Poly(9,9-dihexylfluorene) with high molecular weight (Mw ∼ 81,000) is obtained in 25 min using a microwave-assisted FeCl3-mediated oxidative polymerization. The effects of microwave power, time, solvent, monomer and catalyst's concentration on the polymerization have been systematically in...

A copper-catalyzed intramolecular C–N bond formation reaction of 3-amino-2-(2-bromophenyl)dihydroquinazolinones has been developed for the synthesis of indazolo[3,2-b]quinazolinones in moderate to good yields. The structure of the newly synthesized indazolo[3,2-b]quinazolinones was unambiguousl...

A hydrogen ion-selective poly(vinyl chloride) (PVC) membrane electrode was developed using 2-(4-methoxy phenyl) 6-(4-nitrophenyl)-4-phenyl-1,3-diazabicyclo [3.1.0] hex-3-ene as ionophore. Effects of experimental parameters such as membrane composition, nature and amount of plasticizer, and the a...

Hartree-Fock (HF) and density functional theory (DFT) calculations have been carried out on the molecular structure of (E)-2-methoxy-4-[2-(4-nitrophenyl)ethenyl]-phenol (MNEP) which has interesting non-linear optical properties. This compound is also known as 4-methoxy-3-hydroxynitrostilbene in ...

In this Letter the baker’s yeast-mediated biotransformation of variously substituted α-hydroxy- and α-acetoxymethyl-5-phenylfuran-2-yl-ethanones is described. The stereochemical outcome of the reactions was strongly influenced by the nature of the substituents on the phenyl ring.

A novel series of 2-Chloroquinoline nucleus clubbed with the pyrazole ring has been synthesized and screened for antibacterial and antifungal activity. The results obtained were promising against both bacterial and fungal strains.   Among the series, compound MB-N was found moderately active aga...

The success of chemotherapeutics in easing the burden of malaria is under continuous threat from ever-evolving parasite resistance, including resistance to artemisinin combination therapies. Therefore, the discovery of new classes of antimalarials which inhibit new biological targets is imperati...

The generation of homogeneously glycosylated proteins is essential for defining glycoform-specific activity and improving protein-based therapeutics. We present a novel glycodendron prosthetic which can be site-selectively appended to recombinant proteins to create ‘N-glycosylated’ glycoprotei...

In this work, a simple and sensitive determination of fenitrothion is developed on the basis of Nanometal Surface Energy Transfer (NSET) of gold nanoparticle on the fluorescence of fluorescein. The developed gold nanoparticle quenched fluorescein system exhibits high sensitivity and selectivity ...

Fluoride contamination of drinking water, which causes fluorosis and neurological damage, is an exigent worldwide problem. Adsorption by metal oxyhydroxides is an attractive technology for water defluorination, although the removal efficiency is restricted by protonation of the oxygen binding si...

We have synthesized two new iron complexes that have been structural and magnetically characterized: diphenylguanidinium hexafluoroferrate and hexakisvaline-oxo-triiron(III) chloride. The former crystallizes as monomers with the fluoride ions six-coordinating the Fe(II) ion. Valine iron chloride...

Crystallization from hydrofluoric acid/nitric acid solutions supersaturated with Fe(III) and Cr(III) has been investigated. Iron and chromium crystallizes into a solid solution in the form of Cr(Fe)F3·3H2O, which is isostructural with CrF3·3H2O and α-FeF3·3H2O. By seeded isothermal desupersa...

Crystallization of nickel fluoride hydrate from mixed pickle acid and the influence of Ni(II) on growth rate of β-FeF3·3H2O have been studied. Iron and nickel crystallize into an unidentified Fe/Ni fluoride hydrate crystal having the overall mol ratio of Ni, Fe, and F equal to 1:2:8, which is ...

To clearly understand the coloration mechanism of iron zircon pigment based on encapsulating or doping, FeF3, as a mineralizer and a Fe source, is introduced into this pigment prepared by sol-gel method. The results show that Fe3+ cation is doped into zircon by means of replacing zirconium ion, ...

Medical Geology is a growing field in Uruguay and the groundwater quality has been the focus of multiple studies, being As levels one of its main concerns. The aim of this study was the application of analytical methodologies for the assessment of total arsenic and inorganic arsenic species, flu...

Crystal growth of β-FeF3·3H2O has been investigated in mixtures of 3 mol kg−1 hydrofluoric acid and 3 mol kg−1 nitric acid at 30, 40 and 50 °C. Seeded isothermal desupersaturation experiments have been performed in the range: 1.3

Iron(III) fluoride (FeF3) with low crystallinity and high surface area has been synthesized by a fluorolysis method, and applied as a positive electrode material for lithium secondary batteries. The FeF3 prepared with a high molar ratio of hydrogen fluoride exhibits a high surface area and cryst...

The influence of hydrofluoric acid and nitric acid concentration on the growth rate of β-FeF3·3H2O crystals has been studied in different hydrofluoric acid (4.7–10.7 mol/(kg H2O)) and nitric acid (2.1–4.6 mol/(kg H2O)) mixtures at 50 °C. Seeded desupersaturation experiments were performed a...

A new method, using hydrophilic interaction chromatography (HILIC), for quantification of succinylcholine and impurities in Active Pharmaceutical Ingredient (API), as well as in the medicinal product, was developed. Additionally, the new impurities in API were discovered using ultra-high perform...

A new class of multinucleate pyrimidine chalcogen (Se/Te) derivatives, i.e. 2,4-bis(arylchalcogenyl)pyrimidine and 2-chloro-4,6-bis(arylchalcogenyl)pyrimidine compounds, has been synthesized for the first time by the nucleophilic substitution of chlorine at the C-2 and C-4 positions of 2,4-dichl...