1. Research and Post Graduate Department of Chemistry; St. Berchmans College; Changanacherry Kerala 686 101 India
2. Department of Chemistry; Kalasalingam University; Krishnankoil, Virudhunagar District Tamil Nadu 626 126 India
3. Department of Chemistry; Indian Institute of Space Science and Technology, Valiamala P.O; Trivandrum Kerala 695 547 India
4. Department of Chemistry; Amrita School of Arts & Sciences, Amritapuri, Amrita Vishwa Vidyapeetham, Amrita University; Kerala India