The bi-exponential luminescence decay of europium (III) complexed by Suwannee River fulvic acid (SRFA) and humic acid (SRHA), is studied in time-resolved luminescence spectroscopy using two different gratings at varying delay after the laser pulse, increasing accumulation time in order to obtain...

In this Letter, we report observation of fragments of the metal–organic complex, Eu(2,2,6,6-tetramethyl-3,5-heptanedionato)3 resulting from multiphoton ionization of the complex entrained in an Ar molecular beam. Photofragmentation was observed at 532, 355, 266 nm, and in the range of 460–466 ...

Conductimetric measurements have been performed on solutions of the following salts in N,N-dimethylthioformamide (DMTF) at 25°C:- triisoamyl-n-butylammonium tetraphenylborate, triisoamyl-n-butylammonium iodide, triisoamyl-n-butylammonium perchlorate, tetra-n-butylammonium tetraphenylborate, tet...

The gas chromatographic stationary phase properties of fifteen tetra-n-butyl-ammonium salts containing chloride, bromide,iodide, nitrate, nitrite, thiocyanate, perchlorate, hexafluorophosphate, tetrabutylborate, tetraphenylborate, picrate, tetrafluoroborate, 4-toluenesulfonate, methanesulfonate,...

The standard partial molar entropy of the aqueous tetrabutylammonium cation, not known previously, has now been obtained, based on the molar entropy of two of its crystalline salts, the iodide and the tetraphenylborate, recently determined experimentally for this purpose. The calculation require...

For developing bipolar membrane electrodialysis (EDBPM), heterogeneous–homogeneous composite bipolar membrane (BPM) was prepared by casting method to achieve cost effectiveness, high water splitting efficiency, permselectivity, low resistance, salt diffusion and good stability. For preparing BP...

Polysulfonamide (PSA) and poly(amide-sulfonamide) (PASA) thin film composite (TFC) membranes as the novel acid-stable membranes have been prepared by two aromatic and cycloaliphatic diamines. The acid-stable membranes were synthesized by interfacial polymerization of the diamines with benzene-1,...

Poly(2-methoxyaniline-5-phosphonic acid monoethyl ester) (PMAPE) was synthesized via oxidative polymerization of 2-methoxyaniline-5-phosphonic acid monoethyl ester. This is the first example of the conducting self-doped polymers with phosphonic acid monoester. Self-doping of the polymer was show...

A novel acidic nanocatalytic system, sulfamic acid-functionalized Fe3-xTixO4 magnetic nanoparticles (MNPs), were synthesized through one-pot reaction of Fe3-xTixO4 MNPs with 3-chloropropyltrimethoxysilane and imidazolidine-2,4-dione followed by functionalization with chlorosulfonic acid. The str...

Covalently linked sulfonic acid (SO3H) modified MCM-41 mesoporous catalysts was prepared, characterized and its catalytic activity under microwave irradiation was evaluated. The NH2-MCM-41 was first prepared by anchoring (3-aminopropyl)triethoxysilane (APTES) on Si-MCM-41 and further reacted wit...

In order to investigate the effect of the fixation of the orientations of the two long chains, three types of novel derivatives of scavenger receptor inhibitor 1 were synthesized, and their biological activities were evaluated. Among the novel derivatives, 2,4-bis(octadecanoylamino)benzenesulfon...

Photoacid generator (PAG) bound polymers have been developed to form chemically amplified resists (CARs) due to their improved lithographic performance. With poly(sodium p-styrenesulfonate-co-4-hydroxystyrene-co-alkyl methacrylate) prepared as a precursor, a new type of PAG bound polymers are sy...

Tetramethylthiuram monosulfide and tetramethylthiuram disulfide react with [(C5Ph5)Ni(NCCH3)2]BF4 (2) to give the black pentaphenylcyclopentadienyl nickel complex [(C5Ph5)Ni{S2CN(CH3)2}]BF4 (7). Its crystal structure has been determined. It is the first 17-electron cyclopentadienyl nickel(III) c...

Polycrystalline samples of Cu(Me2dtp)(Me2dtc) and Ni(Me2dtp)(Me2dtc) complexes are studied by means of EPR, ENDOR, and vibrational normal coordinate analysis. On the basis of EPR and ENDOR experimental results, the spin density distribution on 1H and 31P nuclei of the mixed ligand and parent cop...

The synthesis and electrochemical behaviour of [Ni(DL-CTH)L](ClO4) and [Ni(Cy)L′](ClO4), where DL-CTH is the racemic isomer of 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, Cy is 1,4,8,11-tetraazacyclotetradecane (Cyclam), L is dimethyldithiocarbamate (Me2Dtc), diethyldithiocarba...

Ligation of nickel(II) by Trofimenko’s hydrotris(3,5-dimethyl-1-pyrazolyl)borate anion (TpMe,Me) and zwitterionic organoxanthate or dithiocarbamate co-ligands affords neutral high-spin pentacoordinate complexes with formally trianionic N3S2 ligand fields, similar to that of the nickel-dependent...

Dithiocarbamates, thiuram sulphides, xanthates, pyridinethiones and halogenated 8-hydroxyquinolines are groups of compounds which can form lipophilic complexes with Ni2+. These compounds are widely used as drugs and pesticides, and in industry. We have exposed rodents (mice, rats) and fish (brow...

The compounds (Ph4P)2[Zn(RSO2N = CS2)2] [Ph4P+ = tetraphenylphosphanium cation; R = CH3 (1b), CH3CH2 (2b), CH3(CH2)3 (3b) and CH3(CH2)7 (4b)] were synthesized by the reaction of RSO2N = CS2K2·2H2O (1a–4a) with Zn(CH3COO)2·2H2O and Ph4PCl. The IR data were consistent with the formation of bis(...

The synthesis and electrochemical behaviour of the nickel(II) macrocyclic derivatives [Ni(MC1)L](ClO4) and [Ni(MC2)L](ClO4) where MC1 is 2,4,4-trimethyl-1,5,9-triazacyclododec-1-ene and MC2 is 2,4,4,9-tetramethyl-1,5,9-triazacyclododec-1-ene, and L− stands for the 1,1-dithio monoanions, dimethyl...

The performances of a coordination polymerization precipitant, N,N′-bis-(dithiocarboxy)piperazine (BDP) were compared with the widely used heavy metal precipitant, diethyldithiocarbamate (DDTC), through the treatment of three kinds of nickel-containing wastewaters, NiSO4, nickel citrate (NiCA) ...