1. Post-Graduate and Research Department of Chemistry; Sri Ramakrishna Mission Vidyalaya College of Arts and Science; Coimbatore 641020 Tamil Nadu India
2. Department of Chemistry; Kongunadu Arts and Science College; Coimbatore 641029 Tamil Nadu India
3. Department of Chemistry; North Eastern Hill University; Shillong Meghalaya 793022 India
4. Department of Chemistry; Karunya University; Karunya Nagar Coimbatore 641114 Tamil Nadu India