1. Department of Chemistry, Shaheed Benazir Bhutto University, Sheringal, Upper Dir, 18000 Khyber Pakhtunkhwa, Pakistan
2. Department of Chemistry, University of Malakand, Lower Dir, 18800 Khyber Pakhtunkhwa, Pakistan
3. Department of Chemistry, Abdul Wali Khan University, Khyber Pakhtunkhwa, Pakistan
4. Institute of Chemical Sciences, University of Peshawar, Peshawar, 25000 Khyber Pakhtunkhwa, Pakistan