Syntheses of vanadium complexes of higher oxidation states (+IV and +V) are mostly influenced by metal precursors, the nature of the ligands, reaction conditions, solvents involved etc. The resulting complexes are generally associated with oxido-, dioxido-, oxidoalkoxido, oxidohydroxido groups e...

The vanadium haloperoxidase (V-HPO) enzyme, extracted from the brown alga Laminaria saccharina, is able to catalyze the formation of a black precipitate, using as precursor the amino acid l-dopa in the presence of hydrogen peroxide and iodide, in one-pot synthesis. The l-dopa oxidation is a mult...

Vanadium-dependent haloperoxidases are a class of enzymes that catalyze oxidation reactions with halides to form halogenated organic products and water. These enzymes include chloroperoxidase and bromoperoxidase, which have very different protein sequences and sizes, but regardless the coordinat...

The crystal structure of 3-iodo-2,6-dimethyl-4-nitropyridine N-oxide (IDMNPNO) is shown to be not isomorphic with the previously studied 3-chloro- and 3-bromo-derivatives. The compound crystallizes in monoclinic structure, space group C2/c, with eight molecules per unit cell of dimensions a=28.0...

The X-ray crystal structure determination of 3-chloro-2,6-dimethyl-4-nitropyridine N-oxide (ClDMNPNO) and 3-bromo-2,6-dimethyl-4-nitropyridine N-oxide (BrDMNPNO) shows that the two pyridine derivatives are isomorphic with monoclinic space group P21/c, and four formula units in a cell with the fo...

A series of copolyesteramides (E66/A66) were prepared by a melt polycondensation from hexamethylene glycol (E6), hexamethylenediamine (A6), and adipic acid (6). Spacing measured by WAXS showed the discontinuous change at the copolymer composition of A66 = 20 mol. %. Melting temperature (Tm) of A...

The effects of ionic liquids (ILs), 1-butyl-3-methylimidazolium acetate ([Bmim][OAc]) and 1-butyl-3-methylimidazolium benzoate ([Bmim][PhCOO]) on the aggregation behavior of dodecyltriphenylphosphonium bromide (C12TPB) in aqueous solution were investigated by surface tension measurements, dynami...

1,3,5-Tris(dibenzoheterolyl)benzenes 2S, 2O, and 2N were synthesized through acid-catalyzed cyclization reactions of acetyl dibenzoheteroles 1S, 1O, and 1N, respectively. Their photophysical and electrochemical properties were investigated by means of UV–vis, fluorescence spectroscopies, and cy...

Publisher SummaryThis chapter describes the phenolic derivatives of monohydric aliphatic alcohols and related alkylamines together with their oxidation products, the corresponding monoaldehydes, monoketones and monocarboxylic acids. It discusses their general methods of preparation, properties a...

The mass spectra of Zr(ClO4)4, Hf(ClO4)4 and CU(ClO4)2 are reported. The major fragmentation path for Zr and Hf compounds involves the loss of ClO4· followed by the elimination of Cl2O7 (Cl2O6) and, eventually ClO3·(ClO2·). The copper perchlorate molecular ion dissociates to Cu+ by sequential...

The mass spectra of TI(NO3)4, Zr(NO3)4, Hf(NO3)4, Sn(NO3)4 and VO(NO3)3 are reported. The heaviest ions in all the spectra are those formed by the loss of one NO3 group from the molecular ions. Further fragmentation involves change of metal or nitrogen valences. Splitting off of nitrogen reducti...

ABSTRACTCo-supplementation of methyl donors may lower hepatic lipid content in transition cows. To define the ability of methyl donor supplementation (MDS) to reduce hepatic lipid content and modify the plasma lipidome, 30 multiparous Holstein cows (2.04 ± 0.69 lactations; 689 ± 58 kg of body ...

The synthetic versatility and the low toxicity of cyclic alkyl carbonates has driven a wider interest in their use to access new biobased and environmentally friendly polymer building blocks, especially as alkylating reagents. Here, we report for the first time, the synthesis of biobased polyols...

It has been previously shown that the linkage of the anticancer drug gemcitabine (Gem) to the squalene (SQ), a natural lipid precursor of the cholesterol biosynthesis, allowed the resulting bioconjugates to spontaneously self-assemble as nanoparticles (NPs) with improved pharmacological activity...

Molecularly imprinted polymers which have been extensively investigated as selective adsorbents were constructed using a template molecule during the polymerization to gain template-specific cavities. In this study, we prepared cholesterol imprinted poly(2-hydroxyethyl methacrylate-methacryloyam...

Poly(ethylene carbonate) (PEC) is a biodegradable polymer with attractive properties for controlled drug delivery applications. However, the mechanisms by which the polymer is degraded and the control hereof are not yet completely understood. Here, we investigated the degradation behavior of PEC...

SummaryCholesterol is an essential component of most biological membranes and serves important functions in controlling membrane integrity, organization, and signaling. However, probes to follow the dynamic distribution of cholesterol in live cells are scarce and so far show only limited applica...

DPPC/Cholesterol liposomes of average diameter below 100 nm were used as a matrix for calcium carbonate precipitation. Adsorption of calcium ions on the vesicles was determined via zeta potential measurement. It was found that with increasing calcium ions concentration the electrokinetic potenti...

In this study, the molecular imprinting technique and self-assembled monolayer technique were combined to increase the recognition ability of cholesterol. A self-assembled monolayer with 4-mercaptophenol and benzenethiol was formed on a gold plate, and the reaction of cholesteryl chloroformate w...

The electron paramagnetic resonance (EPR) of γ-irradiated single crystals of cholesteryl methyl carbonate (C29H48O3) has been studied for different orientations of the crystals in a magnetic field. EPR spectra of cholesteryl methyl carbonate (C29H48O3irradiated by 60Co-γ were recorded between ...