Materials Literature
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On the basis of the topologically distinct oxygen nets of crystalline ice phases, a series of carbon structures with sp 3 bonding are constructed. Five new low-energy polymorphous phases of carbon, named “ice carbons”, are predicted by using the first-principles calculations. Their hardnesses are about 88.5–98.5% that…
Multiwall carbon nanotubes (MWCNT) were synthesized by the floating catalyst chemical vapor deposition (FCCVD) method. As a result, nanotubes containing metallic iron (α-Fe) were obtained and characterized. The impact of surface modification, on MWCNTs stability in water, was thoroughly studied applying three oxidativ…
Electromechanically active polymers (EAP) behave as actuators, i.e., temporarily change their shape when subjected to electric stimulus. However, in applications where a steady state of an actuator is required for an extended period of time (e.g., displaying characters of Braille text), EAPs need an active driving sig…
Ag–Au nanoparticles grafted on Ge wafer were fabricated as SERS substrates to detect 200 random spots and the lowest relative standard deviation of less than 7% was obtained.
Cell-sized polyelectrolyte capsules functionalized with a redox-driven proton pump protein were assembled for the first time. The interaction of polyelectrolyte microcapsules, fabricated by electrostatic layer-by-layer assembly, with cytochrome c oxidase molecules was investigated. We found that the cytochrome c oxida…
Background and aims – The diatom flora from West African rivers remains virtually unknown. In this context, and given the restricted literature for the region, we explored the diatom communities from the Agnéby and Mé river watersheds, Ivory Coast. Methods – Diatoms were sampled on glass slides previously immersed dur…
Porous thin‐sheet cobalt–copper–manganese mixed oxides modified microfibrous‐structured ZSM‐5 coating/PSSF catalysts were developed by the papermaking/sintering process, secondary growth process, and incipient wetness impregnating method. Paper‐like sintered stainless steel fibers (PSSF) support with sinter‐locked thr…
Abstract Ag44(p‐MBA)304− (p‐MBA=para‐mercaptobenzoic acid) nanocluster (NC) supracrystals (SCs) with customizable shapes can be obtained by simply altering the type and concentration of the counterions of the p‐MBA ligands in the dimethylsulfoxide (DMSO)/water crystallization system. Changing the counterion of the p‐M…
By means of first-principles computations, we first propose a simple and effective strategy through the molecular charge transfer via noncovalent π-π interaction to modulate the electronic and magnetic properties of zigzag SiC nanoribbons (zSiCNRs). This charge transfer is induced by adsorbing the electron-withdrawing…
Room temperature synthesis of micelle-protected highly fluorescent carbon nanodots (CNDs) and fabrication of scratch-resistant CND–ORMOSIL films and paint.
The objective of this study was to evaluate the use of organically-modified clay nanoparticles in poly(-caprolactone) (PCL) for developing biodegradable composites. PCL nanocomposites reinforced with two different types of organically-modified clay (Cloisite 30B, C30B and Cloisite 93A, C93A) were prepared by melt-mixi…
Background and aims – Planothidium haynaldii (Schaarschm.) Lange-Bert. (≡ Achnanthes haynaldii Schaarschm.) is a widely reported species from temperate and cold zones of southern and northern hemispheres despite being originally described from a high altitude stratovolcano (Antisana, 4100 m a.s.l.) in Ecuador (tropica…
OBJECTIVE: The aim of this study was to prepare aclacinomycin A (ACM)-loaded solid lipid nanoparticles (SLNs) and to evaluate their in vitro and in vivo characteristics. METHODS: SLNs were prepared using an emulsion evaporation-solidification method, and characterized in accordance with the morphological examination,…
Background and aims – The limnoterrestrial and aquatic diatom flora of the entire Antarctic Region (sub-Antarctic islands, Maritime Antarctic Region, Antarctic Continent) is currently under revision. One of the genera that still needed a thorough analysis is the genus Halamphora, recently split off from Amphora . Hala…
We report here a reliable and reproducible single-step (without post-annealing) fabrication of phase-pure p-type rhombohedral CuAlO2 (r-CuAlO2) thin films by reactive magnetron sputtering. The dependence of crystallinity and phase compositions of the films on the growth temperature was investigated, revealing that hig…
Organic semiconductors are key building blocks for future electronic devices that require unprecedented properties of low-weight, flexibility, and portability. However, the low charge-carrier mobility and undesirable processing conditions limit their compatibility with low-cost, flexible, and printable electronics. He…
The reaction of the hydrazone, 2-methoxy-6-(pyridin-2-yl-hydrazonomethyl) phenol (LH) with lanthanide(iii) nitrate salts in the presence of excess triethylamine afforded the heptanuclear Ln(iii) complexes: [Gd7(L)6(μ3-OH)8(NO3)4(H2O)]·(NO3)3·8CH3CN·H2O (), [Tb7(L)6(μ3-OH)8(NO3)4]·(NO3)3·9CH3CN·2CH3OH·3H2O (), [Dy7(L)6…
The interaction between the main operational variables during the growth of vertically aligned multiwalled carbon nanotubes (VA-MWCNTs) by catalytic chemical vapor deposition is studied. In this contribution, we report the influence of the carbon source (i.e. acetylene, ethylene and propylene), the reaction/activation…
Four (N-vinyl carbazole)-based polymers were prepared through two facile synthetic strategies including both free radical polymerization and oxidative polymerization in different sequences. N-vinyl carbazole containing an ethylenic bond and a carbazole group is a superior candidate to study the effects of polymerizati…
Macrocyclization between tetrathiafulvalene (TTF) dithiolates and bis-bromomethylazobenzenes/bis-bromomethylstilbenes is investigated under high dilution conditions. We show that macrocycles of different size can be formed depending on whether the (Z)- or (E)-isomers of azobenzene (AB) or stilbene are used. This repre…