1. Department of Chemistry, National Institute of Technology, Meghalaya, Shillong 793003, India
2. Department of Chemistry, National Institute of Technology, Rourkela 793003, India
3. Department of Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India
4. Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India