1. Department of Chemistry, Acharya Nagarjuna University, Guntur, AP, 522510, India
2. Department of Chemistry, S.G.S. Arts College, Tirupathi, AP, 517502, India
3. Department of Chemistry, J.K.C.C. Acharya Nagarjuna University, Guntur, AP, 522006, India
4. Department of Chemistry, Rajiv Gandhi University of Knowledge Technologies, Dr APJ Abdul Kalam, IIIT, Ongole, AP, 523001, India