Increase in the production and release of engineered nanoparticles are known to induce genetic alterations that directly and indirectly affect the human health. The present study was aimed to evaluate the genotoxic potential of two metal oxide nanoparticles, silicon dioxide (SiO2-NPs) and titanium dioxide (TiO2-NPs), in human peripheral lymphocyte in vitro. Human peripheral blood cells were cul...

Fe2O3/Mn2O3 nanocomposites and impregnated porous silicates (Fe2O3/Mn2O3@SiO2 [FMS]) were prepared investigated as catalytic adsorbents. The catalysts applied for cationic anionic dye pollutants in the adsorption, Fenton reaction, photocatalysis processes at a pH of 7. nanoparticles (FM-NPs) using co-precipitation method SiO2 by sol–gel process. synthesized materials characterized various sophi...

Introduction: Further development of magnetic-based detection techniques could be significant use in increasing the sensitivity and quantification hepatitis B virus (HBV) infection. The present work addresses fabrication characterization a new bio-nano composite based on immobilization goat anti-HBsAg antibody modified core-shell magnetic nanoparticles (NPs) by (3-aminopropyl) triethoxysilane (...

A complete characterization of the different physico-chemical properties of nanoparticles (NPs) is necessary for the evaluation of their impact on health and environment. Among these properties, the surface characterization of the nanomaterial is the least developed and in many cases limited to the measurement of surface composition and zetapotential. The biological surface adsorption index app...

Treatment of the imine PhC(=NSiMe3)py with Et2BOMe or BF3·Et2O afforded bicyclic ketiminoboranes and via intramolecular N-coordination. The basicity of the imine N is evidenced by their reactivity towards Brønsted and Lewis acids and the structures of ·HCl and ·BF3 are reported as well as the dipyridyl imine derivative ·HCl.

The complexes [BX3(m-L L)BX3] (X 1⁄4 Cl, Br, I; L L 1⁄4 EtS(CH2)2SEt, MeSe(CH2)2SeMe), [BX03{oC6H4(SMe)2}] (X’ 1⁄4 Cl, I), [(BBr3)2{o-C6H4(SMe)2}], [(BBr3)2{o-C6H4(SeMe)2}] and [BI3{o-C6H4(SeMe)2}] have been prepared as moisture-sensitive pale solids by reaction of the appropriate BX3 with the dichalcogenoether in anhydrous n-hexane solution, and characterised by microanalysis, IR and multinucl...

Silica based multifunctional heterostructures, exhibiting near infrared (NIR) absorption (650-1200 nm) and luminescence in the visible region, represent innovative nanosystems useful for diagnostic or theranostic applications. Herein, colloidal synthetic procedures are applied to design a photoactive multifunctional nanosystem. Luminescent silica (SiO2) coated quantum dots (QDs) have been used ...

Gold nanoparticles with two different size distributions (average sizes of ∼1.5 and ∼5 nm) have been synthesized by inverse micelle encapsulation and deposited on reducible (TiO2) and nonreducible (SiO2) supports. The thermal and chemical stability of oxidized gold species formed upon cluster exposure to atomic oxygen have been investigated in ultrahigh vacuum using a combination of temperature...

In recent years, luminescent materials doped with Ln(3+) ions have attracted much attention for their application as optical thermometers based on both downshifting and upconversion processes. This study presents research done the development of highly sensitive in physiological temperature range poly(methyl methacrylate) (PMMA) films two series visible complexes (Ln(3+)=Tb3+, Eu3+, Sm3+) SiO2 ...