1. Department of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Dhaula Kuan, New Delhi-110021, India
2. Department of Chemistry, Netaji Subhas University of Technology, Sector-3, Dwarka, New Delhi-110078, India
3. Department of Chemistry, Bhaskaracharya College of Applied Science, University of Delhi, Sector-2, Dwarka, New Delhi-110075, India
4. School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, C.G.-492010, India