1. Department of Chemistry, University of North Bengal, Darjeeling734013, India
2. Department of Physics, Jadavpur University, Kolkata700032, India
3. Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab140306, India
4. M. M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana133207, India