1. National
Centre of Excellence in Physical Chemistry, University of Peshawar, 25120 Peshawar, Pakistan
2. Environment
and Sustainability Institute (ESI), University of Exeter, Penryn Campus, Penryn,
Cornwall TR10 9FE, U.K.
3. Institute
of Chemical Sciences, University of Peshawar, 25120 Peshawar, Pakistan
4. Department
of Chemistry, COMSATS Institute of Information Technology, University
Road, Tobe Camp, 22060 Abbottabad, Pakistan