1. Chemistry Department, College of Science and Arts-Qurayat, Jouf University, Saudi Arabia;
2. Photochemistry Department, National Research Centre, Giza, Egypt;
3. Applied Organic Chemistry Department, National Research Centre, Giza, Egypt;
4. Department of Chemistry, College of Science, Qassim University, Buraidah, Saudi Arabia;
5. Department of Tanning Materials and Leather Technology, National Research Centre, Giza, Egypt