A combined method with dispersive liquid–liquid microextraction (DLLME) and electrothermal atomic absorption spectrometry (ETAAS) has been developed for determining gold(III). Dicyclohexylamine, a new extractant for gold(III), showed excellent performance in DLLME. Acetone was indispensable to ...

Because of the extremely heterogeneous distribution of explosives in contaminated soils, on-site colorimetric methods are efficient tools to assess the nature and extent of contamination. To meet the need for rapid and low-cost chemical sensing of explosive traces or residues in soil and post-bl...

The experimental density ρ and refractive index nD data have been determined for the systems of dicyclohexilamine with 1-propanol, or 1-butanol, or 2-butanol, or 1-pentanol, in the temperature range (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15) K, and at (303.15, 308.15, 3...

Fumagillin is extensively used to control nosema disease in apiculture. In the commercial formulation, fumagillin is present as a salt in an equimolar quantity with dicyclohexylamine (DCH). In this study DCH was observed to be significantly more resistant to degradation in honey than fumagillin ...

Reaction of Cd(NCS)2 and Zn(NCS)2 with the co-ligands 4-benzylpyridine or 4-benzoylpyridine leads to the formation of eight new compounds, of which one crystallizes in two polymorphic modifications. The co-ligand rich compounds with the composition M(NCS)2(L)4 (M = Cd, Zn and L = 4-benzylpyridin...

Reactions of the gold(III) dichloride complexes [(N_C)AuCl2] ((N_C)=cycloaurated 2-phenylpyridine, 2-(p-tolyl)pyridine, 2-anilinopyridine or 2-benzylpyridine) with thiosalicylic acid (2-mercaptobenzoic acid, HSC6H4CO2H) and base gives a series of gold(III) thiosalicylate complexes [(N_C)Au(SC6H4...

In this work, the vibrational characteristics of 2-Benzylpyridine have been investigated. The structure of the molecule has been optimized and the structural characteristics of the molecule have been determined by density functional theory B3LYP method with 6-31G(d,p) basis set. The infrared and...

The novel heteroleptic cyclometalated complex [AuIII(pyb-H)(mnt)] (1; pyb-H = C-deprotonated 2-benzylpyridine; mnt  = 1,2-dicyanoethene-1,2-dithiolate) was tested against a panel of ten Gram positive (belonging to the Staphylococcus, Streptococcus spp. and Bacillus clausii), Gram negative (E. co...

[Cu(μ-MeCO2)2(4-Bzpy)]2 (4-Bzpy = 4-benzylpyridine) has been synthesized by reaction of [Cu(μ-MeCO2)2(H2O)]2 with 4-Bzpy in methanol at room temperature. The compound was characterized by Elemental Analysis, ATR-FTIR and X-ray Powder Diffraction. The molecular structure was determined by singl...

Although Ru3(CO)12 becomes a popular precursor for supported Ru catalysts nowadays, the activities of the catalysts prepared by thermolysis of the supported Ru3(CO)12 under different atmospheres have been rarely compared. We herein report the preparation of alumina-supported Ru samples by therma...

Multi-cyclic hydrocarbons from biomass are sustainable alternative for jet fuel. Here we report an unexpected hydrogenated intramolecular cyclization of diphenylmethane derivatives synthesized by alkylation of bio-derived compounds. With the presence of commonly used zeolite-Pd/C dual catalyst, ...

The aim of this study was to utilize ionic liquids (ILs) in preparation of modified sulfonated polyimide (SPI) composite membranes to substantially increase the conductivity of proton exchange membranes (PEMs). Protic ILs used included 1-vinylimidazolium trifluoromethanesulfonate [ImVH][OTf] and...

A novel sulfonated diamine bearing aromatic sulfophenyl pendant groups, named as, 2,2′-bis(4-sulfophenyl)-4,4′-oxydianiline (SPhODA) was synthesized. Sulfonated (co)polyimides (SPIs) with flexible ether linkage in the main chain and sulfophenyl groups in the side chain were synthesized from SP...

Man-made high-performance fibers produced a revolution in structural materials in the twentieth century. Fiber properties are known to increase with the decrease of their diameters. Ultrafine sub-micron and nanometer-sized fibers attract rapidly growing interest due to their unique advantages fo...

A series of copolyimides were prepared via the polyamide acids (polyamic acids) from the reaction of 2,3,3′,4′-biphenyltetracarboxylic dianhydride (a-BPDA) and pyromellitic dianhydride (PMDA) with 4,4′-oxydianiline (4,4′-ODA) at dianhydride molar ratios of 9:1, 7:3, 1:1, 3:7 and 1:9. Homopol...

Features of the two thin-film techniques, atomic layer deposition (ALD) and molecular layer deposition (MLD), are combined to build up a stable novel inorganic–organic hybrid material of the (–Ti–N–C6H4–O–C6H4–N–)n type, deposited from successive pulses of TiCl4 and 4,4′-oxydianiline pr...

Self-assembled monolayers (SAMs) of di-n-octadecyldisulphide (C18) and n-octanethiol (C8) were prepared on gold electrodes. From the studies carried out by cyclic voltammetry and square wave voltammetry, it was observed that the electrochemical behaviour of 4,4′-oxydianiline on these electrodes...

A gravimetric method was used to measure the solubility data of 4,4′-oxydianiline (ODA) in pure DMSO, DMAC, DMF, EGME, methanol and ethanol at temperatures ranging from 283.15 K to 323.15 K. The measured solubility data were well correlated by the modified Apelblat equation, λh equation, van’...

The metabolic disposition of [14C]-labelled 4-chlorodiphenyl ether (4-CDE) was examined in the winter skate (Raja ocellata). Following intravenous administration of a single dose of 4-CDE (68 nmol/kg wet body wt.) to the skate, 4-CDE concentrations in the blood declined exponentially with time. ...

Polybrominated diphenyl ethers (PBDEs) have been used extensively as brominated flame retardants (BFRs) in textiles, upholstery and electronics. They are ubiquitous contaminants in wildlife and humans. A low concentration of nonabrominated diphenyl ethers (nonaBDEs) is present in commercial Deca...