\mathrm{ThCr}}_{2}{\mathrm{Si}}_{2}$-type (so-called ``122'') structure composed of alternately stacked La and CoB layers exhibits metallic electrical conductivity and Pauli paramagnetic behavior down to 2 K. Bulk superconductivity with a ${T}_{c}$ of $\ensuremath{\sim}4\…
Abstract The oxidative polymerization of p ‐phenylenediamine with silver nitrate by using various oxidant/monomer mole ratios in aqueous solutions of both acetic and nitric acid was studied experimentally and computationally. The produced micro/nanostructured conducting poly( p ‐phenylenediamine)–silver composites, re…
Abstract Two intumescent flame‐retardant (IFR) additives, IFR‐I and IFR‐II, were synthesized and their structure was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance. Polylactide (PLA) was modified by the two IFRs to obtain flame‐retardant composites. The flammability of the PLA/IFR…
A well-defined series of nine poly( l -lactide)- b -(2-dimethylaminoethyl methacrylate) (PLLA- b -PDMAEMA) linear diblock copolymers with low polydispersity were prepared by ring-opening polymerization of LLA using 4-isopropylbenzyl alcohol and tin octoate as the initiating system, conversion of the OH-terminated PLLA…
1-Ethyl-3-(3-dimethylaminopropyl) carbondiimide hydrochloride (EDC) is commonly used as a crosslinker to help bind biomolecules, such as DNA plasmids, with nanostructures. However, EDC often remains, after a crosslink reaction, in the micro-aperture of the nanostructure, e.g., carbon nanotube. The remaining EDC shows…
Can't keep me down: Silver nanoclusters (NCs), formed by spontaneous atomic-level dispersion of non-nano silver onto Al2O3 surface, show self- regenerative properties during redox aging above 900 °C and, consequently, higher activity than state-of-the-art CO oxidation catalysts after the aging. Size-dependence of the…
The diffusion coefficient is a fundamental parameter for devices exploiting the ion transport properties of polyelectrolyte multilayers (PEMUs) and complexes. Here, the transport of ferricyanide through a multilayer made from poly(diallyldimethylammonium chloride) (PDADMA) and polystyrene sulfonate (PSS) was studied a…
Atom-thick materials such as single-wall carbon nanotubes (SWNTs) and graphene are prone to chemical attacks because all constituent atoms are exposed. Here we report the retention of optical and electrical properties of inner tubes in heavily functionalized double-wall carbon nanotubes (DWNTs). Correlated optical abs…
Protein stabilized gold nanoclusters (Au-NCs) are biocompatible, near-infrared (NIR) emitting nanosystems having a wide range of biomedical applications. Here, we report the development of a Au-NC based targeted fluorescent nano-bioprobe for the flow-cytometric detection of acute myeloid leukaemia (AML) cells. Au-NCs…
The facile preparation of poly (N-vinyl carbazole) (PVK) and multiwalled carbon nanotubes (MWNTs) solution and conjugated polymer network (CPN) nanocomposite film is described. The stable solutions of PVK/MWNT were prepared in mixed solvents by simple sonication method, which enabled successful deaggregation of the MW…