Materials Literature
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Self-assembly of various phthalocyanine (Pc) molecules and a derivative on an epitaxial graphene monolayer (MG) has been investigated by means of in situ ultrahigh vacuum scanning tunneling microscopy. The formation of regular Kagome lattices that duplicate the lattice of the moire pattern of MG was observed, demonstr…
Tailor-made synthesis and structure-property relationship of several swallow-tail N-substituted perylene bisimide (PBI) dyes are presented. PBI derivatives were synthesized by two distinct synthetic approaches, the details being evaluated herein. All the PBIs carry either alkyl swallow-tail or oligoethylenglycolether…
Cobalt ferrite magnetic nanostructures were synthesized via a high temperature solution phase method. Spherical nanostructures of various sizes were synthesized with the help of seed mediated growth of the nanostructures in organic phase, while faceted irregular (FI) cobalt ferrite nanostructures were synthesized via…
Topographical cues play an important role in influencing cellular behavior and are considered as significant parameters to be controlled in tissue engineering applications. This work investigated the biocompatibility with regard to scaffold architecture and topographical effect of nanofibrous scaffolds on the in vivo…
The discovery of fullerenes in 1985 opened a new chapter in the chemistry of highly symmetric molecules. Fullerene-like metal clusters, characterized by (multi)shell-like structures, are one rapidly developing class of molecules that share this shape. In addition to creating aesthetically pleasing molecular structures…
The advanced high-quality synthesis of dense and porous silica-coated nanostructures is enjoying ever-increasing research interests for their important properties and diverse applications, especially for catalytic, controlled release, colorimetric diagnostics, photothermal therapy, surface enhanced Raman scattering (S…
The thermoelectric transport properties of polycrystalline, $n$-type ${\text{Ba}}_{8}{\text{Ga}}_{16\ensuremath{-}x}{\text{Ge}}_{30+x}$ were characterized from 300 to 1000 K. The carrier density was found to vary precisely with the experimental $x$ as expected from simple electron counting. The experimental data are a…
Abstract Extensive application of chemical thermodynamics to exotic aggregation formed in thermotropic liquid crystals is briefly described. Through thermodynamic analyses and considerations of experimental results on liquid crystals, the unexpected sharing of common properties by thermo- and lyotropic liquid crystals…
Ruthenium (Ru) nanoparticles incorporated into the pore walls of porous carbon was used as a catalyst in glucose hydrogenation to produce sorbitol. In comparison with other catalysts, including commercial catalysts and catalysts prepared using other methods, the Ru-C nanostructured catalyst displayed higher catalytic…
We observe pore formation with diameters in the 10 nm range in silicon when it is covered with gold particles. This pore etching occurs when the sample is put in 5 wt % hydrofluoric acid (HF) solution for a few minutes. The pores form along the 100 direction, which is also the preferred direction of macro- and mesopor…
A systematic investigation of the correlation between optical absorption and the size of graphite\nnanostructures is presented. Five different samples with structure diameters ranging from ∼160\nto 330 nm and heights from ∼60 to 190 nm were prepared. The disk-like nanostructures were\netched out of the basal plane sur…
The new silicates K2Si(NCE)6, E = O, S (1a,b) were synthesised directly by reaction of silicon tetrachloride with potassium cyanate or thiocyanate. 1a,b can be converted to the salts (PPN)2[Si(NCE)6] (2a,b) with bulky cations (PPN+ = N(PPh3)2+), which contain isolated silicate dianions. Reaction of 1a with diimines af…
Abstract The performance of a polymeric electret material depends on many parameters, and besides chemical structure, charging conditions, and application temperature, other factors, such as grade, manufacturer, processing history, and additive package, are critical. Commercial polyetherimide (PEI) Ultem®1000 films ex…
To understand the nature of the high-temperature phase transition and the origin of proton conductivity in rubidium dihydrogen phosphate RbH 2 PO 4, (RDP), we utilized variable-temperature 1 H, 31 P, and 87 Rb MAS NMR at 11.7 and 21.1 T. The variable-temperature 1 H MAS NMR spectra do not show water peaks in the tempe…
Defects in graphene give rise to zero modes that are often related to the sharp peak in the local density of states near the defect site. Here we solved all zero modes induced by a single defect in the finite-size graphene and show that their contributions to the local density of states vanish in the thermodynamic lim…
Following previous cyclic voltammetric studies of tetrakis(thiadiazole)porphyrazines [TTDPzM] where M = Zn(II), Mg(II)(H(2)O), Cu(II), or 2H(I) in nonaqueous media, a thin-layer spectroelectrochemical investigation was carried out in pyridine to characterize each stepwise one-electron reduction of the electrogenerated…
The synthesis and characterization of a tris-pyridyl/bis-β-diketone molecule (H2L) is reported. This compound acts as a hexadentate ligand towards CoII to facilitate the assembly of a tetranuclear molecular chain of closely spaced metals with formula [Co4L2(MeOH)8](NO3)4 (1), which exhibits a very flat [Co4L2]4+ platf…
Gelatin and DNA are abundant natural products with very good biodegradation properties and can be used to obtain acetic acid or LiClO<sub>4</sub>-based gel polymer electrolytes (GPEs) with high ionic conductivity and good stability. This article presents the results of the ionic conductivity measurements of GPEs membr…
Abstract Polymer‐clay nanocomposites are materials with many interesting structures, properties, and potential applications. Microstructural evaluation of a nanocomposite is not an easy task, as clay may form hierarchical structures which may look different when observed at various magnifications under a microscope, a…
We report the near-edge x-ray absorption spectroscopy (NEXAFS) at the Co/Mn L(3,2) edge and oxygen K edge of the well-characterized Bi-substituted Co(2)MnO(4) multiferroic samples. The evolution of peak features in NEXAFS spectra of the Co/Mn L(3,2) edge and O K edge show the Bi-induced redistribution of magnetic cati…