1. Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur, PO- Botanic Garden, Howrah-711 103, (WB), India
2. Department of Chemistry, St. Xavier's College (Autonomous), Palayamkottai, Tamil Nadu-627 002, India
3. Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India