Volume-2 ~ Issue-5

Abstract: The ultrasonic velocity (u), density (ρ) and viscosity (η) have been measured in binary liquid mixtures containing IBMK+Aniline, IBMK+N,N-Dimethyl aniline,Acetophenone+Cyclohexane at 308 K. From these data some of acoustical parameters such as adiabaticcompressibility (βad), free length (Lf), free volume (Vf) and internal pressure ( πi) have been computed using thestandard relations. The excess values of these parameters are also evaluated over the whole concentration range.The result is interpreted in terms of molecular interaction such as dipole-dipole interaction through hydrogen bonding between components of mixtures. The dependence of excess properties of mixture compositions were compared and discuss in terms of the intermolecular free length and other factors affecting the salvation and self association effect. The excess values of these indicate dipole-induced dipole interaction complexity in the binaryliquid mixture.
Keywords : molecular interaction, Ultrasonic velocity, adiabatic compressibility, inter-mole molecular free length internal pressure & dipole - dipole interactions, dipole -induced dipole interactions

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Abstract :Commercially used dyes Malachite green and Crystal violet are toxic for human health . These dyes were removed through photo catalytic degradation using a new semiconductor Barium strontium titanate (Ba3TiO.SrO3TiO). The maximum degradation conditions were established by varying various factor like pH, intensity of light, concentration of dyes, amount of semiconductor etc. It was observed on kinetic parameters that the process follows pseudo first order rate law. The degraded products formed were NO2 , CO2, H2O etc which were nontoxic in nature. The mechanism was confirmed to be a free radical one by use of scavenger.
Keyword: Amount of semiconductor, Barium strontium titanate, concentration of dyes , intensity of light, pH, Pseudo first order, scavenger

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Abstract:The interaction of ligands and their transition metal complexes with plasmid (pUC19 DNA) and calf Thymus DNA were investigated by UV spectroscopic studies and gel electrophoresis measurements. The interaction between ligand/metal complexes and DNA was carried out by increasing the concentration of DNA from 0 to 10 μl in UV spectroscopic study, while the concentration of DNA in gel electrophoresis remained constant of 10 μl. These studies supported the fact that, the complex bunds to DNA by intercalation via ligand into the base pairs of DNA. The relative binding efficacy of the complexes to DNA was much higher than the binding of ligands, especially the complex of [Cu (L1) (L2) Cl2] had the highest binding ability to DNA. The mobility of the bands decreased as the concentration of the complex was increased, indicating that there was increase in the interaction between the metal ion and DNA. Complexes of L1 were excellent for DNA binding as compared to L2.

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Abstract:The double sulphates of copper, nickel and cobalt with monomethylammonium cation were synthesized as reported in literature. The synthesized double sulphates of copper, cobalt and nickel with mono methyl ammonium cation were characterized using FTIR. The characteristic bands for N-H, C-H, SO4 2- for these compounds reported in literature were observed by the synthesized double salts. High conductivities of double salts were indicative of their strong electrolytic nature. These data will be useful when these compounds have to be grafted onto mesoporous materials for catalytic studies.
Keywords -conductivity studies, double sulphates, monomethylammonium double sulphates

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