1. Centre for Nanoscale Science and Centre for Materials Discovery, Department of Chemistry, University of Liverpool, U.K., LUMS School of Science & Engineering (SSE), D.H.A., Lahore, and National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan, Physical Chemistry, Centre for Chemistry and Chemical Engineering, Lund University, Sweden, and Institute of Biochemistry, Mokslininku 12, LT-08662 Vilnius, Lithuania