1. Department of Chemistry, Zakir Husain Delhi College, University of Delhi, J.L.N. Marg, New Delhi-110002, India
2. Department of Chemistry, Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India
3. Department of Chemistry, Ramjas College, University of Delhi, New Delhi-110007, India
4. Department of Chemistry, Rajdhani College, University of Delhi, Raja Garden, Ring Road, New Delhi-110015, India
5. Department of Zoology, Swami Shraddhanand College, University of Delhi, Alipur Road, Delhi-110036, India