Materials Literature
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Herein, we perform a comparative investigation on the reactivity of pristine and lithium doped monolayer and bilayer graphene. To study the addition of free radicals and 1,3 dipolar cycloadditions, we employed periodic DFT calculations. In all cases lithium increases the reactivity, even though the effect is weaker fo…
Stabilizing single-walled carbon nanotubes (SWNTs) monodispersed in diameter and chirality in aqueous media remains elusive. Surfactants have proven useful in deploying ultracentrifugation techniques for separating carbon nanotubes, but the molecular mechanism responsible for the effectiveness for such technique remai…
Sound propagation in water-saturated granular sediments is known to depend on the sediment porosity, but few data in the literature address both the frequency and porosity dependency. To begin to address this deficiency, a fluidized bed technique was used to control the porosity of an artificial sediment composed of g…
By converting waste heat into electricity through the thermoelectric power of solids without producing greenhouse gas emissions, thermoelectric generators could be an important part of the solution to today's energy challenge. There has been a resurgence in the search for new materials for advanced thermoelectric ener…
Abstract A novel tribenzotetraazaporphyrin with a fused azulene ring was synthesized via mixed condensation reaction of 5,6-dicyanoazulene and 3,6-dibutoxyphthalonitrile. The macrocycle exhibited several intense absorption peaks from 600 to 900 nm. The spectroscopic properties were analyzed by DFT calculations.
Abstract Molecules with two orthogonally oriented π-systems (cruciforms) have attracted interest by virtue of the different conjugation pathways that exist between the individual parts of the molecule. In particular, the possibility for changing the conjugation pathways by an external stimulus may provide controllable…
The long‐range ordered cuprous oxide nanostructured superlattice ( Lα‐Cu 2 O ) was synthesized using sodium dodecyl sulfonate ( SDS ; C 12 H 25 SO 3 Na ) as supermolecular template in water‐ethanol media via a facile reflux method. CuCl 2 , glucose and NaOH served as Cu source, reductant and precipitant, respectively.…
Abstract Bent bridging ligands appending dendrons (G-1, G-2, and G-3) at their concaves are complexed with Pd(II) ions to self-assemble into M12L24 spherical shells confining inversely branched dendrimers. Their structures were fully characterized by NMR, CSI-TOF-MS, and AFM.
BiFeO 3 /(Bi,Gd)FeO 3 (BFO/BGFO) bilayered thin films with different BGFO layer thicknesses were grown on SrRuO 3 /Pt/TiO 2 /SiO 2 /Si (100) substrates using radio frequency sputtering. The grain size of BFO layer changes with the thickness of BGFO layer, and the BGFO layer decreases the leakage current density of BFO…
Abstract Nanospheres formed by self-assembly of trigonal glutathione (TG) underwent disulfide recombination upon addition of dithiothreitol. Guest molecules encapsulated in the nanospheres were gradually released during the recombination process.
Effect of sintering atmosphere on the microstructure and electrical properties of the doped BSCT ceramics was investigated. More oxidizing sintering atmosphere weakened the donor‐incorporation effect in the sample and improved the density, grain size, resistivity, and dielectric properties. Especially, when the sinter…
Abstract Novel pentacyclic ladder oligomethylsilsesquioxane was synthesized using cis,trans,cis-[MeSi(NCO)O]4 as a building block. This compound was isolated in 13% yield by reprecipitation from the reaction mixture. X-ray crystallography revealed that pentacyclic rings assume a syn,anti,syn-configuration, resulting i…
Abstract To develop a molecular imaging probe for potassium cation based on the chemical shift change of 19F magnetic resonance (MR), thrombin aptamer, whose structure was changed with the selective binding of potassium cation, was labeled with a fluorine compound. We demonstrated that the probe could detect potassium…
Abstract There is increasing interest in nanostructures and in the molecular design of building blocks which self-assemble into nanoscaled intelligent materials. We outline a method for controlling the nanostructures of amphiphilic nonapeptides by changing the pH of the aqueous medium. A lysine residue on the hydrophi…
Abstract The thermodynamics of the exchange of solubilizers adsorbed on single-walled carbon nanotubes (CNTs) is probed by analysis of the spectral shifts of the CNTs in the near-infrared region. Equilibrium constants and thermodynamic parameters of the exchange of sodium cholate for DNA (20-mers of oligo DNAs, cytosi…
Amorphous trehalose finds extensive use as a stabilizer of biomolecules including proteins and phospholipids. Hypothesizing that molecular mobility is a determinant of its stability, dynamic dielectric spectroscopy (DDS) was used to map the different modes of mobility. Isothermal dielectric relaxation profiles of amor…
Multilayer films composed of individual layers of [Sb(8.84 Å)/Se(12.6 Å)](Sb4Se6), [Sb(8.84 Å)/Se(7.2 Å)](Sb4Se4), and [Sb(15.4 Å)/Se(7.2 Å)](Sb6Se4) were synthesized using effusion cells controlled at the subatomic scale. After an annealing process, the Sb4Se6 multilayered film with an Sb 2 Se 3 orthorhombic structur…
Abstract C-type cubic (Yb1−xTbx)2O3±δ (0 ≤ x ≤ 0.62) catalysts were synthesized by coprecipitation. Among the samples prepared, (Yb0.50Tb0.50)2O3±δ showed the highest catalytic activity and high tolerability for O2 or CO2 coexistence was recognized. In particular, the negative effect of CO2 on the NO decomposition act…
The polilactic acid (PLA), is a thermoplastic biopolymer which precursor molecule is the lactic acid. Due to its biodegradability, barrier properties and biocompatibility; this biopolymer had found industrial and medicals applications since it presents a wide range of unusual properties, from the amorphous to the crys…
Silver nanoparticles (Ag NPs) are easily dispersed and stable, and their application has become widespread. Consequently, concern has arisen regarding their potential effects on the environment and human health. However, the current understanding on the stability of Ag NPs is limited. Therefore, in this study the infl…