1. Postgraduate and Research Department of Chemistry, Bishop Moore College, Mavelikara, Alappuzha, University of Kerala, Kerala 690110, India
2. Postgraduate and Research Department of Chemistry, CMS College, Kottayam, Kerala, India
3. Department of Chemistry, TKM College of Engineering, Karicode, Kollam, Kerala 691005, India
4. School of Energy Materials, Mahatma Gandhi University, Kottayam, Kerala 686560, India