Materials Literature
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Sulfamide derivatives showed high ability to form hydrogen-bond-directed two-dimensional (2-D) sheet assemblies of nanometer thickness. Further, fine-tuning of the side chain structures and preparation conditions allowed for the formation of micrometer-sized giant vesicles of 4b in water by the simple injection method…
Maintaining constant temperature is of particular importance to the normal operation of electronic devices. Aiming at the question, this paper proposes an optimum design of nanostructures made of high thermal conductive nanomaterials to provide outstanding heat dissipation from the confined interior (possibly nanosize…
The galactose/glucose-binding protein from E. coli (GGBP) is a 32 kDa protein possessing the typical two-domains structure of the ligand-binding proteins family. GGBP is characterized by low dissociation constant values with respect to glucose binding, displaying an affinity constant for glucose in micromolar range. T…
Hydrogen-bonded assemblies of the two-electron reduced mixed-valence Keggin clusters [PMo(12)O(40)](5-) and [SiMo(12)O(40)](6-) were obtained by the one-pot electron-transfer reactions between p-phenylenediamine (PPD) or 2,3,5,6-tetramethyl-PPD (TMPPD) (donors) and H(+)(3)[PMo(12)O(40)](3-) or H(+)(4)[SiMo(12)O(40)](4…
The influence of external magnetic field on the orientational structure of a ferronematic liquid crystal is analyzed. We use modified Rapini potential for the anisotropic part of coupling energy between the ferronematic and the limiting surfaces. We show that under magnetic field action one of three ferronematics phas…
Abstract In this work, we present the first Pickering emulsion polymerization with a controlled/living character. Pickering emulsion polymerization in the presence of a novel suspension of zinc oxide/poly(sodium 4‐styrenesulfonate) (ZnO/PSS − ) nanocomposite particles was applied to prepare ZnO/living block copolymer…
Based on a combination of colloidal self-assembly and atomic layer deposition, a facile approach is developed to create novel, high-quality, ordered cage structures of anatase TiO2 with shape and morphology control using Ag nanocrystals of different shapes as templates.
A novel class of 1,4,7,10-tetraazacyclododecane-1,4,7-tris(methylenecarboxylic) acid (DO3A)-based lanthanide complexes with relaxometric response to Ca(2+) was synthesized, and their physicochemical properties were investigated. Four macrocyclic ligands containing an alkyl-aminobis(methylenephosphonate) side chain for…
A triply fused porphyrin dimer bearing long alkyl chains for enhanced solubility was prepared and investigated for its ability to supramolecularly functionalize single-walled carbon nanotubes. It was found that this porphyrin dimer indeed binds strongly to the nanotube surface, allowing the removal of excess unbound p…
Abstract Poly(methyl methacrylate)s (PMMAs) of two different molecular weights having a single photochromic benzospiropyran (BSP) end‐group were synthesized by atom transfer radical polymerization (ATRP). Polymer characterization by 1 H NMR and matrix‐assisted laser desorption/ionitiation time of flight‐mass spectrosc…
Mesogens with a chalcone central linkage are rare. It is believed that the chalcone linkage is not conducive to mesomorphism. But when chalcone linkage is present with other central linkages like azomethine, ester or azo it becomes condusive to mesomorphism. In the present study two new homologous series viz. 1-(4′-bu…
Facilitated ion transport across an artificial lipid bilayer coupled to a solid substrate is a function common to several types of bioelectronic devices based on supported membranes, including biomimetic fuel cells and ion channel biosensors. Described here is fabrication of a pH-sensitive transducer composed of a por…
The conformational properties of the hybrid amphiphile formed by the conjugation of a hydrophobic peptide with four phenylalanine (Phe) residues and hydrophilic poly(ethylene glycol), have been investigated using quantum mechanical calculations and atomistic molecular dynamics simulations. The intrinsic conformational…
We present a the survey of research on diatom taxa from the Brazilian Central-Western region, indicating priority areas for the study of these organisms. We registered 38 studies (16 dissertations/ theses, one report, 19 studies in periodicals and two book chapters) during the period from 1970 to 2009. Sixty-four gene…
We examined the thermal conductivity of the (Bi${}_{2}$)${}_{m}$-(Bi${}_{2}$Te${}_{3}$)${}_{n}$ alloys, which are composed of alternating sequences of Bi${}_{2}$ and Bi${}_{2}$Te${}_{3}$ structural units. The phonon thermal conductivity of these alloys was sharply reduced relative to that of elemental Bi and Bi${}_{2}…
A novel method has been developed to physically exfoliate graphite and uniformly disperse Pt nanoparticles on graphite nanoplates without damaging the graphene structures. A stable aqueous suspension of graphite nanoplates was achieved by benzylamine-assisted noncovalent fuctionalization to graphite and characterized…
The behaviour of methane molecules inside carbon nanotubes at room temperature is studied using classical molecular dynamics simulations. A methane molecule is represented either by a shapeless super-atom or by a rigid set of five interaction centres localized on atoms. Different loadings of methane molecules ranging…
PANI-CSA-Ni composite nanowire was successfully synthesized using camphor sulfonic acid (CSA) as dopant as well as surfactant. In this process, CSA-ANI micelles act as soft template facilatating the formation of PANI nanowire. PANI-CSA-Ni nanowire composite was characterized by transmission electron microscope (TEM),…
A cross-point phase change memory (PCM) cell working close to its ultimate scaling limit is demonstrated for the first time with an ultra low reset current of 1.4µA and set current of 0.5µA. This is the lowest value ever reported. Carbon nanotubes (CNTs) are utilized as the bottom electrode of the cell, which bring th…
Cobalt nanocrystals (NCs) with narrow size distribution and polycrystalline structure in their native form are synthesized in reverse micelles. After annealing at 350 °C, these NCs are transformed into single crystalline phase with hexagonal close-packed structure. The vibrational dynamics of NCs differing by their na…