Journal of Petroleum & Environmental Biotechnology

Multifunctional nickel(II) and copper(II) N,Nâ??-ethylenebis(acetylacetoniminato) complexes

3^rd World Congress on Petrochemistry and Chemical Engineering

November 30-December 02, 2015 Atlanta, USA

Manawadevi Y Udugala-Ganehenege

University of Peradeniya, Sri Lanka

Posters-Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

The paper describes an overview of multi functional properties of Nickel(II) and copper(II) N,Nâ??-ethylenebis(acetylacetonim inato) Schiff base complexes. These complexes are found to be capable of acting as acid-base indicators, antimicrobial agents and electrocatalysts for reduction of carbon dioxide and carboxylic acids. In strong acid-weak base titrations, these complexes are better indicators than methyl orange, as they give very sharp and clearly visible colour changes at the end point. This is the first report of using metal complexes as acid-base indicators due to their distinctly reversible colour changes in the presence of strong acids and bases. Our direct bioautography and disk diffusion studies revealed the anti-microbial activity of these complexes against Staphylococcus aureus, Escherichia coli bacteria and Cladosporium and Fusarium Fungi species. Growth rate study of Fusarium reveals that copper (II) complex is more effective than nickel (II) complex for the growth rate reduction. Antibacterial activity of the complex seems to be specific. copper (II) complex shows a good antibacterial activity against Staphylococcus aureus spp. whereas nickel (II) complex shows a significant activity against Escherichia coli spp. The electrocatalytic activity of Nickel(II) complex is significantly higher than that of copper ( II) complex for CO2 reduction. Both complexes are electrocatalysts for carboxylic acid reduction.

Biography :

Email: myug@pdn.ac.lk