1. Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
2. Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan
3. Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
4. Department of Physics, University of Sargodha, Sargodha, Pakistan
5. Chemistry Division, Pakistan Institute of Nuclear Science and Technology, Nilore, Pakistan