Materials Literature
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We performed molecular simulations of polymer crystallization confined in rigid nanotubes. We found that the neutrally repulsive walls of nanotubes enhance the crystal nucleation. This enhancement gives uniform crystal orientation parallel to the tube axis at high temperatures. However, the nanotube walls that are wet…
Donor-substituted triarylboranes are investigated by femtosecond absorption spectroscopy to study the influence of molecular symmetry on solvation. In solvents of varying polarity and differently fast solvation response, the solvation dynamics of a highly symmetric triple carbazole-substituted triarylborane (TCB) is c…
Biocompatibility, biodistribution, biodegradation, inflammation and interference with cell and normal functioning of tissues, among others, will determine the toxicity of engineered inorganic nanoparticles and carbon nanostructures, and therefore the extent of their use. Recent examples in the literature show that eng…
The present study is aimed at the overall improvement in the efficacy, reduced toxicity and enhancement of therapeutic index of cisplatin. Solid lipid nanoparticulate delivery system of cisplatin has been developed by microemulsification method by using stearic acid, soy lecithin 95% and sodium glycolate. The formulat…
Ni-nitrilotriacetic acid (NTA) functionalized CdSe/ZnS quantum dots (QDs) were exploited as a site-specific labeling agent of histidine-tagged biomolecules in live cells; the QDs were found to be water-soluble, aggregation free and stable for several months.
OBJECTIVE: The objective of this study was to evaluate the effect of gold nanoparticles on renal cell. INTERVENTION: This study was performed as an experimental study. A mixture of gold nanoparticle solution and renal cell sediment was prepared and further analyzed. RESULTS: This work revealed that after mixing the re…
A novel nano-sized tetragonal pyramid-shaped porous ZnO (TPSP-ZnO) structure was, for the first time, prepared with a high morphological yield by a simple polyglycol-assisted wet chemical method. It was found that the polyglycol had a significant influence on the nucleation and pore formation in the ZnO nanostructure.…
Reaction of an ethylenediamine solution of K(4)Ge(9) with Hg(C(6)H(5))(2) yielded [Hg(3)(Ge(9))(4)](10-), an unprecedented mercury-linked molecular rod consisting of four nine-atom germanium clusters.
l-Valine-based oligopeptides with the chemical structure Z-(l-Val)3-OMe and Z-(l-Val)2-l-Cys(S-Bzl)-OMe form stable organogels in butanol. Both peptides are efficient gelators, but Z-(l-Val)2-l-Cys(S-Bzl)-OMe crystallizes more readily than Z-(l-Val)3-OMe. The two peptides can form mixed fibers, which also gel butanol.…
Positively-charged crystalline zinc hydroxide nanostrands with a diameter of 2 nm and a length of a few micrometres rapidly grew in dilute aqueous solution of zinc nitrate and aminoethanol. The nanostrands were composed of hexagonal clusters of [Zn(61)(OH)(116)(H(2)O)(n)](6+).
Quantum-dot structures based on the CdTe, ZnTe, and CdSe semiconductors are prepared by molecular-beam epitaxy, colloid chemistry methods, and ball milling, and their Raman spectra are studied. Localized longitudinal phonons are observed in all spectra. The dependence of the localized phonon frequency on the thickness…
We use coordinate transformation theory to realize substrates that can modify the emission of an embedded source. Simulation results show that with proper transformation functions the energy radiated by a source embedded in these space variant media will be concentrated in a narrow beam. The thickness of the slab achi…
The behaviour of water confined in an imogolite nanotube was studied by means of molecular dynamics simulations. The results of the study show an important difference between the interaction of water molecules with the internal and external surfaces of the nanotube. The analysis of the density profiles of confined mol…
Currently marketed mechanical or biological prosthetic heart valves are regarded as valid substitutes for native heart valves suffering from degenerative pathologies. These devices require strict follow-up due to dysfunctions or post-surgical complications. Potential drawbacks of these medical devices are calcificatio…
our paper reporting Tc of 26K in LaFeAsO 1-x F x was published on line in the Journal of American Chemical Society. The present article describes our research flow to this discovery and summarizes research advances on Fe (Ni)-based superconductors since then. Emphases are placed on that (1) all the superconducting mat…
The surface of a dense Ni–yttria-stabilized zirconia (YSZ) anode for solid oxide fuel cells (SOFCs) was modified with niobium oxide in order to achieve sulfur tolerance. Results suggest that was reduced to under SOFC operating conditions, which has high electrical conductivity and catalytic activity toward hydrogen ox…
The $\Gamma$-limit of the Ohta–Kawasaki density functional theory of diblock copolymers is a nonlocal free boundary problem. For some values of block composition and the nonlocal interaction, an equilibrium pattern of many spheres exists in a three-dimensional domain. A subrange of the parameters is found where the mu…
Seven 3-D (3D) metal–organic framework solids [Nd2(pyta)2(H2O)6]n1 and {[Ln2(pyta)2(H2O)x]·yH2O}n (Ln = Sm 2, Eu 3, Gd 4 with x = 3, y = 2.5; Ln = Tb 5 with x = 2, y = 2.5, Ln = Dy 6, Ho 7 with x = 2, y = 2), H3pyta = 2,4,6-pyridinecarboxylic acid) have been prepared under hydrothermal conditions. X-Ray structural ana…
Utilizing biological pathways for producing components of nano-electronic devices is increasingly attracting researchers' attention. There are many reports of the artificial biomineralization of inorganic nanoparticles (NPs), such as conductive-material/semiconductor NPs, in the hollow cavities of cage-shaped protein…
The photochemical and electrochemical properties of self-assembled monolayers (SAM) of three structurally distinct hexahydro- and hexafluoro-dithienylcyclopentene-based photochromic switches on gold electrodes are reported. The photochemical and electrochemical switching between the open and closed forms of the dithie…