1. Department of Chemistry, Faculty of Science, Al-Balqa Applied University, Al-Salt, Jordan
2. The Petroleum Institute, Khalifa University of Science and Technology, Abu Dhabi 2533, UAE
3. Department of Chemistry, University of Jordan, Amman 11942, Jordan
4. College of Science, Department of Chemistry, University of Sharjah, P.O. Box 27272, Sharjah, UAE