1. Department of Chemistry, Abbottabad University of Science & Technology (AUST), Abbottabad 22500, Pakistan
2. College of Biology Hunan University, Changsha, Hunan 410082, P. R. China
3. Department of Chemistry, COMSATS University Islamabad Campus, Islamabad 45550, Pakistan
4. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
5. Graduate School of Energy Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea