1H NMR evidence for direct coordination between the Ln(III) ion and the oxygen atoms of the pentaethylene glycol (EO5) ligand and the picrate anion (Pic) in [Ln(Pic)2(EO5)][Pic] {Ln = Ce and Nd} complexes are confirmed by single X-ray diffraction. No dissociation of Ln–O bonds in dimethyl sulfo...

Tracer diffusion coefficients, Dt, for mixed micelles and mutual diffusion coefficients, Dm, for mixed surfactants were measured in water at 298.15 K for systems of a nonionic surfactant, octaethylene glycol monododecyl ether (C12E8) or hexaethylene glycol monododecyl ether (C12E6), and a long-c...

Poloxamer 407 (P407) and poly (ethylene glycol) diacrylate (PEG-DA) are well-characterized building blocks for physical and chemical hydrogels, respectively. P407 physical hydrogels alone can be used as injectable hydrogels, but lack mechanical stability. In this contribution, PEG-DA was added t...

Two novel enantiopure BODIPY linked azacrown ether chemosensors were prepared by reacting 3-chloro-5-methoxyBODIPY with new enantiopure monoaza-18-crown-6 ether ligands bearing two methyl and isobutyl groups on their chiral centres, respectively. The latter compounds were synthesized starting fr...

The extraction and carrier facilitated transport of Na+, K+, Mg2+ and Ca2+ picrates dinitrophenolates, orthonitrophenolates and thiocyanates were studied using triethylene glycol monomethyl ether as a carrier through chloroform, 1,2 dichloroethane and carbontetrachloride bulk liquid membranes. K...

Oligoethylene glycol substituted imidazolium salts were synthesized as promoters for a range of SN2 reactions, and their efficiency was examined. These tailor-made organic promoters enhanced the nucleophilicity of alkali metal salts significantly through the combined effects of two promoters (ol...

Thermodynamic parameters (log Ks, ΔHc, TΔSc) of alkali-metal and alkaline-earth-metal ion complexes of polyethylene glycol dimethyl ethers (glymes) have been determined in methanol and acetonitrile as solvents at 25 °C by using a modified calorimetric technique. It has been shown that, for a ...

The characterization and identification of compounds in complex real-world samples is quite difficult and new concepts and workflows are highly desirable. Retention indices (RIs) are widely used in gas chromatography (GC) to support the identification of unknown compounds. Several attempts have ...

New experimental density data of six glycols, namely ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TriEG), tetraethylene glycol (TeEG), pentaethylene glycol (PeEG) and hexaethylene glycol (HeEG), and a polyethyleneglycol (PEG 400) were determined in a wide range of temperatu...

Poly(ethylene glycol) methyl ether methacrylate macromonomers (ME-PEG350-MA) and their copolymers with methacrylic acid (MAA) were characterized by gas chromatography/mass spectrometry and by analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) at 550 °C, respectively. The separ...

The feasibility of the reaction between a metal and a long-chain fatty acid (stearic acid or behenic acid) was studied systematically and comprehensively for the first time. It was found that metals of Mn, Fe, In, Zn, Ga, Sn, Co, Cd, Ni, Pb, Cr, Mo, Nb and Sb could react with molten stearic acid...

Multilayer Langmuir–Blodgett (LB) films with X-ray contrast in between the neighbouring bilayers is proposed as an object for the investigation of the interlayer diffusion. Yttrium and lead stearates are chosen to form such kind of films. A double-section LB trough was used for deposition. X-ra...

A study of ageing effects on the magnetic properties of Single-Molecule-Magnets (SMMs) of the Mn12 based Acetate, ([Mn12O12(CH3COO)16(H2O)4]·2CH3COOH·4H2O (1) and Stearate, [Mn12O12(CH3(CH2)16COO)11(CH3COO)5(H2O)4] (2) complexes has been carried out. Detailed magnetization (M) measurements as ...

Molecular dynamics (MD) simulations were performed to investigate the geometric effect of nanostructured substrates on adsorptive behavior of potassium stearate monolayers. A typical protective coating, diamond-like carbon (DLC), was employed as adsorptive substrates. For the substrates with squ...

Magnesium stearate (MgSt) is the most commonly used excipient for oral solid dosage forms, yet there is significant commercial physicochemical variability that can lead to variable performance of critical product attributes. Differential scanning calorimetry (DSC) is often used as a quality cont...

Saponification occurring in paint layers of artworks represents a serious degradation process affecting the appearance and stability of paintings. Formation of metal soaps is mostly reported as a consequence of the interaction of lead white or zinc white with oil binder. We found the distinct sy...

The reaction between octadecyl 3-(3,5-di-tert-4-hydroxyphenyl)propanoate and dibasic lead stearate, two compounds added in most PVC formulations, has been investigated in bulk. The structure of the resulting product, obtained after a one-pot synthesis, was characterized by HRMS and 2D NMR analys...

The effect of lead stearate on the stability of PVC during its heat treatment was examined. In the presence of lead stearate, the rate of elimination of HCl is halved as compared to non-stabilized PVC. During the degradation, lead stearate is reacted completely mainly in the neutralization of th...

Clathrate hydrate is a promising option for gas storage and transportation. Sucrose stearate, an environmentally friendly chemical, was studied in CH4 hydrate formation process to evaluate its effect on gas storage of CH4 hydrate. The experiment was conducted systematically with four different s...

We have designed and successfully synthesized an alkylated aluminum quinoline derivative, tris(4-tridecyl-8-quinolinolato)aluminum (TDALQ), which could be used as an emitting material for solution-processible OLEDs. The synthesized material was identified by 1H NMR, IR and FAB-mass spectroscopy....