1. Department of Physics , University of Punjab , Lahore , Pakistan
2. School of Chemistry , University of Punjab , Lahore , Pakistan
3. Department of Chemistry , The Islamia University of Bahawalpur , Bahawalpur , Pakistan
4. Department of Chemistry , University of Engineering and Technology , Lahore , Pakistan
5. Department of Physics , Government College University , Faisalabad , Pakistan
6. Department of Physics , College of Sciences, Princess Nourah Bint Abdulrahman University (PNU) , Riyadh , 11671 , Saudi Arabia
7. Department of Chemistry , The University of Lahore , Lahore , Pakistan
8. Institute of Biochemistry and Biotechnology, University of the Punjab , Lahore , Pakistan