Materials Literature
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A quick and convenient method was developed to synthesize organically functionalized silicon nanocrystals via a one-step reaction, which is a green chemistry route.
The present study investigated the antimetastatic property of chitosan oligosaccharides (COS) by evaluating motility, invasion, and the amount and activity of MMP-9 in MDA-MB-231 human breast carcinoma cells. Treatment of MDA-MB-231 cells with increasing concentrations of COS led to a concentration-dependent decrease…
We investigate the fundamental necessary conditions for optical generation of nitrosyl linkage isomers in ML(5)NO compounds (M = transition metal, L arbitrary ligand) on the examples of K(3)[Mn(CN)(5)NO].2H(2)O and Na(2)[Fe(CN)(5)NO].2H(2)O. We show that the NO linkage isomers of the side-on bonded type (SII, 90 degre…
The temperature dependence of the magnetic susceptibility, optical reflectivity and electrical conductivity of [Fe(HB(pz)3)2] (pz = pyrazolyl) revealed irreversible changes in the material during the low-spin to high-spin transition when the “as-prepared” sample was heated above ∼400 K for the first time. During this…
This highlight article is devoted to catalytic applications of mesoporous materials containing transition metal oxides (Ti, Nb and Ta). In general, these mesoporous molecular sieves (MMS) can be readily modified by doping with other elements, reduction or acid treatment to extend their applications in catalysis. We hi…
Carbon nanotubes; revolutionary and fascinating from the materials point of view and exceedingly sensational from a research point of view; are standing today at the threshold between inorganic electronics and organic electronics and posing a serious challenge to the big daddies of these two domains in electronics i.e…
Four compositions of Ba(1-x)Sr(x)Co(1-y)Fe(y)O(3-delta) were studied for phase, oxygen uptake-release, and transition metal (TM) oxidation states after solid state processing and with in situ heating from 300 to 1273 K in air. X-Ray diffraction showed that all compositions except one had the cubic perovskite structure…
Vanadium pentoxide was deposited by atomic layer deposition (ALD) from vanadyl-tri-isopropoxide (VTIP). Water or oxygen was used as a reactive gas in thermal and plasma-enhanced (PE) processes. For PE ALD, there was a wide ALD temperature window from 50 to . Above , VTIP decomposed thermally, resulting in the chemical…
Dysprosium-doped oxyfluoride glasses and nanocrystalline glass ceramics have been synthesized and studied by x-ray diffraction, absorption, and visible and near-infrared emission spectra. The samples emit intense white light when populating the F49/2 level with a 451 nm laser light and, from the visible emission spect…
This Review article details the preparation and encapsulation–release properties of novel amphiphilic hyperbranched polymers with a micellar characteristic as a single molecule, which are referred to as “unimolecular micelles” or “unimolecular nanocapsules”. Amphiphilic hyperbranched polymers consisting of a hydrophil…
There is contemporary research interest in the development of second-order nonlinear optical materials exhibiting large first hyperpolarizabilities (β) for possible applications in electro-optic devices. In this article, the structure–property relationships of octupolar molecules such as tris(bipyridyl) metal ion comp…
Based on the broadside-coupled split-ring resonator (BC- SRR), a tunable left-handed metamaterial (LHM) was proposed in this paper.The two rings of BC-SRR are etched on two separate substrates so that the coupling between the two rings can be adjusted by slightly slipping one of the two substrates relative to the othe…
Abstract: The aim of this study is to investigate the effect of alkali and SLS (Sodium Lauryl Sulphate) treatment on Banana/Kenaf Hybrid composites and woven hybrid composites. The fibers are treated with 10 % of sodium hydroxide (NaOH) and 10 % Sodium Lauryl Sulfate (SLS) for 30 minutes. Woven banana and kenaf fiber…
25 wild plants were collected from the south of Tunisia. The dried aerial parts were extracted under a continuous reflux set-up in a Soxhlet extractor with hexane, ethyl acetate, methanol and water. The extracts were screened for total phenolic content, antioxidant and antimicrobial activities. Total phenolic contents…
Two novel silicon(IV) phthalocyanines substituted axially with two BODIPY or mono-styryl BODIPY moieties have been synthesised, which exhibit predominantly a photo-induced energy or electron-transfer process in toluene depending on the axial substituents.
An improved pegylated liposomal formulation of docetaxel has been developed with the purpose of improving the docetaxel solubility without any need to use tween80 that is responsible for hypersensitivities following administration. Liposomes all had spherical shape with size of 130–160 nm. The most important finding o…
The possibilities of vacancy-induced magnetism in perovskite BaTiO(3) are investigated by first-principles calculations. Calculated results show that both titanium and oxygen vacancies could induce magnetism, but the barium vacancy did not induce magnetism. New and interesting magnetic properties of half-metallic magn…
Cobalt oxide (Co(3)O(4)) nanopolyhedrons and nanosheets were controlled synthesized at the low temperature of 80 degrees C via a novel, simple, aqueous method; the obtained nanosheets are only 2-3 nm thick.
We show that bent-core liquid crystalline materials exhibit non-Newtonian flow in their optically isotropic liquid phase. We conjecture that this behavior is due to the existence of nanostructured, fluctuating clusters composed of a few smectic-like layers. Shear alignment of these clusters explains the shear thinning…
A racemic bis(nitrile) ligand based on the Tröger's base scaffold self-assembles into an achiral dinuclear heterochiral rhomb in a diastereoselective self-discrimination process; this occurs upon coordination to (dppp)Pd(OTf)(2) as evidenced by nmr spectroscopy and X-ray crystal structure analysis.