Polypyrrole is one of the most useful conductive polymers, but green synthesis of this polymer has been restricted until now. The objective of the present paper is green synthesis of nano polypyrrole (PPy) by oxidative polymerization using urea-hydrogen peroxide. It was found that conductivity and morphology of polypyrrole are highly dependent on the reaction conditions such as the molar ratio ...

Various phosphosilicate doped polypyrrole proton conductive thin films composite membranes were successfully prepared. Phosphosilicate obtained by sol-gel process mixing tetraethoxy silane with phosphoric acid at a molar ratio 1:5. The conductivity increased increasing both the content of gel and relative humidity. Temperature dependence showed Vogel-Tamman-Fulcher type behavior, indicating tha...

We present investigations into a variety of supporting electrolytes and supercritical fluids probing the phase and conductivity behaviour of these systems and show that they not only provide sufficient electrical conductivity for an electrodeposition bath, but match the requirements imposed by the different precursors and process parameters, e.g. increased temperature, for potential deposition ...

The synthesis, characterization and biological activity of Cu(II) and Ni(II) complexes derived from tridentate Schiff base ligand 3-hydroxy-4-(pyridine-2-yl methylene amino) benzoic acid (HL) was obtained by the condensation of 2-Pyridine carboxaldehyde with 4-amino 3-hydroxy benzoic acid has been described. The complexes were characterized based on elemental analyses, molar conductivity measur...

The thiosemicarbazone of 9-anthraldehyde, (9-ATSC) and its group 12 metal complexes have been synthesized. The four compounds have been characterized by IR, electronic and NMR spectrometries, molar conductivity, melting points and elemental analysis. In all the complexes, the 9-ATSC coordinates through the sulfur and the azomethinic nitrogen. The zinc (II) complex shows a 1:2 metal to ligand st...

The ligand 2-(acetylacetonato)-iminobenzohydroxamic acid and its different mixed ligand novel complexes with NiII having specific formulae have been synthesized and characterised by elemental analyses, magnetic and conductance measurements, IR and electronic spectral studies. The ligand was found to behave in dibasic tetradentate (OO’ NO donor) manner. All the synthesized NiII complexes were no...

N, Nbis(2-chloroethyl)aminobenzoyl picolinoyl hydrazide(BABPH), a benzoic acid nitrogen mustard based new compound and its metal complexes(Cu2+ and Zn2+) have been synthesized and characterized by elemental analysis, IR, 1HNMR, EPR, electronic spectrum, and molar conductivity measurements. In the present study, both BABPH and its complexes exhibited in vitro excellent inhibition of L1210, K562 ...

H : specific total enthalpy α : angle of attack h : specific static enthalpy β : sideslip (yaw) angle J r : mass diffusion flux vector γs : recombination coefficient L : characteristic length ∆s : wall-normal grid spacing M : Mach number or molar mass ε : emissivity n : unit normal κ : gas mixture thermal conductivity p : Pressure μ : gas mixture viscosity Q : heat load σ : Stefan-Boltzmann con...

2-(o-Hydroxyphenyl)-1,8-naphthyridine (HN), 2-(4-hydroxy-6-methylpyran-2-one-3-yl)-1,8-naphthyridine (HMPN) and 2-(benzimidazol-2-yl)-1,8-naphthyridine(BN) react with acetates of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) to yield metal ion complexes of definite composition. These compounds were characterized by elemental analyses, molar conductivity, magnetic susceptibility measurements, therma...

The mixed ligand complexes of the type [ML1L2]Cl2, where M=Mn(II), Fe(III),Co(II), Ni(II), Cu(II)L1=pyruvic acid semicarbazone (PYSC) L2= acetone semicarbazone (ACSC). These complexes have been synthesized by the reactions of metal chlorides with two different semicarbazone in 1:1:1 molar ratios. The resulting products have been characterized on the basis of elemental analysis, magnetic measure...