1. Department of Chemistry, University of Malakand, P.O. Box 18800,
Dir Lower, Malakand18800Khyber Pakhtunkhwa, Pakistan
2. Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, PC, Birkat Al Mauz, 616Nizwa, Sultanate of Oman
3. College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang050024, China