Materials Literature
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Rational materials design based on prior knowledge is attractive because it promises to avoid time-consuming synthesis and testing of numerous materials candidates. However with the increase of complexity of materials, the scientific ability for the rational materials design becomes progressively limited. As a result…
Abstract Nanocrystalline cellulose (NCC) is an emerging renewable nanomaterial that holds promise in many different applications, such as in personal care, chemicals, foods, pharmaceuticals, etc. By appropriate modification of NCC, various functional nanomaterials with outstanding properties, or significantly improved…
Many studies on low-energy limit indicate that band energy of graphene nanoribbon research (GNR) is linear while it illustrates parabolic characteristic with square root approximation model near the Fermi point (k = 0) and non-parabolic characteristic when wave vector is far away from Fermi point . We report that in p…
Poly(m-phenylenediamine) (PmPD) microparticles, from the monomer with two amino groups, were synthesized through chemical oxidation, and the strong adsorbability of mercury ions on to PmPD was systematically examined. The results revealed a rapid adsorption process with an equilibrium time of 30 minutes. Also, the ads…
Double-gate carbon nanotube field-effect transistors (DG-CNT-FETs) can be controlled in the field to be either n-type or p-type through an extra polarity gate. This results in an embedded XOR behavior, which has inspired several novel circuit designs and architectures. This work makes the following contributions. Firs…
The new concept, anion substitution, is explored for possible improvement of hydrogen storage properties in the system LiBH4–LiI. The structural chemistry and the substitution mechanism are analyzed using Rietveld refinement of in situ synchrotron radiation powder X-ray diffraction (SR-PXD) data, attenuated total refl…
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…