1. H.E.J. Research Institute of ChemistryInternational Center for Chemical and Biological SciencesUniversity of Karachi Karachi- 75270 Pakistan
2. Department of ChemistryForman Christian College (A Chartered University) Ferozepur Road Lahore- 54600 Pakistan
3. Department of ChemistryScience and Arts CollegeRabigh CampusKing Abdulaziz University Jeddah- 21589 Saudi Arabia