1. Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India
2. Kutir Post Graduate College, Chakkey, Jaunpur-222146, Uttar Pradesh, India
3. Naval Materials Research Laboratory, Ambernath-421506, Maharashtra, India
4. Department of Chemistry, MMV, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India