1. Department of Chemistry, Faculty of Science, King Faisal University, Al-Hassa, Saudi Arabia
2. Department of Chemistry, Faculty of Science, Helwan University, Helwan, Egypt
3. Wake Forest Institute for Regenerative Medicine, Winston Salem, North Carolina 27103, USA
4. Chemistry Department, College of Science, Sohag University, Sohag, Egypt
5. Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt