Materials Literature
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Recently, two-dimensional transition metal dichalcogenides have intrigued much attention due to their promising applications in optoelectronics. The electrostatic property investigation of WSe2 nanostructures is essential for device application. Here, the interlayer screening effects of WSe2 nanoplates with different…
A short study on bromination of multiwalled carbon nanotubes (MWCNTs) through new and convenient methods was reported. Bromine (Br) is chemically attached on MWCNTs surfaces through electrophilic addition and radical reactions using N-Bromosuccinimide (NBS), NH4NO3/NBS and Br2 under thermal and UV conditions. Function…
Quantum chemical calculations have been carried out to study the interactions of boron nitride nanotubes (BNNTs) with Al, Ti, and Cu atoms. The interaction of these metals with pristine BNNTs, BNNTs with B or N vacancy defects, and BNNTs with C substitution have been investigated. Our results indicate that Ti exhibits…
Three sandwich-type inorganic–organic hybrid solids based on iso-polyvanadate cluster, {V 4 O 12 } 4–, {H 2 V 6 O 18 } 4–, or {H 2 V 10 O 28 } 4–, and decamethylcucurbit[5]uril (Me 10 CB[5]) have been synthesized under hydrothermal conditions. In the structures of (NH 4 ) 4 [(V 4 O 12 )·(Me 10 CB[5]@0.5H 2 O) 2 ]·∼15H…
A facile method for preparing nickel hydroxyl nanoparticles loaded graphene aerogels has been established. The prepared aerogels were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. Their applications as…
Abstract Subporphyrin B‐peroxides have been synthesized in good yields by acid‐catalyzed exchange reactions of subporphyrin B‐methoxide with the corresponding hydroperoxides. Thermal dimerization of the subporphyrin B‐hydroperoxide provided the peroxo‐bridged bis(subporphyrin) quantitatively. These subporphyrin B‐pero…
Structuring ionic solids at the nanoscale with block copolymers (BCPs) is notoriously difficult due to solvent incompatibilities and strong driving forces for crystallization of the inorganic material. Here, we demonstrate that elucidating pathway complexity in the BCP-directed self-assembly of an ionic solid, amorpho…
The emergence of the electron-pocket-only iron-based superconductor ${A}_{x}\mathrm{F}{\mathrm{e}}_{2\ensuremath{-}y}\mathrm{S}{\mathrm{e}}_{2} (A=\mathrm{alkali}\phantom{\rule{0.28em}{0ex}}\mathrm{metal})$ challenges the Fermi-surface nesting picture established in iron pnictides. It was widely believed that magnetis…
The plasmonic response of nanoshells with different geometries is calculated using effective medium theory (EMT). The cases of multishell nanospheres, spheroids, and nested nanocubes are investigated. The model is extended to include radiation and nonspherical geometries to study confocal and nonconfocal ellipsoidal n…
An investigation of the model of porous silicon in the form of periodic set of silicon nanowires has been carried out. The electronic energy structure was studied using a first-principle band method-the method of pseudopotentials (ultrasoft potentials in the basis of plane waves) and linearized mode of the method of c…
Ligand-protected gold (Au-L) nanoclusters have attracted much attention due to their unique properties, and the superatom concept as a significantly well-known concept to explain the electronic stability was suggested. Although there has been a lot of major progress in this field, size evolution of the superatom is st…
The effect of specific surface area (SSA) and the purity of Fe2O3were investigated while evaluating the raw material of Sr-hexaferrite preparation. For anisotropic hard ferrite, both SSA and purity of Fe2O3were found, which markedly affect the grain growth and the magnetic properties. Increase of SSA in Fe2O3resulted…
A series of cardo poly(ether sulfone imide)s (PESI-C) containing bulky phthalide groups were prepared via aromatic nucleophilic substitution reaction of phenolphthalein with 4,4′-difluorodiphenyl sulfone and 4,4′-bis(4-fluorophthalimido)diphenyl ether (BFPI). The glass transition temperatures and 5% weight loss temper…
NIST in Boulder, CO investigated the correlations between impact test results obtained from standard, full-size Charpy V-notch (CVN) specimens and specimens with reduced thickness (subsize Charpy V-notch specimens (SCVN)) or reduced or scaled cross section dimensions (miniaturized Charpy V-notch specimens (MCVN)). A d…
Iijima's 1991 discovery brought to the attention of the research community a new allotrope of carbon: carbon nanotubes (CNTs).Since then CNTs have been extensively studied and have demonstrated to be of great potential in various industrial and biomedical fields of application [1].CNTs can be described as rolled-up sh…
Abstract A tri-layered composite structure of gold/ZnS/gold, with the top gold layer patterned into a periodic array of circular holes, was fabricated by laser interference lithography and lift-off processes. This plasmonic composite absorbing structure showed a series of enhanced absorption peaks across the visible t…
A series of metal cation modified layered-double hydroxides (LDHs) and mixed oxides were prepared and used to be the selective oxidation of toluene with O2. The results revealed that the modified LDHs exhibited much higher catalytic performance than their parent LDH and the modified mixed oxides. Moreover, the metal c…
Abstract New iron(II) coordination polymers with solvent‐dependent spin‐crossover behaviour have been synthesised by using an N2O2 Schiff base like ligand and 4,4′‐dipyridylethyne as the bridging axial ligand in different solvents. The effects of different solvents and preparation methods (temperature, concentration)…
Abstract A periodic mesoporous organosilica (PMO) that contains ethylene bridges was functionalized to obtain a series of cooperative acid–base catalysts. A straightforward, single‐step procedure was devised to immobilize cysteine and cysteamine on the support material by means of a photoinitiated thiol‐ene click reac…
Diameter control in the synthesis of single-walled carbon nanotube (SWNT) arrays is vital to the control of their properties and their integration into practical devices. Controlling the size of catalyst nanoparticles (NPs) and following a tangential nucleation mode has been shown to be an effective approach to diamet…