1. Department of Chemistry
2. Quaid-i-Azam University
3. Islamabad-45320
4. Pakistan
5. School of Chemistry & Manchester Institute of Biotechnology
6. Departament de Química
7. Universitat de les Illes Balears
8. 07122 Palma de Mallorca (Baleares)
9. Spain
10. Department of Physics
11. University of Sargodha
12. Sargodha
13. University of Otago
14. Dunedin
15. New Zealand