1. Manipal Centre for Natural Sciences (Centre of Excellence), Manipal Academy of Higher Education, Manipal 576104, India
2. Kabi Sukanta High School, Siliguri 734010, India
3. Department of Chemistry, University of North Bengal, Raja Rammohunpur, Siliguri 734013, India
4. Department of Chemistry, Galveston College, 4015 Avenue Q, Galveston, Texas 77550, United States