Materials Literature
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We present a facile and low temperature approach for the fabrication of flexible organic electronic devices by growing high aspect ratio nanorod arrays of potassium 7,7,8,8-tetracyanoquinodimethane (KTCNQ), a crystalline organic semiconductor with charge transfer capabilities, on cotton threads interwoven within the t…
Large scale production of high quality CNT samples is still challenging. The presence of structural defects and metallic particles in pristine single walled carbon nanotubes (SWNTs) is responsible for the alteration of both their chemical stability and their magnetic and electrical properties. The commonly used purifi…
Copolymerization of L-LA and TMC has been achieved with binary systems, associating either a metal-based (pre)catalyst or an organocatalyst with benzyl alcohol (BnOH) acting as a co-initiator and a chain transfer agent. Kinetic monitoring indicated that copolymerizations mediated by the zinc-β-diketiminate system [(BD…
Silver nanoparticles are extensively used in antibacterial applications. However, the mechanisms of their antibacterial action are not yet fully explored. We studied the solubility-driven toxicity of 100 × 6100 nm (mean primary diameter × length) silver nanowires (NWs) to recombinant bioluminescent Escherichia coli as…
In this paper, NaYF4 microcrystals with a variety of morphologies, such as microsphere, hexagonal prism, microtube and octahedron shapes, have been synthesized via a hydrothermal method using sodium poly(4-styrenesulfonate) (PSS) as a template. The structural and kinetic factors that govern the phase and shape evoluti…
The continuous decrease on the geometric size of electronic devices and integrated circuits generates higher local power densities and localized heating problems that cannot be characterized by conventional thermographic techniques. Here, a self-referencing intensity-based molecular thermometer involving a di-ureasil…
A novel route of reactive calcination (RC) of Cu-salts for the synthesis of highly active catalysts was studied for the first time. The route involved feeding a low concentration of a chemically reactive-CO–air mixture over the salts at low temperature (160 °C). The RC of the precursor produced copper species (Cu2O an…
The skeletons of corals are made of calcium carbonate by biomineralization process, in the form of aragonite or calcite. To understand the characteristics of coral skeletons, especially mineralogy, crystal phases, organization and structure in individual species, X-ray powder diffraction techniques have gained increas…
H2/D2 pulse isotope exchange experiments were employed for the first time to gain insight into the hydrogen oxidation mechanism of proton conducting solid oxide fuel cell electrode materials. Phase pure perovskites, BaCeO3 (BC), BaCe0.9Y0.1O3−δ (BCY), BaZrO3 (BZ) and BaZr0.9Y0.1O3−δ (BZY) were synthesized. The experim…
A facile way to fabricate functionalized and reduced graphene oxide (RGO) was reported by introducing the dual-function reagent N1-(3-trimethoxysilylpropyl) diethylenetriamine (TSPD), in which (i) the amine functional groups of the organosilane can effectively restore the π bonds of the GO; and (ii) the silanol parts…
Caged enzymes whose activities can be controlled by light represent a powerful tool for various biological analyses. However, limited methods are available for the construction of caged proteins and enzymes. We recently developed a novel protein labeling method termed ligand-directed acyl imidazole (LDAI) chemistry, w…
Layer-structured bismuth complex oxides Bi7Fe3−xNixTi3O21 (0 ≤ x ≤ 2) (BFNT) were synthesized using a low-temperature combustion synthesis method. X-ray diffraction patterns and high-resolution transmission electron microscopy analysis indicated that the samples presented a six-layer Aurivillius structure. Substitutin…
A series of Ti(IV), Zr(IV) and Hf(IV) benzotriazole phenoxide (BTP) complexes were synthesized and characterized by various spectroscopic techniques, elemental analysis and X-ray crystallography. The monosubstituted Zr(IV) BTP complexes [(μ-L)Zr(O(i)Pr)3]2 1-3 [L = (C1)BTP-H (1), (TCl)BTP-H (2), (pent)BTP-H (3)] and t…
This study used radio frequency sputtering at room temperature to prepare a zinc oxide (ZnO) thin film. After deposition, the thin film was placed in a high‐temperature furnace to undergo thermal annealing at different temperatures (300, 400, 500, and 600°C) and for different dwelling times (15, 30, 45, and 60 min). T…
An L-histidine ester terminated bolaamphiphile (BolaHis) was found to form hydrogels and self-assemble into single-wall nanotubes and single molecular thick fibers triggered by proton and copper ions, respectively. The hydrogels showed good tolerance to a concentrated acid environment and excellent selectivity towards…
Porous LiNb3O8 nanofibers have been successfully prepared through a simple electrospinning route followed by a post-treatment process. The obtained porous LiNb3O8 nanofibers are composed of polycrystalline LiNb3O8 nanoparticles and numerous nanosized pores. The resulting LiNb3O8 nanofibers exhibit improved capacity an…
Three types of Mn-based bimetal oxides (Co–Mn, Ni–Mn and Zn–Mn oxides) with well-defined mesoporosities and high specific surface areas were facilely synthesized by a template-free strategy of decomposing self-made single-phase bimetal oxalate. These bimetal oxides, featuring tunable compositions (spinel manganates) a…
In this work was studied the permeation of CO2 in films of high‐density polyethylene (HDPE) and organoclay modified with polyvinylalcohol (MMTHDTMA/PVA) obtained from melt blending. Permeation study showed that the incorporation of the modified organoclay generates a significant effect on the barrier properties of HDP…
Heating the spin-crossover (SCO) complex FeII(phen)2(NCS)2 (phen = 1,10-phenanthroline) under high vacuum results in the formation of red films that have been identified as [FeII(phen)3](SCN)2 by IR, Raman, and UV-Vis spectroscopy. After annealing the red films to ∼140 °C under vacuum, purple (paramagnetic) films form…
Polyvinylpyrrolidone (PVP) solutions incorporated with multiwall carbon nanotubes (MWCNTs) were electrospun at various weight percentages, and then the electrical resistance and some thermal properties of these nanocomposite fibers were determined using a high‐accuracy electrical resistance measurement device. During…